EPR probes with well-defined, long distances between two or three unpaired electrons

被引：61

作者：

Godt, A ^{[1
]}

Franzen, C ^{[1
]}

Veit, S ^{[1
]}

Enkelmann, V ^{[1
]}

Pannier, M ^{[1
]}

Jeschke, G ^{[1
]}

机构：

[1] Max Planck Inst Polymer Res, D-55128 Mainz, Germany

来源：

JOURNAL OF ORGANIC CHEMISTRY | 2000年 / 65卷 / 22期

关键词：

D O I：

10.1021/jo005556j

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The synthesis of rod- and star-shaped compounds carrying two or three spin labels as end groups is described. The unpaired electrons are 2.8-5.1 nm apart from each other. The shape-persistent scaffolds were obtained through Pd-Cu-catalyzed alkynyl-aryl coupling and Pd-Cu-catalyzed alkyne dimerization in the presence of oxygen using p-phenyleneethynylene as the basic shape-persistent building block. The spin label 1-oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylic acid (4) was attached through esterification of the terminal phenolic OH groups of the scaffold.

引用

页码：7575 / 7582

页数：8

共 64 条

[1]

BERLINER LJ, 1979, SPIN LABELING, V2

[2] IMPROVEMENTS IN THE SYNTHESIS OF PHENYLACETYLENE MONODENDRONS INCLUDING A SOLID-PHASE CONVERGENT METHOD [J].