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Monitoring excited-state relaxation in a molecular marker in live cells-a case study on astaxanthin
Tingxiang Yang1, Avinash Chettri1, Basseem Radwan2
1Leibniz Institute of Photonic Technology (Leibniz-IPHT), Albert-Einstein-Strabe 9, Jena 07745, Germany. benjamin.dietzek@leibniz-ipht.de and Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, Jena 07743, Germany.
Abstract:
Small molecules are frequently used as dyes, labels and markers to visualize and probe biophysical processes within cells. However, very little is generally known about the light-driven excited-state reactivity of such systems when placed in cells. Here an experimental approach to study ps time-resolved excited state dynamics of a benchmark molecular marker, astaxanthin, in live human cells is introduced.

