Core Cross‐Linked Micelle‐Based Nanoreactors for Efficient Photocatalysis |
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| Authors: | Dr Min Zheng Prof Dr Zaicheng Sun Prof Dr Zhigang Xie Prof Dr Xiabin Jing |
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| Institution: | 1. 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);2. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, CAS, 5625 Renmin Street, Changchun Jilin 130022 (P.?R. China) |
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| Abstract: | Stable nanoscale cross‐linked polymer micelles containing Ru complexes (Ru‐CMs) were prepared from monomethoxypoly(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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| Keywords: | micelles nanoreactors oxidation photocatalysts ruthenium |
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