Relevant bibliographies by topics / Diethynylbenzene

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters

Academic literature on the topic 'Diethynylbenzene'

Author: Grafiati
Published: 4 June 2021
Last updated: 4 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 'Diethynylbenzene.'

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 "Diethynylbenzene"

1

Gao, Man, Chengyuan Shang, Jixian Li, Gang Han, Junkun Tang, Qiaolong Yuan, and Farong Huang. "Synthesis and Characterization of Block Copolymers of Poly(silylene diethynylbenzen) and Poly(silylene dipropargyl aryl ether)." Polymers 13, no. 9 (May 7, 2021): 1511. http://dx.doi.org/10.3390/polym13091511.

Full text
Abstract:
Poly(silylene diethynylbenzene)–b–poly(silylene dipropargyloxy diphenyl propane) copolymer (ABA-A), poly(silylene diethynylbenzene)–b–poly(silylene dipropargyloxy diphenyl ether) copolymer (ABA-O), and a contrast poly(silylene diethynylbenzene) with equivalent polymerization degree were synthesized through Grignard reactions. The structures and properties of the copolymers were investigated via hydrogen nuclear magnetic resonance, Fourier transform infrared spectroscopy, Haake torque rheometer, differential scanning calorimetry, dynamic mechanical analysis, thermogravimetric analysis and mechanical tests. The results show that the block copolymers possess comprehensive properties, especially good processability and good mechanical properties. The processing windows of these copolymers are wider than 58 °C. The flexural strength of the cured ABA-A copolymer reaches as high as 40.2 MPa. The degradation temperatures at 5% weight loss (Td5) of the cured copolymers in nitrogen are all above 560 °C.
APA, Harvard, Vancouver, ISO, and other styles
2

Chimenti, F., A. Bolasco, D. Secci, P. Chimenti, and A. Granese. "Synthesis of New Diethynylbenzene Derivatives." Synthetic Communications 34, no. 14 (January 1, 2004): 2549–55. http://dx.doi.org/10.1081/scc-200025604.

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

Zou, Yan, Hui Min Qi, Mei Ling Xu, Fa Rong Huang, and Lei Du. "Synthesis and Characterization of a Novel Hyperbranched Poly(Diethynylbenzene-Silane)." Advanced Materials Research 560-561 (August 2012): 174–78. http://dx.doi.org/10.4028/www.scientific.net/amr.560-561.174.

Full text
Abstract:
Hyperbranched poly(diethynylbenzene-silane) (hb-PDEBS) was synthesized through polycondensation reaction of diethynylbenzene Grignard reagent (A2) and trichlorosilane (B3), and its structure was characterized by FT-IR, 1H-NMR, GPC and Elemental Analysis. The degree of branching of hb-PDEBS was defined by 29Si-NMR and calculated to be about 0.68. The curing behavior of hb-PDEBS was investigated by DSC. Thermal stability of cured hb-PDEBS was examined by TGA, and its residue at 1000°C under nitrogen was 80.6%. Hb-PDEBS displayed a strong absorption due to π-π* transition and exhibited the most intensity structured emission with a maximum around 500 nm.
APA, Harvard, Vancouver, ISO, and other styles
4

Neti, Venkata S. Pavan K., Jun Wang, Shuguang Deng, and Luis Echegoyen. "High and selective CO2 adsorption by a phthalocyanine nanoporous polymer." Journal of Materials Chemistry A 3, no. 19 (2015): 10284–88. http://dx.doi.org/10.1039/c5ta00587f.

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

Yasin, Akram, Yurong Chen, Yanxia Liu, Letao Zhang, Xingjie Zan, and Yagang Zhang. "Hyperbranched multiple polythioamides made from elemental sulfur for mercury adsorption." Polymer Chemistry 11, no. 4 (2020): 810–19. http://dx.doi.org/10.1039/c9py01544b.

Full text
Abstract:
Different from traditional polyethylenimine (PEI) modified Hg(ii) adsorbent materials, a novel hyperbranched polythioamide adsorbent (SPD) was prepared by using sulfur, PEI and 1,4-diethynylbenzene (DEB) as monomers.
APA, Harvard, Vancouver, ISO, and other styles
6

Figueira, João, João Rodrigues, Luca Russo, and Kari Rissanen. "Three 2,5-dialkoxy-1,4-diethynylbenzene derivatives." Acta Crystallographica Section C Crystal Structure Communications 64, no. 2 (January 12, 2008): o33—o36. http://dx.doi.org/10.1107/s0108270107065523.

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

Ichitani, Motokuni, Koji Yonezawa, Kazuhiro Okada, and Toshiya Sugimoto. "Silyl-Carborane Hybridized Diethynylbenzene–Silylene Polymers." Polymer Journal 31, no. 11_1 (November 1999): 908–12. http://dx.doi.org/10.1295/polymj.31.908.

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

Arenas, J. F., J. I. Marcos, and F. J. Ramirez. "Normal coordinate analysis of 1,4-diethynylbenzene." Spectrochimica Acta Part A: Molecular Spectroscopy 45, no. 8 (January 1989): 781–88. http://dx.doi.org/10.1016/0584-8539(89)80214-4.

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

Plenzig, Felicitas, Alexey Lyubimtsev, and Michael Hanack. "Synthesis of Acetylene Bridged Germanium Phthalocyanines." Natural Product Communications 7, no. 3 (March 2012): 1934578X1200700. http://dx.doi.org/10.1177/1934578x1200700319.

Full text
Abstract:
The octaalkyl- or octaalkoxysubstituted phthalocyaninatogermanium dichlorides 10b,d,e and 10a-c were reacted with bisbromomagnesiumacetylene 16 and bisbromomagnesium- p-diethynylbenzene 18, respectively with formation of the corresponding acetylene bridged oligomers 17a-c and 19a-c, respectively.
APA, Harvard, Vancouver, ISO, and other styles
10

Misin, Vjacheslav, Nikolay Glagolev, and Michael Misin. "Polymers of Phenyldiacetylenes – Functional Thermostable Additions to Industrial Resins." Chemistry and Chemical Technology 4, no. 2 (June 15, 2010): 131–37. http://dx.doi.org/10.23939/chcht04.02.131.

Full text
Abstract:
High thermal and thermooxidation stability of homo and copolymers of diphenyldiacetylene and p-diethynylbenzene was established. The amount of coke residue, obtained from commercial epoxy-resins, is essentially increased upon their modification with added polymers. Additions of polydiethynylbenzene to commercial olygoetheracrylates improved their thermooxidation stability.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Diethynylbenzene"

1

Kuzelka, Jane 1975. "Modeling the active sites of diiron and dicopper metalloproteins with napthyridine-, phthalazine-, and diethynylbenzene-based ligands." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/30016.

Full text
Abstract:
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 2003.
Vita.
Includes bibliographical references.
Chapter 1. Bio-Inspired Reactions of Diiron Centers with Dioxygen A variety of biological systems employ carboxylate-bridged diiron centers to achieve substrate oxidation using dioxygen, and numerous small molecule model compounds have been synthesized in order to mimic this chemistry in the absence of a protein scaffold. In this introductory chapter, a brief overview is presented of ligand systems that have been used to prepare diiron complexes, and the subsequent oxidation chemistry of these systems is outlined. Chapter 2. Carboxylate, Phosphodiester, and Hydroxide-Bridged Diiron(II) Complexes with a Sterically Hindered Phthalazine Ligand The synthesis and crystallographic characterization of a series of diiron(II) complexes with a sterically hindered bridging phthalazine ligand are presented. The compounds [Fe₂(Ph₄bdptz)([mu]-O₂CR)₂]²⁺ (R = CH₃ (3); C₂H₅ (4); CH₂Ph (5); t-C₄H₉ (6)), [Fe₂(Ph₄bdptz)([mu]-O₂P(OPh)₂)₂]²⁺ (7), and [Fe₂(Ph₄bdptz) ([mu]-OH)(MeCN)₂]³⁺ (8) were prepared as small molecule models of the catalytic sites in non-heme carboxylate-bridged diiron enzymes. The phenyl rings of Ph4bdptz form a hydrophobic size-constrained pocket in which additional ligands can be accommodated, and they block the possible formation of tetranuclear species. As the steric bulk of the ancillary ligands is increased, the carboxylates shift from a syn, anti to a syn, syn coordination mode, and the Mossbauer spectra of the diiron(II) compounds clearly reflect the symmetry of the iron coordination environment. The oxidation chemistry of the diiron(II) compounds is presented.
(cont.) Chapter 3. Modeling Features of the Non-Heme Diiron Cores in O0-Activating Enzymes through the Synthesis, Characterization, and Oxidation of 1,8-Naphthyridine-Based Complexes Multidentate naphthyridine-based ligands were used to prepare a series of diiron(II) complexes. The compounds [Fe₂(BPMAN)([mu]-O₂CPh)₂](OTf)₂ (1), [Fe₂(BPMAN)([mu]-OR) ([mu]-0₂CAr[superscript]Tol)] (OTf)2 (R = H (2); CH₃ (3)), [Fe₂(BBAN)([mu]-0₂CAr[superscript]Tol)₃]-(OTf) (4), and [Fe₂(BEAN) ([mu]-O₂CAr[superscript]Tol)₃](OTf) (5) were prepared as models of the active sites of non-heme diiron enzymes. The rigorously enforced dinuclear core allows the reactivity of the diiron unit to be evaluated. Upon oxidation of these compounds, there is evidence for the formation of a ([mu]-oxo)diiron(III) unit, a mixed-valent ([mu]-oxo)Fe(II)Fe(III) species, and oxidative N-dealkylation. The electrochemical properties of the compounds were correlated with the observed dioxygen reactivity, and Mossbauer spectroscopic properties of the diiron(II) complexes were also investigated. Chapter 4. Modeling the Syn Disposition of Nitrogen Donors at the Active Sites of Carboxylate-Bridged Diiron Enzymes. Enforcing Dinuclearity and Kinetic Stability with a 1,2-Diethynylbenzene-Based Ligand The syn coordination of histidine residues at the active sites of several carboxylate-rich non-heme diiron enzymes has not been effectively reproduced with small molecule model compounds. In this study, ligands derived from 1,8- naphthyridine, phthalazine, and 1,2-diethynylbenzene were employed to mimic this geometric feature ...
by Jane Kuzelka.
Ph.D.
APA, Harvard, Vancouver, ISO, and other styles
2

Slováková, Eva. "Polymerizace bifunkčních acetylenů katalyzovaná komplexy rhodia." Master's thesis, 2011. http://www.nusl.cz/ntk/nusl-297634.

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

Dzeng, Yi-Chung, and 曾益中. "Unusual Substituent-Dependent Photophysical Properties of Alternating Substituted Methylene-Diethynylbenzene Copolymers: a Comparison of Methylene versus Silylene Tethers on Polymer Folding." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/62693315107904455249.

Full text
Abstract:
碩士
國立臺灣大學
化學研究所
103
Alternating tert-butyl- and methyl- substituted alkoxymethylene-diethynylbenzene copolymers 11 with different degree of polymerization and the corresponding dimers 15 were synthesized. The tert-butyl substituted polymers 11b show strong emissions around 350-400 due to ground state interactions between adjacent chromophores while copolymer 11a with less bulkily methyl-substituted tether exhibits emission around 400-450 nm due to through-space interactions between nonadjacent diethynylbenzene chromophores. Such substituent effect on photophysical properties was attributed to the Thorpe-Ingold effect exerted by the bulky tert-butyl group, compressing the bond angle at the methylene tether and therefore altering the overall folding behavior of the polymer chain. As the polymer chains fold in different manner, difference in intrachain chromophore-chromophore interaction modes were expected and corresponding photophysical property differences were observed. These methylene tethered polymers have photophysical properties similar to those of the related silylene-tethered copolymers 1, albeit the relative intensity in the blue light emission is significantly smaller in methylene-bridged copolymers than in silylene-linked copolymers. Comparison between these two series of polymers suggests that folding behaviors of such polymers may depend on the tetrahedral tethers (methylene versus silylene).
APA, Harvard, Vancouver, ISO, and other styles
4

Wei, Yunjar, and 魏韻倢. "Studies on Electronic Interaction in Molecular Wire Consisting of Pyridine-2,6-Dicarboxylic-1,4-Diethynylbenzene Unit Bridging Two Ruthenium-Terpyridine Metal Centers." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/48457814267300464910.

Full text
Abstract:
碩士
靜宜大學
應用化學系
101
We report herein the synthesis and characterization of the ruthenium dinuclear complexes with end-caping of pyridinedicarboxylate of terpyridine(2,2’:6’,2”-terpyridine) bridging with carbon-rich alkynyl and phenyl groups. These novel complexes are characterized by NMR, FT-IR, UV-vis and CV. Furthermore, the electrochemical behavior of the ruthenium complexes was show to be weakly dependent on the form of the systems with one irreversible and one eversible electrochemical redox waves in positive wave were observed (E1/2= 1.40 and 0.45 (irrev) for the complex with ethynyl-phenyl spacer and E1/2 1.57 and 0.38 (irrev) for the complex with ethynyl-2-nitrophenyl spacer), indicating a strong electronic interaction between two Ru metal centers.
APA, Harvard, Vancouver, ISO, and other styles
5

Petrášová, Sabina. "Charakterizace poly(1,4-diethynylbenzen)u metodou IGC." Master's thesis, 2011. http://www.nusl.cz/ntk/nusl-297162.

Full text
Abstract:
Poly(1,4-diethynylbenzene) ( -conjugated polymer) was prepared as an insoluble polymer network via chain coordination polymerization of 1,4-diethynylbezene catalyzed with [Rh(NBD)acac] complex. Thermodynamic properties and acid-base characteristics of the prepared poly(1,4-diethynylbenzene) were studied by means of Inverse Gas Chromatography (IGC) in the temperature range 80-100 řC. Retention data of selected testing substances were used to determine the Gibbs energy of sorption, the sorption enthalpy and their acid-base and disperse parts as well as the disperse contribution to the surface energy and parameters of KA, KD, ANHPS and DNHPS quantifying the acid-base character of the studied polymer. The results showed that poly(1,4-diethynylbenzene) interacted more efficiently with Lewis bases than with Lewis acids. The values of experimental sorption enthalpy were used for the determination of the parameters KA and KD. Values of these parameters classify poly(1,4-diethynylbenzene) as the material with a slightly acid character. This conclusion is further supported by the results of H. P. Schreiber method based on the application of ANHPS and DNHPS parameters for the evaluation of the acid-base properties of the material. The infrared spectroscopy proved that poly(1,4-diethynylbenzene) contained...
APA, Harvard, Vancouver, ISO, and other styles
6

Stahlová, Sabina. "Funkcionalizované mikroporézní polymerní sítě připravené z ethynylarenů." Doctoral thesis, 2016. http://www.nusl.cz/ntk/nusl-353418.

Full text
Abstract:
The preparation of a new group of functionalized conjugated polymer networks has been described based on spontaneous quaternization polymerization of ethynylpyridines with bis(bromomethyl)arenes. The networks consisted of polyacetylene chains with pyridyl and pyridiniumyl pendants cross-linked with -CH2(arylene)CH2- links. The variation of the ratio of monomer and quaternization agent in the feed modified the ratio of pyridyl and pyridiniumyl groups in the networks (pyridyl/pyridiniumyl ratios from 0 to 1.32). The networks did not exhibit a permanent microporosity that could be confirmed by nitrogen adsorption at 77 K. Nevertheless, all networks were active in capture of CO2 at 293 K (up to 0.73 mmol CO2/g, 750 Torr). It has been hypothesized that CO2 capture reflected formation of a temporary porous texture of the networks through conformational changes of the network segments enabled by the segments mobility at room temperature. The preparation of functionalized conjugated polymer networks with permanent micro/mesoporosity (SBET up to 667 m2 /g) has been described that was based on chain coordination copolymerization of acetylenic monomers. The copolymerization of 1,4-diethynylbenzene or 4,4'-diethynylbiphenyl with mono or diethynylbenzenes bearing NO2 or CH2OH groups has been demonstrated as...
APA, Harvard, Vancouver, ISO, and other styles
7

Slováková, Eva. "Konjugované porézní polymery odvozené od diethynylarenů řetězovou polymerizací a polycyklotrimerizací." Doctoral thesis, 2015. http://www.nusl.cz/ntk/nusl-350048.

Full text
Abstract:
4 ABSTRACT The synthesis has been described yielding a new type of rigid conjugated polymer networks which possess a high content of permanent micropores and macropores and exhibit high surface areas up to 1469 m2/g. The networks have been prepared via chain-growth coordination polymerization catalysed with insertion catalysts based on Rh complexes. This polymerization has been newly applied to bifunctional acetylenic monomers of diethynylarene type (1,4-diethynylbenzene, 1,3-diethynylbenzene and 4,4'-diethynylbiphenyl). The covalent structure of the networks consists of the polyacetylene main chains densely connected by arylene struts. The W and Mo metathesis catalysts have been revealed as inefficient for the synthesis of these networks. The increase in the polymerization temperature and time has been shown to affect positively the content and the diameter (up to 22 nm) of the mesopores in the networks. A mechanism has been proposed that explains the mesopores formation as a result of mutual knitting of small particles of the microporous polymer. The application of emulsion polymerization technique allowed to prepare texturally hierarchical polyacetylene networks possessing interconnected open macropores (diameter up to 4,8 μm) the walls of which exhibited micro/mesoporous texture. It was demonstrated...
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Diethynylbenzene"

1

Pardasani, R. T., and P. Pardasani. "Magnetic properties of cyclopentadienyl iron(III) complex which is bridged through 1,3-diethynylbenzene spacer." In Magnetic Properties of Paramagnetic Compounds, 497–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54231-6_272.

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

Camp, J. E. "Potassium Hydroxide Catalyzed Addition of Metal Complexed Phosphines to 1,2-Diethynylbenzene." In Six-Membered Hetarenes with Two Unlike or More than Two Heteroatoms and Fully Unsaturated Larger-Ring Heterocycles, 1. Georg Thieme Verlag KG, 2012. http://dx.doi.org/10.1055/sos-sd-117-00149.

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

Meigh, J. P. K. "Potassium Hydroxide/18-Crown-6 Catalyzed Addition of Phenylphosphine to 1,2-Diethynylbenzene." In Six-Membered Hetarenes with Two Unlike or More than Two Heteroatoms and Fully Unsaturated Larger-Ring Heterocycles, 1. Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-017-01461.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Diethynylbenzene' 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