Facile fabrication of end-functional PLLA with AIEgens via Ugi reaction

Herein, we report a facile approach to synthesize poly(l-lactide) (PLLA) with end-capped aggregation-induced emission (AIE) luminogens via the Ugi reaction, a typical multi-component reactions (MCRs). In the presence of carboxylic acid and isocyanide, end-functionalized PLLA with tetraphenylethylene...

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Published in:Polymer (Guilford) 2022-01, Vol.239, p.124432, Article 124432
Main Authors: Zeng, Guangjian, Qiu, Lu, Li, Xinyu, Wen, Tao
Format: Article
Language:English
Subjects:
Aggregation-induced emission
Aldehydes
Carboxylic acids
Crystallization
End-functionalization
Fabrication
Photoluminescence
Photons
Poly(L-lactide)
Polylactic acid
Polymers
Ugi reaction
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cited_by cdi_FETCH-LOGICAL-c337t-493e325beea738051b1e9de9e29cfec0db0fe54e96b2e895ba7e13408997e8c23
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container_title Polymer (Guilford)
container_volume 239
creator Zeng, Guangjian
Qiu, Lu
Li, Xinyu
Wen, Tao
description Herein, we report a facile approach to synthesize poly(l-lactide) (PLLA) with end-capped aggregation-induced emission (AIE) luminogens via the Ugi reaction, a typical multi-component reactions (MCRs). In the presence of carboxylic acid and isocyanide, end-functionalized PLLA with tetraphenylethylene (TPE), i.e., PLLA-TPE, can be synthesized from aldehyde-terminated PLLA and amine-substituted TPE. The photophysical properties of PLLA-TPE in solution and in solid film were investigated. Also, the impact of TPE end-group on the crystallization behavior of PLLA and the influence of crystallization on photoluminescence were examined. This work provides an effective approach for the development of novel end-functionalized polymers. [Display omitted] •End-functional PLLA with AIEgens can be synthesized via the Ugi reaction.•PLLA chains can promote the aggregating of TPE motifs, giving a low critical concentration of AIE.•Crystallization of PLLA gives rise to a weakened aggregation of TPE motifs, resulting in the reduced PL intensity.
doi_str_mv 10.1016/j.polymer.2021.124432
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subjects Aggregation-induced emission
Aldehydes
Carboxylic acids
Crystallization
End-functionalization
Fabrication
Photoluminescence
Photons
Poly(L-lactide)
Polylactic acid
Polymers
Ugi reaction
title Facile fabrication of end-functional PLLA with AIEgens via Ugi reaction
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