Femtosecond fluorescence upconversion studies of barrierless bond twisting of auramine in solution
نویسندگان
چکیده
منابع مشابه
Femtosecond resolved fluorescence studies of molecular processes and ultrafast photochemistry in solution
The evolution of electronically excited states in aromatic compounds can be studied by resolving the spontaneous molecular emission through sum-frequency mixing techniques with femtosecond time resolution. In this communication, a brief review of the experimental technique is presented, together with two examples of its use to investigate photochemical and photophysical pathways in organic comp...
متن کاملSinglet excited state dynamics of uracil and thymine derivatives: A femtosecond fluorescence upconversion study in acetonitrile
The excited state properties of uracil, thymine and four analogous uracil compounds have been studied in acetonitrile by steady-state and time-resolved spectroscopy. The excited state lifetimes were measured using femtosecond UV fluorescence upconversion. The excited state lifetimes of uracil and its 1and 3-methyl substituted derivatives are well described by one ultrafast (6100 fs) component. ...
متن کاملpostnatal studies of bats (pipistrellus kuhlii and miniopterus schreibersii) & histomorphology and histochemistry studies of organs and diseases of (neurergus microspilotus and n. kaiseri)
1. to determine whether difference in birth body mass influenced growth performance in pipistrellus kuhlii we studied a total of 12 captive-born neonates. bats were assigned to two body mass groups: light birth body mass (lbw: 0.89 ± 0.05, n=8) and heavy birth body mass (hbw: 1.35 ± 0.08, n=4). heavier body mass at birth was associated with rapid postnatal growth (body mass and forearm length) ...
Unravelling molecular mechanisms in the fluorescence spectra of doxorubicin in aqueous solution by femtosecond fluorescence spectroscopy.
Doxorubicin (DOX) is a potent anti-tumoral agent widely used for cancer therapy. Despite numerous studies, the fluorescence properties of DOX, usually exploited for the characterization of the interaction with biological media, have until now led to controversial interpretations, mainly due to self-association of the drug in aqueous solution. We present here the first femtosecond study of DOX b...
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ژورنال
عنوان ژورنال: The Journal of Chemical Physics
سال: 2000
ISSN: 0021-9606,1089-7690
DOI: 10.1063/1.480929