Influence of Molecular Solvation on the Conformation of Star Polymers
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- 作者：Xin Li ; Lionel Porcar ; Luis E. S谩nchez-Di谩z ; Changwoo Do ; Yun Liu ; Tae-Hwan Kim ; Gregory S. Smith ; William A. Hamilton ; Kunlun Hong ; Wei-Ren Chen
- 刊名：ACS Macro Letters
- 出版年：2014
- 出版时间：May 20, 2014
- 年：2014
- 卷：3
- 期：5
- 页码：458-461
- 全文大小：257K
- 年卷期：v.3,no.5(May 20, 2014)
- ISSN：2161-1653
文摘
We have used neutron scattering to investigate the influence of concentration on the conformation of a star polymer. By varying the contrast between the solvent and the isotopically labeled stars, we obtain the distributions of polymer and solvent within a star polymer from analysis of scattering data. A correlation between the local desolvation and the inward folding of star branches is discovered. From the perspective of thermodynamics, we find an analogy between the mechanism of polymer localization driven by solvent depletion and that of the hydrophobic collapse of polymers in solutions.