Relevant bibliographies by topics / Electron acceptor

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Electron acceptor'

Author: Grafiati
Published: 4 June 2021
Last updated: 20 February 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Electron acceptor.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Electron acceptor"

1

Neal, Sonya E., Deepa V. Dabir, Juwina Wijaya, Cennyana Boon, and Carla M. Koehler. "Osm1 facilitates the transfer of electrons from Erv1 to fumarate in the redox-regulated import pathway in the mitochondrial intermembrane space." Molecular Biology of the Cell 28, no. 21 (October 15, 2017): 2773–85. http://dx.doi.org/10.1091/mbc.e16-10-0712.

Full text
Abstract:
Prokaryotes have aerobic and anaerobic electron acceptors for oxidative folding of periplasmic proteins. The mitochondrial intermembrane space has an analogous pathway with the oxidoreductase Mia40 and sulfhydryl oxidase Erv1, termed the mitochondrial intermembrane space assembly (MIA) pathway. The aerobic electron acceptors include oxygen and cytochrome c, but an acceptor that can function under anaerobic conditions has not been identified. Here we show that the fumarate reductase Osm1, which facilitates electron transfer from fumarate to succinate, fills this gap as a new electron acceptor. In addition to microsomes, Osm1 localizes to the mitochondrial intermembrane space and assembles with Erv1 in a complex. In reconstitution studies with reduced Tim13, Mia40, and Erv1, the addition of Osm1 and fumarate completes the disulfide exchange pathway that results in Tim13 oxidation. From in vitro import assays, mitochondria lacking Osm1 display decreased import of MIA substrates, Cmc1 and Tim10. Comparative reconstitution assays support that the Osm1/fumarate couple accepts electrons with similar efficiency to cytochrome c and that the cell has strategies to coordinate expression of the terminal electron acceptors. Thus Osm1/fumarate is a new electron acceptor couple in the mitochondrial intermembrane space that seems to function in both aerobic and anaerobic conditions.
APA, Harvard, Vancouver, ISO, and other styles
2

Akiyama, Midori, Masafumi Sugiyama, Kenji Komaguchi, Kyoko Nozaki, and Takashi Okazoe. "(Invited) Synthesis and Properties of Fluorinated Cubanes." ECS Meeting Abstracts MA2022-01, no. 13 (July 7, 2022): 889. http://dx.doi.org/10.1149/ma2022-0113889mtgabs.

Full text
Abstract:
Electron acceptor molecules play an important role in the design of organic functional materials. The electron acceptor molecules reported so far are limited to π-conjugated molecules, which stabilize the accepted electrons by delocalizing them in the extended π-orbitals. In contrast, in perfluorocubane, in which eight carbons of the box-shaped molecule are fluorinated, the eight σ* orbitals of the C-F bonds overlap inside the box and are expected to accept and stabilize electrons there.[1] Since perfluorocubane is expected to accept electrons by overlapping σ* orbitals, it will probably show different physical properties from those of π-conjugated electron acceptor molecules. In the present study, we have succeeded in introducing multiple fluorine atoms into the carbon of cubane derivatives by using an original synthetic technique using fluorine gas,[2] which cannot be used in conventional synthetic organic chemistry. Using this key reaction, perfluorocubane (1), heptafluorocubane (2), and hexafluorocubane (3) were synthesized. Electrochemical and spectroscopic measurements demonstrated that the electron affinity increased with increasing the number of fluorine atoms. Furthermore, the successful observation of perfluorocubane radical anion by ESR measurement will be reported. [1] Irikura, K. K. J. Phys. Chem. A 2008, 112, 983–988. [2] Okazoe, T. J. Fluorine Chem. 2015, 174, 120–131. Figure 1
APA, Harvard, Vancouver, ISO, and other styles
3

Sekita, Michael, Ángel J. Jiménez, M. Luisa Marcos, Esmeralda Caballero, M. Salomé Rodríguez-Morgade, Dirk M. Guldi, and Tomás Torres. "Tuning the Electron Acceptor in Phthalocyanine-Based Electron Donor-Acceptor Conjugates." Chemistry - A European Journal 21, no. 52 (November 23, 2015): 19028–40. http://dx.doi.org/10.1002/chem.201503237.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Ondrechen, Mary Jo. "Electron donor-acceptor couples." International Reviews in Physical Chemistry 14, no. 1 (March 1995): 1–14. http://dx.doi.org/10.1080/01442359509353302.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Brouwer, Albert M., Nina A. C. Bakker, Piet G. Wiering, and Jan W. Verhoeven. "Highly solvatochromic emission of electron donor–acceptor compounds containing propanedioato boron electron acceptors." J. Chem. Soc., Chem. Commun., no. 16 (1991): 1094–96. http://dx.doi.org/10.1039/c39910001094.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Abdul-Hussein, W. A., and J. S. Abd. "Electron transport in double bridges system." JOURNAL OF ADVANCES IN PHYSICS 9, no. 2 (July 4, 2015): 2410–18. http://dx.doi.org/10.24297/jap.v9i2.1404.

Full text
Abstract:
In this paper we investigate theoretically the effect of introducing wide band, and Narrow band approximations for the bridge energy band on the electron transport process (ET) through the donor-bridges-acceptor (DBA) system. We using one electron model, for which the Hamiltonian of the system consists of a single-level for both Donor and Accepter (i.e. QD) both coupled to a band bridge as a tight binding interaction. The time dependent Schrödinger equation give us a formula for the occupation probabilities for donor and acceptor levels. The probability of (ET) to the accepter is smaller than for the longer bridge spacer between donor and acceptor. Also, we calculated the current and the effect of different system parameters are studied.
APA, Harvard, Vancouver, ISO, and other styles
7

Jellison, Jessica L., Che-Hsiung Lee, Xinju Zhu, Jordan D. Wood, and Kyle N. Plunkett. "Electron Acceptors Based on an All-Carbon Donor-Acceptor Copolymer." Angewandte Chemie International Edition 51, no. 49 (October 29, 2012): 12321–24. http://dx.doi.org/10.1002/anie.201206145.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Jellison, Jessica L., Che-Hsiung Lee, Xinju Zhu, Jordan D. Wood, and Kyle N. Plunkett. "Electron Acceptors Based on an All-Carbon Donor-Acceptor Copolymer." Angewandte Chemie 124, no. 49 (November 28, 2012): 12487–90. http://dx.doi.org/10.1002/ange.201206145.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Razus, Alexandru C. "Azulene Moiety as Electron Reservoir in Positively Charged Systems; A Short Survey." Symmetry 13, no. 4 (March 24, 2021): 526. http://dx.doi.org/10.3390/sym13040526.

Full text
Abstract:
The non-alternant aromatic azulene, an isomer of alternant naphthalene, differs from the latter in peculiar properties. The large polarization of the π-electron system over the seven and five rings gives to azulene electrophile property a pronounced tendency to donate electrons to an acceptor, substituted at azulene 1 position. This paper presents cases in which azulene transfers electrons to a suitable acceptor as methylium ions, positive charged heteroaromatics and examples of neutral molecules that can accept electrons. The proposed product synthesis was outlined and the expected electron transfer was highlighted by analyzing the NMR, UV-Vis spectra and the pKR+ values.
APA, Harvard, Vancouver, ISO, and other styles
10

Mackiewicz, M., and J. Wiegel. "Comparison of Energy and Growth Yields forDesulfitobacterium dehalogenans during Utilization of Chlorophenol and Various Traditional Electron Acceptors." Applied and Environmental Microbiology 64, no. 1 (January 1, 1998): 352–55. http://dx.doi.org/10.1128/aem.64.1.352-355.1998.

Full text
Abstract:
ABSTRACT Desulfitobacterium dehalogenans grew with formate as the electron donor and 3-chloro-4-hydroxyphenylacetate (3-Cl-4-OHPA) as the electron acceptor, yielding Y X/formate,Y X/2e− , andY X/ATP ranging from 3.2 to 11.3 g of biomass (dry weight)/mol, thus indicating that energy was conserved through reductive dechlorination. Pyruvate was utilized as the electron donor and acceptor, yielding stoichiometric amounts of acetate and lactate, respectively, and a Y X/reduced acceptor of 13.0 g of biomass (dry weight)/mol. The supplementation of pyruvate-containing medium with additional electron acceptors, such as 3-Cl-4-OHPA, nitrate, fumarate, or sulfite, caused pyruvate to be replaced as the electron acceptor and nearly doubled theY X/ATP (Y X/acetate formed). A comparison of the yields for 3-Cl-4-OHPA with those for other traditional electron acceptors indicates that the dehalogenation reaction led to the formation of similar amounts of energy equivalents. The various electron acceptors were used concomitantly with 3-Cl-4-OHPA in nonacclimated cultures, but the utilization rates and amounts utilized differed.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Electron acceptor"

1

LEE, CHERYLYN. "PHOTO-INDUCED RADICAL COPOLYMERIZATIONS OF ELECTRON-RICH OLEFINS WITH ELECTRON-POOR OLEFINS." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184135.

Full text
Abstract:
This study is a systematic investigation of the parameters and conditions necessary for photo-induced radical copolymerizations of donor olefins with acceptor olefins in the absence of an initiator. Very few cases have been previously reported and no mechanistic details of the initiation have been proposed in the literature. Our results show that the photoinitiation depends on the relative donor and acceptor strengths of the monomers, as well as the solvent. The highest occupied molecular orbital (HOMO) of the donor and the lowest unoccupied molecular orbital (LUMO) of the acceptor must be at the appropriate energy levels in order to produce a radical initiating species upon photoexcitation of the electron donor-acceptor (EDA) complex. If the donor-acceptor interaction is too weak, no copolymerization occurs. The excited complex (contact ion pair) presumably decays back to the ground state faster than producing an initiating species. If the donor-acceptor interaction is too strong, the excited complex dissociates to the free ions which could initiate ionic homopolymerization rather than radical copolymerization. The solvent may also determine the course of the reaction. In two cases, copolymerizations, which could be photo-induced in 1,2-dichloroethane, could not be photo-induced in acetonitrile. Dissociation of the excited complex (contact ion pair) is favored in polar solvents, such as acetonitrile, which are able to stabilize the ion radicals. This initiation method produces high molecular weight copolymers that may be cast into transparent films.
APA, Harvard, Vancouver, ISO, and other styles
2

Cameron, Joseph. "Small molecules based on novel electron-deficient acceptor units for organic electronic applications." Thesis, University of Strathclyde, 2016. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=26932.

Full text
Abstract:
Demand for photovoltaic cells is ever-increasing due to the diminishing supply of oil-based fuels and the associated harmful environmental effects. Organic photovoltaic devices offer a light and flexible alternative to Si-based PVs. In addition to this, they can be processed using fabrication methods such as spin-coating and inkjet printing hence, such devices have potential to be produced cheaply on a large scale. Although they have been applied as donor materials with success, polymers often show end-group variation and are polydisperse so there can be batch-to-batch variation with respect to OPV performance. A solution to these problems is the use of small donor molecules which are monodisperse and have well-defined structures. However, the shorter conjugation of small molecules with respect to polymers requires measures to shorten the HOMO-LUMO gap. A common approach is the incorporation of electron-deficient acceptor units into the donor molecule, lowering the LUMO level and therefore the HOMO-LUMO gap. Chapter 1 reviews band theory, the development of organic semiconductors, including a summary of oligothiophene based materials and common electron-deficient acceptor units used, the principles behind OPV and OFET devices and how organic semiconductors can be optimised in order to produce the best working devices. The synthesis, physical properties and OPV performance of materials based on naphthyridine-2,6-dione acceptor unit are presented in chapter 2, focussing on the difference between compounds with Donor-Acceptor-Donor and Acceptor-Donor-Acceptor structures. Chapter 3 shows the novel naphthyridin-2-one moiety and the synthesis of materials containing the unit and how they have been used for different applications including ambipolar OFETs and both donor and acceptor materials for bulk heterojunction OPV devices. A study in improving the mobility of OFET devices is presented in chapter 4. Different inorganic nanoparticles were added to organic semiconductor solutions for and the effect of this simple process on the performance of the OFET devices is discussed. Chapter 5 introduces the thieno[3,2-b]thiophene-2,5-dione and novel furo[3,2-b]furan-2,5-dione acceptor units. The synthesis, optical and electrochemical properties, and OFET and OPV device optimisation of materials based on these moieties are presented and discussed. A summary of the work discussed is presented in chapter 6 whilst chapter 7 presents the experimental methods for electrochemistry, device work, and synthetic procedures for each compound presented in Chapters 2, 3, 4 and 5.
APA, Harvard, Vancouver, ISO, and other styles
3

Xu, Yunhua. "Synthesis and Photoinduced Electron Transfer of Donor-Sensitizer-Acceptor Systems." Doctoral thesis, Stockholm : Department of Organic Chemistry, Stockholm University, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-411.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Sujka, Marta. "Alignment and rectifying properties of donor-electron bridge-acceptor molecules." Thesis, Cranfield University, 2007. http://hdl.handle.net/1826/2295.

Full text
Abstract:
Molecular electronics based on the bottom-up approach appears to be a promising alternative to overcome the limitations of the top-down lithographic fabrication of electronic devices. The ability to manipulate single or small groups of molecules provides a great opportunity to build electronic devices at the molecular level. However, before any device can be constructed, it is vital to understand the parameters that control the device properties such as: molecular structure, conformation and arrangement at the surface, the molecule-substrate and molecule-electrode interactions. This thesis presents an investigation of the alignment of acceptor-electron bridge-donor structures and describes how the molecular structure and arrangement affect rectifying properties of the monolayers. Studies included typical Langmuir-Blodgett (LB), chevron-shaped, and ionically coupled structures that were characterised using various techniques, such as Quartz Crystal Microbalance (QCM), Surface Plasmon Resonance (SPR), Second Harmonic Generation (SHG) and Scanning Tunnelling Spectroscopy (STS). The results obtained showed that to achieve high rectification the molecules must form ordered and stable monolayers that are able to withstand the electric field applied to the junction. It was also shown that due to the disordered monolayer formation and presence of certain ions, it was extremely difficult to state without doubt whether the rectification was a result of the donor-electron bridge-acceptor structure proposed by Aviram and Ratner1. Studies of chevron-shaped molecules confirmed the possibility of depositing them using the LB technique. However, the reduction of long aliphatic chains was very likely balanced by the formation of less ordered or unstable monolayers. The highest rectification ratio of 30 ± 3 at ± 1 V was obtained for 1-butyl-2,6-bis-[2-(4- dibutylamino-phenyl)-vinyl]-pyridinium iodide (dye 7) and the origin of the I-V asymmetry was attributed to back electron transfer from iodide to pyridinium ring. Although dye 1-butyl-2,6-bis-(2-{4-[2-(4-dibutylamino-phenyl)-ethyl]-phenyl}-vinyl)- pyridinium iodide (dye 9) showed electrical asymmetry (RR=16 at plus/minus 1 V) shortly after deposition onto the gold-coated highly oriented pyrolytic graphite (HOPG), it seemed to form an unstable alignment and as a consequence the rectification decayed over a period of a few hours. Improved ordering, stability, and rectification were achieved from ionically coupled structures, where the monolayers were formed using chemisorption and ionic assembly instead of physisorption.
APA, Harvard, Vancouver, ISO, and other styles
5

Keiderling, Chaz. "Photo-physical studies of electron acceptor function in organic photovoltaics." Thesis, Imperial College London, 2017. http://hdl.handle.net/10044/1/54645.

Full text
Abstract:
Substantial progress has been made in achieving increasingly high organic photovoltaics (OPV) power conversion efficiencies. Progress has largely been derived from the development of new donor materials, as until recently a notable scarcity of successful electron acceptor materials remained. [6,6]-phenyl C60 butyric acid methyl ester (PC60BM) or other fullerene derivatives have been the centrepiece of the accepting materials used throughout OPV research, and they have only recently been accompanied by rare examples of novel non-fullerene alternatives. However, the current understanding of the properties of effective electron acceptors for OPV is still relatively limited. In this thesis, attention is paid to the photophysical properties of accepting materials with respect to charge photogeneration and recombination. The work is comprised of three closely linked studies. The first is a detailed exploration of the photophysical properties expressed by PCxBM. This is followed by a consideration of a newly synthesised PDI derivative, tasked with specific design rules to address prior limitations identified by previous perylene diimide (PDI) acceptors. The third study entails a broad comparison of a selection of accepting materials utilising bilayer fabrication to remove morphological variation. Chapter 3 outlines detailed understandings of the photophysical properties of PCxBM excitons. In particular, exciton characteristics are reported as a function of film morphology. Transient absorption measurements show a significant reduction in intersystem crossing and strong shifts in excited state absorption spectra in neat PCxBM films when compared to dispersed molecules within an amorphous polystyrene system. Additionally, neat PCxBM films show an increased formation of free charges when compared to the dispersed systems. An alternative model of excitonic formation from PCxBM systems between aggregated and dispersed systems is proposed. Chapter 4 introduces a newly synthesised amorphous perylene, PDISO, that is designed to remove the typical problem of aggregation in blends. Using a range of spectroscopic and microscopy techniques, the progression of absorption to charge formation is characterised for PCDTBT:PDISO blend films, drawing a direct comparison to the same processes in PCDTBT:PC70BM blend films. In this way, PDISO is demonstrated to overcome key loss mechanisms previously reported to limit efficiencies in PDI blends and determines the optimum blend ratio for charge generation with PCDTBT. Chapters 5 and 6 jointly establish an understanding of solution-processed bilayers, which is followed by a comparison across several acceptors with the two polymers PCDTBT & PBDTTT-CT (chosen for their ability to generate charges). The comparison demonstrates that recombination dynamics fundamentally illustrate dramatic differences between acceptors. This provides evidence that morphologically independent charge dynamics can significantly affect overall device performance post separation. Correlations among the bilayer device performance, acceptor dielectric-mobility product and recombination dynamics are demonstrated. The outcomes in this thesis together draw a complex picture of multiple factors that affect the performance of electron-accepting materials in OPV. This provides a suitable platform for identifying important parameters when designing and testing new accepting materials. It also highlights potentially critical gaps in the current experimental understanding of fundamental charge interaction and recombination dynamics.
APA, Harvard, Vancouver, ISO, and other styles
6

Cubberley, Mark Stull. "Investigation of solvent effects in aromatic electron donor-acceptor interactions /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Hoefler, Christoph. "Preparation of electron donor and acceptor molecules for porphyrin derivatization." PDXScholar, 1992. https://pdxscholar.library.pdx.edu/open_access_etds/4317.

Full text
Abstract:
Porphyrins derivatized with electron donating and electron withdrawing groups can be used for artificial photosynthesis. Four new compounds, two electron donors and two electron acceptors, have been synthesized for prospective porphyrin linkages.
APA, Harvard, Vancouver, ISO, and other styles
8

Bröker, Benjamin. "Electronic and structural properties of interfaces between electron donor & acceptor molecules and conductive electrodes." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2011. http://dx.doi.org/10.18452/16257.

Full text
Abstract:
Die vorliegende Arbeit behandelt Fragestellungen aus der Organischen Elektronik, in der die Ladungsträgerinjektion in alle Arten von Bauteilen kritisch von der elektronischen und morphologischen Struktur der Grenzflächen zwischen Elektrode und den konjugierten organischen Molekülen (KOM) abhängt. Näher betrachtet wurden: die Energieniveauanpassung mit starken (i) Elektronendonatoren und (ii) -akzeptoren und (iii) die dichteabhängige Umorientierung einer molekularen Monolage. Zur Analyse wurden Photoelektronen- und Reflektionsabsorptionsinfrarotspektroskopie angewandt. Weitere Informationen konnten durch Modellierung mit Dichtefunktionaltheory gewonnen werden, die über Kollaborationen zur Verfügung standen. (i) Das Konzept der optimierten Energieniveauanpassung mit starken Elektronenakzeptoren konnte auf Donatoren erweitert und damit erfolgreich von der Anode zur Kathode transferiert werden. Auch hier führte der Ladungstransfer zu einem Dipol über die Grenzfläche, womit die Austrittsarbeit um bis zu 2.2 eV reduziert wurde. Als Resultat konnte die Elektroneninjektionsbarriere in nachfolgende Materialien entscheidend verringert werden (bis zu 0.8 eV). (ii) Ein bis dato unerforschter starker Elektronenaktzeptor [hexaaza-triphenylene-hexacarbonitrile (HATCN)] wurde vollständig verschiedenen Elektroden charakterisiert. HATCN zeigte dabei eine bessere Performance verglichen mit derzeit üblichen Materialien (starke Austrittsarbeitsanhebung und Verringerung der Lochinjektionsbarriere um bis zu 1.0 eV). (iii) Zusätzlich konnte mit HATCN gezeigt werden, dass eine liegende molekulare Monolage durch Erhöhung der Moleküldichte in eine stehende Monolage umgewandelt werden kann. Dies führte zu einer Änderung der chemischen Bindung zum Metall und damit zu einer starken Modifikation der elektronischen Struktur der Grenzfläche. Die vorliegende Arbeit liefert damit wertvolle Informationen für das Verständnis der Grenzfläche zwischen Elektrode und KOM in der Organischen Elektronik.
The present work is embedded in the field of organic electronics, where charge injection into devices is critically determined by the electronic and structural properties of the interfaces between the electrodes and the conjugated organic materials (COMs). Three main topics are addressed: energy level tuning with new and strong electron (i) donor and (ii) acceptor materials and (iii) the density dependent re-orientation of a molecular monolayer and its impact on the energy level alignment. To study these topics photoelectron and reflection absorption infrared spectroscopy were used. Moreover, additional information was obtained from density functional theory modelling, which was available through collaboration. (i) A concept of optimizing the energy level alignment at interfaces with strong molecular acceptors was extended to donor materials and thus successfully transferred from the anode to the cathode side of the device. Also in this case, charge transfer leads to a chemisorbed molecular monolayer. Due to the dipole across the interface, the work function of the electrode is reduced by up to 2.2 eV. Consequently, a reduced electron injection barrier into subsequently deposited materials is achieved (up to 0.8 eV). (ii) A yet unexplored strong electron acceptor material [i.e. hexaazatriphenylene- hexacarbonitrile (HATCN)] is thoroughly investigated on various surfaces. HATCN shows superior performance as electron acceptor material compared to presently used materials (e.g. work function modification and hole injection barrier reduction by up to 1 eV). (iii) Also with HATCN, the orientation of a molecular monolayer is observed to change from a face-on to an edge-on depending on layer density. This is accompanied by a re-hybridization of molecular and metal electronic states, which significantly modifies the interface electronic properties. All findings presented are valuable for the understanding of electrode-COM interfaces in organic electronics.
APA, Harvard, Vancouver, ISO, and other styles
9

Andersson, Mikael. "Tuning electron transfer reactions by selective excitation in porphyrin-acceptor assemblies." Doctoral thesis, Uppsala University, Department of Physical Chemistry, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-1080.

Full text
Abstract:

This thesis concerns electron transfer reactions from different excited states in porphyrins, and the effect of changing the energy of the link connecting the donor and acceptor. Photoinduced electron transfer, and subsequent processes were studied using ultrashort laser pulses and nanosecond laser flash photolysis.

Excitation of Zn(II)-porphyrins in the Soret band lead to population of the higher lying S2 state. The lifetime and transient absorption spectrum was measured for the S2 state. When an electron acceptor was attached to the Zn(II)-porphyrin, either as an ion pair, or covalently bound through an amide link, electron transfer was found to compete with S2 to S1 relaxation. In the ion pair, electron transfer was faster than 200 fs, with a lifetime of the charge separated state of 1.3 ps. Further, in the covalently linked dyad, the Zn(II) porphyrin triplet state was repopulated from a charge transfer state.

In [2]-rotaxanes, the Zn(II) porphyrin donor (ZnP) and Au(III) porphyrin acceptor (AuP+) are not connected by a direct covalent link. Selective excitation of either the ZnP or the AuP+ resulted in rapid electron transfer from the ZnP to the AuP+. The bis-phenanthroline link connecting the. different porphyrins was changed by coordination of Cu(I) or Ag(I). Electron transfer from the 1ZnP singlet was unaffected by coordination of either Ag(I) or Cu(I), while electron transfer to the 3AuP+ triplet was in the Ag(I) link found to occur by an enhanced superexchange, and by a sequential mechanism in the Cu(I) coordinated link.

APA, Harvard, Vancouver, ISO, and other styles
10

Göransson, Erik. "Bridge Mediated Electron Transfer in Conjugated and Cross-Conjugated Donor-Acceptor Compounds." Doctoral thesis, Uppsala universitet, Fysikalisk kemi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-180442.

Full text
Abstract:
Detailed understanding of electron transfer reactions is important in many aspects of chemistry, biology and solar energy conversion. The main aim of this thesis is to provide further insight into electron transfer through highly conjugated bridge structures. Towards this end, three series of donor-acceptor dyads have been studied, all using an oligo(1,4-phenylene-ethynylene) moiety as the bridge. A common theme in these series is that they explore the effects of having either an ethynylene or phenylene as the attachment group between the bridge and the donor or acceptor. Photophysical characterization of these dyads was carried out by means of time resolved laser spectroscopy. The results show that having an ethynylene as attachment group results in higher rates for bridge mediated electron and energy transfer compared to similar systems, where a phenylene was used. It was also found that most of the investigated systems show a fast back electron transfer. A notable exception is a zinc(II) phthalocyanine- gold(III) porphyrin dyad, where very fast photoinduced electron transfer (kPET = 1.0×1012 s-1) was followed by relatively slow back electron transfer (kBET = 1.0×109 s-1). A complementary DFT investigation indicated that the charge shifted state involves a reduction of the gold ion, rather than the porphyrin ring. This results in lower electronic coupling between the reduced gold porphyrin and the bridge and thus slower back electron transfer. A series of zinc porphyrin platinum acetylide dyads was used to explore the effects on electronic coupling of different attachments points on the porphyrin ring. For the investigated system it was found that linking at the meso-position results in an eight-fold increase in electron transfer rate compared to the β-position. In addition, a series of mixed valence compounds was used to investigate electronic coupling mediated by cross-hyperconjugated or cross-π-conjugated bridges. The results indicate coupling elements of 100-400 cm-1, with the cross-π-conjugated bridge having the largest coupling. A complementary TD-DFT study indicates that both through bond and through space coupling can be active in these systems. The relative contribution of these two mechanisms to the electronic coupling is highly conformer dependent.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Electron acceptor"

1

1946-, Gokel George W., and Koga Kenji 1938-, eds. United States-Japan Seminar on Host-Guest Chemistry: Proceedings of the U.S.-Japan Seminar on Host-Guest Chemistry, Miami, Florida, U.S.A., 2-6 November 1987. Dordrecht: Kluwer Academic Publishers, 1989.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Barbato, Jeffrey R. Biotransformation of gasoline-contaminated groundwater under mixed electron-acceptor conditions. Cincinnati, OH: National Risk Management Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, 1999.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Drago, Russell S. Applications of electrostatic-covalent models in chemistry. Gainesville, FL (P.O. Box 13413, Gainesville 32604): Surfside Scientific Publishers, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Kapinus, E. I. Fotonika molekuli͡a︡rnykh kompleksov. Kiev: Nauk. dumka, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Jaworska-Augustyniak, Anna. Fotochemiczne własności elektrono-donorowo-akceptorowych kompleksów ferrocenu, kobaltocenu i niklocenu. Poznań: Wydawn. Nauk. Uniwersytetu im. Adama Mickiewicza w Poznaniu, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

1939-, Vögtle F., and Weber E, eds. Host guest complex chemistry: Macrocycles : synthesis, structures, applications. Berlin: Springer, 1985.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

T, Pantelides Sokrates, ed. Deep centers in semiconductors: A state-of-the-art approach. 2nd ed. Yverdon, Switzerland: Gordon and Breach Science Publishers, 1992.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

T, Pantelides Sokrates, ed. Deep centers in semiconductors: A state of the art approach. New York: Gordon and Breach, 1986.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Pawlukojć, Andrzej. Badania widm oscylacyjnych, w obszarze niskich częstości, wybranych kompleksów molekularnych z przeniesieniem ładunku oraz ich składników metodą nieelastycznego rozpraszania neutronów termicznych. Warszawa: Instytut Chemii i Techniki Jądrowej, 2006.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Joshua, Jortner, Bixon M, Prigogine I, and Rice Stuart Alan 1932-, eds. Electron transfer- from isolated molecules to biomolecules. New York: J. Wiley, 1999.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Electron acceptor"

1

Peretó, Juli. "Electron Acceptor." In Encyclopedia of Astrobiology, 715–16. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44185-5_494.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Peretó, Juli. "Electron Acceptor." In Encyclopedia of Astrobiology, 482. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-11274-4_494.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Gooch, Jan W. "Electron Acceptor." In Encyclopedic Dictionary of Polymers, 889. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_13620.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Peretó, Juli. "Electron Acceptor." In Encyclopedia of Astrobiology, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-27833-4_494-2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Imahori, Hiroshi, Dirk M. Guldi, and Shunichi Fukuzumi. "Novel Electron Donor Acceptor Nanocomposites." In Chemistry of Nanocarbons, 93–127. Chichester, UK: John Wiley & Sons, Ltd, 2010. http://dx.doi.org/10.1002/9780470660188.ch4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Fukuzumi, Shunichi. "Photoinduced Electron-Transfer Functions of π-Electron Donor–Acceptor Supramolecular Complexes." In Chemical Science of π-Electron Systems, 529–43. Tokyo: Springer Japan, 2015. http://dx.doi.org/10.1007/978-4-431-55357-1_31.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Heitele, H., and M. E. Michel-Beyerle. "Electron Transfer Through Aromatic Spacers in Bridged Electron-Donor-Acceptor Molecules." In Antennas and Reaction Centers of Photosynthetic Bacteria, 250–55. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-82688-7_35.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

King, Tsoo E., and Yan Xu. "QP-S — The Electron Acceptor of Succinate Dehydrogenase." In Cytochrome Systems, 503–8. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4613-1941-2_70.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Fischer, S. F., I. Nussbaum, and P. O. J. Scherer. "Electron Transfer in Rigidly Linked Donor-Acceptor Systems." In Antennas and Reaction Centers of Photosynthetic Bacteria, 256–63. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-82688-7_36.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Bockman, T. M., and J. K. Kochi. "Electron Donor-Acceptor Interactions and Photo-Induced Electron Transfer of Organometallic Compounds." In Catalysis by Metal Complexes, 407–48. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-017-2626-9_14.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Electron acceptor"

1

Ouitrakul, Sarinee, Mana Sriyudthsak, and Toshihide Kakizono. "Effect of Electron Acceptor in Bio-Fuel Cell." In 2006 1st IEEE International Conference on Nano/Micro Engineered and Molecular Systems. IEEE, 2006. http://dx.doi.org/10.1109/nems.2006.334782.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Lyong Sun Pu. "New electron acceptor; cyclobutenediones for nonlinear optical materials." In International Conference on Science and Technology of Synthetic Metals. IEEE, 1994. http://dx.doi.org/10.1109/stsm.1994.836130.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Lin, Liang-Bih, William T. Gruenbaum, Jeanne E. Kaeding, David S. Weiss, Samson A. Jenekhe, and Paul M. Borsenberger. "Free-carrier photogeneration in electron donor, electron acceptor, and bifunctional molecular glasses." In SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, edited by Stephen Ducharme and James W. Stasiak. SPIE, 1998. http://dx.doi.org/10.1117/12.328164.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Barker, Alex J., Sreelakshmi Chandrabose, Kai Chen, Joshua J. Sutton, Shyamal Prasad, Jingshuai Zhu, Keith C. Gordon, Zenqi Xie, Xiaowei Zhan, and Justin M. Hodgkiss. "Facile Exciton Diffusion in Fused Ring Electron Acceptor Films." In 11th International Conference on Hybrid and Organic Photovoltaics. València: Fundació Scito, 2019. http://dx.doi.org/10.29363/nanoge.hopv.2019.174.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Margetić, Davor. "Synthesis of 7-silanorbornene Electron Donor-Acceptor Polycyclic Dyads." In The 9th International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland: MDPI, 2005. http://dx.doi.org/10.3390/ecsoc-9-01465.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

McGuire, Brett, Michael McCarthy, and Marie-Aline Martin-Drumel. "THE ETHANOL-CO2 DIMER IS AN ELECTRON DONOR-ACCEPTOR COMPLEX." In 72nd International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2017. http://dx.doi.org/10.15278/isms.2017.rh06.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Guldi, Dirk M., Michele Maggini, Simonetta Mondini, Gianfranco Scorrano, and Maurizio Prato. "Photoinduced electron transfer in fullerenes containing donor-bridge-acceptor dyads." In Optical Science, Engineering and Instrumentation '97, edited by Zakya H. Kafafi. SPIE, 1997. http://dx.doi.org/10.1117/12.283756.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Chowdhury, Nadim, Qingyun Xie, John Niroula, Nitul S. Rajput, Kai Cheng, Han Wui Then, and Tomas Palacios. "Field-induced Acceptor Ionization in Enhancement-mode GaN p-MOSFETs." In 2020 IEEE International Electron Devices Meeting (IEDM). IEEE, 2020. http://dx.doi.org/10.1109/iedm13553.2020.9371963.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

van Hal, P. A., E. Peeters, B. M. W. Langeveld-Voss, R. A. J. Janssen, G. Lanzani, G. Cerullo, C. Gadermaier, et al. "Ultrafast energy and electron transfer in donor-acceptor molecules for photovoltaics." In CLEO 2001. Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics. Postconference Technical Digest. IEEE, 2001. http://dx.doi.org/10.1109/cleo.2001.947465.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Seifrid, Martin, Steve Halaby, Michael Martynowycz, Ziyue Zhu, Sergei Tretiak, Andriy Zhugayevych, and Tamir Gonen. "Microcrystal Electron Diffraction for Molecular Design of Functional Non-Fullerene Acceptor Structures." In NFA-Based Organic Solar Cells: Materials, Morphology and Fundamentals. València: Fundació Scito, 2021. http://dx.doi.org/10.29363/nanoge.nfasc.2021.006.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Electron acceptor"

1

D. MCBRANCH and ET AL. ULTRAFAST SOLID-STATE ELECTRON TRANSFER IN DONOR-ACCEPTOR CONDUCTING POLYMERS. Office of Scientific and Technical Information (OSTI), December 2000. http://dx.doi.org/10.2172/768861.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Hoefler, Christoph. Preparation of electron donor and acceptor molecules for porphyrin derivatization. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.6201.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Phelps, D. K., J. R. Gord, B. S. Freiser, and M. J. Weaver. The Effects of Donor-Acceptor Electronic Interactions on the Rates of Gas-Phase Metallocene Electron-Exchange Reactions. Fort Belvoir, VA: Defense Technical Information Center, May 1991. http://dx.doi.org/10.21236/ada237459.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Newton, M. D., S. W. Feldberg, and J. F. Smalley. Theory and computational modeling: Medium reorganization and donor/acceptor coupling in electron transfer processes. Office of Scientific and Technical Information (OSTI), March 1998. http://dx.doi.org/10.2172/653946.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Isied, Stephan S. Transition Metal Donor-Peptide-Acceptor Complexes: From Intramolecular Electron Transfer Reactions to the Study of Reactive Intermediates. Office of Scientific and Technical Information (OSTI), March 2003. http://dx.doi.org/10.2172/899301.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Yates, Jr, and John T. Carbon Single Walled Nanotubes- Electron Acceptor Molecules for Improving the Efficiency of the Photoexcitation of TiO2 for Solar-Driven Technologies. Fort Belvoir, VA: Defense Technical Information Center, October 2012. http://dx.doi.org/10.21236/ada574813.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Mehari, Tetemke. Resolution and Reconstitution of the Photosystem I Reaction Center: Structure and Function of the Terminal Electron Acceptor FA/FB Polypeptide. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.1255.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Santoyo, C., M. R. Ceron, and M. M. Biener. Integration of Fullerenes as Electron-Acceptors in 3D Graphene Networks. Office of Scientific and Technical Information (OSTI), August 2019. http://dx.doi.org/10.2172/1567989.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Forsythe, Eric, Jianmin Shi, and David Morton. Next Generation Highly Conducting Organic Films Using Novel Donor-Acceptor Molecules for Opto-Electronic Applications. Fort Belvoir, VA: Defense Technical Information Center, June 2009. http://dx.doi.org/10.21236/ada499643.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Van Rijn, Jaap, Harold Schreier, and Yossi Tal. Anaerobic ammonia oxidation as a novel approach for water treatment in marine and freshwater aquaculture recirculating systems. United States Department of Agriculture, December 2006. http://dx.doi.org/10.32747/2006.7696511.bard.

Full text
Abstract:
Ammonia waste removal in recirculating aquaculture systems is typically accomplished via the action of nitrifying bacteria in specially designed biofilters that oxidize ammonia to produce nitrate. In the majority of these systems nitrate is discharged to the environment through frequent water exchanges. As environmental considerations have made it necessary to eliminate nitrate release, new strategies for nitrate consumption are being developed. In the funding period we showed that ammonia removal from wastewater could take place by an anaerobic ammonia oxidation process carried out by bacterial Planctomycetessp. Referred to as “anammox”, this process occurs in the absence of an organic source and in the presence of nitrite (or nitrate) as an electron acceptor as follows: NH₃ + HNO₂ -> N₂ + 2H₂O. Annamox has been estimated to result in savings of up to 90% of the costs associated with was wastewater treatment plants. Our objective was to study the applicability of the anammox process in a variety of recirculating aquaculture systems to determine optimal conditions necessary for efficient ammonia waste removal. Both seawater and freshwater systems operated with either conventional aerobic treatment of ammonia to nitrate (USA) or, in addition, denitrifying biofilters as well as anaerobic digestion of sludge (Israel) were tested. Molecular tools were used to screen and monitor different treatment compartments for the presence of Planctomycetes. Optimal conditions for the enrichment of the anammox bacteria were tested using laboratory scale biofilters as well as a semi-commercial system. Enrichment studies resulted in the isolation of some unique heterotrophic bacteria capable of plasmid-mediated autotrophic growth in the presence of ammonia and nitrite. Our studies have not only demonstrated the presence and viability of Planctomycetes spp. in recirculating marine and freshwater systems biofilter units but also demonstrated the applicability of the anammox process in these systems. Using our results we have developed treatment schemes that have allowed for optimizing the anammox process and applying it to recirculating systems.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Electron acceptor' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography