Size recognition of external molecules on polymer brushes using aggregation-induced emission

Aggregation-induced emission (AIE)-driven fluorescent polymer brushes, i.e., poly(4-(1,2,2-triphenylvinyl)phenyl methacrylate) (PTPMA) brushes, were fabricated in a patterned manner with different graft-density domains. The obtained patterned brushes served as a molecular size analyzer; namely, the...

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Main Authors: Sim, Xuan Ming, Wu, Xiaolu, Goto, Atsushi
Other Authors: School of Chemistry, Chemical Engineering and Biotechnology
Format: Article
Language:English
Published: 2023
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Online Access:https://hdl.handle.net/10356/171332
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1713322024-04-23T04:42:00Z Size recognition of external molecules on polymer brushes using aggregation-induced emission Sim, Xuan Ming Wu, Xiaolu Goto, Atsushi School of Chemistry, Chemical Engineering and Biotechnology Chemistry Polymer brush Size recognition Aggregation-induced emission (AIE)-driven fluorescent polymer brushes, i.e., poly(4-(1,2,2-triphenylvinyl)phenyl methacrylate) (PTPMA) brushes, were fabricated in a patterned manner with different graft-density domains. The obtained patterned brushes served as a molecular size analyzer; namely, the sizes of external molecules were recognized via the changes in the fluorescence intensities of the polymer brushes. Small-size external molecules were able to enter the polymer brush layers, inducing the fluorescent side groups in the brush chains to aggregate and enhancing the fluorescence intensity via AIE. On the other hand, large-size external molecules were unable to enter the polymer brush layer, resulting in no significant change in the fluorescence intensity. The size exclusion (molecular weight) threshold of external molecules depends on the graft density. As a demonstration, the present work distinguished external molecules with molecular weights of 300 and 1000 via the change in the fluorescence intensity of the brushes with different graft densities. The present patterning technique can tune the graft density in a wide range and hence may offer patterned brushes with a wide range of analyzable molecular sizes. National Research Foundation (NRF) Submitted/Accepted version This work was supported by National Research Foundation (NRF) Investigatorship in Singapore (NRF-NRFI05-2019-0001). 2023-10-19T03:15:09Z 2023-10-19T03:15:09Z 2023 Journal Article Sim, X. M., Wu, X. & Goto, A. (2023). Size recognition of external molecules on polymer brushes using aggregation-induced emission. ACS Applied Polymer Materials, 5(10), 8387-8395. https://dx.doi.org/10.1021/acsapm.3c01514 2637-6105 https://hdl.handle.net/10356/171332 10.1021/acsapm.3c01514 2-s2.0-85171875802 10 5 8387 8395 en NRF-NRFI05-2019-0001 ACS Applied Polymer Materials © 2023 American Chemical Society. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the copyright holder. The Version of Record is available online at http://doi.org/10.1021/acsapm.3c01514. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Chemistry
Polymer brush
Size recognition
spellingShingle Chemistry
Polymer brush
Size recognition
Sim, Xuan Ming
Wu, Xiaolu
Goto, Atsushi
Size recognition of external molecules on polymer brushes using aggregation-induced emission
description Aggregation-induced emission (AIE)-driven fluorescent polymer brushes, i.e., poly(4-(1,2,2-triphenylvinyl)phenyl methacrylate) (PTPMA) brushes, were fabricated in a patterned manner with different graft-density domains. The obtained patterned brushes served as a molecular size analyzer; namely, the sizes of external molecules were recognized via the changes in the fluorescence intensities of the polymer brushes. Small-size external molecules were able to enter the polymer brush layers, inducing the fluorescent side groups in the brush chains to aggregate and enhancing the fluorescence intensity via AIE. On the other hand, large-size external molecules were unable to enter the polymer brush layer, resulting in no significant change in the fluorescence intensity. The size exclusion (molecular weight) threshold of external molecules depends on the graft density. As a demonstration, the present work distinguished external molecules with molecular weights of 300 and 1000 via the change in the fluorescence intensity of the brushes with different graft densities. The present patterning technique can tune the graft density in a wide range and hence may offer patterned brushes with a wide range of analyzable molecular sizes.
author2 School of Chemistry, Chemical Engineering and Biotechnology
author_facet School of Chemistry, Chemical Engineering and Biotechnology
Sim, Xuan Ming
Wu, Xiaolu
Goto, Atsushi
format Article
author Sim, Xuan Ming
Wu, Xiaolu
Goto, Atsushi
author_sort Sim, Xuan Ming
title Size recognition of external molecules on polymer brushes using aggregation-induced emission
title_short Size recognition of external molecules on polymer brushes using aggregation-induced emission
title_full Size recognition of external molecules on polymer brushes using aggregation-induced emission
title_fullStr Size recognition of external molecules on polymer brushes using aggregation-induced emission
title_full_unstemmed Size recognition of external molecules on polymer brushes using aggregation-induced emission
title_sort size recognition of external molecules on polymer brushes using aggregation-induced emission
publishDate 2023
url https://hdl.handle.net/10356/171332
_version_ 1800916131802775552