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Title
Thianthren-Polymere fuer den Einsatz in optischen Vorrichtungen, insbesondere Elektrolumineszenzbauelementen
Date Issued
2002
Author(s)
Janietz, S.
Wedel, A.
Friedrich, R.
Patent No
1997-19733882
Abstract
Thianthrene polymer of formula (I) is new:(-A-B-)m (I); A = thianthrenediyl of formula (i); B = group (ii), (iii), (iv), (v) and/or (vi); R = 1-16C alkyl optionally with 1 or 2 CH2 replaced by O or S, phenyl, phenoxy or thiophenol; X = S, O or N; Ar = aryl; and n = 2-500. Also claimed are a mixture of polymers (I), optical devices, especially light-emitting diodes, including the above polymer as the hole-transporting layer and the preparation of the above polymer where B = (ii) by reacting dibromothianthrene of formula (II) and 2,5-dialkylbenzene-1,4-bisboronic acid of formula (III) using a palladium catalyst, where B = (iii) by reacting 2,5-disubstituted terephthalaldehyde of formula (IV) with bisphosphonates of a dimethyl-substituted thianthrene or the bis(triphenylphosphonium salt) of a dimethyl-substituted thianthrene, where B = (iv) by reacting bis(p- carboxyhydrazidophenyl)diphenylsilane with dichlorocarbonylthianthrene, where B = (v) by reacting bis(p-chlorocarbonylphenyl)diphen ylsilane with diaminothianthrene and where B = (vi) by reacting diaminothianthrene with aromatic dianhydrides of formula (IV) and tempering at 200 deg. C. USE - As electroluminescence and/or hole transport layer in optical devices, especially light-emitting diodes (claimed). ADVANTAGE - Good electroluminescence properties.
Language
de
Patenprio
DE 1997-19733882 A: 19970805