Influence of Internal Molecular Motions in the Photothermal Conversion Effect of Charge-Transfer Cocrystals
Source abstract
Abstract
Herein, we report two new charge-transfer organic cocrystals, CP-TCNQ and CP-TFBQ . The two cocrystals exhibit broad absorption, good thermal stability, and low photoluminescence quantum yields, the necessary requirements to show the photothermal conversion (PTC) effect. Indeed, the two cocrystals exhibit distinct PTC efficiencies of 11.0 ± 1.4% ( CP-TCNQ ) and 17.0 ± 1.0% ( CP-TFBQ ). The 55% improvement in the observed efficiencies is attributed to the fast in-plane reorientations of the TFBQ fragment, as determined by detailed ssNMR spectroscopy and DFT calculations. This work provides for the first time experimental and computational evidence that the molecular motion of a cocrystal coformer increases its PTC efficiency, paving the way to the design of new crystalline materials with PTC as a regulated property.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Perovskite Materials and Applications · Luminescence and Fluorescent Materials · Organic and Molecular Conductors Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Instituto de Química,Universidad Nacional Autónoma de México, Circuito Exterior S/N Ciudad Universitaria, Coyoacán, Mexico City 04510 Mexico
Department of Chemistry and Biochemistry, Montana State University, 103 Chemistry and Biochemistry Building, Bozeman, Montana 59717, United States
Institute of Organic Chemistry and Biochemistry,Czech Academy of Sciences, Flemingovo nám. 2, 160 00 Prague, Czech Republic
Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720-8229, United States
Funding
Direcci?n General de Asuntos del Personal Acad?mico, Universidad Nacional Aut?noma de M?xico · Ministerstvo ?kolstv?, Ml?de?e a Telov?chovy · Montana State University · Consejo Nacional de Humanidades, Ciencias y Tecnolog?as
References (62)
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