نتایج جستجو برای: 4 bipyridinium
تعداد نتایج: 1303753 فیلتر نتایج به سال:
Using the photocurable electrolyte solution containing viologen derivative 1,1′-bis- (4-vinylbenzyl)-4,4′-bipyridinium dihexafluorophosphate (EV 2+ •2PF 6 − ) and its composite of EV triphenylamine N,N′ -di(4-((3-(triethoxysilyl)-propyl)imino)methyl)phenyl- -diphenyl-4,4′-biphenyldiamine (TPB-PSSO) as electrochromic active layer, respectively, flexible devices (FECDs) were prepared by technolog...
A reconstituted myoglobin with a synthetic cofactor having anionic binding sites effectively works as a photocatalyst for hydrogen generation in the presence of monomethylated bipyridinium.
Deprotonation of the two terminal COOH groups on a 4,4'-bipyridinium linear derivative leads to a pronounced slow down on the kinetics of threading and unthreading by the cucurbit[7]uril host.
A benzoquinone monolayer-functionalized electrode reveals electrochemically or chemically controlled wettability; the hydrophobicity of the hydroquinone-modified surface is enhanced by the presence of a donor-acceptor complex with N,N'-dimethyl-4,4'-bipyridinium as the pi-electron acceptor.
A series of cationic, ditopic N-donor ligands based on 4,4'-bipyridine (4,4'-bipy), 3-aminopyrazine (apyz) and 2-aminopyrimidine (apym), each incorporating two positively-charged N-heterocycles linked by a conformationally-flexible spacer unit, have been synthesised and treated with palladium(II) or platinum(II) precursors [M(2,2'-bipy)(NO(3))(2)] (M = Pd(II) or Pt(II)) to form highly cationic ...
Abstract Heteroditopic calix[6]arenes are extensively exploited as synthetic receptors and molecular components of supramolecular threaded interlocked structures. We describe the synthesis two novel calix[6]arene macrocycles, upper rim which is functionalized with either or three phenylthioureido groups. These moieties excellent hydrogen‐bond donors largely affect conformation macrocycle, both ...
The tendency for viologen radical cations to dimerize has been harnessed to establish a recognition motif based on their ability to form extremely strong inclusion complexes with cyclobis(paraquat-p-phenylene) in its diradical dicationic redox state. This previously unreported complex involving three bipyridinium cation radicals increases the versatility of host-guest chemistry, extending its p...
4,4'-Bipyridin-1,1'-ium dichloride [C(10)H(10)Cl(2)N(2) (I)] and 4,4'-bipyridin-1,1'-ium dinitrate [C(10)H(10)N(4)O(6) (II)] have been prepared and the crystal structures determined at 90.0 (2) K. Molecules of (I) are linked by two chlorine-bridged, three-centered N-H...Cl hydrogen bonds into chains along the b axis. The chains are coupled by weak C-H...Cl interactions into a molecular ladder a...
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