5329-29-3Relevant articles and documents
Supramolecular Metallacycles and Their Binding of Fullerenes
Ehnbom, Andreas,G?b, Christian R.,Oppel, Iris M.,Sturm, Lisa,Tobe, Yoshito
, (2019)
The synthesis of a new triaminoguanidinium-based ligand with three tris-chelating [NNO]-binding pockets and C3 symmetry is described. The reaction of tris-(2-pyridinylene-N-oxide)triaminoguanidinium salts with zinc(II) formate leads to the formation of cyclic supramolecular coordination compounds which in solution bind fullerenes in their spherical cavities. The rapid encapsulation of C60 can be observed by NMR spectroscopy and single-crystal X-ray diffraction and is verified using computation.
A novel sensitive turn-on fluorescent Zn2+ chemosensor based on an easy to prepare C 3-symmetric schiff-base derivative in 100% aqueous solution
Zhou, Ying,Li, Zhan-Xian,Zang, Shuang-Quan,Zhu, Yan-Yan,Zhang, Hong-Yan,Hou, Hong-Wei,Mak, Thomas C. W.
, p. 1214 - 1217 (2012)
A C3-symmetric Schiff-base example of the new simple, low cost, highly water soluble, and sensitive turn-on fluorescent Zn2+ chemosensor is described. The sensor was successfully applied to the detection of intracellular Zn2+. Moreover, the sensor could also serve as a potential recyclable component in sensing materials. Notably, the color change is so obvious that all of the recycling process can be seen clearly by the naked eye.
A knot-linker planarity control strategy for constructing highly crystalline cationic covalent organic frameworks: Decoding the effect of crystallinity on adsorption performance
Da, Hong-Ju,Qian, Hai-Long,Yan, Xiu-Ping,Yang, Cheng-Xiong
, p. 12657 - 12664 (2020)
Ionic covalent organic frameworks (iCOFs), a subclass of COFs, offer a functional platform for diverse applications. However, strong charge repulsion between adjacent layers often leads to low-crystalline iCOFs. Herein, we report a knot-linker planarity control strategy to synthesize a highly crystalline iCOF with C3-symmetric cationic units. More planarity of building blocks gives higher crystallinity of iCOFs, leading to a larger surface area and more exposed binding sites of iCOFs. The highly crystalline iCOF in turn gives larger uptake capacity and faster kinetics than the low-crystalline iCOF and the non-crystalline iCOF, uncovering the significance of crystallinity for the removal of pollutants. The prepared highly crystalline TFPT-TGCl-iCOF exhibits larger saturation sorption capacity (893 mg g-1) than previous adsorbents for 2,4-dichlorophenol. The developed strategy provides a new way to construct highly crystalline iCOFs with C3 symmetric-type cationic sites for various applications. This journal is
A: C 3-symmetric twisted organic salt as an efficient mechano-/thermo-responsive molecule: A reusable and sensitive fluorescent thermometer
Prusti, Banchhanidhi,Samanta, Pralok K.,English, Niall J.,Chakravarty, Manab
supporting information, p. 12321 - 12324 (2021/11/30)
C3-Symmetric triaminoguanidinium chloride is condensed with N-pentylphenothiazine carboxaldehyde to realise a thermally stable twisted organic salt on a gram scale. It appears as a nonmetallic economic salt having an integrated propeller shape with three tub-like cores and displays efficient reversible mechano- and thermo-fluorochromic behaviour. Unlike previous reports, the designed fluorescent, colorimetric thermometer works over a higher temperature range of 130-170 °C with five distinct colour variations.
Constructing a 3D-layered energetic metal-organic framework with the strong stacking interactions of hydrogen-bridged rings: The way to an insensitive high energy complex
Chen, Xiang,Gao, Rong,Guo, Zhaoqi,Ma, Haixia,Zhang, Cong,Zhang, Jianguo
, p. 5436 - 5446 (2020/09/03)
Energetic metal-organic frameworks (EMOFs) have drawn considerable attention due to their good energetic performances and acceptable sensitivity. Among these, 3D EMOFs show good thermal stability and mechanical insensitivity. Nevertheless, most of the 3D EMOFs have porous structures and relatively low crystal density, which is closely related to the energetic performances. This structural feature makes the preparation of 3D EMOFs with high density important and challenging. Herein, we present an efficient approach to construct 3D-layered EMOFs with strong stacking interactions, particularly the stacking of hydrogen-bridged rings, to solve the aforementioned contradiction. In this strategy, two EMOFs possessing layered structures with the same ligand and the metal center, named 1 and 2, were rationally designed and synthesized. EMOF 1 exhibits a 1D chain structure with a "head-to-tail"stacking mode, while EMOF 2 has a 3D architecture with a "head-to-head"stacking mode. The crystal structure and the molecular interaction analyses disclosed that the stacking of hydrogen-bridged rings in 2 are stronger than that in 1 and they play a more important role than π-stacking in the higher packing efficiency of 2. TG-DSC-MS-FTIR simultaneous tests showed that 2 has better thermal stability due to the improved structural reinforcement. As expected, 2 exhibits higher density, better energetic performance, and safety than 1 and possesses detonation velocity comparable to that of cyclo-1,3,5-trimethylene-2,4,6-trinitramine (RDX). Our approach highlights the importance of the crystal packing architecture and the stacking interactions on the energetic properties of EMOFs and offers a new approach for the design and synthesis of high-performance insensitive energetic complexes.
