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AFM Study of the Self-Assembly Behavior of Hexa-Armed Star Polymers with a Discotic Triphenylene Core

✍ Scribed by Xiang Yu; Jun Fu; Yanchun Han; Caiyuan Pan

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
288 KB
Volume
24
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

The six‐armed polystyrenes and poly(methyl methacrylate)s with a triphenylene core showed different self‐assembling patterns, isolated cylinders for polySt on mica and highly ordered cylindrical pores for polyMMA on a silicon wafer. With a decrease of polymer concentration in tetrahydrofuran (THF), the size and height of cylinders decreased for polySt, but for polyMMA, the size and depth of the cylindrical pores increased. Slow evaporation of the solvent and a low molecular weight favored the formation of regular patterns.

AFM images of self‐assembling patterns of polySt 1a on mica (A) and of polyMMA 2a on silicon wafer (B).

magnified imageAFM images of self‐assembling patterns of polySt 1a on mica (A) and of polyMMA 2a on silicon wafer (B).

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## Abstract A self‐assembly approach to tuning the optical properties of a star copolymer is reported herein. The star copolymer HCP‐__star__‐PEG with a hyperbranched conjugated polymer (HCP) core and many linear poly(ethylene glycol) (PEG) arms has been prepared successfully. The HCP core was synt