Zobrazeno 1 - 10 of 558 pro vyhledávání: '"H Wynberg"'
1
The conversion of endoxides to aromatic compounds with triphenylphosphonium dibromide
Autor: J Dewit, H Wynberg
Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 92:281-286
Triphenylphosphonium dibromide converts endoxides into aromatic compounds in good yields. Endoxides having a configuration in which the oxygen atom is shielded from attack by agents normally used for this conversion react under mild conditions. A pos
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5368fd1cd5f2abefde70ce649cdb7015
https://doi.org/10.1002/recl.19730920308
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3
Alternate donor-acceptor small-band-gap semiconducting polymers; Polysquaraines and polycroconaines
Autor: H. Wynberg, Edsko Enno Havinga, W. Ten Hoeve
Publikováno v: Synthetic Metals. 55:299-306
The idea that conjugated polymers with alternate donor and acceptor moieties in the main chain are characterized by a small band gap is proposed and explained. Experimental verification of this idea is reported in new classes of conjugated polymer se
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::92f97e70b8647848161934ad6100f82b
https://doi.org/10.1016/0379-6779(93)90949-w
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8
A new class of small band gap organic polymer conductors
Autor: Edsko Enno Havinga, W. ten Hoeve, H. Wynberg
Publikováno v: Polymer Bulletin. 29:119-126
Polysquaraines and polycroconaines have been synthesized. They form a new class of polymers with a small band gap, down to 0.5 eV. The small gap arises from the regular alternation of strong donor and acceptor-like moieties in a conjugated backbone.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6b9ea1febbcbab60c88556d22ed56bd8
https://doi.org/10.1007/bf00558045
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9
Saturation of the hyperpolarizability of oligothiophenes
Autor: Geert L. J. A. Rikken, Hugo Thienpont, Wolter ten Hoeve, E. W. Meijer, H. Wynberg
Publikováno v: Physical Review Letters, 65(17), 2141-2144. American Physical Society
Physical Review Letters, 65(17), 2141-2144. AMER PHYSICAL SOC
We report the observation of saturation with chain length of the second hyperpolarizability of a series of long, well-defined, conjugated oligothiophenes. This saturation occurs at the same length as that of the band gap and of the polarizability, an
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc25c6c31b2b303842eaa8c3e444b651
https://doi.org/10.1103/physrevlett.65.2141
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10
Substituted 2,2':5',2':5',2'':5'',2'':5'',2''': 5''',2''':5''',2'''':5'''',2'''':5'''',2''''':5''''',2'''''-undecithiophenes, the longest characterized oligothiophenes
Autor: W. Ten Hoeve, E. W. Meijer, H. Wynberg, Edsko Enno Havinga
Publikováno v: Journal of the American Chemical Society, 113(15), 5887-5889. American Chemical Society
The title compds. I (n = 3, 11) were prepd. utilizing the Stetter reaction followed by ring closure with Lawesson's reagent. Optical studies and cond. data of doped I together with a series of differently sized oligothiophenes show that at the chain
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2745057ff8b452c5d3df9a837b43ba2b
https://research.tue.nl/en/publications/68f1f0b2-056a-489c-abff-d81384881c8f
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