Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 60, Issue 34, Pages 18761-18768Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202106035
Keywords
aggregation-induced emission; light harvesting; mechanically interlocked molecules; photocatalysis; rotaxane dendrimers
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Funding
- National Natural Science Foundation of China [21625202, 92056203, 22001073]
- Innovation Program of Shanghai Municipal Education Commission [2019-01-07-00-05-E00012]
- Fundamental Research Funds for the Central Universities
- Shanghai Sailing Program [20YF1411500]
- Guanghua Excellent Postdoctoral Scholarship
- China Postdoctoral Science Foundation [2019M660084, 2020T130198]
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A new family of AIEgen-branched rotaxane dendrimers with multiple AIEgens on each branch was successfully synthesized, showing interesting dynamic features. Novel artificial light-harvesting systems constructed based on these dendrimers exhibited impressive photocatalytic performances.
Aiming at the construction of novel platform for efficient light harvesting, the precise synthesis of a new family of AIEgen-branched rotaxane dendrimers was successful realized from an AIEgen-functionalized [2]rotaxane through a controllable divergent approach. In the resultant AIE macromolecules, up to twenty-one AIEgens located at the tails of each branches, thus making them the first successful example of AIEgen-branched dendrimers. Attributed to the solvent-induced switching feature of the rotaxane branches, the integrated rotaxane dendrimers displayed interesting dynamic feature upon the aggregation-induced emission (AIE) process. Moreover, novel artificial light-harvesting systems were further constructed based on these AIEgen-branched rotaxane dendrimers, which revealed impressive generation-dependent photocatalytic performances for both photooxidation reaction and aerobic cross-dehydrogenative coupling (CDC) reaction.
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