Simple models for excited-state dynamics of conjugated molecules

John H. Frederick; Valentin D. Vachev; J. E. Hadder

doi:10.1117/12.197471

2 January 1995 Simple models for excited-state dynamics of conjugated molecules

John H. Frederick, Valentin D. Vachev, J. E. Hadder

Proceedings Volume 2370, 5th International Conference on Laser Applications in Life Sciences; (1995) https://doi.org/10.1117/12.197471
Event: Laser Applications in Life Sciences: 5th International Conference, 1994, Minsk, Belarus

Abstract

The photochemistry of large molecules with conjugated (pi) -systems plays an important role in many systems of biological interest, including vision and photosynthesis. The size of these systems, however, often precludes a detailed knowledge of the electronic states and associated potential energy surfaces on which the photochemical dynamics takes place. We present some recent progress in the construction of empirical excited state potential surfaces of conjugated molecules based on an analysis of spectroscopic, ab initio, and ultrafast lifetime measurement data. These surfaces are then used to investigate the excited state dynamics of both reduced- and full-dimensionality molecular models, including nonadiabatic processes. Applications to the photoisomerizaton reactions of the model system stilbene are featured.

Citation Download Citation

John H. Frederick, Valentin D. Vachev, and J. E. Hadder "Simple models for excited-state dynamics of conjugated molecules", Proc. SPIE 2370, 5th International Conference on Laser Applications in Life Sciences, (2 January 1995); https://doi.org/10.1117/12.197471

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