| 释义 |
exciplex Chem.|ˈɛksɪplɛks|
[f. excited ppl. a. + complex n.]
A molecule formed by a metastable bond between two atoms or molecules and existing only in an excited state, from which it dissociates into the constituent atoms or molecules. Cf.
1966M. Walker et al. in Jrnl. Chem. Physics 3456/1 The results appear to confirm the existence of 1:2 excited complex states, which we have termed exciplex states, for both solutes. 1972DePuy & Chapman Molec. Reactions & Photochem. iv. 50 It is probable that the reaction involves an exciplex..that collapses to the biradical. 1976K. Davis in R. Foster Molecular Association I. iii. 187 For systems in which no ground-state complex formation is detectable, formation of a complex is possible between an excited donor (or acceptor) and a ground-state acceptor (or donor)... Such a complex has been termed..an ‘exciplex’ or excited state complex and is similar to the complex formed between an excited-state molecule and a ground-state molecule of the same species termed an excimer. 1984Science 23 Nov. 917/1 Electronically excited molecules, being better electron donors and acceptors than their ground states, form charge-transfer complexes (exciplexes) which can lead to radical ions. Ex(iplex emission is widely used to probe polymers and organized media such as membranes and micelles. |