The coherent dynamics of photoexcited green fluorescent proteins

Details The coherent dynamics of photoexcited green fluorescent proteins The coherent dynamics of photoexcited green fluorescent proteins

2001-02-20

arxiv.org/abs/physics/0102059v1

Physics

Biological Physics

accepted for publication in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.86.3439

The coherent dynamics of vibronic wave packets in the green fluorescent protein is reported. At room temperature the non-stationary dynamics following impulsive photoexcitation displays an oscillating optical transmissivity pattern with components at 67 fs (497 cm-1) and 59 fs (593 cm-1). Our results are complemented by ab initio calculations of the vibrational spectrum of the chromophore. This analysis shows the interplay between the dynamics of the aminoacidic structure and the electronic excitation in the primary optical events of green fluorescent proteins.

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