ESR EVIDENCE FOR A BIRADICAL DIMER INITIATOR IN DIACETYLENE POLYMERIZATION

被引:34
作者
HORI, Y [1 ]
KISPERT, LD [1 ]
机构
[1] UNIV ALABAMA,DEPT CHEM,TUSCALOOSA,AL 35486
关键词
D O I
10.1021/ja00506a006
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Single-crystal monomers of 5, 7-dodecadiyne-1, 12-diol bis(phenylurethane) X-ray irradiated at 77 K give rise to an ESR spectrum at 77 K consisting primarily of lines due to radical pairs along with some weaker lines due to S = 1/2 radicals. The radical pair is a biradical of a diacetylene dimer with D = 732 G and E = 26.5 G and appears to be the initiator of solid-state polymerization of X-ray irradiated TCDU crystalsat low conversion. © 1979, American Chemical Society. All rights reserved.
引用
收藏
页码:3173 / 3177
页数:5
相关论文
共 28 条
[1]   SOLID-STATE POLYMERIZATION OF DIACETYLENES [J].
BAUGHMAN, RH .
JOURNAL OF APPLIED PHYSICS, 1972, 43 (11) :4362-&
[2]   SOLID-STATE SYNTHESIS OF LARGE POLYMER SINGLE-CRYSTALS [J].
BAUGHMAN, RH .
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1974, 12 (08) :1511-1535
[3]  
BOX HC, 1977, RAD EFFECTS, P118
[4]   ESR OF LOW-TEMPERATURE PHOTOPRODUCTS IN A DIACETYLENE SINGLE-CRYSTAL [J].
BUBECK, C ;
SIXL, H ;
WOLF, HC .
CHEMICAL PHYSICS, 1978, 32 (02) :231-237
[5]   NITROXIDE RADICALS .V. N,N'-DI-T-BUTYL-M-PHENYLENEBINITROXIDE A STABLE TRIPLET [J].
CALDER, A ;
FORRESTE.AR ;
JAMES, PG ;
LUCKHURS.GR .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1969, 91 (14) :3724-&
[6]   EXAMINATION OF THERMAL POLYMERIZATION OF A CRYSTALLINE DIACETYLENE USING DIFFUSE REFLECTANCE SPECTROSCOPY [J].
CHANCE, RR ;
SOWA, JM .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1977, 99 (20) :6703-6708
[8]   ENERGETICS OF THERMAL POLYMERIZATION OF A DIACETYLENE CRYSTAL [J].
CHANCE, RR ;
PATEL, GN ;
TURI, EA ;
KHANNA, YP .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1978, 100 (04) :1307-1309
[9]   ESR OF A DIACETYLENE POLYMER SINGLE-CRYSTAL [J].
EICHELE, H ;
SCHWOERER, M ;
HUBER, R ;
BLOOR, D .
CHEMICAL PHYSICS LETTERS, 1976, 42 (02) :342-346
[10]   POLY(1,2-BIS[4-(PHENYLCARBAMOYLOXY)-NORMAL-BUTYL]-1-BUTEN-3-YNYLENE) [J].
ENKELMANN, V ;
LANDO, JB .
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1978, 34 (JUL) :2352-2353