Strongly coupled bacteriochlorin dyad studied using phase-modulated fluorescence-detected two-dimensional electronic spectroscopy

被引：39

作者：

Tiwari, Vivek ^{[1
]}

Matutes, Yassel Acosta ^{[2
]}

Konar, Arkaprabha ^{[1
]}

Yu, Zhanqian ^{[3
]}

Ptaszek, Marcin ^{[3
]}

Bocian, David F. ^{[4
]}

Holten, Dewey ^{[5
]}

Kirmaier, Christine ^{[5
]}

Ogilvie, Jennifer P. ^{[1
]}

机构：

[1] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

[2] Univ Michigan, Appl Phys Program, Ann Arbor, MI 48109 USA

[3] Univ Maryland Baltimore Cty, Dept Chem & Biochem, Baltimore, MD 21250 USA

[4] Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA

[5] Washington Univ, Dept Chem, St Louis, MO 63130 USA

来源：

OPTICS EXPRESS | 2018年 / 26卷 / 17期

基金：

美国国家科学基金会;

关键词：

RESONANCE RAMAN-SPECTRA; ENERGY-TRANSFER; VIBRONIC COHERENCE; VIBRATIONAL-MODES; QUANTUM COHERENCE; REACTION CENTERS; LIGHT; COMPLEXES; DYNAMICS; SYSTEMS;

D O I：

10.1364/OE.26.022327

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Fluorescence-detected two-dimensional electronic spectroscopy (F-2DES) projects the third-order non-linear polarization in a system as an excited electronic state population which is incoherently detected as fluorescence. Multiple variants of F-2DES have been developed. Here, we report phase-modulated F-2DES measurements on a strongly coupled symmetric bacteriochlorin dyad. a relevant 'toy' model for photosynthetic energy and charge transfer. Coherence map analysis shows that the strongest frequency observed in the dyad is well-separated from the excited state electronic energy gap, and is consistent with a vibrational frequency readily observed in bacteriochlorin monomers. Kinetic rate maps show a picosecond relaxation timescale between the excited states of the dyad. To our knowledge this is the first demonstration of coherence and kinetic analysis using the phase-modulation approach to F-2DES. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：22327 / 22341

页数：15

共 62 条

[1]

[Anonymous], 2002, Molecular Mechanisms of Photosynthesis

[2]

Bakulin AA, 2016, NAT CHEM, V8, P16, DOI [10.1038/NCHEM.2371, 10.1038/nchem.2371]

[3] Calculation of Plane Vibration Frequencies of the Porphin Molecule [J].