搜索到369篇“ TERPYRIDINE“的相关文章
Construction of metallo-complexes with 2,2′:6′,2″-terpyridine substituted triphenylamine in different modified positions and their photophysical properties
2024年
The stable coordinated metallo-complexes based on 2,2′:6′,2″-terpyridine(tpy)and its derivatives have been widely researched for various wide-ranging applications in photoelectronics,catalysis,sensor,photoluminescence,and so on.However,the most reported studies ignored the comprehensive comparison between structures modified by different positions and photoluminescence.Herein,we design a series of metallo-complexes which were assembled with tpy substituted triphenylamine(TPA)at different positions and metal ions and explored their photophysical properties.In the solution state,MLE_(2)based on the 5,5″-positions modification showed the highest PLQYs and PL intensity.With the increase of solvent polarity,MLB2exhibit the largest redshift.In the solid state,from MLA_(2)to MLE_(2),the emission colours are gradually red-shifted from yellow to red.The findings in this work may pave a new way to design functional metallo-complexes,not just for PL properties.
Shengwen GuanZhaotong WeiNingxu HanYude WeiBin XuMing WangJunjuan Shi
6,6″-二(2,6-二甲氧基苯)-三联吡啶及其衍生物金属配位自组装的研究进展
2024年
过去几年里,6,6"-二(2,6-二甲氧基苯)-三联吡啶及其衍生物在多组分自组装过程中具有自识别能力强,能够有效抑制副产物的生成等特点,因此在精确构建多配体参与的金属配位超分子结构及功能研究方面具有独特优势.这种新型互补型配体的应用不仅丰富了三联吡啶金属配位超分子结构的研究内容,还展示了在发光材料、主客体化学、药物载体和限域催化等领域的广阔应用前景.基于此,本综述对基于6,6"-二(2,6-二甲氧基苯)-三联吡啶的衍生配体配位自组装研究中的最新进展进行了系统总结,并简要探讨了此领域目前所面临的发展机遇及挑战.
王敏陈帮塘陈桥林王俊陈名钊蒋志龙王平山
关键词:三联吡啶金属有机配合物
水溶性三联吡啶类锌离子荧光探针的合成及其性能研究
2024年
以2-乙酰基吡啶与4-吡啶甲醛为起始原料,通过一锅法合成4’-(吡啶基)-2,2’∶6’,2”-三联吡啶中间体,后与碘甲烷发生亲电加成反应生成一种具有良好水溶性的三联吡啶类荧光探针分子N-甲基-4-{4’-(2,2’∶6’,2”-三联吡啶)}-吡啶碘盐(L2),其结构和纯度经核磁共振波谱(NMR)和元素分析(EA)证实。紫外-可见吸收光谱和荧光光谱检测结果显示,探针L2与Zn^(2+)的络合比为2∶1,在0~14μmol/L范围内荧光强度与Zn^(2+)浓度之间具有良好的线性关系,检测限为1.46×10^(-7)mol/L,对水样中Zn^(2+)的检测结果令人满意。
赵茜毛乐敏王宏伟李丽君孙肖梦
关键词:三联吡啶荧光探针水溶性锌离子
4取代三联吡啶锌金属配合物的抗菌活性研究被引量:1
2024年
试验旨在研究4取代三联吡啶锌金属配合物的抗菌活性。采用微量肉汤稀释法测定4取代三联吡啶锌金属配合物对金黄色葡萄球菌、沙门氏菌、大肠杆菌、铜绿假单胞菌、副溶血弧菌和无乳链球菌的最小抑菌浓度(MIC),观察经配合物作用后的细菌生长情况、菌体细胞形态、细胞膜通透性及胞内蛋白表达量的变化,探究其对金黄色葡萄球菌的抗菌作用机制。结果显示,4取代三联吡啶锌金属配合物对金黄色葡萄球菌、副溶血弧菌具有较高的抗菌活性,经配合物作用后的金黄色葡萄球菌生长延迟、菌体发生干瘪破裂、细胞膜通透性增强及胞内蛋白表达量减少。研究表明,4取代三联吡啶锌金属配合物可能通过破坏菌体或抑制蛋白表达而抑制细菌活性。
张子萱王本伟贺兆源孙大猛陈龙智郑自华马震陈海兰
关键词:三联吡啶金属配合物抗菌活性金黄色葡萄球菌抗菌机制
D-π-A型三联吡啶衍生物及其锌配合物的合成及性质研究
2024年
以4-正丁氧基苯甲醛为电子给体,三联吡啶为电子受体,通过Witting成烯反应设计并合成了一种D-π-A构型的三联吡啶衍生物DY,并进一步与六水合硝酸锌反应,合成了一种锌(Ⅱ)配合物DY-Zn.通过核磁共振氢谱和红外光谱对化合物DY和DY-Zn的结构进行了表征.利用紫外-可见吸收光谱和荧光光谱研究了二者的光学性质.结果表明,配合物DY-Zn具有良好的聚集诱导荧光增强性质,在含水量为80%时,荧光强度达到最高值,而化合物DY表现出聚集诱导荧光淬灭性质.
邓奕王亚轩胡磊王慧
关键词:三联吡啶衍生物荧光性质聚集诱导发光
Dynamic Crosslinked Phosphorescent Poly(vinyl alcohol)-Terpyridine Films with Enhanced Mechanical Properties and Tunable Shape Memory
2024年
Achieving versatile room temperature phosphorescence(RTP)materials,especially with tunable mechanical properties and shape memory is attractive and essential but rarely reported.Here,a strategy was reported to realize multi-functional RTP films with multicolor fluorescence,ultralong afterglow,adjustable mechanical properties,and shape memory through the synergistic dynamic interaction of lanthanide(Ln~Ⅲ)-terpyridine coordination,borate ester bonds,and hydrogen bondings in a poly(vinyl alcohol)(PVA)matrix.By varying the amount of borax,the mechanical properties of the films could be finely controlled due to the change of crosslinking degree of dynamic borate ester bonds in PVA.The assembly and disassembly of borate ester bonds upon the trigger of borax and acid were applied as reversible linkage to achieve programmable shape memory behavior.In addition,the films displayed both fascinating multicolor fluorescence and ultralong afterglow characteristics due to the presence of Ln III doping and confinement of terpyridine in PVA.This study provides a new avenue to impart modulable mechanical strength and shape memory to RTP materials.
Meng WeiWei-Hao FengChen YuZhen-Yi JiangGuang-Qiang YinWei LuTao Chen
4′-(2-吡啶基)三联吡啶的镧系(Ⅲ)配合物的晶体结构、荧光性质和磁性
2024年
以4'-(2-吡啶基)-2,2'∶6',2″-三联吡啶(2-pyterpy)为配体,通过溶剂热法合成了5个双核配合物[Ln(2-pyterpy)(NO_(3))_(2)(μ-OCH_(3))]_(2)(Ln-2-pyterpy,Ln=Pr、Sm、Eu、Dy、Er)。单晶X射线衍射分析表明,配合物Pr-2-pyterpy和Sm-2-pyterpy同构,属于单斜晶系,P2_(1)空间群,a=0.95643(19)nm,b=1.9654(4)nm,c=1.1935(2)nm,β=90.41(3)°。配合物Er-2-pyterpy属于单斜晶系,C2/c空间群,a=2.8388(6)nm,b=1.2048(2)nm,c=1.5206(3)nm,β=121.70(3)°。粉末X射线衍射研究表明,配合物Eu-2-pyterpy与Dy-2-pyterpy同构且与文献报道的配合物[Ln(2-pyterpy)(NO_(3))_(2)(μ-OCH_(3))]_(2)(Ln=Tb,Dy)结构相同,属于单斜晶系,P2_(1)/n空间群。镧系收缩效应在调整该系列配合物结构中起到了重要作用。固态配合物Ln-2-pyterpy(Ln=Pr、Sm、Eu、Dy)均发射Ln(Ⅲ)的特征荧光。在300 K,配合物Ln-2-pyterpy(Ln=Pr、Sm、Eu、Dy)的χ_(M)T实验值与2个孤立的Ln(Ⅲ)离子的理论值基本一致。根据2 K时χ_(M)T实验值推断,配合物Sm-2-pyterpy和Eu-2-pyterpy的顺磁离子间分别通过甲氧基桥传递弱的反铁磁和铁磁耦合作用。
王朝阳杨春宋瑶瑶韩娜刘晓蒙王庆伦
关键词:三联吡啶荧光性质磁性
三联吡啶衍生物及其锌配合物的设计合成及光物理性质研究
2024年
以乙基香兰素、2-乙酰基吡啶和六水合硝酸锌等为原料,合成了一种三联吡啶衍生物L及其锌(Ⅱ)配合物LZnL,其结构经核磁共振氢谱和傅里叶红外光谱表征。结合理论计算,研究了它们的光物理性质。结果表明:与配体L相比,配合物LZnL的吸收峰和发射峰均展现出明显的红移现象。该研究不仅为三联吡啶类配体的结构修饰提供了新的思路,同时也为开发具有潜在光学应用的金属配合物材料提供了理论依据。
王志宇杨静丁飞扬王慧
关键词:三联吡啶衍生物光物理性质
Terpyridine-based metallo-cuboctahedron nanomaterials for efficient photocatalytic degradation of persistent organic pollutants
2024年
Metal–organic cage photocatalysts with nanoscale dimensions have received wide attention in the field of photocatalytic environmental pollutant treatment due to their large cavities,easy modification,high tunability,and enriched active sites.Herein,we prepared a series of dihydroanthracene-cored terpyridine-based metallo-cuboctahedron nanomaterials through a selfassembly method,which exhibited satisfactory degradation performance for persistent organic pollutants under visible light irradiation.In particular,under light conditions,S1-Zn,one of the prepared nanomaterials,produced photogenerated holes oxidizing water molecules to∙OH,which attacked ibuprofen(IBU)for up to 95% degradation.Simultaneously,the corresponding photogenerated electrons reduced the dissolved oxygen in water,producing 66.2μmol/L hydrogen peroxide.The obtained supramolecular photocatalytic materials have a stable structure with non-precious metals and do not require a sacrificial agent.The metal sites of metallo-cuboctahedrons adsorb pollutants and transfer captured holes to them,accelerating degradation and promoting simultaneous H_(2)O_(2) production.This work not only proposes a simple and efficient synthesis method for supramolecular photocatalysts but also opens up opportunities for efficient,low-cost,and multifunctional materials for environmental persistent organic pollutants treatment.
Qixia BaiYan HuangZhihong ChenYilin PanXiaohan ZhangQingwu LongQiaoan YangTun WuTing-Zheng XieMingjian WangHongguang LuoChun HuPingshan WangZhe Zhang
关键词:SELF-ASSEMBLY
Four New Terpyridine Complexes Based Polyoxometalates with[W_(10)O_(32)]^(4-) Anions as High-Efficiency Dual-Site Catalysis for Thioether Oxidation Reaction
2024年
Polyoxometalates modified with complex cations have attracted increasing attention because of the fascinating properties and the controllable structures.By adjusting the synthesis conditions,four new terpyridine complexes based hybrid POMs,[(TPY-H)CuCl]_(4)[W_(10)O_(32)]·2DMF·2H_(2)O(1),[(TPY-H)Cu(DMSO)(H_(2)O)]_(2)[W_(10)O_(32)]·2H_(2)O(2),[(TPY-H)_(2)Cu]_(2)[W_(10)O_(32)]·6DMSO·8H_(2)O(3) and[(TPY-Br)CuCl(DMSO)(H_(2)O)]_(2)[(TPY-Br)CuCl]_(2)[W_(10)O_(32)]·2DMSO·4H_(2)O(4),were prepared by using‘one-pot’method.Sing-crystal X-ray diffraction analyses,infrared radiation,etc.,revealed the structural composition of compounds 1—4,which indicates that synthesis conditions have a directional regulatory effect on the compounds synthesis.Thioether oxidation catalytic reactions show 1—4 have good catalytic activities,and powder X-ray diffraction and thermogravimetry analysis show 1—4 have superduper catalytic stability.Moreover,4 has better catalytic activity because of the different structure of terpyridine complexes.Therefore,a possible mechanism of dual-site catalysis by both cations and anions is proposed.
Yin ZhangWei-Dong YuFang-Qian WangXiangnan WangJiawan ZhouChao LiuJun Yan
关键词:POLYOXOMETALATES

相关作者

王铖铖
作品数:10被引量:8H指数:2
供职机构:南京大学
研究主题:铱配合物 辅助配体 苯基 制法 二苯基
刘庆燕
作品数:40被引量:0H指数:0
供职机构:江西师范大学
研究主题:单胞 单斜晶系 空间群 镍 配位聚合物
王玉玲
作品数:40被引量:2H指数:1
供职机构:江西师范大学
研究主题:单胞 单斜晶系 空间群 镍 配位聚合物
宋朋
作品数:1被引量:0H指数:0
供职机构:中国科学院大连化学物理研究所
研究主题:LOCAL PROPERTIES_OF PHOTOPHYSICAL TERPYRIDINE COMPLEXATION
彭孝军
作品数:486被引量:772H指数:14
供职机构:大连理工大学
研究主题:荧光染料 染料 荧光探针 菁染料 荧光