Hi yall,
We are currently working on rhodamine involved research project. Does anyone know how rhodamine molecules give EPR signals? I mean the mechanism behind the unpaired electron formation of rhodamine dyes.
Really appreciate your reply.
Dear Ranganath Wijesinghe ,
Did you have a look at this paper?
van de Linde, S., Krstić, I., Prisner, T., Doose, S., Heilemann, M., & Sauer, M. (2011). Photoinduced formation of reversible dye radicals and their impact on super-resolution imaging. Photochemical & Photobiological Sciences, 10(4), 499-506. (see enclosed file)
I think it explains it pretty well.
Best regards.
PS. Not sure if this is what you are looking for but perhaps the following paper gives a bit more details about the radicals:
Navaratnam, S., & Parsons, B. J. (2002). Kinetic and spectral properties of rhodamine 6G free radicals: a pulse radiolysis study. Journal of Photochemistry and Photobiology A: Chemistry, 153(1-3), 153-162. (see enclosed file)
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