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Producing circularly polarized luminescence by radiative energy transfer from achiral metal-organic cage to chiral organic molecules
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作者 Zhao-Xia lian Xue-Zhi Wang +4 位作者 Chuang-Wei Zhou Jiayu li ming-de li Xiao-Ping Zhou Dan li 《Chinese Chemical Letters》 SCIE CAS CSCD 2024年第8期498-502,共5页
The development of circularly polarized luminescence(CPL)materials with high performance is signifi-cantly important.Herein,we develop a facial strategy for fabricating a CPL-active system by employing an achiral lumi... The development of circularly polarized luminescence(CPL)materials with high performance is signifi-cantly important.Herein,we develop a facial strategy for fabricating a CPL-active system by employing an achiral luminescent metal-organic cage(MOC)and chiral boron dipyrromethene(BODIPY)molecules.CPL is achieved by taking advantage of the radiative energy transfer process,in which BODIPY molecules act as energy acceptors and MOCs act as donors.The CPL performance(maximum luminescence dissymme-try factor up to±1.5×10^(−3))can be tuned by adjusting the ratio between MOCs and BODIPY.White-light emission with the CPL feature is obtained by using a ternary system including MOC,chiral BODIPY,and Rhodamine B.The present work provides a facile and universal strategy to construct a CPL-active system by integrating achiral luminophores and chiral molecules. 展开更多
关键词 Circularly polarized luminescence Metal-organic cage Radiative energy transfer Chiral small molecules Bodipy CHIRALITY
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A strained π-extended[10]cycloparaphenylene carbon nanoring
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作者 Kang Wei Jiayu li +3 位作者 Wen Zhang Bing Yuan ming-de li Pingwu Du 《Chinese Chemical Letters》 SCIE CAS CSCD 2024年第5期171-174,共4页
Herein,we report the facile synthesis of a highly strained hexabenzocoronene-containing carbon nanoring,cyclo[4]-paraphenylene[2]-2,11-hexabenzocoronenylene([4,2]CPHBC),as the segment of a[10,10]single-walled carbon n... Herein,we report the facile synthesis of a highly strained hexabenzocoronene-containing carbon nanoring,cyclo[4]-paraphenylene[2]-2,11-hexabenzocoronenylene([4,2]CPHBC),as the segment of a[10,10]single-walled carbon nanotube([10,10]SWNT).[4,2]CPHBC was synthesized based on the platinummediated assembly of diborylbiphenyl and diborylhexabenzocoronene,forming a tetranuclear platinum complex,followed by reductive elimination.This nanoring molecule was confirmed by NMR and HRMS,and its photophysical properties were studied using steady-state and time-resolved spectroscopies.Moreover,the selective supramolecular host-guest interaction between[4,2]CPHBC and C_(60) was also investigated. 展开更多
关键词 CPP HEXABENZOCORONENE FULLERENE Supramolecular chemistry
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Effect of ketyl radical on the structure and performance of holographic polymer/liquid-crystal composites 被引量:3
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作者 Xiaoyu Zhao Shanshan Sun +5 位作者 Ye Zhao Rong-Zhen liao ming-de li Yonggui liao Haiyan Peng Xiaolin Xie 《Science China Materials》 SCIE EI CSCD 2019年第12期1921-1933,共13页
Holographic polymer/liquid-crystal composites,which are periodically ordered materials with alternative polymer-rich and liquid-crystal-rich phases, have drawn increasing interest due to their unique capabilities of r... Holographic polymer/liquid-crystal composites,which are periodically ordered materials with alternative polymer-rich and liquid-crystal-rich phases, have drawn increasing interest due to their unique capabilities of reconstructing colored three-dimensional(3 D) images and enabling the electro-optic response. They are formed via photopolymerization induced phase separation upon exposure to laser interference patterns, where a fast photopolymerization is required to facilitate the holographic patterning. Yet, the fast photopolymerization generally leads to depressed phase separation and it remains challenging to boost the holographic performance via kinetics control.Herein, we disclose that the ketyl radical inhibition is able to significantly boost the phase separation and holographic performance by preventing the proliferated diffusion of initiating radicals from the constructive to the destructive regions. Dramatically depressed phase separation is caused when converting the inhibiting ketyl radical to a new initiating radical, indicating the significance of ketyl radical inhibition when designing high performance holographic polymer composites. 展开更多
关键词 liquid crystal ordered structures PHOTOPOLYMERIZATION INHIBITION HOLOGRAPHY
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Single-Component MLCT-Active Photodetecting Material Based on a Two-Dimensional Coordination Polymer
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作者 Qing-Qing Huang Yan-Zhou li +8 位作者 Zhi Zheng Xiao-Ming Jiang Shan-Shan Sun Hui-Jie Jiang Wei-Hua Deng Guan-E Wang Tian-You Zhai ming-de li Gang Xu 《CCS Chemistry》 CAS 2020年第1期655-662,共8页
Conductive coordination polymers(CCPs)have shown great potential for electronic purposes.However,their applications in photodetection have been limited by poor sensitivity,low on/off current ratio,and slow response ow... Conductive coordination polymers(CCPs)have shown great potential for electronic purposes.However,their applications in photodetection have been limited by poor sensitivity,low on/off current ratio,and slow response owing to the low charge generation and/or separation efficiency.In this work,metal-to-ligand chargetransfer(MLCT)in PhSeAg was used to fabricate a single-component MLCT photodetecting material for the first time to solve the above challenges.The material obtained possesses ultrahigh sensitivity to weak-light intensity(0.03 mW cm^(−2)),the highest on/off ratio,and the fastest response speed than other wellknown CCPs materials tested.Our work might provide a simple but common strategy for designing high-performance CCPs composites for optoelectrical applications. 展开更多
关键词 coordination polymer metal-organic chalcogenide metal-to-ligand charge transfer semiconductor optoelectronic material
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