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Temperature Dependence of Triplet-Triplet Annihilation Upconversion in Phospholipid Membranes.


ABSTRACT: 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.

SUBMITTER: Askes SH 

PROVIDER: S-EPMC5330659 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature

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Temperature Dependence of Triplet-Triplet Annihilation Upconversion in Phospholipid Membranes.

Askes Sven H C SH   Brodie Philip P   Bruylants Gilles G   Bonnet Sylvestre S  

The journal of physical chemistry. B 20170124 4


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 ne  ...[more]

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