Shota Hosoya
;
Sunao Shoji
;
Takayuki Nakanishi
;
Masato Kobayashi
;
Mengfei Wang
;
Koji Fushimi
;
Tetsuya Taketsugu
;
Yuichi Kitagawa
;
Yasuchika Hasegawa
Description:
(abstract)Metal–organic cages (MOCs) with luminophores have significant advantages for the facile detection of specific molecules based on turn-on or turn-off luminescence changes induced by host–guest complexation. One important challenge is the development of turn-on-type near-infrared (NIR)-luminescent MOCs. In this study, we synthesized a novel MOC consisting of two porphyrin dyes linked by four Yb(III) complexes, which exhibit bimodal red and NIR fluorescence signals upon photoexcitation of the porphyrin π system. Single-crystal X-ray structural analysis and computational molecular modeling revealed that planar aromatic perfluorocarbons were intercalated into the MOC. The tight packing between the MOC and guests enhanced the NIR fluorescence of Yb(III) by suppressing energy transfer from the photoexcited porphyrin to oxygen molecules. Guest-responsive turn-on NIR fluorescence changes in an MOC were successfully demonstrated.
Rights:
This document is the Accepted Manuscript version of a Published Work that appeared in final form in Inorganic Chemistry, copyright © 2024 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.inorgchem.4c01348
Keyword: Porphyrin, Luminescence
Date published: 2024-06-03
Publisher: American Chemical Society (ACS)
Journal:
Funding:
Manuscript type: Author's version (Accepted manuscript)
MDR DOI: https://doi.org/10.48505/nims.4835
First published URL: https://doi.org/10.1021/acs.inorgchem.4c01348
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Updated at: 2025-05-21 08:30:16 +0900
Published on MDR: 2025-05-21 08:28:20 +0900
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