Document Detail


Synthesis and properties of novel fluorescent switches.
MedLine Citation:
PMID:  15989336     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
[reaction: see text] Photochromic dithienylethene moieties were covalently attached to fluorescent 4,4-difluoro-8-(4'-iodophenyl)-1,3,5,7-tetramethyl-4-bora-3a,4a-diaza-s-indacene (iodo-BODIPY) via a phenylacetylene linker. UV light induced isomerization of the photochrome results in significant decrease in fluorescence intensity. This fluorescence can be recovered with visible light. Steady-state fluorescence measurements demonstrate that the emission of the dye can be modulated by external light. An intramolecular energy transfer mechanism accounts for the fluorescence quenching in the UV light produced isomers.
Authors:
Tatiana A Golovkova; Denis V Kozlov; Douglas C Neckers
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of organic chemistry     Volume:  70     ISSN:  0022-3263     ISO Abbreviation:  J. Org. Chem.     Publication Date:  2005 Jul 
Date Detail:
Created Date:  2005-07-01     Completed Date:  2005-08-30     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  2985193R     Medline TA:  J Org Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  5545-9     Citation Subset:  IM    
Affiliation:
Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, USA.
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MeSH Terms
Descriptor/Qualifier:
Acetylene / analogs & derivatives,  chemistry
Boron Compounds / chemical synthesis*
Ethylenes / chemistry
Fluorescent Dyes / chemical synthesis*
Isomerism
Light
Molecular Structure
Spectrometry, Fluorescence
Chemical
Reg. No./Substance:
0/4,4-difluoro-4-bora-3a,4a-diaza-s-indacene; 0/Boron Compounds; 0/Ethylenes; 0/Fluorescent Dyes; 536-74-3/phenylacetylene; 74-86-2/Acetylene

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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