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.
Bibliographical noteFunding Information:
A.V. thanks the EPSRC for the Prize Studentship and for the Doctoral Prize Fellowship. M.K.K. is thankful to the EPSRC for the Career Acceleration Fellowship (EP/I003983/1).
All Science Journal Classification (ASJC) codes
- Organic Chemistry