首页|Naphthalenyl-phenylacrylonitrile-based supramolecular aqueous artificial light-harvesting system for photochemical catalysis
Naphthalenyl-phenylacrylonitrile-based supramolecular aqueous artificial light-harvesting system for photochemical catalysis
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NSTL
Highly efficient aqueous artificial-light-harvesting systems(ALHSs)were successfully fabricated based on the supramolecular assembly of naphthalenyl-phenylacrylonitrile derivative(NPT),water-soluble pillar [5]arene(WP5),and three kinds of pigments(4,7-di(2-thienyl)-2,l,3-benzothiadiazole(DBT),Eosin Y(ESY),and sulforhodamine-101(SR101)).The assembled ALHSs perform a high energy-transfer-efficiency(Φ_(ete))and antenna effect(90.9% and 40.6 for WP53NPT-DBT,81.5% and 39.1 for WP5dNPT-ESY as well as 71.3% and 38.4 for WP5DNPT-SR101),suggesting that the energy of WP5DNPT complex has been effectively transferred to pigment acceptors(DBT,ESY,and SR101).Notably,during the energy-transfer process of WP5DNPT-SR101 ALHS,a white light emission(Φ_(QY)= 24.21%)could be achieved by tuning the molar-ratio of [NPT]/[SR101] to 250:1,which is close to that of natural light-harvesting system,displaying a promising application in simulating natural light-harvesting system.Furthermore,the WP5DNPT-SR101 ALHS was successfully utilized as nano-reactors to catalyze the free-radical dehalogenation reactions of 2-bromo-acetophenone,2-bromo-4'-mefhyl-acetophenone,and 2-bromo-4'-nitroacetophenone with the yields of 92%,90% as well as 95%,which realized the energy transformation from solar-energy to chemical-energy,displaying a potential prospect in the field of artificial photosynthesis systems.
NSTL
