Singlet Oxygen Photo-Oxygenation in Water/Pluronic F-127 Hydrogels: Increased Reaction Efficiency Coupled with a Switch in Regioselectivity
作者:Axel G. Griesbeck、Johannes Uhlig、Thomas Sottmann、Lhoussaine Belkoura、Reinhard Strey
DOI:10.1002/chem.201202296
日期:2012.12.7
efficient microenvironments for photochemical reactions, as demonstrated for singlet oxygen reactions of monoalkenes. Nonpolar substrates are localized in the nanosized polymer compartment, which can be visualized by neutron scattering. The efficiency of 1O2 reactions is strongly increased for tiglate derivatives and the regioselectivity of the ene reaction of trisubstituted alkenes is completely switched
Pluronic F-127水凝胶是光化学反应的高效微环境,正如单烯烃的单线态氧反应所证明的那样。非极性基质位于纳米级聚合物隔室中,可以通过中子散射将其可视化。tiglate衍生物的1 O 2反应效率大大提高,与溶液相相比,三取代烯烃的烯反应的区域选择性完全切换,与沸石内光氧合相比,其区域选择性完全反转。