Neutral Chiral Tetrakis‐Iodo‐Triazole Halogen‐Bond Donor for Chiral Recognition and Enantioselective Catalysis
作者:Florian Ostler、Dariusz G. Piekarski、Tobias Danelzik、Mark S. Taylor、Olga García Mancheño
DOI:10.1002/chem.202005016
日期:2021.2
neutral halogenbond donor for both chiral anion‐recognition and enantioinduction in ion‐pair organocatalysis. NMR‐titration studies revealed significant differences in anion affinity between the halogenbonding receptor and its hydrogen bonding parent. Selective recognition of chiral dicarboxylates and asymmetric induction in a benchmark organocatalytic reaction were demonstrated using the halogen bond
Colorimetric anion chemosensors based on anthraquinone: naked-eye detection of isomeric dicarboxylate and tricarboxylate anions
作者:Yi-Shan Lin、Guan-Min Tu、Chi-Yung Lin、Yen-Tzu Chang、Yao-Pin Yen
DOI:10.1039/b811172c
日期:——
Three new colorimetric anion receptors 1–3 were synthesized and characterized. Among them, both 1 and 3 showed good sensitivity and selectivity for discrimination of maleatevs. fumarate or malatevs. tartrate by dramatic colour changes in DMSO or DMSO–H2O (95 : 5). Thus, both 1 and 3 can be used as optical chemosensors for recognition of maleatevs. fumarate or malatevs. tartrate anion. Besides that, the receptor 1 has also a unique colour change for recognition of either cis-aconitate or trans-aconitate in DMSO, accordingly it can be used for detection of each isomer and discrimination of cis-aconitate from trans-aconitate anion.
Composition for film formation, method of film formation, and silica-based film
申请人:JSR CORPORATION
公开号:US20030091838A1
公开(公告)日:2003-05-15
A composition for film formation which comprises:
(A) a product of hydrolysis and condensation obtained by hydrolyzing and condensing at least one silane compound selected from the group consisting of compounds represented by the formula (1), compounds represented by the formula (2), and compounds represented by the formula (3) in the presence of water and an ammonium compound, and
(B) an organic solvent.