Energy migration and transfer rates are invariant to modeling the fluorescence relaxation by discrete and continuous distributions of lifetimes

Article Abstract:

An attempt made to analyze whether calculated transfer/migration rates depend on modeling the photophysics' decay by discrete or continuous distributions of lifetimes is presented. The rates of electronic energy migration/transfer and distances determined within pairs of interacting chromophores reveal small or negligible influence on using discrete or continuous distributions of lifetimes.

Energy transfer, Chromophores

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Subpicosecond Fluorescence spectra of tryptophan in water

Article Abstract:

A femtosecond ultraviolet fluorescence spectrophotofluorometer is exploited for the study of tryptophan and analogues. They reveal an initial spectrum shifted 4900 cm (super -1) from the putative 0--0 band at 295 nm, along with a picosecond relaxation to a spectrum 412 cm (super -1) lower and 322 cm (super -1) wider.

Electric properties, Optical properties, Tryptophan

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Directional fluorescence spectra of laser dye in opal and inverse opal photonic crystals

Article Abstract:

The fluorescence from R6G dye molecules embedded in fcc photonic crystals with a large range of lattice parameters is investigated. Photonic crystals with second-order bragg diffraction is explored using emission from internal light sources.

Photonics

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