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AMPHIPHILIC COMB-SHAPED DIBLOCK POLYMER BRUSHES ONSi(100)SUBSTRATES VIA SURFACE-INITIATED ATOM TRANSFER RADICAL POLYMERIZATION

Author

Listed:
  • JIN-WEN PENG

    (Institute of Advanced Materials (IAM), Fudan University, 220 Handan Road, Shanghai 200433, P. R. China)

  • WEI HUANG

    (Institute of Advanced Materials (IAM), Fudan University, 220 Handan Road, Shanghai 200433, P. R. China)

  • EN-TANG KANG

    (Department of Chemical and Biomolecular Engineering, National University of Singapore, Kent Ridge, Singapore 119260, Singapore)

  • KOON GEE NEOH

    (Department of Chemical and Biomolecular Engineering, National University of Singapore, Kent Ridge, Singapore 119260, Singapore)

Abstract

Amphiphilic comb-shaped 2-hydroxyethyl methacrylate-graft-poly(styrene)-block-poly(poly (ethylene glycol) monomethacrylate)(P(HEMA)–g–PS–b–P(PEGMA))copolymer brushes, covalently tethered onSi(100)substrate, have been successfully prepared by (i) UV-induced hydrosilylation of 4-vinylbenzyl chloride (VBC) with the hydrogen-terminatedSi(100)(Si–VBCsurface), (ii) surface-initiated atom transfer radical polymerization (ATRP) of 2-hydroxyethyl methacrylate (HEMA) to give theSi–VBC–g–P(HEMA)surface, (iii) coupling of 2-bromoisobutyryl bromide with the HEMA units via esterification to provide the comb-shaped macroinitiators(Si–VBC–g–P(HEMA)–R3Br)for the subsequent ATRP, (iv) surface-initiated ATRP of styrene (St) to produce theSi–VBC–g–P(HEMA)–g–PSsurface, and (v) the persisting of an active PS chain end can be used as the initiator for the subsequent ATRP of poly(ethylene glycol) monomethacrylate (PEGMA) to give the amphiphilicSi–VBC–g–P(HEMA)–g–PS–b–P(PEGMA)brush surface. The chemical composition and functionality of the silicon surface were tailored by the well-defined comb-shaped PS and P (PEGMA) brushes.

Suggested Citation

  • Jin-Wen Peng & Wei Huang & En-Tang Kang & Koon Gee Neoh, 2006. "AMPHIPHILIC COMB-SHAPED DIBLOCK POLYMER BRUSHES ONSi(100)SUBSTRATES VIA SURFACE-INITIATED ATOM TRANSFER RADICAL POLYMERIZATION," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 13(02n03), pages 251-257.
    • Handle: RePEc:wsi:srlxxx:v:13:y:2006:i:02n03:n:s0218625x06008086
    DOI: 10.1142/S0218625X06008086
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