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卤代芳香族羧酸与含氮配体合成镧系配合物的结构、热化学和荧光性质 被引量:3
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作者 王晨璐 宿素玲 +1 位作者 任宁 张建军 《物理化学学报》 SCIE CAS CSCD 北大核心 2023年第1期56-66,共11页
采用室温溶液挥发法合成了五种结构新颖的镧系配合物,其结构通式为[Ln(2,4-DFBA)3(phen)]2(Ln=Sm 1,Eu2,Er 3,2,4-DFBA为2,4二氟苯甲酸的简写,phen为1,10-菲啰啉的简写),[Ln(2-Cl-6-FBA)2(terpy)(NO3)(H2O)]2(Ln=Tb4,Dy 5,2-Cl-6-FBA为2... 采用室温溶液挥发法合成了五种结构新颖的镧系配合物,其结构通式为[Ln(2,4-DFBA)3(phen)]2(Ln=Sm 1,Eu2,Er 3,2,4-DFBA为2,4二氟苯甲酸的简写,phen为1,10-菲啰啉的简写),[Ln(2-Cl-6-FBA)2(terpy)(NO3)(H2O)]2(Ln=Tb4,Dy 5,2-Cl-6-FBA为2-氯-6-氟苯甲酸的简写,terpy为2,2’:6’2’’-三联吡啶的简写)。五个配合物可以分为两个系列,使用不同的镧系离子作为中心离子。通过X射线单晶分析,5种配合物均属于单斜晶系,空间群为P21/n。配合物1,2和配合物3虽然具有相同的分子通式,但配位方式明显不同,形成了前者为9配位的松饼型,后者是8配位的双帽三棱柱几何构型。二维面状超分子结构的形成方式也明显不同,区别在于配合物1和2通过微弱的π-π堆积作用形成。配合物4和5是同构的,结构中引入了硝酸根离子较为有趣,通过C―H···F氢键和π-π堆积作用形成二维面状超分子结构。在299.25–1073.15K温度下对配合物1–5通过热重-微分热重-差示扫描量热/红外光谱(TG-DTG-DSC/FTIR)联用技术进行热分解机理的研究。测定了配合物1,2,4,5的固体荧光,特征过渡峰位于^(4)G_(5/2)→^(6)H_(5/2),^(4)G_(5/2)→^(6)H_(7/2),^(4)G_(5/2)→^(6)H_(9/2)(1),^(5)D_(0)→^(7)F_(0),^(5)D_(0)→^(7)F_(1),^(5)D_(0)→^(7)F_(2),^(5)D_(0)→^(7)F_(3),^(5)D_(0)→^(7)F_(4)(2),^(5)D_(4)→^(7)F_(6),^(5)D_(4)→^(7)F_(5),^(5)D_(4)→^(7)F_(4),^(5)D_(4)→^(7)F_(3)(4),和^(4)F_(9/2)→^(6)H_(15/2),^(4)F_(9/2)→^(6)H_(13/2)(5),均表现出镧系离子的特征过渡峰。此外,还对配合物2和4进行了荧光寿命的研究,其荧光衰减时间分别为1.288和0.648 ms。 展开更多
关键词 镧系配合物 超分子结构 热化学 三维红外 荧光性质
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Redefining the tumor microenvironment with emerging therapeutic strategies
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作者 suling xu XIAO LI WENxuE MA 《Oncology Research》 SCIE 2024年第11期1701-1708,共8页
The environment surrounding a tumor,known as the tumor microenvironment(TME),plays a role in how cancer progresses and responds to treatment.It poses both challenges and opportunities for improving cancer therapy.Rece... The environment surrounding a tumor,known as the tumor microenvironment(TME),plays a role in how cancer progresses and responds to treatment.It poses both challenges and opportunities for improving cancer therapy.Recent progress in understanding the TME complexity and diversity has led to approaches for treating cancer.This perspective discusses the strategies for targeting the TME,such as adjusting networks using extracellular vesicles to deliver drugs and enhancing immune checkpoint inhibitors(ICIS)through combined treatments.Furthermore,it highlights adoptive cell transfer(ACT)therapies as an option for tumors.By studying how components of the TME interact and utilizing technologies like single-cell RNA sequencing and spatial transcriptomics,we can develop more precise and efficient treatments for cancer.This article emphasizes the need to reshape the TME to boost antitumor immunity and overcome resistance to therapy,providing guidance for research and clinical practices in precision oncology. 展开更多
关键词 Tumor microenvironment(TME) Cancer immunotherapy Cytokine targeting Extracellular vesicles(EVs) Adoptive cell transfer(ACT)
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Guidelines for the diagnosis and treatment of prurigo nodularis
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作者 Li Zhang Qingchun Diao +27 位作者 Xia Dou Hong Fang Songmei Geng Hao Guo Yaolong Chen Chao Ji Chengxin Li Linfeng Li Jie Li Jingyi Li Wei Li Zhiming Li Yunsheng Liang Jianjun Qiao Zhiqiang Song Qing Sun Juan Tao Fang Wang Zhiqiang Xie Jinhua xu suling xu Hongwei Yan xu Yao Jianzhong Zhang Litao Zhang Gang Zhu Fei Hao Xinghua Gao 《Chinese Medical Journal》 2025年第22期2859-2861,共3页
Prurigo nodularis(PN)is a chronic pruritic inflammatory skin disease characterized by hyperkeratotic papules and nodules symmetrically distributed on the back and extensor surfaces of the extremities,accompanied by se... Prurigo nodularis(PN)is a chronic pruritic inflammatory skin disease characterized by hyperkeratotic papules and nodules symmetrically distributed on the back and extensor surfaces of the extremities,accompanied by severe pruritus.PN has a serious impact on quality of life.[1–3]PN is a complex and difficult-to-treat condition.There is a lack of unified understanding of its diagnosis and treatment specifications,and the means approved for treating PN are limited;thus,clinicians mostly use empirical therapies. 展开更多
关键词 prurigo nodularis pn diagnosis prurigo nodularis hyperkeratotic papules hyperkeratotic papules nodules chronic pruritic inflammatory skin disease empirical therapies treatment
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