Excited State Processes of 2-Butylamino-6-methyl-4-nitropyridine N-oxide in Nonpolar Solvents. A Transient Absorption Spectroscopy Study

J.S. de Klerk; I.H.M. van Stokkum; A. Szemik-Hojniak; I. Deperasinska; C. Gooijer; H. Zhang; W.J. Buma; F. Ariese

doi:10.1021/jp909468h

Excited State Processes of 2-Butylamino-6-methyl-4-nitropyridine N-oxide in Nonpolar Solvents. A Transient Absorption Spectroscopy Study

J.S. de Klerk, I.H.M. van Stokkum, A. Szemik-Hojniak, I. Deperasinska, C. Gooijer, H. Zhang, W.J. Buma, F. Ariese

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

Earlier steady-state fluorescence studies showed that 2-butylamino-6- methyl-4-nitropyridine N-oxide (2B6M) can undergo fast excited-state intramolecular proton transfer (ESIPT). In a nonpolar solvent such as n-octane, both normal and tautomeric fluorescence was observed. Strikingly, the relative ratio of those two emission bands and the fluorescence quantum yield of the normal emission were found to depend on the excitation wavelength in violation of the Kasha - Vavilov rule. In this work, the system was investigated further by means of transient absorption spectroscopy, followed by global and target analysis. Upon excitation at 420 nm, a normal excited singlet state S

Original language	English
Pages (from-to)	4045-4050
Number of pages	6
Journal	Journal of Physical Chemistry A
Volume	114
Issue number	12
DOIs	https://doi.org/10.1021/jp909468h
Publication status	Published - 2010

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title = "Excited State Processes of 2-Butylamino-6-methyl-4-nitropyridine N-oxide in Nonpolar Solvents. A Transient Absorption Spectroscopy Study",

abstract = "Earlier steady-state fluorescence studies showed that 2-butylamino-6- methyl-4-nitropyridine N-oxide (2B6M) can undergo fast excited-state intramolecular proton transfer (ESIPT). In a nonpolar solvent such as n-octane, both normal and tautomeric fluorescence was observed. Strikingly, the relative ratio of those two emission bands and the fluorescence quantum yield of the normal emission were found to depend on the excitation wavelength in violation of the Kasha - Vavilov rule. In this work, the system was investigated further by means of transient absorption spectroscopy, followed by global and target analysis. Upon excitation at 420 nm, a normal excited singlet state S",

author = "{de Klerk}, J.S. and {van Stokkum}, I.H.M. and A. Szemik-Hojniak and I. Deperasinska and C. Gooijer and H. Zhang and W.J. Buma and F. Ariese",

year = "2010",

doi = "10.1021/jp909468h",

language = "English",

volume = "114",

pages = "4045--4050",

journal = "Journal of Physical Chemistry A",

issn = "1089-5639",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Excited State Processes of 2-Butylamino-6-methyl-4-nitropyridine N-oxide in Nonpolar Solvents. A Transient Absorption Spectroscopy Study

AU - de Klerk, J.S.

AU - van Stokkum, I.H.M.

AU - Szemik-Hojniak, A.

AU - Deperasinska, I.

AU - Gooijer, C.

AU - Zhang, H.

AU - Buma, W.J.

AU - Ariese, F.

PY - 2010

Y1 - 2010

N2 - Earlier steady-state fluorescence studies showed that 2-butylamino-6- methyl-4-nitropyridine N-oxide (2B6M) can undergo fast excited-state intramolecular proton transfer (ESIPT). In a nonpolar solvent such as n-octane, both normal and tautomeric fluorescence was observed. Strikingly, the relative ratio of those two emission bands and the fluorescence quantum yield of the normal emission were found to depend on the excitation wavelength in violation of the Kasha - Vavilov rule. In this work, the system was investigated further by means of transient absorption spectroscopy, followed by global and target analysis. Upon excitation at 420 nm, a normal excited singlet state S

AB - Earlier steady-state fluorescence studies showed that 2-butylamino-6- methyl-4-nitropyridine N-oxide (2B6M) can undergo fast excited-state intramolecular proton transfer (ESIPT). In a nonpolar solvent such as n-octane, both normal and tautomeric fluorescence was observed. Strikingly, the relative ratio of those two emission bands and the fluorescence quantum yield of the normal emission were found to depend on the excitation wavelength in violation of the Kasha - Vavilov rule. In this work, the system was investigated further by means of transient absorption spectroscopy, followed by global and target analysis. Upon excitation at 420 nm, a normal excited singlet state S

U2 - 10.1021/jp909468h

DO - 10.1021/jp909468h

M3 - Article

SN - 1089-5639

VL - 114

SP - 4045

EP - 4050

JO - Journal of Physical Chemistry A

JF - Journal of Physical Chemistry A

IS - 12

ER -

Excited State Processes of 2-Butylamino-6-methyl-4-nitropyridine N-oxide in Nonpolar Solvents. A Transient Absorption Spectroscopy Study

Abstract

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