Relevant bibliographies by topics / Double resonance ir uv

Contents

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

Academic literature on the topic 'Double resonance ir uv'

Author: Grafiati
Published: 4 June 2021
Last updated: 3 February 2022

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 'Double resonance ir uv.'

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 "Double resonance ir uv"

1

Callahan, Michael P., Bridgit Crews, Ali Abo-Riziq, Louis Grace, Mattanjah S. de Vries, Zsolt Gengeliczki, Tiffani M. Holmes, and Glake A. Hill. "IR-UV double resonance spectroscopy of xanthine." Physical Chemistry Chemical Physics 9, no. 32 (2007): 4587. http://dx.doi.org/10.1039/b705042a.

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

Longarte, Asier, Carolina Redondo, José A. Fernández, and Fernando Castaño. "IR/UV and UV/UV double-resonance study of guaiacol and eugenol dimers." Journal of Chemical Physics 122, no. 16 (April 22, 2005): 164304. http://dx.doi.org/10.1063/1.1881232.

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

Crews, Bridgit, Ali Abo-Riziq, Louis Grace, Michael Callahan, Martin Kabeláč, Pavel Hobza, and Mattanjah S. de Vries. "IR-UV double resonance spectroscopy of guanine–H2O clusters." Physical Chemistry Chemical Physics 7, no. 16 (2005): 3015. http://dx.doi.org/10.1039/b506107e.

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

Plützer, Chr, E. Nir, M. S. de Vries, and K. Kleinermanns. "IR–UV double-resonance spectroscopy of the nucleobase adenine." Physical Chemistry Chemical Physics 3, no. 24 (December 5, 2001): 5466–69. http://dx.doi.org/10.1039/b107997b.

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

Inokuchi, Yoshiya, Yusuke Kobayashi, Takafumi Ito, and Takayuki Ebata. "Conformation ofl-Tyrosine Studied by Fluorescence-Detected UV−UV and IR−UV Double-Resonance Spectroscopy." Journal of Physical Chemistry A 111, no. 17 (May 2007): 3209–15. http://dx.doi.org/10.1021/jp070163a.

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

Wang, X. M., G. Y. Wu, P. X. Ding, J. D. Chen, W. B. Gao, H. T. Ji, and S. H. Liu. "Vibrational energy transfer study of C6H6 by IR-UV double resonance." Chemical Physics Letters 125, no. 5-6 (April 1986): 537–42. http://dx.doi.org/10.1016/0009-2614(86)87094-4.

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

Abo-Riziq, Ali G., Bridgit Crews, John E. Bushnell, Michael P. Callahan, and Mattanjah S. De Vries *. "Conformational analysis of cyclo(Phe-Ser) by UV–UV and IR–UV double resonance spectroscopy andab initiocalculations." Molecular Physics 103, no. 11-12 (June 10, 2005): 1491–95. http://dx.doi.org/10.1080/00268970500095923.

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

Fischer, Kathrin H., Jörg Herterich, Ingo Fischer, Sander Jaeqx, and Anouk M. Rijs. "Phenylpropargyl Radicals and Their Dimerization Products: An IR/UV Double Resonance Study." Journal of Physical Chemistry A 116, no. 33 (August 10, 2012): 8515–22. http://dx.doi.org/10.1021/jp306075a.

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

Bouchet, Aude, Johanna Klyne, Shun-ichi Ishiuchi, Otto Dopfer, Masaaki Fujii, and Anne Zehnacker. "Stereochemistry-dependent structure of hydrogen-bonded protonated dimers: the case of 1-amino-2-indanol." Physical Chemistry Chemical Physics 20, no. 18 (2018): 12430–43. http://dx.doi.org/10.1039/c8cp00787j.

Full text
Abstract:
Stereochemistry effects on the structure of molecular aggregates are studied in the prototypical 1-amino-2-indanol. Conformer-selective IR-UV double resonance spectroscopy reveals how stereochemistry shapes its dimers.
APA, Harvard, Vancouver, ISO, and other styles
10

Fujii, Masaaki, Shigeki Tanabe, Yasuo Okuzawa, and Mitsuo Ito. "IR-UV Double Resonance Spectrum of Acetylene Below and Above the Predissociation Threshold." Laser Chemistry 14, no. 1-3 (January 1, 1994): 161–82. http://dx.doi.org/10.1155/1994/76165.

Full text
Abstract:
The Ã1Au ← X˜1∑g+ electronic transition of the vibrationally excited acetylene molecule was studied by IR–UV double resonance spectroscopy in gas and in a supersonic jet. The C–H antisymmetric stretching vibration νCHant in the à state was clearly observed when the molecule was excited to the νCHsym + νCHant combination vibration in the X˜ state by the IR laser. When the νCHant fundamental vibration was excited, the C–H in-plane cis-bending vibration νcis(in) in the à state was observed strongly, while νCHant almost disappeared. The difference was interpreted in terms of Fermi resonance of the νCHant fundamental vibration in X˜. The predissociation threshold was newly determined to be 46,439˼46,673 cm-1 (133.11 ± 0.33 kcal/mol). In the region above the predissociation threshold, strong vibrational mixing was found. The higher members of the progression of the trans-bending vibration starting from νCHant were assigned. It was suggested that the nonradiative relaxation accelerated in the region above 51,744 cm-1.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Double resonance ir uv"

1

McNaghten, Edward Dennison. "Some studies of gas phase vibrational energy transfer processes using the IR-UV double resonance technique." Thesis, Queen's University Belfast, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329391.

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

Michaille, Laurent. "Étude des états vibrationnels très excités de la molécule CS2 : dynamique non linéaire et corrélations spectrales." Université Joseph Fourier (Grenoble ; 1971-2015), 1998. http://www.theses.fr/1998GRE10009.

Full text
Abstract:
Pour les etats de vibration tres excites de certaines molecules, l'attribution en termes des nombres quantiques usuels n'est plus valable. Dans cs#2, les modes d'elongation symetrique et de pliage sont fortement couples par une resonance non lineaire de fermi. Au moins a basse energie le mode d'elongation antisymetrique reste faiblement couple par des anharmonicites. La dynamique quantique, classique et semiclassique de ce modele tres important en physique moleculaire est etudie en detail. Il est montre comment les bifurcations successives des orbites periodiques permettent de rendre compte de l'evolution de la dynamique quantique en fonction de l'energie. L'etude du vibrogramme permet egalement d'evaluer la validite du modele de fermi entre 12000 et 19000 cm##1 dans un domaine ou elle n'etait pas connue. Nous avons ensuite effectue des experiences de fluorescence resolue a plus de 19000 cm##1 au-dessus du fondamental afin de pratiquer les statistiques spectrales permettant de caracteriser le chaos quantique. Pres de 400 raies experimentales ont ete obtenues. L'analyse demontre plusieurs points importants. En premier lieu, la transition vers le chaos quantique de la molecule vers 13000 cm##1 est remise en question a cause d'une excitation impure. D'autre part, nous avons montre le role de la resolution sur les statistiques spectrales. Des spectres mal resolus peuvent presenter des correlations qui sont des artefacts. Ceci nous a conduit a remettre en question toutes les preuves experimentales existantes de l'existence de chaos quantique vibrationnel dans les molecules. Afin d'obtenir des spectres vibrationnels purs, nous avons developpe deux nouvelles experiences pour la spectroscopie de cs#2 : la double resonance i-r u-v et un jet supersonique. Si les transferts rotationnels observes en double resonance rendent difficiles l'utilisation de cette technique, le jet supersonique permet d'exciter veritablement une raie unique.
APA, Harvard, Vancouver, ISO, and other styles
3

Seurre, N. "ÉTUDE PAR SPECTROSCOPIE DE DOUBLE RÉSONANCE IR{UV DE COMPLEXES à LIAISONS HYDROGENE FORMES EN JET SUPERSONIQUE: APPLICATION AUX INTERACTIONS ENANTIOSELECTIVES." Phd thesis, Université Paris Sud - Paris XI, 2004. http://tel.archives-ouvertes.fr/tel-00466957.

Full text
Abstract:
La reconnaissance chirale joue un rôle fondamental dans la chimie du vivant. On suppose qu'elle a lieu grâce à la formation de paires de contact transitoires et faiblement liées dont l'étude est difficile en solution. C'est pourquoi nous avons étudié ces paires faiblement liées isolées en phase gazeuse à basse température en jet supersonique, par spectroscopie laser électronique et vibrationnelle. Le but de ce travail est la compréhension au niveau microscopique des forces responsables de la reconnaissance chirale.
APA, Harvard, Vancouver, ISO, and other styles
4

Seurre, Nathalie. "Etude par spectroscopie de double résonance IR-UV de complexes à liaisons hydrogène formés en jet supersonique : application aux interactions énantiosélectives." Paris 11, 2004. https://tel.archives-ouvertes.fr/tel-00466957.

Full text
Abstract:
La discrimination chirale joue un rôle fondamental dans la chimie du vivant. Elle implique des interactions spécifiques à travers la formation de paires de contact diastéréoisomères, souvent de nature transitoire. La technique du jet supersonique permet de stabiliser en phase gazeuse ces espèces peu liées. La combinaison de la spectroscopie laser (fluorescence induite par laser et double résonance IR-UV) et de calculs DFT permet de caractériser ces systèmes et d'étudier à l'échelle moléculaire les forces impliquées dans la reconnaissance chirale. Les complexes diastéréoisomères formés présentent des interactions différentes. Les déplacements spécifiques des transitions électroniques et vibrationnelles sont utilisés pour caractériser spectroscopiquement les complexes. Le travail réalisé consiste à former des complexes entre un chromophore chiral le (R/S)-2-naphtyl-1-ethanol et différentes sortes de solvants. Dans une première partie, nous nous sommes intéressés à des systèmes modèles constitués du chromophore et d'une ou deux molécules de méthanol ou d'eau. La seconde partie du travail met en jeu des molécules bifonctionnelles (amino-alcool ou hydroxy-ester) chirales. Ces études ont pumettre en évidence la diversité des structures observées, les liaisons hydrogène impliquées et leur rôle dans la préférence énantiomérique. On a observé entre autre dans le cas des amino-alcools une énantiosélectivité dans le type de liaison hydrogène formée (OHN ou OHO). Les complexes formés entre le chromophore et les hydroxy-esters montrent quant à eux une énantiosélectivité qui se manifeste au niveau de la taille des agrégats
Chiral discrimination plays a fundamental role in life chemistry. Specific interactions are involved in transient diastereoisomeric contact pairs. Supersonic jet expansion allows the stabilisation in gas phase of these weakly bonded systems. Laser spectroscopy (Laser Induced Fluorescence and double resonance IR-UV spectroscopy) combined with Density Functional calculations are employed to characterise these systems and to study, at the molecular level, the forces involved in the chiral recognition. The experiments consist in the complexation of a chiral fluorescent chromophore ((R/S)-2-naphtyl-1-ethanol) with different sort of solvent. The interactions at play in diastereoisomers induce a different stabilisation of the excited and fundamental states relatively to the bare chromophore. Specific shifts of the electronic and vibrational transitions are used to characterise the systems. In the first part of this work, we study simple systems made of the chromophore and one or two molecules of methanol or water. The second part deals with bifunctional (amino-alcools and hydroxy-esters) chiral molecules. We show the diversity of the observed structures and the role of the hydrogen bonds in the enantiospecificity. The complexes with amino-alcools, show a pronounced enantioselectivity in the formation of the hydrogen bond (OHN or OHO). In the case of complexes with hydroxy-esters, chiral discrimination takes place at a stoechiometric level
APA, Harvard, Vancouver, ISO, and other styles
5

Offenbacher, Adam R. "Protein structural changes and tyrosyl radical-mediated electron transfer reactions in ribonucleotide reductase and model compounds." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/39473.

Full text
Abstract:
Tyrosyl radicals can facilitate proton-coupled electron transfer (PCET) reactions that are linked to catalysis in many biological systems. One such protein system is ribonucleotide reductase (RNR). This enzyme is responsible for the conversion of ribonucleotides to deoxyribonucleotides. The beta2 subunit of class Ia RNRs contains a diiron cluster and a stable tyrosyl radical (Y122*). Reduction of ribonucleotides is dependent on reversible, long-distance PCET reactions involving Y122* located 35 Å from the active site. Protein conformational dynamics are postulated to precede diiron cluster assembly and PCET reactions in RNR. Using UV resonance Raman spectroscopy, we identified structural changes to histidine, tyrosine, and tryptophan residues with metal cluster assembly in beta2. With a reaction-induced infrared spectroscopic technique, local amide bond structural changes, which are associated with the reduction of Y122*, were observed. Moreover, infrared spectroscopy of tyrosine-containing pentapeptide model compounds supported the hypothesis that local amide bonds are perturbed with tyrosyl radical formation. These findings demonstrate the importance of the amino acid primary sequence and amide bonds on tyrosyl radical redox changes. We also investigated the function of a unique tyrosine-histidine cross-link, which is found in the active site of cytochrome c oxidase (CcO). Spectrophotometric titrations of model compounds that mimic the cross-link were consistent with a proton transfer role in CcO. Infrared spectroscopic data support the formation of tyrosyl radicals in these model compounds. Collectively, the effect of the local structure and the corresponding protein dynamics involved in tyrosyl radical-mediated PCET reactions are illustrated in this work.
APA, Harvard, Vancouver, ISO, and other styles
6

Luck, Meike. "Erstcharakterisierung von Histidinkinase-Rhodopsinen aus einzelligen Grünalgen." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19607.

Full text
Abstract:
Histidinkinase-Rhodopsine (HKRs) können als besondere Gruppe der Hybrid-Histidinkinasen beschrieben werden, deren N-terminale sensorische Domäne ein mikrobielles Rhodopsin ist. HKR-codierende Sequenzen konnten in den Genomen verschiedener Algen, Pilze und Amoeben gefunden werden doch ihre Aufgaben und Wirkungsweisen sind bisher ungeklärt. Im Rahmen dieser Arbeit wurden die rekombinanten Rhodopsin-Domänen von zwei HKRs mit verschiedenen spektroskopischen Techniken charakterisiert. Sie zeigten mehrere Besonderheiten. Das Rhodopsin-Fragment von Cr-HKR1 aus Chlamydomonas reinhardtii kann durch alternierende kurzwellige und langwellige Belichtung zwischen zwei stabilen Absorptionsformen konvertiert werden: einer Blaulicht-absorbierenden (Rh-Bl) und einer UVA-Licht-absorbierenden Form (Rh-UV). Dies resultiert aus der ungewöhnlichen thermischen Stabilität des Zustandes mit deprotonierter Schiff’scher Base. Das zweite charakterisierte HKR, die Os-HKR-Rhodopsin-Domäne aus der marinen Picoalge Ostreococcus tauri, zeigt eine Dunkelabsorption von 505 nm. Auch Os-HKR ist photochrom und die deprotonierte Spezies kann effizient akkumuliert werden. Diese P400-Absorptionsform ist jedoch nicht völlig stabil sondern es kommt nach Belichtungsende zur langsamen Dunkelzustands-Regeneration. Überraschenderweise konnte die Bindung sowie die transiente Abgabe eines Anions während des Os-HKR-Photozyklus festgestellt werden. Somit beeinflusst nicht nur das Licht, sondern auch das Salz in der Umgebung die Os-HKR-Reaktionen. Aufgrund ihrer photochromen Eigenschaften werden die HKRs als wirksame lichtinduzierte Schalter für die C-terminalen Signaltransduktionsdomänen postuliert. Schwingungsspektroskopische Analysen deckten eine Heterogenität hinsichtlich der im Protein gebundenen Retinal‐Konfiguration sowie die Existenz von zwei parallelen Photozyklen auf. Jeder dieser Photozyklen geht aus einer der beiden Retinal-Isomere hervor.
Histidine kinase rhodopsins (HKRs) can be described as hybrid histidine kinases with a microbial rhodopsin as N-terminal sensory domain. HKR-encoding sequences were found in the genomes of various unicellular organisms such as algae, fungi and amoeba but their mechanistic and physiologic function is unknown. During this work the absorptive properties of the recombinant rhodopsin domains of two HKRs were studied by the usage of different spectroscopic techniques. Both HKRs showed unusual characteristics. The rhodopsin fragment of Cr‐HKR1 from Chlamydomonas reinhardtii can be interconverted between two stable absorbance forms by the alternate application of short‐ and long‐wavelength light: a blue light-absorbing dark form (Rh-Bl) and a UVA light-absorbing form (Rh-UV). This unusual photocycle results from the uncommon thermal stability of the absorbance state with a deprotonated retinal Schiff base. The second studied HKR, the Os‐HKR rhodopsin domain from the marine picoalga Ostreococcus tauri, shows an absorbance maximum at 505 nm in darkness. Likewise Cr‐HKR1 the Os‐HKR is photochromic and the deprotonated form P400 can be efficiently accumulated. But the Os-HKR P400-form is not completely stable. A slow dark state recovery occurs. Surprisingly the dark state absorbance of Os‐HKR was found to be dependent on anion binding in the protein. Furthermore during the photocycle the transient anion release occurs and therefore not only light but also salt impacts the Os-HKR-reactions. Due to their pronounced photochromic properties, the HKRs are postulated to act as effective molecular switches for the C-terminal signal transduction domains in response to the light conditions. Vibrational spectroscopy revealed the heterogeneity with regard to the retinal configuration bound in the HKRs suggesting the existence of two parallel photocycles. Either of these photocycles originates from one of the two retinal isoforms.
APA, Harvard, Vancouver, ISO, and other styles
7

Mahjoub, Ahmed. "PROCESSUS ÉNANTIOSÉLÉCTIFS DANS DES COMPLEXES À LIAISONS HYDROGÈNE." Phd thesis, Université Paris Sud - Paris XI, 2009. http://tel.archives-ouvertes.fr/tel-00459590.

Full text
Abstract:
La chiralité joue un rôle très important dans la chimie du vivant. En effet, la plupart des molécules biologiques sont chirales. La discrimination chirale met en jeu des interactions spécifiques à travers la formation de paires de contact diastéréoisomères en phase condensée. Le sujet de ce travail de thèse est d'étudier ces interactions énantiosélectives à l'échelle moléculaire, en étudiant en phase gazeuse des complexes chiraux formés en jet supersonique. Le principe de l'expérience repose sur la complexation d'une forme énantiomère pure d'un chromophore avec les deux énantiomères d'un solvant chiral. Les diastéréoisomères ainsi formés possèdent deux structures différentes. Cette différence de structure se manifeste par deux signatures spectroscopiques différentes. La combinaison de la spectroscopie laser (électronique et vibrationnelle) et des calculs théoriques permet d'étudier les interactions responsables de la discrimination chirale. Ce travail de thèse consiste en l'étude de la discrimination chirale de deux énantiomères du Méthyl-lactate, en utilisant trois chromophores chiraux différents : le (±)-cis-1-amino-indan-2-ol ; le Méthyl-mandélate et le S(-) 1,2,3,4-tetrahydro-3-isoquinoléine méthanol. Ces trois systèmes nous ont permis d'étudier le rôle dans la discrimination chirale de trois facteurs importants qui sont : la formation des multiples liaisons hydrogène, les forces dispersives et l'isomérie conformationnelle.
APA, Harvard, Vancouver, ISO, and other styles
8

Tarabek, Jan. "Elektropolymerisation, Spektroelektrochemie und Potentiometrie von funktionalisierten leitfähigen Polymeren." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2004. http://nbn-resolving.de/urn:nbn:de:swb:14-1103635385062-58674.

Full text
Abstract:
Die vorliegende Arbeit behandelt die elektrochemische Synthese (elektrochemische Polymerisation und Copolymerisation) und die Charakterisierung der Redox- und sensorischen Eigenschaften neuer funktionalisierter Polymere für die Ionensensorik. Die Funktionalisierung wird sowohl in der Polymer-Hauptkette (Polysalene) als auch in der Polymer-Seitenkette (ein Thiophen-Copolymer: 3-Methylthiophen/6-Hydroxy-2-(2-(3-thienyl)-ethoxy)-acetophenon) dargestellt. Die Redox-Prozesse der funktionalisierten Polymere wurden mit spektroelektrochemischen Methoden: ESR-, UV-Vis-NIR- und FTIR-Spektroelektrochemie charakterisiert. Durch diese Methoden konnten während der elektrochemischen Oxidation von funktionalisierten leitfähigen Polymeren verschiedene Polymer- bzw. Copolymer-Ladungsträger nachgewiesen werden: Polaronen, Bipolaronen beim Thiophen-Copolymer, zwei Polaronen auf einer Polymerkette im Singulettezustand beim Poly(3-methylthiophen) und eine diamagnetische Spin-Spin-Wechselwirkung zwischen ungepaarten Elektronen der Cu(II)-Ionen und der ungepaarten Elektronen von bisphenolischen Ligand-Kationradikalen beim Poly[Cu(II)-salen]. Sensorische Eigenschaften gegenüber Ni(II)-Ionen wurden durch Potentiometrie an einem Poly[Ni(II)-salen]-Derivat getestet. Es zeigt eine gute potentiometrische Ni(II)-Ionenselektivität (der Logarithmus des potentiometrischen Selektivitätskoeffizienten liegt im Bereich von -0.5 bis -1.5) in Anwesenheit von Cd(II), Mn(II), Zn(II) und Na(I).
APA, Harvard, Vancouver, ISO, and other styles
9

Fritz, Mark David. "The characterization of highly excited rovibrational states two-dimensional IR-UV double resonance and photoacoustic spectroscopy of acetylene and formaldehyde /." 1993. http://catalog.hathitrust.org/api/volumes/oclc/31370853.html.

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

Dionne, Éric. "Cage de résonance à base de films minces transparents et conducteurs de nanotubes de carbone." Thèse, 2008. http://hdl.handle.net/1866/7812.

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

Books on the topic "Double resonance ir uv"

1

McNaghten, Edward Dennison. Some studies of gas phase vibrational energy transfer processes using the IR-UV double resonancetechnique. 1986.

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

Book chapters on the topic "Double resonance ir uv"

1

Wang, X. M., G. Y. Wu, P. X. Ding, J. D. Chen, W. B. Gao, H. T. Ji, and S. H. Liu. "Vibrational Energy Transfer Study of Benzene by IR-UV Double Resonance." In Springer Series in Optical Sciences, 159–60. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-540-39664-2_47.

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

Okamoto, Koichi. "Tuning of the Surface Plasmon Resonance in the UV-IR Range for Wider Applications." In ACS Symposium Series, 247–59. Washington, DC: American Chemical Society, 2016. http://dx.doi.org/10.1021/bk-2016-1246.ch011.

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

Ebata, Takayuki. "DYNAMICS OF THE VIBRATIONALLY EXCITED MOLECULES AND CLUSTERS STUDIED BY IR-UV AND UV-IR DOUBLE RESONANCE SPECTROSCOPY." In Advances in Multi-Photon Processes and Spectroscopy, 1–29. WORLD SCIENTIFIC, 2010. http://dx.doi.org/10.1142/9789814293594_0001.

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

Bortiatynski, Jacqueline M., and Patrick G. Hatcher. "The Development of 13C Labeling and 13C NMR Spectroscopy Techniques to Study the Interaction of Pollutants with Humic Substances." In Nuclear Magnetic Resonance Spectroscopy in Environment Chemistry. Oxford University Press, 1997. http://dx.doi.org/10.1093/oso/9780195097511.003.0007.

Full text
Abstract:
Modern agricultural practices have contributed to the accumulation of herbicides, pesticides and their decomposition products in the soil. These pollutants are known to interact with soil organic matter to form covalent and/or noncovalent bonding associations. The covalent bonds are thought to result from addition or oxidative coupling reactions, some of which may be catalyzed by oxidoreductive enzymes. Noncovalent associations include such interactions as ion exchange, hydrogen bonding, protonation, charge transfer, ligand exchange, coordination through metal ions, van der Waals forces, and hydrophobic bonding. The association of pollutants with soil organic matter is an area of study that is of extreme interest for two reasons. First, dissolved organic matter present in lakes and streams is known to enhance the solubility of pollutants, which poses a real threat to the quality of fresh water supplies. Therefore, if we are to predict the movement of pollutants in the water table we need to have a mechanistic understanding of their interactions with dissolved humic materials. Second, early studies had indicated that some pollutants chemically bind to humic materials, thus reducing the risk of further transport and dispersion. If this chemical binding of the pollutants is irreversible, then this process may serve as a natural means for their detoxification. Regardless of the type of association, the first task in any mechanistic study is to characterize the reaction products structurally. In the case of noncovalent binding mechanisms, studies have focused on the physical characteristics of the process and not on the structure of the associated pollutant. Association studies are used to determine the sorption kinetics and transport of pollutants as well as their association constants. These types of studies utilize various techniques such as batch sorption, gas-purge desorption, column adsorption, and miscible displacement. All of these techniques are only capable of providing quantitative information on the amount of pollutant sorbed by a substrate. The study of the covalent binding of pollutants to humic substances has utilized 14C labeling in addition to various spectrometric techniques such as ultraviolet (UV) difference, fluorescence polarization and infrared (IR) spectroscopy.
APA, Harvard, Vancouver, ISO, and other styles
5

Dalton, David R. "The Leaf." In The Chemistry of Wine. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190687199.003.0016.

Full text
Abstract:
Grape leaves are thin and flat. As is common among leaves in general, they are composed of different sets of specialized cells. Today, on average, sunlight reaching their surface is about 4% ultraviolet (UV) (<400 nm), 52% infrared (IR) (>750 nm) and 44% visible (VIS) radiation. Little of the UV and IR are used by plants. As with other leaves that are green, only the red and blue ends of the visible part of the electromagnetic spectrum are absorbed, thus leaving green available by reflection and transmission. On the surface of the leaf (Figure 8.1), the cells of the outermost layer (the epidermis) are designed to protect the inner cells where the workings needed for gathering the sunlight used for photosynthesis and other chemistry necessary to the life of the plant are found. That is, the more delicate cells, beneath the epidermis, are involved in production of carbohydrates as well as the movement of nutrients in and products out of the leaf. The epidermis, exposed to the atmosphere, has cells that are usually thicker and are covered by a waxy layer made up of long- chain carboxylic acids that have hydroxyl groups (–OH) at or near their termini. These so-called omega hydroxy acids can then form esters using the hydroxyl group of one and the carboxylic acid of the next. This yields long-chain polyester polymers called “cutin.” As indicated in the earlier discussion of cells and, in particular, regarding the fatty acids of cell walls, the fatty acids found in the epidermis generally consist of an even number of carbon atoms, and for cutin, the sixteen carbon (palmitic acid) family (Figure 8.2) and the eighteen carbon family (oleic acid bearing a double bond or the saturated analogue stearic acid) are common. While one terminal hydroxyl group is usual (e.g., 16-hydroxypalmitic acid, 18-hydroxyoleic acid, or its saturated analogue 18-hydroxystearic acid) more than one (allowing for cross-linking) is not uncommon (e.g., 10,16-dihydroxypalmitic and 9,10,18-trihydroxystearic acid).
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Double resonance ir uv"

1

DeBlase, Andrew, Timothy Zwier, Scott McLuckey, Patrick Walsh, and Christopher Harrilal. "IR-UV DOUBLE RESONANCE SPECTROSCOPY OF A COLD PROTONATED FIBRIL-FORMING PEPTIDE: NNQQNY·H+." In 71st International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2016. http://dx.doi.org/10.15278/isms.2016.wi02.

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

Obenchain, Daniel, Joseph Knee, Stewart Novick, E. Arsenault, Cara Rivera, and Caitlin Bray. "HYDROGEN BONDING IN 4-AMINOPHENYL ETHANOL: A COMBINED IR-UV DOUBLE RESONANCE AND MICROWAVE STUDY." In 70th International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2015. http://dx.doi.org/10.15278/isms.2015.rh13.

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

Harrilal, Christopher, Timothy Zwier, Scott McLuckey, John Lawler, Joshua Fischer, and Andrew DeBlase. "PROBING IR-INDUCED ISOMERIZATION OF A MODEL PENTAPEPTIDE IN A CRYO-COOLED ION TRAP USING IR-UV DOUBLE RESONANCE." In 72nd International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2017. http://dx.doi.org/10.15278/isms.2017.fe05.

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

Mahjoub, A., K. Le Barbu-Debus, A. Zehnacker-Rentien, Mourad Telmini, Najeh Thabet Mliki, and Ezeddine Sediki. "Double resonance IR∕UV study of the complexes of methyl mandelate with methyl glycolate and methyl lactate." In FUNDAMENTAL AND APPLIED SPECTROSCOPY: Second International Spectroscopy Conference, ISC 2007. AIP, 2007. http://dx.doi.org/10.1063/1.2795416.

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

Harrilal, Christopher, Timothy Zwier, Scott McLuckey, and Anthony Pitts-McCoy. "THE ROLE OF TYROSINE IN STABILIZING GAS PHASE ZWITTERIONIC CONFIGURATIONS OF PEPTIDE IONS REVEALED BY IR-UV DOUBLE RESONANCE SPECTROSCOPY." In 74th International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2019. http://dx.doi.org/10.15278/isms.2019.tj09.

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

Ionin, A. A., S. I. Kudryashov, D. V. Mokrousova, L. V. Seleznev, D. V. Sinitsyn, E. S. Sunchugasheva, D. V. Mokrousova, and E. S. Sunchugasheva. "Filamentation of IR and UV double femtosecond laser pulses." In 2014 International Conference Laser Optics. IEEE, 2014. http://dx.doi.org/10.1109/lo.2014.6886339.

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

Yang, Shaoyue, Kevin Lehmann, and George Schwartz. "CH3D NEAR INFRARED CAVITY RING-DOWN SPECTRUM REANALYSIS AND IR-IR DOUBLE RESONANCE." In 70th International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2015. http://dx.doi.org/10.15278/isms.2015.mh12.

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

Jones, O. R. "Density-matrix modelling for three-photon 1+1+1(UV+IR+UV)resonance ionization of iron." In 18th International Conference on Infrared and Millimeter Waves. SPIE, 1993. http://dx.doi.org/10.1117/12.2298502.

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

Vodopyanov, Konstantin L. "Two-dimensional electrons studied by double-resonance mid-IR laser spectroscopy." In Eleventh International Vavilov Conference on Nonlinear Optics, edited by Sergei G. Rautian. SPIE, 1998. http://dx.doi.org/10.1117/12.328298.

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

Bonora, Stefano, and Paolo Villoresi. "Double-sided-actuated deformable mirror for ultrafast optics from UV to mid-IR." In Conference on Lasers and Electro-Optics. Washington, D.C.: OSA, 2009. http://dx.doi.org/10.1364/cleo.2009.cmll4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Double resonance ir uv' for particular source types:
Journal articles
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