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Title: Functionalized polyfluorenes for use in optoelectronic devices

Patent ·
OSTI ID:1033606

The present invention relates to process comprising reacting a polyfluorenes comprising at least one structural group of formula I ##STR00001## with an iridium (III) compound of formula II ##STR00002## wherein R.sup.1 and R.sup.2 are independently alkyl, substituted alkyl, aryl, substituted aryl or a combination thereof; R.sup.5is H or CHO; R.sup.3 and R.sup.4 are independently hydrogen, alkyl, substituted alkyl, aryl, substituted aryl or a combination thereof; R.sup.11 and R.sup.12 taken together form a substituted or unsubstituted monocyclic or bicyclic heteroaromatic ring; R.sup.13 is independently at each occurrence halo, nitro, hydroxy, amino, alkyl, aryl, arylalkyl, alkoxy, substituted alkoxy, substituted alkyl, substituted aryl, or substituted arylalkyl; Ar is aryl, heteroaryl, substituted aryl, substituted heteroaryl, or a combination thereof; X is selected from a direct bond, alky, substituted alkyl, and combinations thereof; Y is CHO or NH.sub.2; Z is CHO or NH.sub.2 where Z does not equal Y; and p is 0, 1 or 2. The invention also relates to the polyfluorenes, which are products of the reaction, and the use of the polyfluorenes in optoelectronic devices.

Research Organization:
GE Global Research, Niskayuna, New York (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-05NT42343
Assignee:
General Electric Company (Niskayuna, NY)
Patent Number(s):
8,053,536
Application Number:
12/328,805
OSTI ID:
1033606
Country of Publication:
United States
Language:
English

References (3)

Hole Transport Triphenylamine−Azomethine Conjugated System: Synthesis and Optical, Photoluminescence, and Electrochemical Properties journal September 2008
Comparative study of the bimolecular electron transfer of fullerenes (C60/C70) and 9,9-disubstituted fluorenes by laser flash photolysis journal January 2007
Improved properties of polyfluorenevinylenes by introduction of carbazole units journal January 2008