56187-04-3Relevant articles and documents
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Comarmond,J.,Plumere,P.,Lehn,J.M.
, p. 6330 (1982)
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A mononuclear Mn2+ complex based on a novel tris-(ethyl acetate) pendant-armed tetraazamacrocycle: Effect of pyridine on self-assembly and weak interactions
Wen, Jinghan,Geng, Zhirong,Yin, Yuxin,Wang, Zhilin
, p. 16 - 20 (2012)
A novel pyridine containing tetraazamacrocycle 3,6,9,15-tetraazabicyclo[9. 3.1]pentadeca-1(15),11,13-triene-3,6,9-triacetic acid ethyl ester (1) and its mononuclear Mn2+ complex (2) have been prepared. Pyridine induced the π-π stacking of [Mn1]2+ and provided donors for nonclassical CH...O hydrogen bonding as well. In the solid state of 2, the combination of π-π interactions and hydrogen bonding constructed a 3D crystal structure and thus formed pairs of interacting mononuclear complexes that mediated weak magnetic exchanges between the Mn2+ ions. Meanwhile, self-assembly of 2 dissociated in the aqueous solution, and the effect of pyridine on the nature of DNA binding with 2 have also been investigated.
Second-Sphere Interaction Promoted Turn-On Fluorescence for Selective Sensing of Organic Amines in a TbIII-based Macrocyclic Framework
Huang, Xianqiang,Liu, Qingzhi,Liu, Shixi,Ma, Shengqian,Nafady, Ayman,Niu, Zheng,Ren, Junyu,Tsai, Chen-Yen,Ye, Yingxiang
supporting information, p. 23705 - 23712 (2021/09/22)
Guided by a second-sphere interaction strategy, we fabricated a Tb(III)-based metal—organic framework (MMCF-4) for turn-on sensing of methyl amine with ultra-low detection limit and high turn-on efficiency. MMCF-4 features lanthanide nodes shielded in a nonacoordinate geometry along with secondary coordination spheres that are densely populated with H-bond interacting sites. Nonradiative routes were inhibited by binding-induced rigidification of the ligand on the second coordination sphere, resulting in luminescence amplification. Such remote interacting mechanism involved in the turn-on sensing event was confirmed by single-crystal X-ray diffraction and molecular dynamic simulation studies. The design of both primary and secondary coordination spheres of Tb(III) enabled the first turn-on sensing of organic amines in aqueous conditions. Our work suggests a promising strategy for high-performance turn-on sensing for Ln-MOFs and luminous materials driven by other metal chromophores.
METHOD FOR PREPARING NOTA DERIVATIVE
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Paragraph 0042, (2019/08/14)
The present invention discloses Method for preparing NOTA derivative. Firstly, take 4-methylsulfonyl chloride and diethylenetriamine in tosyl group reaction to obtain the first product. And, take the first product and sodium methoxide in the first substitution reaction to obtain the second product. Further, take 4-methylsulfonyl chloride and ethylene glycol in tosyl group reaction to obtain a third product. The second product is coupled to the third product to obtain a fourth product. Take the fourth product and sulfuric acid in the second substitution reaction. Finally, a final product is obtained by a bonding reaction with hydrochloric acid. The preparation method improves the water absorption issue of the benzene ring structure compound (TACN) of the NOTA derivative.