Rotational and vibrational dynamics in the excited electronic state of deprotonated and protonated fluorescein studied by time-resolved photofragmentation in an ion trap

被引：8

作者：

Imanbaew, Dimitri ^{[1
]}

Gelin, Maxim F. ^{[2
]}

Riehn, Christoph ^{[1
,3
]}

机构：

[1] Tech Univ Kaiserslautern, Fachbereich Chem, Erwin Schrodinger Str 52-54, D-67663 Kaiserslautern, Germany

[2] Tech Univ Munich, Fak Chem, Lichtenbergstr 4, D-85747 Garching, Germany

[3] Landesforschungszentrum OPTIMAS, Erwin Schrodinger Str 46, D-67663 Kaiserslautern, Germany

来源：

STRUCTURAL DYNAMICS-US | 2016年 / 3卷 / 04期

关键词：

GAS-PHASE FLUORESCEIN; ACTION SPECTROSCOPY; ANISOTROPY; DISSOCIATION; MOLECULES; 2'; 7'-DICHLOROFLUORESCEIN; PHOTODETACHMENT; ABSORPTION; PHOTON;

D O I：

10.1063/1.4953367

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Excited state dynamics of deprotonated and protonated fluorescein were investigated by polarization dependent femtosecond time-resolved pump-probe photofragmentation in a 3D ion trap. Transients of deprotonated fluorescein exhibit vibrational wavepacket dynamics with weak polarization dependence. Transients of protonated fluorescein show only effects of molecular alignment and rotational dephasing. The time resolved rotational anisotropy of protonated fluorescein is simulated by the calculated orientational correlation function. The observed differences between deprotonated and protonated fluorescein are ascribed to their different higher lying electronically excited states and corresponding structures. This is partially supported by time-dependent density functional theory calculations of the excited state structures. (C) 2016 Author(s).

引用

页数：13

共 46 条

[1] Fluorescence anisotropy:: A method for early detection of Alzheimer β-peptide (Aβ) aggregation [J].

Allsop, D ;

Swanson, L ;

Moore, S ;

Davies, Y ;

York, A ;

El-Agnaf, OMA ;

Soutar, I .

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, 2001, 285 (01) :58-63

[2] Fluorescence Lifetime Measurements and Biological Imaging [J].

Berezin, Mikhail Y. ;

Achilefu, Samuel .

CHEMICAL REVIEWS, 2010, 110 (05) :2641-2684

[3] FEmtosecond dynamics of optically induced anisotropy of complex molecules in the gas phase [J].

A. P. Blokhin ;

M. F. Gelin ;

O. V. Buganov ;

V. A. Dubovskii ;

S. A. Tikhomirov ;

G. B. Tolstorozhev .

Journal of Applied Spectroscopy, 2003, 70 (1) :70-78

[4]

Blokhin A. P., 1984, IZV AKAD NAUK BSS FM, V4, P58

[5] Polarized fluorescence of polyatomic fragments produced through photodissociation of polyatomic molecules in the gas phase [J].

Blokhin, AP ;

Gelin, MF ;

Kalosha, II ;

Polubisok, SA ;

Tolkachev, VA .

JOURNAL OF CHEMICAL PHYSICS, 1999, 110 (02) :978-993

[6] Dynamics of optically induced anisotropy in an ensemble of asymmetric top molecules in the gas phase [J].

Blokhin, AP ;

Gelin, MF ;

Khoroshilov, EV ;

Kryukov, IV ;

Sharkov, AV .

OPTICS AND SPECTROSCOPY, 2003, 95 (03) :346-352

[7] Long-range corrected hybrid density functionals with damped atom-atom dispersion corrections [J].

Chai, Jeng-Da ;

Head-Gordon, Martin .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2008, 10 (44) :6615-6620

[8] FLUORESCENCE RESONANCE ENERGY-TRANSFER ANALYSIS OF THE STRUCTURE OF THE 4-WAY DNA JUNCTION [J].

CLEGG, RM ;

MURCHIE, AIH ;

ZECHEL, A ;

CARLBERG, C ;

DIEKMANN, S ;

LILLEY, DMJ .

BIOCHEMISTRY, 1992, 31 (20) :4846-4856

[9] DNA binding induces dissociation of the multimeric form of HIV-1 integrase: A time-resolved fluorescence anisotropy study [J].

Deprez, E ;

Tauc, P ;

Leh, H ;

Mouscadet, JF ;

Auclair, C ;

Hawkins, ME ;

Brochon, JC .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2001, 98 (18) :10090-10095

[10] CONFORMATIONAL DISTRIBUTIONS OF A 4-WAY DNA JUNCTION REVEALED BY TIME-RESOLVED FLUORESCENCE RESONANCE ENERGY-TRANSFER [J].

EIS, PS ;

MILLAR, DP .

BIOCHEMISTRY, 1993, 32 (50) :13852-13860

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