TY - JOUR
T1 - Synthesis of blue emitting alicyclic polyimides using one-pot alternating copolymerization method
AU - Kudo, Kazuaki
AU - Imai, Takahiro
AU - Hamada, Takashi
AU - Sakamoto, Seiji
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2006/10
Y1 - 2006/10
N2 - A series of alternating copolyimides (altPIs) having highly blue fluorescing 9,10-diphenyl-anthracene units were synthesized and the photoluminescence of the altPIs were investigated. The alt-PIs were prepared by sequential addition of two diamines to a solution of spiroalicyclic tetracarboxylic dianhydride, rel[1R,5S,6R]-3-oxabicyclo[3.2.1]octane-2,4-dione-6-spiro-3 - (tetrahydrofuran-2-,5 - dione) (DAn), on the basis of the unique regioselective ring opening reactivity of DAn to the aromatic amines. The alternating structure of the polyimides was confirmed by comparison of its 1H NMR with that of the corresponding random counterparts. The altPIs showed glass transition temperature higher than 240°C. A 5% weight loss temperature was in a range of 335 to 376°C. The polyimides showed blue fluorescence (max = 435 to 436 nm) in DMSO solution with a fluorescence quantum yield of 0.64 to 0.77. In the film state, although small red shift was observed compared to the solution state, the altPIs gave blue emission (max = 437 to 447 nm).
AB - A series of alternating copolyimides (altPIs) having highly blue fluorescing 9,10-diphenyl-anthracene units were synthesized and the photoluminescence of the altPIs were investigated. The alt-PIs were prepared by sequential addition of two diamines to a solution of spiroalicyclic tetracarboxylic dianhydride, rel[1R,5S,6R]-3-oxabicyclo[3.2.1]octane-2,4-dione-6-spiro-3 - (tetrahydrofuran-2-,5 - dione) (DAn), on the basis of the unique regioselective ring opening reactivity of DAn to the aromatic amines. The alternating structure of the polyimides was confirmed by comparison of its 1H NMR with that of the corresponding random counterparts. The altPIs showed glass transition temperature higher than 240°C. A 5% weight loss temperature was in a range of 335 to 376°C. The polyimides showed blue fluorescence (max = 435 to 436 nm) in DMSO solution with a fluorescence quantum yield of 0.64 to 0.77. In the film state, although small red shift was observed compared to the solution state, the altPIs gave blue emission (max = 437 to 447 nm).
KW - Alicyclic polyimide
KW - Alternating polymer
KW - Blue emission
KW - Diphenylanthracene
KW - Fluorescent polymer
UR - http://www.scopus.com/inward/record.url?scp=33748969382&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33748969382&partnerID=8YFLogxK
U2 - 10.1177/0954008306068252
DO - 10.1177/0954008306068252
M3 - Article
AN - SCOPUS:33748969382
VL - 18
SP - 749
EP - 759
JO - High Performance Polymers
JF - High Performance Polymers
SN - 0954-0083
IS - 5
ER -