Triarylboron compounds are significant optoelectronic materials due to their excellent emissive and electron-transport properties,and could be applied in organic light-emitting diodes as emissive and/or electron-trans...Triarylboron compounds are significant optoelectronic materials due to their excellent emissive and electron-transport properties,and could be applied in organic light-emitting diodes as emissive and/or electron-transport layers.Triarylboron compounds have vacant pπorbital and have received increasing interest as fluoride ion and cyanide ion sensors utilizing specific Lewis acid-base interaction.This review summarizes their structural characteristics,optical properties and applications in chemosensors for anions and optoelectronic devices developed in recent years and discusses the problems and prospects.展开更多
In this work, a near-infrared (NIR) phosphorescent probe for F- based on a cationic Ir(III) complex [Ir(Bpq)2(quqo)]PF6 (1) with dimesitylboryl (Mes2B) groups on the cyclometalated CAN ligands (Bpq) and 2-(quinolin-2-...In this work, a near-infrared (NIR) phosphorescent probe for F- based on a cationic Ir(III) complex [Ir(Bpq)2(quqo)]PF6 (1) with dimesitylboryl (Mes2B) groups on the cyclometalated CAN ligands (Bpq) and 2-(quinolin-2-yl)quinoxaline (quqo) as NAN ligand was designed and synthesized. The excited state properties of 1 were investigated in detail using molecular orbital calculations and experimental methods. Upon excitation, complex 1 shows NIR phosphorescent emission around 680 nm. Interestingly, the complex can be excited with long wavelength around 610 nm. Such long-wavelength excitation can reduce the background emission interference and improve the signal-to-noise ratio. Furthermore, the selective binding between boron atom and F- can give rise to the quenching of emission and realize the near-infrared phosphorescent sensing for F-. We wish that the results reported herein will be helpful for the further design of excellent near-infrared phosphorescent probes based on heavy-metal complexes.展开更多
基金supported by the National Basic Research Program of China(973 Program,2009CB930601)the National Natural Science Foundation of China(50803028,20804019,20774043&60976019)+6 种基金Program for New Century Excellent Talents in University(NCET-07-0446)Natural Science Foundation of Jiangsu Province of China(BK2009427)Natural Science Fund for Colleges and Universities in Jiangsu Province(08KJD430017)Scientific and Technological Innovation Teams of Colleges and Universities in Jiangsu Province(TJ207035)Scientific and Technological Activities for Returned Personnel in Nanjing City(NJ209001&TJ208027)Nanjing University of Posts and Telecommunications(NY208045&NY207161)Program for Postgraduates Research Innovation of Colleges and Universities in Jiangsu Province(CX09S_011Z)
文摘Triarylboron compounds are significant optoelectronic materials due to their excellent emissive and electron-transport properties,and could be applied in organic light-emitting diodes as emissive and/or electron-transport layers.Triarylboron compounds have vacant pπorbital and have received increasing interest as fluoride ion and cyanide ion sensors utilizing specific Lewis acid-base interaction.This review summarizes their structural characteristics,optical properties and applications in chemosensors for anions and optoelectronic devices developed in recent years and discusses the problems and prospects.
基金financially supported by the National Basic Research Program of China (973 Program, 2009CB930601)National Natural Science Foundation of China (50803028, 20804019 and 61006007)+3 种基金Natural Science Foundation of Jiangsu Province of China (BK2009427)Natural Science Fund for Universities in Jiangsu (10KJB430010)Scien-tific and Technological Activities for Returned Scholars in Nanjing City (NJ209001)Nanjing University of Posts and Telecommunications (NY208045)
文摘In this work, a near-infrared (NIR) phosphorescent probe for F- based on a cationic Ir(III) complex [Ir(Bpq)2(quqo)]PF6 (1) with dimesitylboryl (Mes2B) groups on the cyclometalated CAN ligands (Bpq) and 2-(quinolin-2-yl)quinoxaline (quqo) as NAN ligand was designed and synthesized. The excited state properties of 1 were investigated in detail using molecular orbital calculations and experimental methods. Upon excitation, complex 1 shows NIR phosphorescent emission around 680 nm. Interestingly, the complex can be excited with long wavelength around 610 nm. Such long-wavelength excitation can reduce the background emission interference and improve the signal-to-noise ratio. Furthermore, the selective binding between boron atom and F- can give rise to the quenching of emission and realize the near-infrared phosphorescent sensing for F-. We wish that the results reported herein will be helpful for the further design of excellent near-infrared phosphorescent probes based on heavy-metal complexes.
