%0 Journal Article
%A Haiser, K.
%A Koller, F.O.
%A Huber, M.
%A Regner, N.
%A Schrader, T.E.
%A Schreier, W.J.
%A Zinth, W.
%T Nitro-Phenylalanine: A Novel Sensor for Heat Transfer in Peptides
%J The journal of physical chemistry  / A
%V 115
%@ 1089-5639
%C Washington, DC
%I Soc.
%M PreJuSER-20193
%P 2169 - 2175
%D 2011
%Z This work was supported by the Deutsche Forschungsgemeinschaft through the DFG-Cluster of Excellence Munich-Centre for Advanced Photonics and SFB 749 (A5).
%X Femtosecond IR-pump-IR-probe experiments with independently tunable pulses are used to monitor the ultrafast response of selected IR absorption bands to vibrational excitation of other modes of Fmoc-nitrophenylalanine. The absorptions of both NO(2)-bands change rapidly within <2 ps upon excitation of other vibrational modes. The results point to considerable coupling between the monitored NO(2) modes and the initially excited modes or low-frequency modes. The latter are populated by a rapid energy redistribution process. The strong IR absorption of the NO(2) stretching bands and the intense coupling to other modes makes the nitro group of nitrophenylalanine a sensitive monitor for vibrational energy arriving at this amino acid.
%K Energy Transfer
%K Hot Temperature
%K Peptides: chemistry
%K Phenylalanine: analogs & derivatives
%K Spectrophotometry, Infrared: instrumentation
%K Vibration
%K Peptides (NLM Chemicals)
%K 4-nitrophenylalanine (NLM Chemicals)
%K Phenylalanine (NLM Chemicals)
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:21370826
%U <Go to ISI:>//WOS:000288400900011
%R 10.1021/jp110597a
%U https://juser.fz-juelich.de/record/20193