Organic Photothermal Materials Obtained Using Thermally Activated Delayed Fluorescence Design Principles.
Chemistry
; 30(4): e202302861, 2024 Jan 16.
Article
em En
| MEDLINE
| ID: mdl-38015005
ABSTRACT
Organic small molecules with high photothermal conversion efficiencies that absorb near-infrared light are desirable for photothermal therapy due to their improved biocompatibility compared to inorganic materials and their ability to absorb light in the biological transparency window (650-1350â
nm). Here we report three donor-acceptor organic materials DM-ANDI, O-ANDI, and S-ANDI that show high photothermal conversion efficiencies of 46-68 % with near-infrared absorption. The design of these molecules is based on the rational modification of a thermally activated delayed fluorescence material to favour a low photoluminescence quantum yield by reducing HOMO-LUMO overlap. Encapsulating these materials into either neat nanoparticles or aggregated organic dots modulates their photothermal conversion efficiencies, and also facilitates dispersion in water.
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MEDLINE
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En
Ano de publicação:
2024
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Article