The rates of thermal conversion of seven simple dewarbenzene derivatives to their corresponding benzene isomers were measured. Relatively minor substituent changes were found to have profound effects; isomerization rates increased with the number and strength of electron-withdrawing moieties. Surprisingly, the rate of thermalisomerization for one derivative was the same in fluid solution as in a solid
Quantum Amplified Isomerization: A New Concept for Polymeric Optical Materials
作者:J. G. Gillmore、J. D. Neiser、K. A. McManus、Y. Roh、G. W. Dombrowski、T. G. Brown、J. P. Dinnocenzo、S. Farid、D. R. Robello
DOI:10.1021/ma050348k
日期:2005.9.1
quantum amplified isomerization (QAI). The QAI process utilizes photoinitiated, cation radical isomerization chemistry in a polymeric medium. Two classes of materials are described: one where the QAI reactant is molecularly doped in the polymer matrix and another where the reactant is part of a functionalized polymer. Quantum yield experiments demonstrate that the isomerizationreaction can proceed by