Synthesis and characterization of poly(2,2′-diphenylbiphenyl-4,4′-ylenevinylene-2″,5″-bis(trimethylsilyl)-para-phenylenevinylene), a new efficient blue-light emitting polymer

Yang, Chih-Chung; Chen, H.-D.; Yang, Kuen-Cheh; Leung, M.‐k.; Wu, Chung Chih; Yang, Chun‐Chieh; Wang, C.C.; Fann, Wunshain

doi:10.1016/s0921-5107(01)00594-3

Cited by 8 publications

(1 citation statement)

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“…Suzuki coupling of dimethyl 2,2‘-diiodobiphenyl-4,4‘-dicarboxylate 10 with 1-naphthaleneboronic acid , gave 11 in high yield . Treatment of 11 with hydrazine and 4-bromobenzoyl chloride, followed by a dehydrative cyclization with POCl 3 led to oxadiazole 12 in a 59% overall yield .…”

mentioning

confidence: 99%

Diphenylamino Group as an Effective Handle to Conjugated Donor−Acceptor Polymers through Electropolymerization

et al. 2003

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mentioning

confidence: 99%

Diphenylamino Group as an Effective Handle to Conjugated Donor−Acceptor Polymers through Electropolymerization

et al. 2003

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Molecular Modeling

Eichinger¹,

Khare²

2002

Encyclopedia of Polymer Science and Technology

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The application of the methods of computational chemistry and physics to polymeric systems within the last two decades has generated an arsenal of techniques that are designed to analyze and predict the properties of this important class of materials. Much effort has been devoted to solving the length and timescale problems that polymers present. Concurrently, accurate force field descriptions of condensed phases, including efforts to treat reacting systems, is enabling significant predictions of properties to be made reliably. Many of these techniques are discussed, as is an array of results that have been obtained by a variety of methods.

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Synthesis and properties of noncoplanar rigid‐rod aromatic polyhydrazides and poly(1,3,4‐oxadiazole)s containing phenyl or naphthyl substituents

Liou

Hsiao

Fang

2006

J. Polym. Sci. A Polym. Chem.

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Two new phenyl‐ and naphthyl‐substituted rigid‐rod aromatic dicarboxylic acid monomers, 2,2′‐diphenylbiphenyl‐4,4′‐dicarboxylic acid (4) and 2,2′‐di(1‐naphthyl)biphenyl‐4,4′‐dicarboxylic acid (5), were synthesized by the Suzuki coupling reaction of 2,2′‐diiodobiphenyl‐4,4′‐dicarboxylic acid dimethyl ester with benzeneboronic acid and naphthaleneboronic acid, respectively, followed by alkaline hydrolysis of the ester groups. Four new polyhydrazides were prepared from the dicarboxylic acids 4 and 5 with terephthalic dihydrazide (TPH) and isophthalic dihydrazide (IPH), respectively, via the Yamazaki phosphorylation reaction. These polyhydrazides were amorphous and readily soluble in many organic solvents. Differential scanning calorimetry (DSC) indicated that these hydrazide polymers had glass transition temperatures in the range of 187–234 °C and could be thermally cyclodehydrated into the corresponding oxadiazole polymers in the range of 300–400 °C. The resulting poly(1,3,4‐oxadiazole)s exhibited Tg's in the range of 252–283 °C, 10% weight‐loss temperature in excess of 470 °C, and char yield at 800 °C in nitrogen higher than 54%. These organo‐soluble polyhydrazides and poly(1,3,4‐oxadiazole)s exhibited UV–Vis absorption maximum at 262–296 and 264–342 nm in NMP solution, and their photoluminescence spectra showed maximum bands around 414–445 and 404–453 nm, respectively, with quantum yield up to 38%. The electron‐transporting properties were examined by electrochemical methods. Cyclic voltammograms of the poly(1,3,4‐oxadiazole) films cast onto an indium‐tin oxide (ITO)‐coated glass substrate exhibited reversible reduction redox with Eonset at −1.37 to −1.57 V versus Ag/AgCl in dry N,N‐dimethylformamide solution. © 2006 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 44: 6466–6483, 2006

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Synthesis and characterization of poly(2,2′-diphenylbiphenyl-4,4′-ylenevinylene-2″,5″-bis(trimethylsilyl)-para-phenylenevinylene), a new efficient blue-light emitting polymer

Cited by 8 publications

References 50 publications

Diphenylamino Group as an Effective Handle to Conjugated Donor−Acceptor Polymers through Electropolymerization

Diphenylamino Group as an Effective Handle to Conjugated Donor−Acceptor Polymers through Electropolymerization

Molecular Modeling

Synthesis and properties of noncoplanar rigid‐rod aromatic polyhydrazides and poly(1,3,4‐oxadiazole)s containing phenyl or naphthyl substituents

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