A systematic shift in the electronic spectra of substituted benzene molecules trapped in helium nanodroplets - art. no. 021102

摘要

Electronic spectra (S-1<- S-0) have been recorded from five separate substituted benzene derivatives trapped in helium nanodroplets. Each member of the series is found to exhibit a blueshift with respect to the equivalent transition in the gas phase. Taken together with previous results for benzene, the observed shifts show a remarkably good correlation with changes in electron density that occur within each of the aromatic rings as a result of electronic excitation. (c) 2005 American Institute of Physics.