A new family of fluoroboronated pyridylhydrazinyl aldehyde hydrozone fluorophores named BOPAHs were developed via a simple one-pot two-step reaction from chloro-2-hydrazinylpyridine and aromatic aldehyde derivatives.T...A new family of fluoroboronated pyridylhydrazinyl aldehyde hydrozone fluorophores named BOPAHs were developed via a simple one-pot two-step reaction from chloro-2-hydrazinylpyridine and aromatic aldehyde derivatives.They were well characterized by NMR,HRMS,and X-ray crystal structures.They exhibit main absorption from 400 nm to 600 nm and emission bands from 500 nm to 700 nm.The absorption/emission bands redshift with increased polarity of solvents indicate a distinct intramolecular charge transfer characteristic,further confirmed by density functional theory(DFT)calculations.These BOPAHs display weak fluorescence in solutions,but they exhibit obvious aggregation-induced emission properties,possibly resulting from weak intermolecular interactions by fixing the molecular conformations in aggregate states.展开更多
中南民族大学化学与材料科学学院张展教授课题组在扩展卟啉大环合成与性质研究方面取得了重要进展。2月5日,相关研究成果以"Cyclo[2]pyridine[8]pyrrole:An Expanded Porphyrinoid with Three Closed-Shell Oxidation States"...中南民族大学化学与材料科学学院张展教授课题组在扩展卟啉大环合成与性质研究方面取得了重要进展。2月5日,相关研究成果以"Cyclo[2]pyridine[8]pyrrole:An Expanded Porphyrinoid with Three Closed-Shell Oxidation States"为题发表在国际著名期刊《美国化学会志》(J.Am.Chem.Soc.)上。展开更多
A new borate [Ni(dien)2][B5O6(OH)4]2(1,dien = diethylenetriamine) has been hydrothermally synthesized and structurally characterized.The crystal structure of compound 1 crystallizes is of monoclinic system,space group...A new borate [Ni(dien)2][B5O6(OH)4]2(1,dien = diethylenetriamine) has been hydrothermally synthesized and structurally characterized.The crystal structure of compound 1 crystallizes is of monoclinic system,space group C2 with a= 14.498(3),b = 11.757(2),c= 8.5455(17),β= 90.93(3)o,V = 1456.4(5)3,Z= 2.Compound 1 consists of borate polyanion [B5O6(OH)4]-and complex cation [Ni(dien)2]2+.The anionic [B5O6(OH)4]-units are linked by O-H…O H-bonds to form a 3-D supramolecular network with 1-D large channels,where the [Ni(dien)2]2+ cation are located.The optical absorption spectrum indicates that compound 1 is wide-band-gap semiconductors.展开更多
文摘A new family of fluoroboronated pyridylhydrazinyl aldehyde hydrozone fluorophores named BOPAHs were developed via a simple one-pot two-step reaction from chloro-2-hydrazinylpyridine and aromatic aldehyde derivatives.They were well characterized by NMR,HRMS,and X-ray crystal structures.They exhibit main absorption from 400 nm to 600 nm and emission bands from 500 nm to 700 nm.The absorption/emission bands redshift with increased polarity of solvents indicate a distinct intramolecular charge transfer characteristic,further confirmed by density functional theory(DFT)calculations.These BOPAHs display weak fluorescence in solutions,but they exhibit obvious aggregation-induced emission properties,possibly resulting from weak intermolecular interactions by fixing the molecular conformations in aggregate states.
文摘中南民族大学化学与材料科学学院张展教授课题组在扩展卟啉大环合成与性质研究方面取得了重要进展。2月5日,相关研究成果以"Cyclo[2]pyridine[8]pyrrole:An Expanded Porphyrinoid with Three Closed-Shell Oxidation States"为题发表在国际著名期刊《美国化学会志》(J.Am.Chem.Soc.)上。
文摘A new borate [Ni(dien)2][B5O6(OH)4]2(1,dien = diethylenetriamine) has been hydrothermally synthesized and structurally characterized.The crystal structure of compound 1 crystallizes is of monoclinic system,space group C2 with a= 14.498(3),b = 11.757(2),c= 8.5455(17),β= 90.93(3)o,V = 1456.4(5)3,Z= 2.Compound 1 consists of borate polyanion [B5O6(OH)4]-and complex cation [Ni(dien)2]2+.The anionic [B5O6(OH)4]-units are linked by O-H…O H-bonds to form a 3-D supramolecular network with 1-D large channels,where the [Ni(dien)2]2+ cation are located.The optical absorption spectrum indicates that compound 1 is wide-band-gap semiconductors.