S.L. Raut, et al., “A triazine-based BODIPY trimer as a molecular viscometer,” Phys. Chem. Chem. Phys., 2016, 18, 4535-4540
(Sangram L. Raut, Joseph D. Kimball, Rafal Fudala, Ilkay Bora, Rahul Chib, Hana Jaafari, Marlius K. Castillo, Nicholas W. Smith, Ignacy Gryczynski, Sergei V. Dzyuba, Zygmunt Gryczynski)

Abstract:
Photophysical behaviour of a novel trimeric BODIPY rotor with a high extinction coefficient is reported. Steady state and time resolved fluorescence measurements established that the trimer could be used as a viscometer for molecular solvents, membrane-like environments and several cancer cell lines.