Circularly polarized luminescence(CPL)and two-photon absorption(TPA)materials have garnered considerable attentions due to their minimal energy loss and superior optical penetration[1,2].However,the current challenge ...Circularly polarized luminescence(CPL)and two-photon absorption(TPA)materials have garnered considerable attentions due to their minimal energy loss and superior optical penetration[1,2].However,the current challenge lies in the absence of well-developed strategies for designing materials that combine these two exceptional optical properties.展开更多
Recently circularly polarized luminescence(CPL)materials have attracted significant interest.Introducing reversible dynamic property to these materials has been a key focus in cutting-edge fields,such as in high-level...Recently circularly polarized luminescence(CPL)materials have attracted significant interest.Introducing reversible dynamic property to these materials has been a key focus in cutting-edge fields,such as in high-level information encryption.Here,we provided a novel and general strategy involving handednessselective filtration and ground-state chiral self-recovery(CSR)in double film system to address this issue.Based on this strategy,we achieved CPL switch through the reversible modulation of ground-state chirality including absorption and scattering circular dichroism(CD)signals over the full UV-visible wavelength range(365-700 nm)in a single azobenzene polymer(PAzo)film.More importantly,by flexibly changing the type of fluorescent films,it is convenient to achieve general excited-state CSR,that is reversible switching of full-color including ideal white(CIE coordinate(0.33,0.33)),as well as room-temperature phosphorescent CPL.All these CPL signals without almost any intensity decay after three cycles of onand-off switching.Experimental results indicated that the trans-cis isomerization and ordered rearrangement of azobenzene units in PAzo film were the fundamental reasons for realizing CPL switching.Finally,based on this system we achieved dynamic visual encryption and decryption process including multiple decryption methods.This study provides an effective method for constructing a universally applicable chiroptical switch in excited state.展开更多
A series of[1,1-binaphthalene]-2,2-diol-pyrene(BINOL-Py)functionalized pillar[5]arenes with different spacer lengths were synthesized and separated by chiral HPLC to obtain their enantiomers.We elucidated the synergis...A series of[1,1-binaphthalene]-2,2-diol-pyrene(BINOL-Py)functionalized pillar[5]arenes with different spacer lengths were synthesized and separated by chiral HPLC to obtain their enantiomers.We elucidated the synergistic effect of the planar chirality of pillar[5]arenes and axial chirality of BINOL on the circularly polarized luminescence(CPL)behaviors of hybrid chiral BINOL-Py functionalized pillar[5]arenes,achieving high glumup to 1.7×10^(-2).In addition,ascribed to the regulation of chirality information transmission through planar chirality of pillar[5]arenes,the resolved BINOL-Py functionalized pillar[5]arenes reveal unique tunable circular dichroism(CD)and CPL in different aggregation state and upon the addition of vip,providing not only a novel design strategy for developing molecular systems with chiroptical tunability but also an intriguing platform for the construction of CPL luminescent materials based on chiral macrocycles.展开更多
基金supported by NSFC(22271282)the Self-deployment Project Research Program of Haixi Institutes,Chinese Academy of Sciences with the grant number of CXZX-2022-JQ04.
文摘Circularly polarized luminescence(CPL)and two-photon absorption(TPA)materials have garnered considerable attentions due to their minimal energy loss and superior optical penetration[1,2].However,the current challenge lies in the absence of well-developed strategies for designing materials that combine these two exceptional optical properties.
基金the financial support from the National Natural Science Foundation of China(Nos.22301206,92356305 and 22301208)Natural Science Foundation of Anhui Province(No.2308085J15)+5 种基金Natural Science Foundation of Anhui Provincial Higher Education Institutions(No.2023AH010012)China Post-doctoral Science Foundation(No.2022M722312)the Key Laboratory of Polymeric Material Design and Synthesis for Biomedical Functionthe Priority Academic Program Development(PAPD)of Jiangsu Higher Education InstitutionsJiangsu Funding Program for Excellent Postdoctoral Talentthe Program of Innovative Research Team of Soochow University。
文摘Recently circularly polarized luminescence(CPL)materials have attracted significant interest.Introducing reversible dynamic property to these materials has been a key focus in cutting-edge fields,such as in high-level information encryption.Here,we provided a novel and general strategy involving handednessselective filtration and ground-state chiral self-recovery(CSR)in double film system to address this issue.Based on this strategy,we achieved CPL switch through the reversible modulation of ground-state chirality including absorption and scattering circular dichroism(CD)signals over the full UV-visible wavelength range(365-700 nm)in a single azobenzene polymer(PAzo)film.More importantly,by flexibly changing the type of fluorescent films,it is convenient to achieve general excited-state CSR,that is reversible switching of full-color including ideal white(CIE coordinate(0.33,0.33)),as well as room-temperature phosphorescent CPL.All these CPL signals without almost any intensity decay after three cycles of onand-off switching.Experimental results indicated that the trans-cis isomerization and ordered rearrangement of azobenzene units in PAzo film were the fundamental reasons for realizing CPL switching.Finally,based on this system we achieved dynamic visual encryption and decryption process including multiple decryption methods.This study provides an effective method for constructing a universally applicable chiroptical switch in excited state.
基金by the National Natural Science Foundation of China(Nos.22371055,22201194 and 22001046)the Guangxi Natural Science Foundation(No.2021GXNSFBA196053)+1 种基金the Science&Technology Department of Sichuan Province(No.2024NSFSC1117)the Guangxi Medical University Training Program for Distinguished Young Scholars。
文摘A series of[1,1-binaphthalene]-2,2-diol-pyrene(BINOL-Py)functionalized pillar[5]arenes with different spacer lengths were synthesized and separated by chiral HPLC to obtain their enantiomers.We elucidated the synergistic effect of the planar chirality of pillar[5]arenes and axial chirality of BINOL on the circularly polarized luminescence(CPL)behaviors of hybrid chiral BINOL-Py functionalized pillar[5]arenes,achieving high glumup to 1.7×10^(-2).In addition,ascribed to the regulation of chirality information transmission through planar chirality of pillar[5]arenes,the resolved BINOL-Py functionalized pillar[5]arenes reveal unique tunable circular dichroism(CD)and CPL in different aggregation state and upon the addition of vip,providing not only a novel design strategy for developing molecular systems with chiroptical tunability but also an intriguing platform for the construction of CPL luminescent materials based on chiral macrocycles.
