Understanding of the role of supramolecular chirality for tuning material optoelectronic properties has been restricted by the limited number of cases. A particular challenge is to impose supramolecular chirality onto...Understanding of the role of supramolecular chirality for tuning material optoelectronic properties has been restricted by the limited number of cases. A particular challenge is to impose supramolecular chirality onto multicolor luminescent systems that can emit in aggregation state. Here we present a self- assembly strategy from a well-selected asterisk molecule for generating supramolecular chirality with fluorescence-phosphorescence dual emission. The work takes advantages of （1） achiral chemical structure dependent peculiar self-assembly that can spontaneously undergo symmetry breaking to produce macrochirality, and （2） the assembly process can be monitored by time which due to the crystallization-driven self-assembly by self-twisting, allowing a self-progressing chiral amplification. A multicolor luminescence induced by the fluorescence-phosphorescence dual emission along with such a self-assembly behavior was also observed at a single solution system versus the time. The self-twisting chiral self-assembly fashion provides new prospects for understanding the establishment of nanochirality from achiral molecular building blocks.展开更多
Organic fluorescence-phosphorescence dual-emitting materials based on tunable single chromophores have attracted much attention for their broad application prospects in information technology,display media and other f...Organic fluorescence-phosphorescence dual-emitting materials based on tunable single chromophores have attracted much attention for their broad application prospects in information technology,display media and other fields due to their high luminescence stability,simple preparation process and excellent reproducibility.Herein,we constructed a novel LP-activated fluorescence-phosphorescence dual-lightharvesting(FPRET)supramolecular assembly based on LP with orthogonal charges,the phosphorescent molecule G and the NIR dye NIB through a supramolecular non-covalent strategy.The energy transfer efficiency of fluorescence is 54.68%when the molar ratio of G/LP to NIB is 10:1,while the energy transfer efficiency and antenna effect of phosphorescence are 48.75%and 241.43 respectively when the molar ratio of G/LP to NIB is 50:1.In addition,by co-assembling with carbon dots(CDs)and adjusting the ratio of donor to acceptor components,the full-color spectral regulation including white light(CIE chromaticity coordinates x,y=0.31,0.33)was realized.Utilizing this LP to promote the supramolecular full-color FPRET assembly of single fluorophore G and showing the multi-level anti-counterfeiting of intelligent logic gates through pattern,time,and color editing,it provides a new insight and direction for the development of a new generation of high-performance optical functional materials.展开更多
基金supported by 2017 Natural Science Foundation of Shanghai (No. 17ZR1402400)National Program for Thousand Young Talents of China+2 种基金the Shanghai Pujiang Program (No. 15PJ1402600)the Natural Science Foundation of Shanghai (No. 17ZR1447100)the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning
文摘Understanding of the role of supramolecular chirality for tuning material optoelectronic properties has been restricted by the limited number of cases. A particular challenge is to impose supramolecular chirality onto multicolor luminescent systems that can emit in aggregation state. Here we present a self- assembly strategy from a well-selected asterisk molecule for generating supramolecular chirality with fluorescence-phosphorescence dual emission. The work takes advantages of （1） achiral chemical structure dependent peculiar self-assembly that can spontaneously undergo symmetry breaking to produce macrochirality, and （2） the assembly process can be monitored by time which due to the crystallization-driven self-assembly by self-twisting, allowing a self-progressing chiral amplification. A multicolor luminescence induced by the fluorescence-phosphorescence dual emission along with such a self-assembly behavior was also observed at a single solution system versus the time. The self-twisting chiral self-assembly fashion provides new prospects for understanding the establishment of nanochirality from achiral molecular building blocks.
基金supported by the National Natural Science Foundation of China(Nos.22361036,22571173)the China Postdoctoral Science Foundation(No.2021M691661)+2 种基金Natural Science Foundation of Tianjin(No.22JCYBJC00500)the Program for Youth Science and Technology Leading Talent of Inner Mongolia(No.GXKY25Z045)Inner Mongolia Natural Science Excellent Youth Foundation(No.2025YQ050)。
文摘Organic fluorescence-phosphorescence dual-emitting materials based on tunable single chromophores have attracted much attention for their broad application prospects in information technology,display media and other fields due to their high luminescence stability,simple preparation process and excellent reproducibility.Herein,we constructed a novel LP-activated fluorescence-phosphorescence dual-lightharvesting(FPRET)supramolecular assembly based on LP with orthogonal charges,the phosphorescent molecule G and the NIR dye NIB through a supramolecular non-covalent strategy.The energy transfer efficiency of fluorescence is 54.68%when the molar ratio of G/LP to NIB is 10:1,while the energy transfer efficiency and antenna effect of phosphorescence are 48.75%and 241.43 respectively when the molar ratio of G/LP to NIB is 50:1.In addition,by co-assembling with carbon dots(CDs)and adjusting the ratio of donor to acceptor components,the full-color spectral regulation including white light(CIE chromaticity coordinates x,y=0.31,0.33)was realized.Utilizing this LP to promote the supramolecular full-color FPRET assembly of single fluorophore G and showing the multi-level anti-counterfeiting of intelligent logic gates through pattern,time,and color editing,it provides a new insight and direction for the development of a new generation of high-performance optical functional materials.
