ChemInform Abstract: Photochemical Reactions in Organized Assemblies. Part 46. Energy- and Electron-Transfer Quenching of Surfactant trans-Stilbenes in Supported Multilayers: The Use of Hydrophobic Substrate Chromophores to Determine Short-Range Distance

ChemInform ◽  
1987 ◽  
Vol 18 (5) ◽  
Author(s):  
W. F. MOONEY ◽  
D. G. WHITTEN
Keyword(s):  
Electron Transfer ◽  
Short Range ◽  
Photochemical Reactions ◽  
Hydrophobic Substrate ◽  
Energy And Electron Transfer ◽  
Organized Assemblies

Photochemical reactions in organized assemblies. 40. Amylose and carboxymethylamylose inclusion complexes with photoreactive molecules

1985 ◽  
Vol 63 (6) ◽  
pp. 1315-1319 ◽  
Author(s):  
Brian R. Suddaby ◽  
Raymond N. Dominey ◽  
Y. Hui ◽  
David G. Whitten
Keyword(s):  
Electron Transfer ◽  
Photochemical Reactions ◽  
Water Soluble ◽  
Enhanced Fluorescence ◽  
Transfer Rates ◽  
Back Electron Transfer ◽  
Organized Assemblies ◽  
Stilbene Derivatives ◽  
Polypyridine Complexes ◽  
Ruthenium Polypyridine

This paper focuses on a study of unimolecular and bimolecular photoreactions occurring with reactants which can be incorporated into the linear polysugars amylose and carboxymethylamylose. Hydrophobic and surfactant trans (E) stilbene derivatives form complexes in which the stilbene chromophore shows enhanced fluorescence and reduced trans → cis isomerization efficiencies. The reactivity of the excited surfactant–stilbene singlet towards the quencher iodide ion has been compared in water/dimethylsulfoxide in the presence and absence of amylose under conditions where complex formation is nearly complete. Some relatively hydrophobic viologen dications have also been found to form complexes with the water soluble carboxymethylamylose. Although the dications complex relatively weakly, the partially reduced monocations complex more strongly. This results in selective retardation of back electron transfer rates when the viologens are used as electron transfer quencher-oxidants for certain luminescent ruthenium polypyridine complexes.

Sequential Energy and Electron Transfer in Aggregates of Tetrakis[oligo(p-phenylene vinylene)] Porphyrins and C60in Water

2005 ◽  
Vol 127 (39) ◽  
pp. 13484-13485 ◽  
Author(s):  
Martin Wolffs ◽  
Freek J. M. Hoeben ◽  
Edwin H. A. Beckers ◽  
Albertus P. H. J. Schenning ◽  
E. W. Meijer
Keyword(s):  
Electron Transfer ◽  
Phenylene Vinylene ◽  
Energy And Electron Transfer
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