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草酸-草酰胺混合桥联Mn(Ⅱ)-Cu(Ⅱ)一维配合物的合成、晶体结构与磁性

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高等学校化学学报 2012年第5期33卷 892-896页

作者：胡孔球寇会忠清华大学化学系北京100084

合成了1个草酸-草酰胺混合桥联的双异金属配合物[Cu(L)(H2O)Mn(C2O4)].4H2O(H2L为1,4,8,11-四氮杂环十四烷-2,3-二酮).配合物由[Cu(Ⅱ)L(H2O)]、Mn(Ⅱ)、草酸根和晶格水分子构成.Mn(Ⅱ)通过草酸根的交替桥联作用形成弯折的中性一维链状... 详细信息

合成了1个草酸-草酰胺混合桥联的双异金属配合物[Cu(L)(H2O)Mn(C2O4)].4H2O(H2L为1,4,8,11-四氮杂环十四烷-2,3-二酮).配合物由[Cu(Ⅱ)L(H2O)]、Mn(Ⅱ)、草酸根和晶格水分子构成.Mn(Ⅱ)通过草酸根的交替桥联作用形成弯折的中性一维链状骨架[Mn(C2O4)]n,而Mn(Ⅱ)剩余的2个配位点则由[CuL]上的2个草酰胺氧原子占据,形成了草酸-草酰胺混合桥联一维双金属配合物.而Cu(Ⅱ)为五配位,轴向上由1个水分子占据.磁性研究表明,配合物中Cu(Ⅱ)-Mn(Ⅱ)间通过草酰胺传递反铁磁相互作用,而Mn(Ⅱ)-Mn(Ⅱ)间亦通过草酸根离子存在反铁磁耦合.通过MAGPACK软件对变温磁化率进行拟合,得到JCu-Mn=-13.1 cm-1,JMn-Mn=-0.87 cm-1,g=2.01.

关键词：草酸草酰胺锰铜磁性

铀酰配位介导咔唑三羧酸超分子组装体的结构演变

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核化学与放射化学 2022年第2期44卷 115-126页

作者：王帅孟燎刘康于吉攀胡孔球梅雷中国科学院高能物理研究所北京100049

作为一类典型的金属-有机框架材料(MOFs),基于锕系金属节点的MOFs具有其独特的锕系-配体键合方式。然而,这些配位相互作用如何参与并影响有机配体的晶格组装过程仍有待研究。在本工作中,以咔唑三羧酸有机配体与铀酰离子的配位组装为例,... 详细信息

作为一类典型的金属-有机框架材料(MOFs),基于锕系金属节点的MOFs具有其独特的锕系-配体键合方式。然而,这些配位相互作用如何参与并影响有机配体的晶格组装过程仍有待研究。在本工作中,以咔唑三羧酸有机配体与铀酰离子的配位组装为例,通过控制合成条件详细研究了铀酰配位作用对咔唑三羧酸配体晶格组装过程的调控。单晶结构分析表明,随着铀酰金属节点的引入,咔唑三羧酸超分子组装体实现了从氢键-有机网络结构向金属-有机网络结构的逐级演变。在这一调控过程中,不同咔唑三羧酸间的连接方式由羧基氢键对逐渐被铀酰配位作用取代,二维网络结构也从六重穿插非平面网络转变为平面超分子网络和金属-有机配位网络。相关转变过程主要表现在羧基不断参与铀酰中心的配位作用,这一过程也得到了红外光谱的证实。通过本工作的开展,成功揭示了铀酰-配体配位作用调控无机-有机多孔材料合成的分子机制及相关材料结构演变的详细过程。

关键词：锕系元素铀酰金属-有机框架配位键合超分子组装结构调控

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3D Printing of Tough Hydrogel Scaffolds with Functional Surface Structures for Tissue Regeneration

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Nano-Micro Letters 2025年第2期17卷 18-45页

作者： Ke Yao Gaoying Hong Ximin Yuan Weicheng kong Pengcheng Xia Yuanrong Li Yuewei Chen Nian Liu Jing He Jue Shi Zihe hu Yanyan Zhou Zhijian Xie Yong He State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Liangzhu Laboratory Zhejiang UniversityHangzhou 310027People’s Republic of China Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province College of Mechanical EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Stomatology Hospital School of StomatologyZhejiang University School of MedicineHangzhou 310027People’s Republic of China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001People’s Republic of China Institute of Digital Medicine Nanjing First HospitalNanjing Medical UniversityNanjing 210006People’s Republic of China

Hydrogel scaffolds have numerous potential applications in the tissue engineering ***,tough hydrogel scaffolds implanted in vivo are seldom reported because it is difficult to balance biocompatibility and high mechanical *** by Chinese ramen,we propose a universal fabricating method(printing-P,training-T,cross-linking-C,PTC&PCT)for tough hydrogel scaffolds to fill this ***,3D printing fabricates a hydrogel scaffold with desired structures(P).Then,the scaffold could have extraordinarily high mechanical properties and functional surface structure by cycle mechanical training with salting-out assistance(T).Finally,the training results are fixed by photo-cross-linking processing(C).The tough gelatin hydrogel scaffolds exhibit excellent tensile strength of 6.66 MPa(622-fold untreated)and have excellent ***,this scaffold possesses functional surface structures from nanometer to micron to millimeter,which can efficiently induce directional cell ***,this strategy can produce bionic human tissue with mechanical properties of 10 kPa-10 MPa by changing the type of salt,and many hydrogels,such as gelatin and silk,could be improved with PTC or PCT *** experiments show that this scaffold can effectively promote the new generation of muscle fibers,blood vessels,and nerves within 4 weeks,prompting the rapid regeneration of large-volume muscle loss injuries.

关键词： 3D printing Tough hydrogel scaffold Functional surface structure Tissue regeneration Biomaterials

基于紫精配体的新型铀酰配位聚合物的合成、结构和光致变色性能

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核化学与放射化学 2023年第6期45卷 541-549,I0004页

作者：李星君胡孔球梅雷于吉攀张强石伟群苏州科技大学化学与生命科学学院江苏苏州215009 中国科学院高能物理研究所北京100049

配体的选择直接影响铀酰配合物的自组装模型,对配合物的结构和功能具有决定性作用。在这项工作中,使用水热法实现了多种配体与铀酰离子的组装,合成了三种基于紫精功能基团的铀酰配位聚合物。三种配位聚合物的主体骨架均是一维链状结构... 详细信息

配体的选择直接影响铀酰配合物的自组装模型,对配合物的结构和功能具有决定性作用。在这项工作中,使用水热法实现了多种配体与铀酰离子的组装,合成了三种基于紫精功能基团的铀酰配位聚合物。三种配位聚合物的主体骨架均是一维链状结构。其中,配合物1和2均表现出明显的荧光性质。此外,配合物2具有显著可逆的光致/热致变色性质。紫外-可见光谱和电子顺磁共振(EPR)光谱表明这种可逆的颜色变化是由于紫精配体在光照后产生了紫精自由基所致。这项研究实现了多例基于紫精配体的铀酰配位聚合物的组装合成,为更多贫铀功能性材料的开发提供了思路。

关键词：铀酰紫精光致变色配合物

深度学习引导的高通量分子筛选用于锶铯的选择性配位

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核化学与放射化学 2023年第5期45卷 456-465页

作者：张智渊董越邱雨晴毕可鑫胡孔球戴一阳周利刘冲吉旭石伟群四川大学化学工程学院四川成都610065 中国科学院高能物理研究所北京100049

试图从配位化学性质差异的角度增进对乏燃料后处理过程中锶铯分离的认识。基于对晶体结构进行数据挖掘和深度学习架构,从8种碱金属和碱土金属元素的配位结构(约3.3×10^(4)个样本)中归纳和分析锶、铯的配位化学性质,尤其是配位键长。通... 详细信息

试图从配位化学性质差异的角度增进对乏燃料后处理过程中锶铯分离的认识。基于对晶体结构进行数据挖掘和深度学习架构,从8种碱金属和碱土金属元素的配位结构(约3.3×10^(4)个样本)中归纳和分析锶、铯的配位化学性质,尤其是配位键长。通过引入贝叶斯优化工具,建立了高效的transformer模型,可以以很高的准确性预测配体与锶、铯离子分别的结合强度及其差异。作为概念验证,成功对配体分子结构(约9.1×10^(3)个)对锶、铯的潜在配位选择性进行排序,并为未来的配体设计确定了不同官能团对实现配位选择性的贡献度。本研究利用人工智能手段,为乏燃料后处理过程及放射化学语境中元素的配位化学信息及分离技术开发积累基础知识,为后续实验提供指导和参考。

关键词：深度学习贝叶斯优化乏燃料后处理 Sr/Cs分离

异质金属竞争配位用于混合配体型氯代异烟酸铀酰配合物的合成调控

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核化学与放射化学 2022年第2期44卷 127-140页

作者：田文江梅雷孔祥鹤耿峻山梁媛媛曾立雯胡孔球夏良树柴之芳石伟群南华大学核科学技术学院湖南衡阳421001 中国科学院高能物理研究所核能放射化学实验室北京100049 中国科学院宁波工业技术研究所先进能源材料工程实验室浙江宁波315201

本工作从基于2,6-二氯异烟酸(H-2,6-dcpca)和2,2′-联吡啶(2,2′-bpy)混合配体的卤代异烟酸铀酰配合物((UO;)(2,6-dcpca);(2,2′-bpy))出发,通过进一步引入第二金属中心(Ag;、Zn;和Cu;)进行竞争配位,实现了对这一混合配体型氯代异烟酸... 详细信息

本工作从基于2,6-二氯异烟酸(H-2,6-dcpca)和2,2′-联吡啶(2,2′-bpy)混合配体的卤代异烟酸铀酰配合物((UO;)(2,6-dcpca);(2,2′-bpy))出发,通过进一步引入第二金属中心(Ag;、Zn;和Cu;)进行竞争配位,实现了对这一混合配体型氯代异烟酸铀酰配合物的结构调控,并成功合成了六种新型混合配体型异质金属铀酰配合物。单晶结构分析表明,这些异质金属节点具有不同的配位行为,可以参与2,2′-bpy和[2,6-dcpca];配体的竞争配位并改变铀酰中心的配位环境,导致最终形成的水热产物具有不同铀酰配位模式和化学结构。同时,由于晶体结构的不同,这些化合物在超分子晶格中的弱相互作用和晶格堆积方式也表现出较大变化。通过第二金属中心的竞争配位策略,实现了混合配体型铀酰配合物中铀酰配位模式的调控及多种异质金属铀酰化合物的制备,证明了基于多重竞争配位的合成调控策略的可行性,并有望在未来用于更多的功能性锕系-有机杂化材料的合成。

关键词：铀酰配合物氯代异烟酸混合配体异质金属竞争配位

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Bifunctional bridging capping layer enables 24.5% efficiency of perovskite solar cells with polymer-based hole transport materials

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Science China Chemistry 2025年第1期 350-359页

作者： Can Zhu Yiyang Wang Lei Meng Beibei qiu Jing Li Shucheng Qin Ke hu Xin Jiang Wenbin Lai Minchao Liu Zhe Liu Chenxing Lu Jinyuan Zhang Yongfang Li Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences School of Chemical Science University of Chinese Academy of Sciences Key Laboratory of Solid State Optoelectronic Devices of Zhejiang Province College of Physics and Electronic Information Engineering Zhejiang Normal University Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and ChemistryChinese Academy of Sciences Laboratory of Advanced Optoelectronic Materials College of Chemistry Chemical Engineering and Materials ScienceSoochow University

Developing a bridge capping layer between perovskite and hole transport layer materials（HTMs） in the n-i-p perovskite solar cells（pero-SCs） is an effective approach to modify the morphology of HTMs and passivate the perovskite ***, we select the quinoxaline-based bifunctional passivation agent, quinoxalin-6-yl-methylamine hydrochloride（Qx MACl）,as the bridging layer, and a D-A copolymer PBQ12 containing the same quinoxaline unit as an HTM for the n-i-p pero-SCs. Due to the π-π stacking among the common quinoxaline units in the bridge layer and HTM, Qx MACl induces the π-π stacking of the PBQ12 film and improves the film morphology of HTMs with better conductivity. Additionally, Qx MACl can effectively passivate the perovskite surface, and PBQ12 possesses appropriate energy levels and high hole mobility. The pero-SCs based on FAPbI3with PBQ12/Qx MACl treatment showed a higher power conversion efficiency（PCE） of 24.05% and outstanding stability, maintaining 95.4% and 92.1% of its initial PCE after 750 h of storage and after over 800 h of thermal annealing at 85 °C, respectively. To further enhance the PCE of the PBQ12/Qx MACl-based devices, we developed a non-metal ion dopant for the PBQ12 HTM. Through trace doping of PBQ12 HTM by the non-metal ion dopant, the PCE of the PBQ12/Qx MACl-based devices reached 25.24%（the calibrated PCE of 24.55% by the National Institute of Metrology, China）.

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Super-reflector enabled by non-interleaved spin-momentum-multiplexed metasurface

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Light(Science & Applications) 2023年第4期12卷 636-645页

作者： He-Xiu Xu Guangwei hu Xianghong kong Yanzhang Shao Patrice Genevet Cheng-Wei qiu Air and Missile Defense College Air Force Engineering University710051 Xi'anChina School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore 639798Singapore Department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore UniversitéCote d'Azur CNRSCentre de Recherche sur l'Hétéro-Epitaxie et ses Applications(CRHEA)06560 ValbonneFrance

Electromagnetic wave multiplexing,especially for that occurring at different incidences(spatial-frequency multiplexing),is pivotal for ultrathin multifunctional interfaces and high-capacity information processing and *** is yet extremely challenging based on passive and compact wave elements,since the wave excitation and scattering channels are exclusively coupled through gradient phases and hence momentum matching condition at the ***,we propose a spin-momentum multiplexed paradigm called a super-reflector enabling on-demand control of both retroreflections and anomalous reflections using a non-interleaved single-celled *** multiplexing four channels connecting two spin states excited onto each input of three spatial frequencies,a total of twelve channels are engineered,among which three are retroreflected channels and the residual are anomalous reflection *** compound multiplexed super-reflector allows five degrees of freedom in circular polarization Jones'matrix,approaching the intrinsic upper limit of such planar *** concept has been experimentally verified by a proof-of-concept super-reflector at microwave frequency,showcasing twelve reflected beams and a high efficiency exceeding 90.6%defined as the ratio of reflected power to incidence for each channel *** strategy opens a new avenue for angle multiplexing and angle-resolved metadevices toward the capacity limit of 2D planar Jones'matrix.

关键词： surface momentum reflected

Continuous Cooling Bainite Transformation Characteristics of a Low Carbon Microalloyed Steel under the Simulated Welding Thermal Cycle Process

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Journal of Materials Science & Technology 2013年第5期29卷 446-450页

作者： Xiangwei kong Chunlin qiu School of Mechanical Engineering and Automation Northeastern University State Key Laboratory of Rolling Technology and Automation Northeastern University

Continuous cooling transformation of a low carbon microalloyed steel was investigated after it was subjected to the simulation welding thermal cycle process and the interrupted cooling test. Microstructure observation was performed by optical microscopy and transmission electron microscopy. On the basis of the dilatometric data and microstructure observation, the continuous cooling transformation （CCT） diagram was determined, which showed that the main microstructure changes from a mixture of lath martensite and bainitic ferrite to full granular bainite with the increase in the cooling time t8/5 from 10 to 600 s, accompanied with a decrease in the microhardness. The interrupted cooling test confirmed that the bainitic ferrite can form attached to grain boundaries at the beginning of transformation even if the final microstructure contains a mixture of granular bainite and bainitic ferrite.

关键词： Low carbon microanoyed steel Bainitic ferrite Continuous cooling transformation Welding