High affinity of p-sulfonatothiacalix[4]arene with phenanthroline-diium in aqueous solution
作者:Kui Wang、En-Cui Yang、Xiao-Jun Zhao、Yu Liu
DOI:10.1039/c4ra15047c
日期:——
The molecular binding behavior of sulfonated calixarenes with phenanthroline-diium guests were systemically investigated. p-Sulfonatothiacalix[4]arene shows a high affinity with phenanthroline-diium guests in the order of magnitude of 105 M−1.
Method for preparing 1,1′-ethylene-2,2′-bipyridinium dichloride
申请人:NANJING REDSUN BIOCHEMISTRY CO., LTD.
公开号:US10858337B2
公开(公告)日:2020-12-08
A method for preparing 1,1′-ethylene-2,2′-bipyridinium dichloride includes mixing an aqueous diquat dibromide solution with hydrochloric acid, adding dropwise to a mixture of an organic solvent, a bromine absorbent, and an oxidant, and reacting to produce 1,1′-ethylene-2,2′-bipyridinium dichloride.
Molecular Binding Behaviors of Sulfonated Calixarenes with Phenanthroline-diium in Aqueous Solution and Solid State: Cavity Size Governing Capsule Formation
作者:Kui Wang、En-Cui Yang、Xiao-Jun Zhao、Hong-Xi Dou、Yu Liu
DOI:10.1021/cg500730m
日期:2014.9.3
The molecular binding behaviors of p-sulfonatocalix[4]arene (SC4A), p-sulfonatocalix[5]arene (SC5A), and p-sulfonatothiacalix[4]arene (STC4A) with 5,6-dihydropyrazion[1,2,3,4-lmn][1,10]phenanthroline-4,7-diium (DP2+) were systematically investigated by crystallography, NMR spectroscopy, and microcalorimetry at pH 1-2. The obtained results showed that, in both aqueous solution and the solid state, DP2+ was immersed into the cavity of the sulfonated calixarene host in a slantwise degree with the aromatic moiety being included first. The different slantwise degree of the guest in the host cavity determined whether the host guest capsule could be formed in the solid state. Furthermore, all three sulfonated calixarene hosts showed high affinities with DP2+ in the magnitude of 10(5)-10(6) M-1 in aqueous solution, and the binding modes for host guest complexation were explained from a thermodynamic viewpoint.
ORGANIC COMPOUND, ELECTROCHROMIC DEVICE, ELECTROCHROMIC APPARATUS, OPTICAL FILTER, IMAGE PICKUP APPARATUS, LENS UNIT, AND WINDOW MEMBER
申请人:CANON KABUSHIKI KAISHA
公开号:US20190002758A1
公开(公告)日:2019-01-03
An organic compound is represented by general formula (1) below:
where X
1
and X
2
are each independently selected from the group consisting of an alkyl group, an aryl group, and an aralkyl group;
R
11
to R
16
are each independently selected from the group consisting of a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, a heterocyclic group, and a halogen atom; R
21
and R
22
are each independently selected from the group consisting of a hydrogen atom, an alkyl group, an aryl group, and an aralkyl group; and A
1
−
and A
2
−
each independently represent a monovalent anion.
METHOD FOR PREPARING 1,1'-ETHYLENE-2,2'-BIPYRIDINIUM DICHLORIDE
申请人:NANJING REDSUN BIOCHEMISTRY CO., LTD.
公开号:US20200308138A1
公开(公告)日:2020-10-01
A method for preparing 1,1′-ethylene-2,2′-bipyridinium dichloride includes mixing an aqueous diquat dibromide solution with hydrochloric acid, adding dropwise to a mixture of an organic solvent, a bromine absorbent, and an oxidant, and reacting to produce 1,1′-ethylene-2,2′-bipyridinium dichloride.