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

A Godt, C Franzen, S Veit, V Enkelmann…

Index: Godt; Franzen; Veit; Enkelmann; Pannier; Jeschke Journal of Organic Chemistry, 2000 , vol. 65, # 22 p. 7575 - 7582

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Citation Number: 64

Abstract

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- ...