The Chemiluminescent Cycloreversion of an Anthracene-Benzene Biplanemer System both in the Solid State and in the Liquid State
作者:Masaru Kimura、Hideki Okamoto、Setsuo Kashino
DOI:10.1246/bcsj.67.2203
日期:1994.8
In the thermal [4+4]cycloreversions of 9-anthracenecarboxylic acid-benzene 3a, methyl 9-anthracenecarboxylate-benzene 3b, dimethyl (or diethyl) 9,10-anthracenedicarboxylate-benzene 3c (or 3d) and anthracene-1,4-difluoro(or dichloro)benzene 3f (or 3g) biplanemers, chemiluminescene was observed for 3a—d only in the solid state at > 120 °C but not in a liquid phase, while 3f and 3g were not chemiluminescent. Efficient chemiluminescence was observed in the photocycloreversion of all biplanemers tested in both phases. The thermodynamic parameters for the thermal cycloreversion of these biplanemers were collected. Higher activation energies were obtained in the solid state than in the liquid phase. The higher energies favor touch of the S0 surface with the S1 surface at the transition state for effecting the chemiluminescent cycloreversion.
在9-蒽甲酸-苯3a、甲基9-蒽甲酸酯-苯3b、二甲基(或二乙基)9,10-蒽二甲酸酯-苯3c(或3d)和蒽-1,4-二氟(或二氯)苯3f(或3g)的热[4+4]环逆反应中,仅在固态下> 120°C时观察到3a—d的化学发光,而在液相中则没有;而3f和3g则没有化学发光。所有在两种相中测试的双平面聚合物的光环逆反应中观察到了高效的化学发光。这些双平面聚合物的热环逆反应的热力学参数被收集。固态中的活化能高于液相。这种较高的能量有利于在过渡状态下S0表面与S1表面的接触,从而促进化学发光的环逆反应。