The spectroscopy of large organic molecules and biomolecules in solution has been investigated using various time-resolved and frequency-resolved techniques. Of particular interest is the early response of the molecule and the solvent, which is difficult to study due to the ambiguity in assigning and differentiating inter- and intra-molecular contributions to the electronic and vibrational populations and coherence. Our measurements compare the yield of fluorescence for two laser dyes IR144 and IR125 as a function of chirp. While negatively chirped pulses are insensitive to solvent viscosity, positively chirped pulses are found to be uniquely sensitive probes of solvent viscosity.
CITATION STYLE
Konar, A., Lozovoy, V. V., & Dantus, M. (2015). Solvent environment revealed by positively chirped pulses. In Springer Proceedings in Physics (Vol. 162, pp. 407–410). Springer Science and Business Media, LLC. https://doi.org/10.1007/978-3-319-13242-6_99
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