Solvent-controlled assembly of aromatic glutamic dendrimers for efficient luminescent color conversion

A binary supramolecular system where self-sorting and coassembly behavior can be switched by changing the solvent polarity is hereby reported. Glutamic dendron is separately conjugated with pyrene and naphthalimide luminophores through an alkyl spacer. The resulting structurally similar building uni...

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Main Authors: Xing, Pengyao, Yang, Chaolong, Wang, Yang, Phua, Fiona Soo Zeng, Zhao, Yanli
Other Authors: School of Materials Science and Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/142965
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1429652020-07-16T02:32:18Z Solvent-controlled assembly of aromatic glutamic dendrimers for efficient luminescent color conversion Xing, Pengyao Yang, Chaolong Wang, Yang Phua, Fiona Soo Zeng Zhao, Yanli School of Materials Science and Engineering School of Physical and Mathematical Sciences Division of Chemistry and Biological Chemistry Engineering::Materials Coassembly Dendrimers A binary supramolecular system where self-sorting and coassembly behavior can be switched by changing the solvent polarity is hereby reported. Glutamic dendron is separately conjugated with pyrene and naphthalimide luminophores through an alkyl spacer. The resulting structurally similar building units can self-assemble into one-dimensional micro/nanostructures with hexagonal and lamellar packing, respectively. Varying solvents from polar aqueous solution to nonpolar decane is evidenced to profoundly inverse the superchirality and switch self-sorted assembly to coassembly of the two building blocks. The moisture sensitivity of the naphthalimide moiety is considered the primary driving force for the self-sorting phenomenon in aqueous solution, resulting in inevitable hydration to repel its stacking with hydrophobic pyrene moiety. On the other hand, the naphthalimide unit can integrate segmentally with the pyrene unit in decane, greatly facilitating the nanofiber growth and supramolecular gel formation along with improved energy transfer efficiency between luminophores. As a result, the coassembly-based thin films show efficient luminescent color conversion upon the UV light irradiation. This research presents a useful route for the fabrication of controllable solution-processed light emitting devices from self-assembled multicomponent systems. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) 2020-07-16T02:32:18Z 2020-07-16T02:32:18Z 2018 Journal Article Xing, P., Yang, C., Wang, Y., Phua, F. S. Z., & Zhao, Y. (2018). Solvent-controlled assembly of aromatic glutamic dendrimers for efficient luminescent color conversion. Advanced Functional Materials, 28(34), 1802859. doi:10.1002/adfm.201802859 1616-301X https://hdl.handle.net/10356/142965 10.1002/adfm.201802859 2-s2.0-85051778265 34 28 en Advanced Functional Materials © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Engineering::Materials
Coassembly
Dendrimers
spellingShingle Engineering::Materials
Coassembly
Dendrimers
Xing, Pengyao
Yang, Chaolong
Wang, Yang
Phua, Fiona Soo Zeng
Zhao, Yanli
Solvent-controlled assembly of aromatic glutamic dendrimers for efficient luminescent color conversion
description A binary supramolecular system where self-sorting and coassembly behavior can be switched by changing the solvent polarity is hereby reported. Glutamic dendron is separately conjugated with pyrene and naphthalimide luminophores through an alkyl spacer. The resulting structurally similar building units can self-assemble into one-dimensional micro/nanostructures with hexagonal and lamellar packing, respectively. Varying solvents from polar aqueous solution to nonpolar decane is evidenced to profoundly inverse the superchirality and switch self-sorted assembly to coassembly of the two building blocks. The moisture sensitivity of the naphthalimide moiety is considered the primary driving force for the self-sorting phenomenon in aqueous solution, resulting in inevitable hydration to repel its stacking with hydrophobic pyrene moiety. On the other hand, the naphthalimide unit can integrate segmentally with the pyrene unit in decane, greatly facilitating the nanofiber growth and supramolecular gel formation along with improved energy transfer efficiency between luminophores. As a result, the coassembly-based thin films show efficient luminescent color conversion upon the UV light irradiation. This research presents a useful route for the fabrication of controllable solution-processed light emitting devices from self-assembled multicomponent systems.
author2 School of Materials Science and Engineering
author_facet School of Materials Science and Engineering
Xing, Pengyao
Yang, Chaolong
Wang, Yang
Phua, Fiona Soo Zeng
Zhao, Yanli
format Article
author Xing, Pengyao
Yang, Chaolong
Wang, Yang
Phua, Fiona Soo Zeng
Zhao, Yanli
author_sort Xing, Pengyao
title Solvent-controlled assembly of aromatic glutamic dendrimers for efficient luminescent color conversion
title_short Solvent-controlled assembly of aromatic glutamic dendrimers for efficient luminescent color conversion
title_full Solvent-controlled assembly of aromatic glutamic dendrimers for efficient luminescent color conversion
title_fullStr Solvent-controlled assembly of aromatic glutamic dendrimers for efficient luminescent color conversion
title_full_unstemmed Solvent-controlled assembly of aromatic glutamic dendrimers for efficient luminescent color conversion
title_sort solvent-controlled assembly of aromatic glutamic dendrimers for efficient luminescent color conversion
publishDate 2020
url https://hdl.handle.net/10356/142965
_version_ 1681056311775592448