Fluorescence Probe and Scanning Force Microscopic Studies of Water Soluble Comb-Shaped Copolymers Consisting of a Hydrophobic Poly(p-alkylstyrene) Main Chain and Hydrophilic Poly(ethylene oxide) Grafted Chains.
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- Kawaguchi Seigou
- Department of Materials Science, Toyohashi University of Technology
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- Maniruzzaman Mohd.
- Department of Materials Science, Toyohashi University of Technology
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- Katsuragi Kouji
- Department of Materials Science, Toyohashi University of Technology
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- Matsumoto, Iriany Haruki
- Department of Materials Science, Toyohashi University of Technology
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- Ito Koichi
- Department of Materials Science, Toyohashi University of Technology
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- Hugenberg Norbert
- Institute of Physical Chemistry, University of Mainz
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- Schmidt Manfred
- Institute of Physical Chemistry, University of Mainz
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説明
Solution properties of regular amphiphilic comb-shaped polymers have been studied in water by means of fluorescence technique using pyrene as a probe, dynamic light scattering, 1H NMR, and scanning force microscopy (SFM). They consist of a hydrophobic poly(p-alkylstyrene) as a main chain and hydrophilic poly(ethylene oxide) (PEO) chains as a graft chain. Two types of the comb-shaped polymers have been explored, which were prepared by micellar, organized homopolymerization of amphiphilic PEO macromonomers (1) (C1-EOn-(CH2)m-S, with a p-alkylstyrene ((CH2)m-S) end group, with m=1 and 7, and a PEO chain with n=18, 46, 115, and 469) and by copolymerization of C1-EO18-(CH2)7-S with styrene in water, respectively. Partitioning, I1/I3, and excimer formation of pyrene were studied for their dilute aqueous solutions, and rationalized with the local concentration and structure of the comb-shaped polymers. Hydrophobic pyrene molecules were principally dissolved into the vicinity of the hydrophobic p-heptylstyrene main chain of the comb-shaped polymers. The nature of the hydrophobic main chain of poly(styrene-co- C1-EO18-(CH2)7-S) was found to be essentially similar to that of a series of poly(C1-EOn-(CH2)m-S). Direct observation of single macromolecule of poly(C1-EO46-(CH2)7-S) by SFM revealed a high molecular weight, cylindrical brush-like conformation with ca. 12.8 nm in thickness. In contrast, small fine particles were observed for poly(styrene-co-C1-EO18-(CH2)7-S), suggesting the formation of a unimolecular micelle in water.
収録刊行物
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- Polymer Journal
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Polymer Journal 34 (4), 253-260, 2002
The Society of Polymer Science, Japan
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詳細情報 詳細情報について
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- CRID
- 1390282681265942400
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- NII論文ID
- 130004430404
- 10012291280
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- NII書誌ID
- AA00777013
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- COI
- 1:CAS:528:DC%2BD38XjsFWqurk%3D
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- ISSN
- 13490540
- 00323896
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- NDL書誌ID
- 6154704
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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