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Jianfang Cao, Chong Hu, Fei Liu, Wen Sun, Dr. Jiangli Fan, Dr. Fengling Song, Dr. Shiguo Sun and Prof. Dr. Xiaojun Peng Mechanism and Nature of the Different Viscosity Sensitivities of Hemicyanine Dyes with Various Heterocycles ChemPhysChem 14

Version of Record online: 9 APR 2013 | DOI: 10.1002/cphc.201300049

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Through thick and thin: Two excited-state deactivation pathways exist for carbazole-based hemicyanine molecular rotors: nonradiative by twisted intramolecular charge transfer (TICT) in nonviscous media and fluorescent emission (fluo) in viscous media due to suppression of intramolecular rotation (see picture). They thus have applications as viscosity-sensitive fluorescent probes.

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