TY - JOUR
T1 - Comparing photochemistry of n- and tert-butylamine all-trans retinal protonated Schiff-base
T2 - Effects of C{double bond, long}N configurational inhomogeneity
AU - Zhu, Jingyi
AU - Bismuth, Oshrat
AU - Gdor, Itay
AU - Wand, Amir
AU - Friedman, Noga
AU - Sheves, Mordechai
AU - Ruhman, Sanford
PY - 2009/9/17
Y1 - 2009/9/17
N2 - Photochemistry of all-trans tert-butylamine retinal protonated Schiff-base (TB-RPSB) is investigated by femtosecond pump-hyperspectral probe spectroscopy. Unlike the n-butyl analogue (NB-RPSB) no shifting of the transient spectral bands is observed upon tuning the excitation pulses from 395 to 475 nm. The 15 nm shift observed for NB-RPSB in similar experiments was assigned to unspecified ground state structural inhomogeneity. Present results indicate that is most likely due to the coexistence of C15{double bond, long}N double bond isomers in NB-RPSB. Elimination of this inhomogeneity in TB-RPSB makes it a more appropriate model for appreciating protein effects on RPSB photochemistry in retinal proteins.
AB - Photochemistry of all-trans tert-butylamine retinal protonated Schiff-base (TB-RPSB) is investigated by femtosecond pump-hyperspectral probe spectroscopy. Unlike the n-butyl analogue (NB-RPSB) no shifting of the transient spectral bands is observed upon tuning the excitation pulses from 395 to 475 nm. The 15 nm shift observed for NB-RPSB in similar experiments was assigned to unspecified ground state structural inhomogeneity. Present results indicate that is most likely due to the coexistence of C15{double bond, long}N double bond isomers in NB-RPSB. Elimination of this inhomogeneity in TB-RPSB makes it a more appropriate model for appreciating protein effects on RPSB photochemistry in retinal proteins.
UR - http://www.scopus.com/inward/record.url?scp=69949108608&partnerID=8YFLogxK
U2 - 10.1016/j.cplett.2009.08.040
DO - 10.1016/j.cplett.2009.08.040
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:69949108608
SN - 0009-2614
VL - 479
SP - 229
EP - 233
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 4-6
ER -