Self-Assembled Fluorescent Block Copolymer Micelles with Responsive Emission.
Journal
Angewandte Chemie (International ed. in English)
ISSN: 1521-3773
Titre abrégé: Angew Chem Int Ed Engl
Pays: Germany
ID NLM: 0370543
Informations de publication
Date de publication:
04 04 2022
04 04 2022
Historique:
received:
23
12
2021
pubmed:
8
2
2022
medline:
12
4
2022
entrez:
7
2
2022
Statut:
ppublish
Résumé
Responsive fluorescent materials offer a high potential for sensing and (bio-)imaging applications. To investigate new concepts for such materials and to broaden their applicability, the previously reported non-fluorescent zinc(II) complex [Zn(L)] that shows coordination-induced turn-on emission was encapsulated into a family of non-fluorescent polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) diblock copolymer micelles leading to brightly emissive materials. Coordination-induced turn-on emission upon incorporation and ligation of the [Zn(L)] in the P4VP core outperform parent [Zn(L)] in pyridine solution with respect to lifetimes, quantum yields, and temperature resistance. The quantum yield can be easily tuned by tailoring the selectivity of the employed solvent or solvent mixture and, thus, the tendency of the PS-b-P4VP diblock copolymers to self-assemble into micelles. A medium-dependent off-on sensor upon micelle formation could be established by suppression of non-micelle-borne emission background pertinent to chloroform through controlled acidification indicating an additional pH-dependent process.
Identifiants
pubmed: 35129881
doi: 10.1002/anie.202117570
pmc: PMC9310857
doi:
Substances chimiques
Micelles
0
Polymers
0
Solvents
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
e202117570Informations de copyright
© 2022 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.
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