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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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 |
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Chemistry Polymer brush Size recognition Sim, Xuan Ming Wu, Xiaolu Goto, Atsushi Size recognition of external molecules on polymer brushes using aggregation-induced emission |
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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. |
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School of Chemistry, Chemical Engineering and Biotechnology |
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School of Chemistry, Chemical Engineering and Biotechnology Sim, Xuan Ming Wu, Xiaolu Goto, Atsushi |
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Article |
author |
Sim, Xuan Ming Wu, Xiaolu Goto, Atsushi |
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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 |
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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 |
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2023 |
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https://hdl.handle.net/10356/171332 |
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1800916131802775552 |