Macrocycle‐Directed Construction of Tetrahedral Anion–π Receptors for Nesting Anions with Complementary Geometry
作者:Jian Luo、Jun Zhu、De‐Hui Tuo、Qinqin Yuan、Lei Wang、Xue‐Bin Wang、Yu‐Fei Ao、Qi‐Qiang Wang、De‐Xian Wang
DOI:10.1002/chem.201903272
日期:2019.10.17
pathway and afforded the otherwise inaccessible tetrahedral cages in considerable yields. Crystal structure suggested that the tetrahedral cages have an enclosed three-dimensional cavity surrounded by four electron-deficient triazine faces in a tetrahedral array. The complementary accommodation of a series of tetrahedral and relevant anions including BF4 - , ClO4 - , H2 PO4 - , HSO4 - , SO4 2- and PF6
Excellent cross-linking benefits, to improve wrinkle recovery can be obtained in laundry treatment by use of a triazine-based, cellulose cross-linking agent that has a highly flexible linking group between at least two, mono-reactive cross-linking moieties and cellulose unreactive substituent groups. The linking group acts as a ‘spring’ whereas the two end groups bind chemically to cotton fibres.
A water-soluble, triazine-based, non-dye, cellulose cross-linking agent that has a highly flexible linking group between at least two, mono-reactive cross-linking moieties and further hydrophilic or non-hydrophilic substituents.
[EN] TRIAZINES SUITABLE FOR USE IN FABRIC TREATMENT COMPOSITIONS<br/>[FR] TRIAZINES POUVANT ETRE UTILISEES DANS DES COMPOSITIONS DE TRAITEMENT DE TISSUS
申请人:UNILEVER PLC
公开号:WO2005123699A1
公开(公告)日:2005-12-29
A water-soluble, triazine-based, non-dye, cellulose cross-linking agent that has a highly flexible linking group between at least two, mono-reactive cross-linking moieties and further hydrophilic or non-hydrophilic substituents, being preferrably represented by the general formula (I): (R1)(X1)T-L1-B-T(X2)(R2) wherein: R1 et R2 are cellulose-unreactive substituent groups on the s-triazine (T) and may be the same or different, X1 and X2 are leaving groups on the s-triazine which are lost on reaction with cellulose and may be the same or different, L1 et L2 are linking groups, an may be the same or different or absent, B is the bridging group comprising or consisting of at least one aliphatic polyoalkylene chain.
Diversity-Oriented Construction and Interconversion of Multicavity Supermacrocycles for Cooperative Anion-π Binding
作者:Jian Luo、Yu-Fei Ao、Qi-Qiang Wang、De-Xian Wang
DOI:10.1002/anie.201810836
日期:2018.11.26
Base‐mediated supermacrocycle‐to‐supermacrocycle transformations were also revealed. With large cavities and many electron‐deficient triazine moieties, the supermacrocyles can accommodate large organic anions via multiple anion–π interactions as demonstrated for two supermacrocycles, which can host 2‐carboxyacetate and represent the first crystallographic examples of sandwich‐like structures with anion–π interactions