Molecular rotors as fluorescent viscosity sensors: molecular design, polarity sensitivity, dipole moments changes, screening solvents, and deactivation channel of the …

F Zhou, J Shao, Y Yang, J Zhao, H Guo…

Index: Zhou, Fuke; Shao, Jingyin; Yang, Yubin; Zhao, Jianzhang; Guo, Huimin; Li, Xiaolian; Ji, Shaomin; Zhang, Zongying European Journal of Organic Chemistry, 2011 , # 25 p. 4773 - 4787

Full Text: HTML

Citation Number: 35

Abstract

Abstract A library of new fluorescent molecular rotors (FMRs) for viscosity sensing was synthesized. The sensitivity of the fluorescence emission toward solvent viscosity and polarity was investigated by using UV/Vis absorption, fluorescence emission spectra, and theoretical calculations. For the new FMRs, red-shifted emissions at 620 nm, Stokes shifts of 170 nm, and up to 40-fold fluorescence enhancement upon increasing the viscosity of ...