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Low-CTE Polyimides Derived from 2,3,6,7-Naphthalenetetracarboxylic Dianhydride

โœ Scribed by Hasegawa, Masatoshi; Horii, Shunichi


Book ID
111776908
Publisher
Nature Publishing Group
Year
2007
Tongue
English
Weight
234 KB
Volume
39
Category
Article
ISSN
0032-3896

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2,2,ะˆ3,3ะˆ-Biphenyltetracarboxylic dianhydride (2,2,ะˆ3,3ะˆ-BPDA) was prepared by a coupling reaction of dimethyl 3-iodophthalate. The X-ray single-crystal structure determination showed that this dianhydride had a bent and noncopolanar structure, presenting a striking contrast to its isomer, 3,3,ะˆ4,4ะˆ