Enhanced S2 Fluorescence from a Free-Base Tetraphenylporphyrin Surface-Mounted Metal Organic Framework

Xiaoxin Li; Gagik G. Gurzadyan; Maxim F. Gelin; Wolfgang Domcke; Chenghuan Gong; Jinxuan Liu; Licheng Sun

doi:10.1021/acs.jpcc.8b06836

Enhanced S₂ Fluorescence from a Free-Base Tetraphenylporphyrin Surface-Mounted Metal Organic Framework

Xiaoxin Li, Gagik G. Gurzadyan, Maxim F. Gelin, Wolfgang Domcke, Chenghuan Gong, Jinxuan Liu, Licheng Sun

Lehrstuhl für Theoretische Chemie

Publikation: Beitrag in Fachzeitschrift › Artikel › Begutachtung

13 Zitate (Scopus)

Abstract

The ultrafast transient dynamics of a free-base tetraphenylporphyrin (H₂TPP) surface-mounted metal organic framework (SURMOF) is spectroscopically characterized and compared with that of H₂TPP in ethanol solution. A dramatic increase of the quantum yield of the Soret band fluorescence (S₂ → S₀) is observed in the H₂TPP-SURMOF, which is accompanied by an increase of the S₂ fluorescence lifetime and a broadening of the fluorescence spectra. In contrast, the Q band (S₁) fluorescence is strongly quenched in the H₂TTP SURMOF compared with the fluorescence of H₂TTP in ethanol solution. The observed transient absorption kinetics supports the fluorescence data. The enhanced fluorescence in the SURMOF compared with H₂TPP in solution is attributed to the combination of two factors: the alignment of the vibrational energy levels of the dominant Franck-Condon active mode of the Soret and Q bands and the weaker coupling of these modes to the environment.

Originalsprache	Englisch
Seiten (von - bis)	23321-23328
Seitenumfang	8
Fachzeitschrift	Journal of Physical Chemistry C
Jahrgang	122
Ausgabenummer	41
DOIs	https://doi.org/10.1021/acs.jpcc.8b06836
Publikationsstatus	Veröffentlicht - 18 Okt. 2018

Zugriff auf Dokument

10.1021/acs.jpcc.8b06836

Andere Dateien und Links

Verknüpfung zur Publikation in Scopus

Dieses zitieren

@article{19fba391dbfb44dd87a3684ead8d473d,

title = "Enhanced S2 Fluorescence from a Free-Base Tetraphenylporphyrin Surface-Mounted Metal Organic Framework",

abstract = "The ultrafast transient dynamics of a free-base tetraphenylporphyrin (H2TPP) surface-mounted metal organic framework (SURMOF) is spectroscopically characterized and compared with that of H2TPP in ethanol solution. A dramatic increase of the quantum yield of the Soret band fluorescence (S2 → S0) is observed in the H2TPP-SURMOF, which is accompanied by an increase of the S2 fluorescence lifetime and a broadening of the fluorescence spectra. In contrast, the Q band (S1) fluorescence is strongly quenched in the H2TTP SURMOF compared with the fluorescence of H2TTP in ethanol solution. The observed transient absorption kinetics supports the fluorescence data. The enhanced fluorescence in the SURMOF compared with H2TPP in solution is attributed to the combination of two factors: the alignment of the vibrational energy levels of the dominant Franck-Condon active mode of the Soret and Q bands and the weaker coupling of these modes to the environment.",

author = "Xiaoxin Li and Gurzadyan, {Gagik G.} and Gelin, {Maxim F.} and Wolfgang Domcke and Chenghuan Gong and Jinxuan Liu and Licheng Sun",

note = "Publisher Copyright: {\textcopyright} 2018 American Chemical Society.",

year = "2018",

month = oct,

day = "18",

doi = "10.1021/acs.jpcc.8b06836",

language = "English",

volume = "122",

pages = "23321--23328",

journal = "Journal of Physical Chemistry C",

issn = "1932-7447",

publisher = "American Chemical Society",

number = "41",

}

TY - JOUR

T1 - Enhanced S2 Fluorescence from a Free-Base Tetraphenylporphyrin Surface-Mounted Metal Organic Framework

AU - Li, Xiaoxin

AU - Gurzadyan, Gagik G.

AU - Gelin, Maxim F.

AU - Domcke, Wolfgang

AU - Gong, Chenghuan

AU - Liu, Jinxuan

AU - Sun, Licheng

PY - 2018/10/18

Y1 - 2018/10/18

N2 - The ultrafast transient dynamics of a free-base tetraphenylporphyrin (H2TPP) surface-mounted metal organic framework (SURMOF) is spectroscopically characterized and compared with that of H2TPP in ethanol solution. A dramatic increase of the quantum yield of the Soret band fluorescence (S2 → S0) is observed in the H2TPP-SURMOF, which is accompanied by an increase of the S2 fluorescence lifetime and a broadening of the fluorescence spectra. In contrast, the Q band (S1) fluorescence is strongly quenched in the H2TTP SURMOF compared with the fluorescence of H2TTP in ethanol solution. The observed transient absorption kinetics supports the fluorescence data. The enhanced fluorescence in the SURMOF compared with H2TPP in solution is attributed to the combination of two factors: the alignment of the vibrational energy levels of the dominant Franck-Condon active mode of the Soret and Q bands and the weaker coupling of these modes to the environment.

AB - The ultrafast transient dynamics of a free-base tetraphenylporphyrin (H2TPP) surface-mounted metal organic framework (SURMOF) is spectroscopically characterized and compared with that of H2TPP in ethanol solution. A dramatic increase of the quantum yield of the Soret band fluorescence (S2 → S0) is observed in the H2TPP-SURMOF, which is accompanied by an increase of the S2 fluorescence lifetime and a broadening of the fluorescence spectra. In contrast, the Q band (S1) fluorescence is strongly quenched in the H2TTP SURMOF compared with the fluorescence of H2TTP in ethanol solution. The observed transient absorption kinetics supports the fluorescence data. The enhanced fluorescence in the SURMOF compared with H2TPP in solution is attributed to the combination of two factors: the alignment of the vibrational energy levels of the dominant Franck-Condon active mode of the Soret and Q bands and the weaker coupling of these modes to the environment.

UR - http://www.scopus.com/inward/record.url?scp=85054667483&partnerID=8YFLogxK

U2 - 10.1021/acs.jpcc.8b06836

DO - 10.1021/acs.jpcc.8b06836

M3 - Article

AN - SCOPUS:85054667483

SN - 1932-7447

VL - 122

SP - 23321

EP - 23328

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

IS - 41