期刊
POLYMER
卷 44, 期 16, 页码 4487-4490出版社
ELSEVIER SCI LTD
DOI: 10.1016/S0032-3861(03)00442-7
关键词
poly(pyrazine-2,5-diyl) poly(p-phenylene) type polymer; coplanar structure
Poly(pyrazine-2,5-diyl), PPyrz, was prepared by organometallic dehalogenative polycondensation of 2,5-dibromopyrazine. PPyrz was soluble in conc. H2SO4 and showed an eta/c value of 0.45 dl g(-1). PPyrz exhibited the UV-vis peak at the longest wavelength (lambda(max) = 439 nm) among the poly(p-phenylene) type polymers. The polymer afforded a simple CP-MAS solid C-13 NMR pattern with peaks at delta 143.3 and 148.5. Microwave-assisted synthesis was effective. (C) 2003 Elsevier Science Ltd. All rights reserved.
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