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Self-Assembled Fluorescent Block Copolymer Micelles with Responsive Emission

Title data

Kurz, Hannah ; Hils, Christian ; Timm, Jana ; Hörner, Gerald ; Greiner, Andreas ; Marschall, Roland ; Schmalz, Holger ; Weber, Birgit:
Self-Assembled Fluorescent Block Copolymer Micelles with Responsive Emission.
In: Angewandte Chemie International Edition. Vol. 61 (2022) Issue 15 . - No. e202117570.
ISSN 1521-3773
DOI: https://doi.org/10.1002/anie.202117570

Official URL: Volltext

Abstract in another language

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.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Block Copolymers; Fluorescence; Micelles; Schiff Bases; Sensors
Institutions of the University: Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry IV
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry IV > Chair Inorganic Chemistry IV - Univ.-Prof. Dr. Birgit Weber
Result of work at the UBT: Yes
DDC Subjects: 500 Science
500 Science > 540 Chemistry
Date Deposited: 09 Feb 2022 09:23
Last Modified: 25 Oct 2022 13:59
URI: https://eref.uni-bayreuth.de/id/eprint/68645