A dark excited state of fluorescent protein chromophores, considered as Brooker dyes

Olsen, Seth and McKenzie, Ross H. (2010) A dark excited state of fluorescent protein chromophores, considered as Brooker dyes. Chemical Physics Letters, 492 1-3: 150-156.


Author Olsen, Seth
McKenzie, Ross H.
Title A dark excited state of fluorescent protein chromophores, considered as Brooker dyes
Journal name Chemical Physics Letters   Check publisher's open access policy
ISSN 0009-2614
1873-4448
Publication date 2010-05
Sub-type Article (original research)
DOI 10.1016/j.cplett.2010.04.024
Volume 492
Issue 1-3
Start page 150
End page 156
Total pages 7
Place of publication Amsterdam, The Netherlands
Publisher Elseiver BV
Collection year 2011
Language eng
Subject 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
0303 Macromolecular and Materials Chemistry
1007 Nanotechnology
Abstract The green fluorescent protein (GFP) chromophore is a dihydroxyarylmethine (oxonol) dye. Resonance and molecular orbital theories predict two low-lying excitations with distinct oscillator strength and polarization in these systems. Using a variational quantum-chemical model that reflects both theories, we estimate the energy of both states in resonant anionic and cationic forms of the chromophore. The energy of the higher, dark state in these forms is in the same range as the bright transition of the nonresonant neutral form, estimated by similar methods. This suggests interesting roles for the dark state in GFP photophysics. 2010 Elsevier B.V. All rights reserved.
Keyword Perturbation-theory
Structural Basis
Dynamics
Spectra
Spectroscopy
Molecules
Emission
Dronpa
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Received 14 January 2010; accepted 12 April 2010. Available online 16 April 2010.

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2011 Collection
 
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