Carbon‐Nanotube‐Mediated Electrochemical Transition in a Redox‐Active Supramolecular Hydrogel Derived from Viologen and an
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‐Alanine‐Based Amphiphile
作者:Sougata Datta、Santanu Bhattacharya
DOI:10.1002/chem.201600214
日期:2016.5.23
A two‐component hydrogelator (16‐A)2‐V2+, comprising an l‐alanine‐based amphiphile (16‐A) and a redox‐active viologen based partner (V2+), is reported. The formation the hydrogel depended, not only on the acid‐to‐amine stoichiometric ratio, but on the choice of the l‐amino acid group and also on the hydrocarbon chain length of the amphiphilic component. The redox responsive property and the electrochemical
据报道,有两种成分的水凝胶剂(16-A)2 -V 2+,包括基于l-丙氨酸的两亲物(16-A)和基于氧化还原活性的紫精的伴侣(V 2+)。水凝胶的形成不仅取决于酸与胺的化学计量比,还取决于1-氨基酸基团的选择以及两亲组分的烃链长度。通过逐步对紫精核(V 2+ / V +和V + / V 0)进行化学和电化学还原,进一步研究了该两组分体系的氧化还原响应特性和电化学行为。)。随着胺成分的增加,与紫精环相关的半波还原电势(E 1/2)移至更多的负值。这表明更高程度的盐形成阻碍了紫精部分的还原。有趣的是,在电化学不可逆水凝胶(16-A)2 -V 2+中掺入单壁碳纳米管可将其转变为准可逆电化学系统。
Membrane transport inspired hydrolysis of non-activated esters at near physiological pH
作者:Raki Mandal、Kingshuk Mahanty、Subhendu Mandal、Suman De Sarkar、Pradip K. Tarafdar
DOI:10.1039/d1cc04525c
日期:——
A positively charged micelle loaded with substrates was transported selectively to the reaction site (cathode) to promote the proximity and localization of the reactants (ester and hydroxide). The guided vehicular delivery coupled with electrolysis allows the hydrolysis of non-activated esters at near physiological pH with significant yields along with recyclability.
Catalytic Efficiency of Functionalized Vesicles in the Transamination of Pyridoxal-5′-phosphate with a Hydrophobic Amino Acid
作者:Yukito Murakami、Akio Nakano、Kazunari Akiyoshi
DOI:10.1246/bcsj.55.3004
日期:1982.9
and AlaC12 into polar and hydrophobic domains of the vesicles, respectively, in the Schiff-base formation process. The isomerization of the aldimine Schiff-base to the corresponding ketimine Schiff-base was confirmed to be the rate-determining step in the transamination process. The reaction site in the vesicular system was found to be equivalent in polarity to dioxane–water (7:3 v/v). However, the
Living and enantiomer-selective polymerization of allene initiated by Ni complex containing chiral phosphine
作者:Hai Zhu、Shizhong Luo、Zongquan Wu
DOI:10.1016/j.cclet.2018.03.002
日期:2019.1
Abstract A new allylnickel(II) complex ([S(R)]-N-[(1S)-2-(diphenylphosphino)-1-phenylethyl]-2-methyl-2-propanesulfinamide)(2,2,2-trifluoroacetato-κO)(π-allyl)nickel (2) was designed and prepared by usingchiral phosphine. 2 was revealed to efficiently initiate the polymerization of l - and d -N-(1-(dodecylamino)-1-oxopropan-2-yl)-4-(propa-1,2-dien-1-yloxy)-benzamide ( l -1 and d -1) in a living/controlled
Amino acid derivatives and active oxygen-resisting agent
申请人:Ajinomoto Co., Inc.
公开号:US05985922A1
公开(公告)日:1999-11-16
Provided is a novel active oxygen-resisting agent which has an excellent active oxygen resistance and which exhibits a good solubility in an oil solvent. An active oxygen-resisting agent containing as an active ingredient an amino acid derivative represented by the following formula (I) ##STR1## wherein Ar represents a substituted or substituted 2-hydroxyphenyl group or a pyridyl group, said substitution being selected from the group consisting of a halogen atom, a C.sub.1-6 alkyl group, a hydroxyl group, a hydroxy C.sub.1-6 alkyl group, a nitro group, a C.sub.1-6 alkoxyl group or a carboxyl group, R.sup.1 represents a side chain of an amino acid, X represents --O-- or --NH--, R.sup.2 represents a C.sub.8-22 alkyl group, and n represents 0 or 1, or its salt.