Direct observation of a hydrogen-bonded charge-transfer state of 4-dimethylaminobenzonitrile in methanol by time-resolved IR spectroscopy

Wai Ming Kwok; Michael W. George; David C. Grills; Chensheng Ma; Pavel Matousek; Anthony W. Parker; David Phillips; William T. Toner; Michael Towrie

doi:10.1002/anie.200219816

Direct observation of a hydrogen-bonded charge-transfer state of 4-dimethylaminobenzonitrile in methanol by time-resolved IR spectroscopy

Wai Ming Kwok, Michael W. George, David C. Grills, Chensheng Ma, Pavel Matousek, Anthony W. Parker, David Phillips, William T. Toner, Michael Towrie

Research output: Journal Publication › Article › peer-review

90 Citations (Scopus)

Abstract

Anomalies in the fluorescence spectra of dual fluorescence molecules explained? A comparison of the time-resolved I R absorption of the C≡N band of photoexcited 4-dimethylaminobenzonitrile in MeCN and MeOH provides the first direct observation of the formation of a hydrogen-bonded intramolecular charge-transfer (ICT) state in MeOH and its coexistence with a "free" ICT state (see picture). The so-called dual fluorescence will be triple, not dual.

Original language	English
Pages (from-to)	1826-1830
Number of pages	5
Journal	Angewandte Chemie - International Edition
Volume	42
Issue number	16
DOIs	https://doi.org/10.1002/anie.200219816
Publication status	Published - 25 Apr 2003
Externally published	Yes

Keywords

Charge transfer
Cyanides
Fluorescence
Hydrogen bonds
IR spectroscopy
Time-resolved spectroscopy

ASJC Scopus subject areas

Catalysis
General Chemistry

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10.1002/anie.200219816

Cite this

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title = "Direct observation of a hydrogen-bonded charge-transfer state of 4-dimethylaminobenzonitrile in methanol by time-resolved IR spectroscopy",

abstract = "Anomalies in the fluorescence spectra of dual fluorescence molecules explained? A comparison of the time-resolved I R absorption of the C≡N band of photoexcited 4-dimethylaminobenzonitrile in MeCN and MeOH provides the first direct observation of the formation of a hydrogen-bonded intramolecular charge-transfer (ICT) state in MeOH and its coexistence with a {"}free{"} ICT state (see picture). The so-called dual fluorescence will be triple, not dual.",

keywords = "Charge transfer, Cyanides, Fluorescence, Hydrogen bonds, IR spectroscopy, Time-resolved spectroscopy",

author = "Kwok, \{Wai Ming\} and George, \{Michael W.\} and Grills, \{David C.\} and Chensheng Ma and Pavel Matousek and Parker, \{Anthony W.\} and David Phillips and Toner, \{William T.\} and Michael Towrie",

year = "2003",

month = apr,

day = "25",

doi = "10.1002/anie.200219816",

language = "English",

volume = "42",

pages = "1826--1830",

journal = "Angewandte Chemie - International Edition",

issn = "1433-7851",

publisher = "John Wiley and Sons Ltd",

number = "16",

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TY - JOUR

T1 - Direct observation of a hydrogen-bonded charge-transfer state of 4-dimethylaminobenzonitrile in methanol by time-resolved IR spectroscopy

AU - Kwok, Wai Ming

AU - George, Michael W.

AU - Grills, David C.

AU - Ma, Chensheng

AU - Matousek, Pavel

AU - Parker, Anthony W.

AU - Phillips, David

AU - Toner, William T.

AU - Towrie, Michael

PY - 2003/4/25

Y1 - 2003/4/25

N2 - Anomalies in the fluorescence spectra of dual fluorescence molecules explained? A comparison of the time-resolved I R absorption of the C≡N band of photoexcited 4-dimethylaminobenzonitrile in MeCN and MeOH provides the first direct observation of the formation of a hydrogen-bonded intramolecular charge-transfer (ICT) state in MeOH and its coexistence with a "free" ICT state (see picture). The so-called dual fluorescence will be triple, not dual.

AB - Anomalies in the fluorescence spectra of dual fluorescence molecules explained? A comparison of the time-resolved I R absorption of the C≡N band of photoexcited 4-dimethylaminobenzonitrile in MeCN and MeOH provides the first direct observation of the formation of a hydrogen-bonded intramolecular charge-transfer (ICT) state in MeOH and its coexistence with a "free" ICT state (see picture). The so-called dual fluorescence will be triple, not dual.

KW - Charge transfer

KW - Cyanides

KW - Fluorescence

KW - Hydrogen bonds

KW - IR spectroscopy

KW - Time-resolved spectroscopy

UR - https://www.scopus.com/pages/publications/0037693767

U2 - 10.1002/anie.200219816

DO - 10.1002/anie.200219816

M3 - Article

C2 - 12722072

AN - SCOPUS:0037693767

SN - 1433-7851

VL - 42

SP - 1826

EP - 1830

JO - Angewandte Chemie - International Edition

JF - Angewandte Chemie - International Edition

IS - 16

ER -

Direct observation of a hydrogen-bonded charge-transfer state of 4-dimethylaminobenzonitrile in methanol by time-resolved IR spectroscopy

Abstract

Keywords

ASJC Scopus subject areas

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