Femtosecond time-resolved spectroscopic studies with phytochrome in its red light absorbing form (Pr) were performed. Upon excitation of Pr with 75 fs pulses at 618 nm bleaching of the Pr ground state absorption accompanied by a broad transient absorption centered near 725 nm was observed. The stimu
Excited-state reaction dynamics of bacteriorhodopsin studied by femtosecond spectroscopy
β Scribed by J. Dobler; W. Zinth; W. Kaiser; D. Oesterhelt
- Book ID
- 107733247
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 503 KB
- Volume
- 144
- Category
- Article
- ISSN
- 0009-2614
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π SIMILAR VOLUMES
The spin-boson model was applied to analyze the temperature dependence of excited state dynamics for the cis-trans photoisomerization of the chromophore in bacteriorhodopsin which was obtained by the Fourier transform of the optical absorption spectrum. The results indicate that the model is valid i
The femtosecond photoisomerization of bacteriorhodopsin (bR), pumped at either 550 nm or 405 nm, was probed between 640 nm and 950 nm. The 550 nm pump spectra exhibit net gain signals peaking at > 950 nm. A transient absorption is proposed to partially cancel tbe emission. The 405 nm pump transients