Solar-driven interfacial evaporation is a promising technology for desalination.The photothermal conversion materials are at the core and play a key role in thisfield.Design of photothermal conversion materials based ...Solar-driven interfacial evaporation is a promising technology for desalination.The photothermal conversion materials are at the core and play a key role in thisfield.Design of photothermal conversion materials based on organic dyes for desalina-tion is still a challenge due to lack of efficient guiding strategy.Herein,a new D(donor)-A(acceptor)type conjugated tetraphenylpyrazine(TPP)luminophore(namely TPP-2IND)was prepared as a photothermal conversion molecule.It exhib-ited a broad absorption spectrum and strongπ–πstacking in the solid state,resulting in efficient sunlight harvesting and boosting nonradiative decay.TPP-2IND powder exhibited high photothermal efficiency upon 660 nm laser irradiation(0.9 W cm^(-2)),and the surface temperature can reach to 200℃.Then,an interfacial heating system based on TPP-2IND is established successfully.The water evaporation rate and the solar-driven water evaporation efficiency were evaluated up to 1.04 kg m^(-2) h^(-1) and 65.8%under 1 sunlight,respectively.Thus,this novel solar-driven heating system shows high potential for desalination and stimulates the development of advanced photothermal conversion materials.展开更多
Enantioselective recognition and separation are the most important issues in the fields of chemistry,pharmacy,agrochemical,and food science.Here,we developed two optically active diamines showing aggregation-induced e...Enantioselective recognition and separation are the most important issues in the fields of chemistry,pharmacy,agrochemical,and food science.Here,we developed two optically active diamines showing aggregation-induced emission(AIE)that can discriminate 5 kinds of chiral acids with high enantioselectivity.Especially,a very high fluorescence intensity ratio(IL/ID)of 281 for(±)-Dibenzoyl-D/L-tartaric acid was obtained through the collection of fluorescence change after interaction with chiral AIE-active diamine.By virtue of AIE property and intermolecular acidbase interaction,enantioselective separation was facilely realized by simple filtration of the precipitates formed by chiral AIE luminogen(AIEgen)and one enantiomer in the racemic solution.The chiral HPLC data indicated that the precipitates of AIEgen/chiral acid possessed 82%L-analyte(the enantiomeric excess value was assessed to be 64%ee).Therefore,this method can serve as a simple,convenient,and low-cost tool for chiral detection and separation.展开更多
基金National Natural Science Foundation of China,Grant/Award Numbers:52173152,21805002The Fund of the Rising Stars of Shaanxi Province,Grant/Award Number:2021KJXX-48+5 种基金The Natural Science Basic Research Plan in Shaanxi Province of China,Grant/Award Number:2023-JC-QN-0163Young Talent Fund of University Association for Science and Technology in Shaanxi,China,Grant/Award Numbers:20190610,20210606Research Foundation of Education Department of Shaanxi Province,Grant/Award Number:21JK0487Scientific and Technological Innovation Team of Shaanxi Province,Grant/Award Number:2022TD-36Basic and Applied Basic Research Foundation of Guangdong Province,Grant/Award Number:2020A1515110476College Students’Innovative Entrepreneurial Training Plan Program of Baoji University of Arts and Sciences,Grant/Award Number:S202210721040。
文摘Solar-driven interfacial evaporation is a promising technology for desalination.The photothermal conversion materials are at the core and play a key role in thisfield.Design of photothermal conversion materials based on organic dyes for desalina-tion is still a challenge due to lack of efficient guiding strategy.Herein,a new D(donor)-A(acceptor)type conjugated tetraphenylpyrazine(TPP)luminophore(namely TPP-2IND)was prepared as a photothermal conversion molecule.It exhib-ited a broad absorption spectrum and strongπ–πstacking in the solid state,resulting in efficient sunlight harvesting and boosting nonradiative decay.TPP-2IND powder exhibited high photothermal efficiency upon 660 nm laser irradiation(0.9 W cm^(-2)),and the surface temperature can reach to 200℃.Then,an interfacial heating system based on TPP-2IND is established successfully.The water evaporation rate and the solar-driven water evaporation efficiency were evaluated up to 1.04 kg m^(-2) h^(-1) and 65.8%under 1 sunlight,respectively.Thus,this novel solar-driven heating system shows high potential for desalination and stimulates the development of advanced photothermal conversion materials.
基金National Natural Science Foundation of China,Grant/Award Numbers:52173152,21805002Guangdong Basic and Applied Basic Research Foundation,Grant/Award Number:2020A1515110476+4 种基金Fund of the Rising Stars of Shaanxi Province,Grant/Award Number:2021KJXX-48Natural Science Basic Research Plan in Shaanxi Province of China,Grant/Award Numbers:2019JQ-302,2021JQ-801Research Foundation of Education Department of Shaanxi Province,Grant/Award Number:20JS005Young Talent fund of University Association for Science and Technology in Shaanxi,China,Grant/Award Numbers:20190610,20210606Scientific and Technological Innovation Team of Shaanxi Province,Grant/Award Number:2022TD-36。
文摘Enantioselective recognition and separation are the most important issues in the fields of chemistry,pharmacy,agrochemical,and food science.Here,we developed two optically active diamines showing aggregation-induced emission(AIE)that can discriminate 5 kinds of chiral acids with high enantioselectivity.Especially,a very high fluorescence intensity ratio(IL/ID)of 281 for(±)-Dibenzoyl-D/L-tartaric acid was obtained through the collection of fluorescence change after interaction with chiral AIE-active diamine.By virtue of AIE property and intermolecular acidbase interaction,enantioselective separation was facilely realized by simple filtration of the precipitates formed by chiral AIE luminogen(AIEgen)and one enantiomer in the racemic solution.The chiral HPLC data indicated that the precipitates of AIEgen/chiral acid possessed 82%L-analyte(the enantiomeric excess value was assessed to be 64%ee).Therefore,this method can serve as a simple,convenient,and low-cost tool for chiral detection and separation.
