Photoinitiated polymerization of styrene from self-assembled monolayers on gold. II. Grating rates and extraction | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

6639940

Reference Type

Journal Article

Title

Photoinitiated polymerization of styrene from self-assembled monolayers on gold. II. Grating rates and extraction

Author(s)

Paul, R; Schmidt, R; Feng, JX; Dyer, DJ; ,

Year

2002

Is Peer Reviewed?

Yes

Journal

Journal of Polymer Science. Part A, Polymer Chemistry
ISSN: 0887-624X
EISSN: 1099-0518

Publisher

JOHN WILEY & SONS INC

Location

HOBOKEN

Page Numbers

3284-3291

DOI

10.1002/pola.10418

Web of Science Id

WOS:000177988600010

Abstract

Ultrathin films of polystyrene (PS) were grown from self-assembled monolayers by the "grafting-from" technique. The initiating system consisted of a dithiol azobisisobutyronitrile-type free-radical initiator that was activated by irradiation at 300 nm. The thickness of the PS films ranged from 7 to 190 nm and could be controlled by varying the reaction time or the monomer concentration. The films were characterized by ellipsometry and Fourier transform-reflection absorption infrared spectroscopy after Soxhlet extraction of residual physisorbed polymer. These films were unstable above 60 degreesC, and a water-jacketed Soxhlet extractor was designed to maintain solvent temperatures below 45 degreesC during extraction. (C) 2002 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 40: 3284-3291, 2002.