Aggregation-induced emission from silole-based lumophores embedded in organic-inorganic hybrid hosts.
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Authors
Publication Date
2021-10-14Journal Title
J Mater Chem C Mater
ISSN
2050-7526
Publisher
Royal Society of Chemistry (RSC)
Volume
9
Issue
39
Pages
13914-13925
Type
Article
This Version
VoR
Physical Medium
Electronic-eCollection
Metadata
Show full item recordCitation
Lyu, G., Southern, T. J., Charles, B. L., Roger, M., Gerbier, P., Clément, S., & Evans, R. C. (2021). Aggregation-induced emission from silole-based lumophores embedded in organic-inorganic hybrid hosts.. J Mater Chem C Mater, 9 (39), 13914-13925. https://doi.org/10.1039/d1tc02794h
Abstract
Aggregation-induced emitters - or AIEgens - are often symbolised by their photoluminescence enhancement as a result of aggregation in a poor solvent. However, for some applications, it is preferable for the AIE response to be induced in the solid-state. Here, the ability of an organic-inorganic hybrid polymer host to induce the AIE response from embedded silole-based lumophores has been explored. We have focussed on understanding how the incorporation method controls the extent of lumophore aggregation and thus the associated photophysical properties. To achieve this, two sample concentration series have been prepared, based on either the parent AIEgen 1,1-dimethyl-2,3,4,5-tetraphenylsilole (DMTPS) or the silylated analogue (DMTPS-Sil), which were physically doped or covalently grafted, respectively, to dU(600) - a member of the ureasil family of poly(oxyalkylene)/siloxane hybrids. Steady-state and time-resolved photoluminescence measurements, coupled with confocal microscopy studies, revealed that covalent grafting leads to improved dispersibility of the AIEgen, reduced scattering losses, increased photoluminescence quantum yields (up to ca. 40%) and improved chemical stability. Moreover, the ureasil also functions as a photoactive host that undergoes excitation energy transfer to the embedded DMTPS-Sil with an efficiency of almost 70%. This study highlights the potential for designing complex photoluminescent hybrid polymers exhibiting an ehanced AIE response for solid-state optical applications.
Relationships
Is supplemented by: https://doi.org/10.17863/CAM.82796
Sponsorship
European Research Council (818762)
EPSRC (1937468)
Identifiers
External DOI: https://doi.org/10.1039/d1tc02794h
This record's URL: https://www.repository.cam.ac.uk/handle/1810/335532
Rights
Attribution 3.0 Unported (CC BY 3.0)
Licence URL: https://creativecommons.org/licenses/by/3.0/
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