Folding and unfolding of chromophoric foldamers show unusual colorful single molecule spectral dynamics.

Folding and unfolding of chromophoric foldamers show unusual colorful single molecule spectral dynamics. Research Abstract Details 

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Folding and unfolding of chromophoric foldamers show unusual colorful single molecule spectral dynamics. Abstract Text:

Jason J Han,Wei Wang,Alexander D Q Li,

A series of well-defined linear multichromophoric foldamers with a specific sequence of alternating rigid perylene chromophores and flexible ethylene glycol chains were studied by single molecule fluorescence spectroscopy. Monomer showed minor spectral fluctuations compared to trimer and hexamer, which showed unusual and colorful spectral dynamics attributed to a stochastic photoinduced unfolding/folding phenomenon. The range of spectral shapes observed indicates varying degrees of pi-pi interaction between adjacent chromophores, with vibronically resolved green emission indicating completely unfolded structures and broad red emission indicating highly coupled and extensively folded pi-stacks. The rate of switching between different spectral shapes in the spectral trajectories suggests the existence of multiple pathways between the folded and unfolded states.

Folding and unfolding of chromophoric foldamers show unusual colorful single molecule spectral dynamics. Publishing Authors By Initials

JJ Han,W Wang,AD Li,

For similar biochemical phenomena, metabolism, and nutrition: biochemical phenomena: protein folding research abstracts see: biochemical phenomena, metabolism, and nutrition: biochemical phenomena: protein folding research

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Folding and unfolding of chromophoric foldamers show unusual colorful single molecule spectral dynamics. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Journal of the American Chemical Society

VOLUME: 128

Page Numbers: 672-3

Journal Abbreviation: J. Am. Chem. Soc.

ISSN: 0002-7863

DAY: 25

MONTH: Jan

YEAR: 2006

Folding and unfolding of chromophoric foldamers show unusual colorful single molecule spectral dynamics. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 7503056

Folding and unfolding of chromophoric foldamers show unusual colorful single molecule spectral dynamics. Keywords Mesh Terms:

KEYWORDS: Protein Folding

MESH TERMS: chemistry

Chemical & Substance for Abstract: Folding and unfolding of chromophoric foldamers show unusual colorful single molecule spectral dynamics. Information

Substance Name: Perylene

Registry Number: 198-55-0

Grant and Affiliation Information for Folding and unfolding of chromophoric foldamers show unusual colorful single molecule spectral dynamics.

AFFILIATION: Department of Chemistry, Washington State University, Pullman, Washington 99164, USA.

Country: United States

AGENCY: United States NIGMS

GRANT: GM065306

ACRONYM: GM

MEDLINETA: J Am Chem Soc

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