Tuning the Sensitivity of Fluorescent Porphyrin Dimers to Viscosity and Temperature.
Aurimas VyšniauskasDong DingMaryam QurashiIgor BoczarowMilan BalazHarry L AndersonMarina K KuimovaPublished in: Chemistry (Weinheim an der Bergstrasse, Germany) (2017)
Conjugated porphyrin dimers have emerged as versatile viscosity-sensitive fluorophores that are suitable for quantitative measurements of microscopic viscosity by ratiometric and fluorescence lifetime-based methods, in a concentration-independent manner. Here, we investigate the effect of extended conjugation in a porphyrin-dimer structure on their ability to sense viscosity and temperature. We show that the sensitivity of the fluorescence lifetime to temperature is a unique property of only a few porphyrin dimers.