Synthesis of photoresponsive main-chain oligomers with azobenzene moieties via ADMET oligomerization and their micellization properties

文献信息

发布日期 2017-04-10

DOI 10.1039/C7PY00426E

影响因子 5.582

作者

Clement Appiah, Georg Woltersdorf, Wolfgang H. Binder

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摘要

We report the synthesis of azobenzene functionalized linear unsaturated/saturated polyolefin-oligomers. Using mild reaction conditions and different ruthenium-based catalysts, the azobenzene moieties are precisely placed in olefin chains via acyclic diene metathesis (ADMET) reaction (Mn,SEC = 3.0 kDa–8.0 kDa). Subsequent hydrogenation reactions with p-toluenesulfonhydrazide yield the fully saturated azobenzene oligomers, which are thoroughly characterized by 1H-NMR, FTIR and liquid chromatography under critical conditions (LCCC). The obtained saturated and unsaturated azobenzene oligomers are proven to form micelles in solution, where their sizes and morphologies are characterized by DLS and TEM. As a result of photo-isomerisation from the trans to cis state, the aggregates reduce in size, which is accompanied by a visible change of the solution from turbid to clear.

期刊推荐

Medicinal Chemistry Research

Heteroatom Chemistry

Colloid Journal

Electroanalysis

Critical Reviews in Solid State and Materials Sciences

Herald of the Russian Academy of Sciences

Journal of Chemical Sciences

Journal of the Indian Institute of Science

Bioorganic & Medicinal Chemistry Letters

Cellulose

来源期刊

Polymer Chemistry

CiteScore: 8.6

自引率: 7.3%

年发文量: 457

Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.

Synthesis of photoresponsive main-chain oligomers with azobenzene moieties via ADMET oligomerization and their micellization properties

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来源期刊

Polymer Chemistry

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