Core Cross‐Linked Micelle‐Based Nanoreactors for Efficient Photocatalysis

Chemistry - An Asian Journal - Tập 8 Số 11 - Trang 2807-2812 - 2013
Min Zheng1, Zaicheng Sun1,2,3, Zhigang Xie4,2,3, Xiabin Jing4
1State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, CAS, 3888 East Nanuhu Road, Changchun, Jilin 130033 (P. R. China)
2Zaicheng Sun, State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, CAS, 3888 East Nanuhu Road, Changchun, Jilin 130033 (P. R. China)
3Zhigang Xie, State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, CAS, 5625 Renmin Street, Changchun Jilin 130022 (P. R. China)
4State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, CAS, 5625 Renmin Street, Changchun Jilin 130022 (P. R. China)

Tóm tắt

AbstractStable nanoscale cross‐linked polymer micelles containing Ru complexes (Ru‐CMs) were prepared from monomethoxy[poly(ethylene glycol)]‐block‐poly(L‐lysine) (MPEG‐PLys) and [(bpy)2Ru(fmbpy)](PF6)2 (bpy=bipyridine, fmbpy=5‐formy‐5′‐methyl‐2,2′‐bipyridine). To stabilize the micelles, bifunctional glutaraldehyde was used as a cross‐linker to react with the free amino groups of the PLys block. After that, the Ru‐CMs showed very good stability in common solvents. The Ru‐CMs showed photocatalytic activity and selectivity in the oxidation of sulfides that were as high as those of the well‐known [Ru(bpy)3(PF6)2] complex, because the micelles were swollen in the methanol–sulfide mixture. Moreover, because of the nanoscale size of the particles and their high stability, the Ru‐CM photocatalysts can be readily recovered by ultrafiltration and reused without loss of photocatalytic activity. This work highlights the potential of using cross‐linked micelles as a platform for developing highly efficient heterogeneous photocatalysts for a number of important organic transformations.

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Thông tin xuất bản

Chemistry - An Asian Journal

Tập 8 Số 11

2807-2812

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