In:
Angewandte Chemie, Wiley, Vol. 134, No. 19 ( 2022-05-02)
Abstract:
Developing artificial light‐harvesting scaffolds with a cascade energy transfer process is significant for better understanding of photosynthesis. Here, we report [3+3] self‐assembled Pt II fluorescent macrocycles ( 3 a and 3 b ) as light‐harvesting platforms with cascade energy transfer. The Pt II macrocycles aggregate into nanospheres and show emission‐enhancement characteristics upon increasing water content in acetone medium. These aggregates ( 3a a and 3b a ) serve as energy donors when mixed with the hydrophobic dye Eosin‐Y (ESY). In the presence of a second dye, Nile Red (NiR), an unusual sequential two‐step energy transfer takes place from the macrocycles to NiR. In this case, ESY acts as a bridge in the relay mode. Additionally, a unique strategy to control such an energy transfer process by tuning the chain length of the alkyl group attached to the periphery of the macrocycles is demonstrated.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v134.19
DOI:
10.1002/ange.202200715
Language:
English
Publisher:
Wiley
Publication Date:
2022
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505868-5
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506609-8
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514305-6
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505872-7
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1479266-7
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505867-3
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506259-7
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