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Updated: Feb 3, 2026

Bridging the Bio-Electronic Interface with Biofabrication
Published on: June 6, 2012
Photoinduced electron transfer and remarkable enhancement of magnetic susceptibility in bridging pyrazine complexes
Bin Xia1, Yu Zhou, Qing-Lun Wang
1College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300071, P. R. China. wangql@nankai.edu.cn.
Abstract:
Three isostructural coordination polymers of the formula [MCl2(DMSO)2(pz)]n (pz = pyrazine, DMSO = dimethyl sulfoxide, M = Mn, Fe and Co for 1-3) were synthesized through the solvothermal reaction of MCl2, DMSO and pz. By introducing DMSO and chloride as electron donor ligands and pz as an accepter, a donor-metal-accepter (D-M-A) system was constructed. Radicals generated by photoinduced electron transfer (PET) from a donor to an accepter result in a dramatic change of vibronic absorption spectra in UV regions and remarkable enhancement of magnetic susceptibility. The mechanism of PET was also determined by PXRD, IR, EPR and XPS measurements. This is the first example of bridging pz complexes which exhibit both photochromism and photomagnetism in a PET process.
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