Study of the relaxation rate of photoexcited indole molecules by the interferometric pump-and-probe method at picosecond resolution
- Authors: Glazov A.L.1, Il’ina A.D.1, Sukharev A.A.1, Vasyutinskii O.S.1
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Affiliations:
- Ioffe Physical Technical Institute
- Issue: Vol 43, No 9 (2017)
- Pages: 846-848
- Section: Article
- URL: https://journals.rcsi.science/1063-7850/article/view/206036
- DOI: https://doi.org/10.1134/S1063785017090176
- ID: 206036
Cite item
Abstract
We present a new interferometric method that can be used for studying the dynamics of photoinduced processes in biologically important molecules at ultrahigh temporal resolution. The method is based upon the detection of changes in the refractive index of a substance excited by pulsed radiation of a femtosecond laser, which are measured by the pump-and-probe technique using time-delayed pulses of the same laser. The high sensitivity and stability of the interferometer allow this method to be used for monitoring variation of the concentration of short-lived excited states of biomolecules in solution. The proposed method has been verified by application to indole solutions in propylene glycol. The upper estimate of the lifetime of photoexcited indole molecules in solution amounted to about 40 ps.
About the authors
A. L. Glazov
Ioffe Physical Technical Institute
Author for correspondence.
Email: glazov.holo@mail.ioffe.ru
Russian Federation, St. Petersburg., 194021
A. D. Il’ina
Ioffe Physical Technical Institute
Email: glazov.holo@mail.ioffe.ru
Russian Federation, St. Petersburg., 194021
A. A. Sukharev
Ioffe Physical Technical Institute
Email: glazov.holo@mail.ioffe.ru
Russian Federation, St. Petersburg., 194021
O. S. Vasyutinskii
Ioffe Physical Technical Institute
Email: glazov.holo@mail.ioffe.ru
Russian Federation, St. Petersburg., 194021