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Rastislav Smolka, Dancho Yordanov, Kosuke Nakashima , Martin Vala , Jozef Krajčovič , Martin Weiter , Anton Georgiev
Originální název
Control over rotary motion and multicolour switching in 3-hydroxyphtha-limide fluorophores: An interplay between AIE and ESIPT
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
In this paper, we demonstrate the ability of N-substituted 3-hydroxyphthalimides with pyridine and isoquinoline rings to perform multicolour switching by different stimuli. Restriction of the C-N rotary motion of the heterocycles allows control over their photoluminescence performance (PLQY = 54-65%) in water-induced aggregation by an additive interplay of excited-state proton-mediated processes in the aggregates. Restriction of the rotations by the affinity of the heterocyclic nitrogen atoms to Zn2+ and switching to new emission bands (PLQY = 8-29%) in solution and solid state were also achieved. Protonation of the pyridine/isoquinoline rings allows the formation of intramolecular hydrogen bonds with the imide carbonyl groups, resulting in restricted rotations. The protonated forms switch to strong blue emission due to local excitation of the protonated heterocycles, which are unable to undergo proton transfer. Understanding the interplay between both photophysical processes would allow the switching of emissions by multistimuli.
Klíčová slova
3-Hydroxyphthalimide; Aggregation -induced emission; Rotation; Multicolour switching; Excited -state intramolecular proton -transfer; Photoluminescence
Autoři
Vydáno
1. 4. 2023
Nakladatel
ELSEVIER SCI LTD
Místo
OXFORD
ISSN
0143-7208
Periodikum
DYES AND PIGMENTS
Ročník
215
Číslo
1
Stát
Spojené království Velké Británie a Severního Irska
Strany od
111279
Strany do
111292
Strany počet
13
URL
https://www.sciencedirect.com/science/article/pii/S0143720823002048?via%3Dihub
BibTex
@article{BUT184954, author="Rastislav {Smolka} and Martin {Vala} and Jozef {Krajčovič} and Martin {Weiter}", title="Control over rotary motion and multicolour switching in 3-hydroxyphtha-limide fluorophores: An interplay between AIE and ESIPT", journal="DYES AND PIGMENTS", year="2023", volume="215", number="1", pages="111279--111292", doi="10.1016/j.dyepig.2023.111279", issn="0143-7208", url="https://www.sciencedirect.com/science/article/pii/S0143720823002048?via%3Dihub" }