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两性亚聚合物合体球体的光诱导变形

Yaobang Li1, Yaning He, Xiaolan Tong

  • 1Department of Chemical Engineering, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, P.R. China.

Journal of the American Chemical Society
|February 24, 2005
PubMed
概括

研究人员在两性亚聚合物合体球体中证明了光诱导的形状变形. 暴露在光线下将球体转化为各种长长的形状,可通过照射时间控制.

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Aryldiazonium Salts to Azo Dyes: Diazo Coupling01:11

Aryldiazonium Salts to Azo Dyes: Diazo Coupling

The reaction of weakly electrophilic aryldiazonium (also called arenediazonium) salts with highly activated aromatic compounds leads to the formation of products with an —N=N— link, called an azo linkage. This reaction, presented in Figure 1, is known as diazo coupling and occurs without the loss of the nitrogen atoms of the aryldiazonium salt. Highly activated aromatic compounds such as phenols or arylamines favor the diazo coupling reaction. The coupling generally occurs at the para position.