Chiral photochemistry appears to be a highly challenging topic and still very much in its infancy, especially if comparing to its well-developed thermochemical counterpart.Significant efforts have been devoted in orde...Chiral photochemistry appears to be a highly challenging topic and still very much in its infancy, especially if comparing to its well-developed thermochemical counterpart.Significant efforts have been devoted in order to improve stereoselectivity of chiral photoreactions,among which,the supramolecular strategy proven the most promising.The present review,motivated by the rapid progress in the supramolecular chiral photochemistry,concentrates on advancements achieved mainly in the last decade.The features and advantages of supramolecular chiral photochemistry are exemplified by representative photoreactions in terms of the chiral hosts/assemblies.展开更多
Photoirradiation of anthraquinone(AQ)derivatives withγ-cyclodextrin(γ-CD)in aqueous solution led to aγ-CD derivative with a 9,10-dihydroxylanthracene grafting unprecedentedly at the 5′-position of one glucoside of...Photoirradiation of anthraquinone(AQ)derivatives withγ-cyclodextrin(γ-CD)in aqueous solution led to aγ-CD derivative with a 9,10-dihydroxylanthracene grafting unprecedentedly at the 5′-position of one glucoside ofγ-CD in high efficiency.Meanwhile,another AQ enters into the remaining space of the 9,10-dihydroxylanthracene-occupiedγ-CD cavity to in-situ form a selfincluded quinhydrone charge transfer(CT)complex.The structure of the supramolecular CT complex was unambiguously demonstrated by 1 D and 2 D NMR(^(1)H NMR,^(13)C NMR,DEPT,^(1)H-^(1)H COSY,HSQC,HMBC,TOCSY,and ROESY)spectroscopies,which revealed a highly stereoselective stacking of the quinhydrone pairs in theγ-CD cavity.The supramolecular CT complex showed an unusually high binding affinity and improved oxidation resistance.Polyacrylamides bearingγ-CD or anthraquinone were respectively synthesized by co-polymerization of acrylamide with the corresponding monomer.Photoirradiation of aqueous mixtures containing these two types of polymers led to gelation,which was applied to 3 D photo-printing of soft materials.展开更多
文摘Chiral photochemistry appears to be a highly challenging topic and still very much in its infancy, especially if comparing to its well-developed thermochemical counterpart.Significant efforts have been devoted in order to improve stereoselectivity of chiral photoreactions,among which,the supramolecular strategy proven the most promising.The present review,motivated by the rapid progress in the supramolecular chiral photochemistry,concentrates on advancements achieved mainly in the last decade.The features and advantages of supramolecular chiral photochemistry are exemplified by representative photoreactions in terms of the chiral hosts/assemblies.
基金supported by the National Natural Science Foundation of China (92056116, 21871194, 22191194, 21971169)the National Key Research and Development Program of China(2017YFA0505903)+1 种基金the Science&Technology Department of Sichuan Province (2021ZYD0052, 2022YFH0095)the Fundamental Research Funds for the Central Universities (20826041D4117)。
文摘Photoirradiation of anthraquinone(AQ)derivatives withγ-cyclodextrin(γ-CD)in aqueous solution led to aγ-CD derivative with a 9,10-dihydroxylanthracene grafting unprecedentedly at the 5′-position of one glucoside ofγ-CD in high efficiency.Meanwhile,another AQ enters into the remaining space of the 9,10-dihydroxylanthracene-occupiedγ-CD cavity to in-situ form a selfincluded quinhydrone charge transfer(CT)complex.The structure of the supramolecular CT complex was unambiguously demonstrated by 1 D and 2 D NMR(^(1)H NMR,^(13)C NMR,DEPT,^(1)H-^(1)H COSY,HSQC,HMBC,TOCSY,and ROESY)spectroscopies,which revealed a highly stereoselective stacking of the quinhydrone pairs in theγ-CD cavity.The supramolecular CT complex showed an unusually high binding affinity and improved oxidation resistance.Polyacrylamides bearingγ-CD or anthraquinone were respectively synthesized by co-polymerization of acrylamide with the corresponding monomer.Photoirradiation of aqueous mixtures containing these two types of polymers led to gelation,which was applied to 3 D photo-printing of soft materials.
