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Temperature Dependence of Triplet–Triplet Annihilation Upconversion in Phospholipid Membranes

[Image: see text] Understanding the temperature dependency of triplet–triplet annihilation upconversion (TTA-UC) is important for optimizing biological applications of upconversion. Here the temperature dependency of red-to-blue TTA-UC is reported in a variety of neutral PEGylated phospholipid lipos...

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Detalles Bibliográficos
Autores principales: Askes, Sven H. C., Brodie, Philip, Bruylants, Gilles, Bonnet, Sylvestre
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2017
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5330659/
https://www.ncbi.nlm.nih.gov/pubmed/28059523
http://dx.doi.org/10.1021/acs.jpcb.6b10039
Descripción
Sumario:[Image: see text] Understanding the temperature dependency of triplet–triplet annihilation upconversion (TTA-UC) is important for optimizing biological applications of upconversion. Here the temperature dependency of red-to-blue TTA-UC is reported in a variety of neutral PEGylated phospholipid liposomes. In these systems a delicate balance between lateral diffusion rate of the dyes, annihilator aggregation, and sensitizer self-quenching leads to a volcano plot, with the maximum upconversion intensity occurring near the main order–disorder transition temperature of the lipid membrane.