The photocatalytic conversion of CO_(2)into solar‐powered fuels is viewed as a forward‐looking strategy to address energy scarcity and global warming.This work demonstrated the selective photoreduction of CO_(2)to C...The photocatalytic conversion of CO_(2)into solar‐powered fuels is viewed as a forward‐looking strategy to address energy scarcity and global warming.This work demonstrated the selective photoreduction of CO_(2)to CO using ultrathin Bi_(12)O_(17)Cl_(2)nanosheets decorated with hydrothermally synthesized bismuth clusters and oxygen vacancies(OVs).The characterizations revealed that the coexistences of OVs and Bi clusters generated in situ contributed to the high efficiency of CO_(2)–CO conversion(64.3μmol g^(−1)h^(−1))and perfect selectivity.The OVs on the facet(001)of the ultrathin Bi_(12)O_(17)Cl_(2)nanosheets serve as sites for CO_(2)adsorption and activation sites,capturing photoexcited electrons and prolonging light absorption due to defect states.In addition,the Bi‐cluster generated in situ offers the ability to trap holes and the surface plasmonic resonance effect.This study offers great potential for the construction of semiconductor hybrids as multiphotocatalysts,capable of being used for the elimination and conversion of CO_(2)in terms of energy and environment.展开更多
The reactions of 5,5＇-bis（2-acylphenyl）diazo-dipyrromethane （H2L） with CuSO4 and NiCl2 resulted in the formation of corresponding mononuclear coordination complexes 2 （CuL） and 3 （NIL）. The crystal of complex...The reactions of 5,5＇-bis（2-acylphenyl）diazo-dipyrromethane （H2L） with CuSO4 and NiCl2 resulted in the formation of corresponding mononuclear coordination complexes 2 （CuL） and 3 （NIL）. The crystal of complex 2 is of monoclinic system, space group P21 with a = 10.040（5）, b = 11.900（5）, c = 11.170（5） A, β = 93.057（8）°, V = 1332.8（2） A3, Z = 2, C29H28N602Cu, Mr = 556.11, Dc = 1.386 g/cm, F（000） = 578 and/z（MoKa） = 0.857 mm^-1. The crystal of complex 3 belongs to the monoclinic system, space group P21/n with a = 12.0445（6）, b = 17.2101（8）, c = 16.3304（6） A, β = 128.407（2）°, V = 2654.6（2） A3, Z = 4, C29H28N6O2Ni, Mr= 551.28, Dc= 1.380 g/cm, F（000） = 1152 and μ（MoKa） = 0.770 mm^-1. In both complexes, the metal ions are in square-planar geometry by coordinating to two azo N atoms and two deprotonated pyrrole N atoms. Intramolecular Cu…O=C in complex 2 and intermolecular Ni…O=C in complex 3 were found. The UV-Vis spectra and thermal stability of complexes 2 and 3 were also studied.展开更多
A new 5,5＇-bisdiazo-dipyrromethane compound 3 has been synthesized and cha- racterized. The crystal of 3 is of orthorhombic, space group Iba2 with a = 19.1914（17）, b = 9.8396（8）, c = 13.7643（12） A, V= 2599.2（4...A new 5,5＇-bisdiazo-dipyrromethane compound 3 has been synthesized and cha- racterized. The crystal of 3 is of orthorhombic, space group Iba2 with a = 19.1914（17）, b = 9.8396（8）, c = 13.7643（12） A, V= 2599.2（4） A3, Z = 4, C29H34N602, Mr = 498.62, Dc = 1.274 g/cm3, F（000） = 1064, μ（MoKa） = 0.083 mm-1, the final R = 0.0302 and wR = 0.0786 for 6361 observed reflections with I 〉 2σ（/）, and R = 0.0320 and wR = 0.08006 for all data. It reveals that the molecules of compound 3 assemble into grid structures through a R22（7） type hydrogen bonding motif between azopyrrole and hydroxyl group. The grids interpenetrate each other with the assistance of C-H...π interaction.展开更多
A new 5,5＇-bisdiazo dipyrromethane, compound 2, has been synthesized and cha- racterized. The crystal of 2 is of monoclinic, space group P21/c with a = 16.3185（10）, b = 20.8225（13）, c = 18.5985（11） ）k, β = 11...A new 5,5＇-bisdiazo dipyrromethane, compound 2, has been synthesized and cha- racterized. The crystal of 2 is of monoclinic, space group P21/c with a = 16.3185（10）, b = 20.8225（13）, c = 18.5985（11） ）k, β = 114.5280（10）°, V = 5749.3（6） ）A^3, Z = 8, C25H26N602, Mr= 442.52, Dc= 1.022 g/cm, F（000） = 1872,/x（MoKa） = 0.068 mmI. The final R = 0.0469 and wR = 0.1143 for 10119 observed reflections with I 〉 2tr（/）, and R = 0.0677 and wR = 0.1231 for all reflections. The title compound prefers to form interlocked type dimer through quadruple N-H...N hydrogen bonds. The dimers self-assemble into a porous 3-D structure through O-H...O and C-H...N hydrogen bonds.展开更多
目的：探讨吸烟对冠状动脉旁路移植术患者麻醉诱导期脑电双频指数（BIS）和血流动力学的影响。方法：选取40例行冠脉搭桥手术患者，ASAⅡ~Ⅲ级，按随机数字表法分为吸烟组20例和未吸烟组20例。所有患者均使用咪唑安定、依托咪酯、异丙...目的：探讨吸烟对冠状动脉旁路移植术患者麻醉诱导期脑电双频指数（BIS）和血流动力学的影响。方法：选取40例行冠脉搭桥手术患者，ASAⅡ~Ⅲ级，按随机数字表法分为吸烟组20例和未吸烟组20例。所有患者均使用咪唑安定、依托咪酯、异丙酚、舒芬太尼和维库溴铵进行麻醉诱导，记录插管前、插管即刻和插管后1、2、3 min的心率（HR）、平均动脉压（MAP）和BIS值。结果：两组诱导前的基础MAP和BIS的比较差异无统计学意义（P〉0.05）；吸烟组的基础HR慢于未吸烟组。吸烟组气管插管即刻和气管插管后1、2 min的BIS值均高于未吸烟组（P〈0.05）；与未吸烟组相比，吸烟组在气管插管即刻、插管后1、2 min HR和MAP升高更明显（P〈0.05）。结论：吸烟影响冠状动脉旁路移植术麻醉诱导期的BIS，吸烟患者冠状动脉旁路移植手术麻醉诱导期血流动力学变化更加剧烈，更要注意保持血流动力学稳定，有效预防心肌缺血。展开更多
基金Natural Science Foundation of Shandong Province,Grant/Award Number:ZR2022MB106national training program of innovation and entrepreneurship for undergraduates,Grant/Award Number:202210424099National Natural Science Foundation of China,Grant/Award Numbers:21601067,21701057,21905147。
文摘The photocatalytic conversion of CO_(2)into solar‐powered fuels is viewed as a forward‐looking strategy to address energy scarcity and global warming.This work demonstrated the selective photoreduction of CO_(2)to CO using ultrathin Bi_(12)O_(17)Cl_(2)nanosheets decorated with hydrothermally synthesized bismuth clusters and oxygen vacancies(OVs).The characterizations revealed that the coexistences of OVs and Bi clusters generated in situ contributed to the high efficiency of CO_(2)–CO conversion(64.3μmol g^(−1)h^(−1))and perfect selectivity.The OVs on the facet(001)of the ultrathin Bi_(12)O_(17)Cl_(2)nanosheets serve as sites for CO_(2)adsorption and activation sites,capturing photoexcited electrons and prolonging light absorption due to defect states.In addition,the Bi‐cluster generated in situ offers the ability to trap holes and the surface plasmonic resonance effect.This study offers great potential for the construction of semiconductor hybrids as multiphotocatalysts,capable of being used for the elimination and conversion of CO_(2)in terms of energy and environment.
基金supported by the National Natural Science Foundation of China(NSFC No.21172174)Program of Study Abroad for Young Scholar sponsored by Tianjin Municipal Education Commission
文摘The reactions of 5,5＇-bis（2-acylphenyl）diazo-dipyrromethane （H2L） with CuSO4 and NiCl2 resulted in the formation of corresponding mononuclear coordination complexes 2 （CuL） and 3 （NIL）. The crystal of complex 2 is of monoclinic system, space group P21 with a = 10.040（5）, b = 11.900（5）, c = 11.170（5） A, β = 93.057（8）°, V = 1332.8（2） A3, Z = 2, C29H28N602Cu, Mr = 556.11, Dc = 1.386 g/cm, F（000） = 578 and/z（MoKa） = 0.857 mm^-1. The crystal of complex 3 belongs to the monoclinic system, space group P21/n with a = 12.0445（6）, b = 17.2101（8）, c = 16.3304（6） A, β = 128.407（2）°, V = 2654.6（2） A3, Z = 4, C29H28N6O2Ni, Mr= 551.28, Dc= 1.380 g/cm, F（000） = 1152 and μ（MoKa） = 0.770 mm^-1. In both complexes, the metal ions are in square-planar geometry by coordinating to two azo N atoms and two deprotonated pyrrole N atoms. Intramolecular Cu…O=C in complex 2 and intermolecular Ni…O=C in complex 3 were found. The UV-Vis spectra and thermal stability of complexes 2 and 3 were also studied.
基金supported by the National Natural Science Foundation of China(NSFCNo.20702038,21172174)Innovation Foundation of Tianjin Normal University(52XC1101)
文摘A new 5,5＇-bisdiazo-dipyrromethane compound 3 has been synthesized and cha- racterized. The crystal of 3 is of orthorhombic, space group Iba2 with a = 19.1914（17）, b = 9.8396（8）, c = 13.7643（12） A, V= 2599.2（4） A3, Z = 4, C29H34N602, Mr = 498.62, Dc = 1.274 g/cm3, F（000） = 1064, μ（MoKa） = 0.083 mm-1, the final R = 0.0302 and wR = 0.0786 for 6361 observed reflections with I 〉 2σ（/）, and R = 0.0320 and wR = 0.08006 for all data. It reveals that the molecules of compound 3 assemble into grid structures through a R22（7） type hydrogen bonding motif between azopyrrole and hydroxyl group. The grids interpenetrate each other with the assistance of C-H...π interaction.
基金Supported by the NNSFC (No.21172174, 20702038)Innovation Foundation of Tianjin Normal University (52XC1101)
文摘A new 5,5＇-bisdiazo dipyrromethane, compound 2, has been synthesized and cha- racterized. The crystal of 2 is of monoclinic, space group P21/c with a = 16.3185（10）, b = 20.8225（13）, c = 18.5985（11） ）k, β = 114.5280（10）°, V = 5749.3（6） ）A^3, Z = 8, C25H26N602, Mr= 442.52, Dc= 1.022 g/cm, F（000） = 1872,/x（MoKa） = 0.068 mmI. The final R = 0.0469 and wR = 0.1143 for 10119 observed reflections with I 〉 2tr（/）, and R = 0.0677 and wR = 0.1231 for all reflections. The title compound prefers to form interlocked type dimer through quadruple N-H...N hydrogen bonds. The dimers self-assemble into a porous 3-D structure through O-H...O and C-H...N hydrogen bonds.
文摘目的：探讨吸烟对冠状动脉旁路移植术患者麻醉诱导期脑电双频指数（BIS）和血流动力学的影响。方法：选取40例行冠脉搭桥手术患者，ASAⅡ~Ⅲ级，按随机数字表法分为吸烟组20例和未吸烟组20例。所有患者均使用咪唑安定、依托咪酯、异丙酚、舒芬太尼和维库溴铵进行麻醉诱导，记录插管前、插管即刻和插管后1、2、3 min的心率（HR）、平均动脉压（MAP）和BIS值。结果：两组诱导前的基础MAP和BIS的比较差异无统计学意义（P〉0.05）；吸烟组的基础HR慢于未吸烟组。吸烟组气管插管即刻和气管插管后1、2 min的BIS值均高于未吸烟组（P〈0.05）；与未吸烟组相比，吸烟组在气管插管即刻、插管后1、2 min HR和MAP升高更明显（P〈0.05）。结论：吸烟影响冠状动脉旁路移植术麻醉诱导期的BIS，吸烟患者冠状动脉旁路移植手术麻醉诱导期血流动力学变化更加剧烈，更要注意保持血流动力学稳定，有效预防心肌缺血。
