Solvent influence on absorption and fluorescence spectra of merocyanine dyes: a theoretical and experimental study

Synthesis, Crystal Structure and Electrical Studies of Naphthoyl-Thiourea as Potential Organic Light Emitting Diode

“…The fluorescence emission spectrum exhibited almost mirrorimage of the corresponding absorption spectra and the remarkable mirror image relationship observed between the spectra should be noted with a small Stokes shift (90 nm) [41]. The absorption spectrum of NT has intense, short wavelength band at 294 nm and the emission spectra showed one maxima wavelength at 370 nm respectively.…”

A Recent Review on Chemiluminescence Reaction, Principle and Application on Pharmaceutical Analysis

“…This is because, the more polar solvent will stabilize the excited state relative to the ground state. Moreover, the fact that photoluminescence originates from an excited state that is in equilibrium with its solvent cage and terminates in a ground state that is not cause the fluorescence to lie at longer wavelengths the more polar or more strongly hydrogen-bonding the solvent [38]. The lowest excited singlet state is formed by promoting a lone-pair electron to a vacant orbital (this is called an , * state).…”

Franck–Condon simulation for unraveling vibronic origin in solvent enhanced absorption and fluorescence spectra of rubrene

“…The nuclear parts represent dynamic motion and its FC factors have been investigated based on various corrections to the leadingterm FC factors. [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36] By introducing damped harmonic oscillator approximation, Zhu and co-authors 36 formulated the empirical correction to each normal mode differently in solvent environment by converting the mass-weighted unperturbed gasphase Hessian matrix to solution-phase perturbed Hessian matrix. This method is based on idea that each normal-mode motion can be affected differently in solution, however each local-mode motion can be affected in quite similar way for highly symmetric molecules like polycyclic aromatic hydrocarbon molecules in which CH-stretch local modes, for example, are considered as in the same solvent environment.…”