A STUDY ON CHEMILUMINESCENCE

化学发光和生物发光通常是多步骤过程 包括几个衬底。 这些过程中最关键的一步是 化学激发，其中富含能量的底物的基态 或中间过渡到产物的激发态。 是 很难解开已知的化学激发机制， 荧光和生物发光反应。 我们建议， 从基态衬底到激发态产物的跨越 通过电荷转移（CT）表面放置，并建议合成一些 的富含能量的苯的4n环二聚体和苯的4n混合环二聚体的 含有适当取代基的苯。 这些化合物，在其 热逆环加成，（1）可能会引入电荷转移相互作用 以影响与受激产物的表面交叉，或者（2）它们可以 经历系统间跃迁至产物的三重态，或（3） 它们可以产生高能量中间体， 发出荧光。 如果我们成功找到一种单分子 荧光逆环加成，我们不仅可以实现一个基本的 了解化学发光和生物发光，而且还将有 一种寻找相干化学发光的方法。

Chemiluminescence and bioluminescence are usually multistep processes involving several substrates. The most crucial step of these processes is the chemoexcitation, in which the ground state of the energy-rich substrate or intermediate crosses over to the excited state of the product. It is difficult to unravel the mechanism of chemoexcitation in known chemiluminescent and bioluminescent reactions. We suggest that the surface crossing from the ground state substrate to the excited state product takes place via charge-transfer (CT) surface, and propose to synthesize a number of energy-rich 4n cyclodimers of benzene and 4n mixed cyclodimers of benzene containing appropriate substituents. These compounds, during their thermal retrocycloaddition, (1) may introduce a charge-transfer interaction to affect the surface crossing to the excited product, or (2) they may undergo an intersystem crossing to the triplet state of the product, or (3) they may generate a high energy intermediate which may sensitize the emission of a fluorescer. If we succeed in finding an unimolecular chemiluminescent retrocycloaddition, not only we may achieve a fundamental understanding of chemiluminescence and bioluminescence, but also will have an approach to search for coherent chemiluminescence.