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Singlet energy transfer

Bowen145 has pointed out that the decrease in rate is due to a change in kBjkg. He concluded that neither the energy-transfer (singlet oxygen formation) mechanism nor the complex-formation mechanism... [Pg.30]

The common case, and the one that will be emphasized here, is triplet sensitization. In this case, the intersystem crossing of the sensitizer must be faster than energy transfer to the reactant or solvent from the singlet excited state. [Pg.746]

Sensitizer singlet formed Intersystem crossing of sensitizer Energy transfer to reactant molecule... [Pg.746]

The primary interaction of singlet oxygen, produced by energy transfer from the excited sensitizer, with the diene can give rise to an exciplet that then collapses to peroxide, to a 1,4-biradical or to a 1,4-zwitterion alternatively, the adduct is the result of a concerted action without the involvement of an intermediate. Detailed kinetic Diels-Alder investigations of singlet oxygen and furans indicate that the reactions proceed concertedly but are asynchronous with the involvement of an exciplex as the primary reaction intermediate [63]. [Pg.169]

In dichloromethane solutions, excitation of the chromophoric groups of the dendrons causes singlet-singlet energy transfer processes that lead to the excitation of the porphyrin core. It was found that the dendrimer 17, which has a spherical morphology, exhibits a much higher energy transfer quantum yield (0.8) than the partially substituted species 13-16 (quantum yield <0.32). Fluo-... [Pg.171]

As for the energy transfer to the subsurface layers of zinc oxide from the singlet oxygen molecules, the transfer should lead to an intn ease in the electrical conductivity of semiconductor either due to ejection of electrons into the conduction band h-om shallow traps [67], or due to the injection of electrons into zinc oxide by excited particles [68]. Effects of this kind were observed in the interaction between a ZnO surface and excited pairs of benzophenone [70], and also in adsorption of singlet oxygen on the surface of ZnO monocrystal in electrolyte [69]. [Pg.298]


See other pages where Singlet energy transfer is mentioned: [Pg.163]    [Pg.205]    [Pg.94]    [Pg.432]    [Pg.163]    [Pg.205]    [Pg.94]    [Pg.432]    [Pg.2420]    [Pg.130]    [Pg.131]    [Pg.263]    [Pg.269]    [Pg.270]    [Pg.287]    [Pg.103]    [Pg.435]    [Pg.295]    [Pg.400]    [Pg.401]    [Pg.67]    [Pg.290]    [Pg.402]    [Pg.548]    [Pg.585]    [Pg.84]    [Pg.104]    [Pg.316]    [Pg.140]    [Pg.225]    [Pg.95]    [Pg.95]    [Pg.96]    [Pg.168]    [Pg.173]    [Pg.181]    [Pg.6]    [Pg.176]    [Pg.283]    [Pg.386]    [Pg.389]    [Pg.390]    [Pg.390]    [Pg.218]    [Pg.242]    [Pg.103]    [Pg.64]   
See also in sourсe #XX -- [ Pg.251 , Pg.253 ]

See also in sourсe #XX -- [ Pg.178 , Pg.330 ]




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Electronic singlet energy transfer

Energy singlet

Energy transfer from sensitizer singlet

Energy transfer from sensitizer singlet states

Excited Singlet Energy Transfer and Migration

Excited singlet energy transfer event

Morphology Dependence of Excited Singlet Energy Transfer Events

Photosynthesis, artificial singlet energy transfer

Pyrene singlet energy transfer

Singlet Exciton Energy Transfer

Singlet Quenching by Energy Transfer and Exciplex Formation

Singlet energy transfer Dexter electron exchange

Singlet energy transfer Forster

Singlet energy transfer mechanism

Singlet excitation energy transfer

Singlet oxygen by energy transfer

Singlet states energy transfer

Theory and Experiment of Singlet Excitation Energy Transfer in Mixed Molecular Crystals

Triplet-singlet energy transfer

Triplet-to-singlet energy transfer

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