2844-15-7Relevant articles and documents
Nonlinear optical properties of diaromatic stilbene, butadiene and thiophene derivatives
Kukkonen, Esa,Lahtinen, Elmeri,Myllyperki?, Pasi,Haukka, Matti,Konu, Jari
, p. 6640 - 6650 (2021/04/22)
Series of highly polar stilbene (1a-e), diphenylbutadiene (2a-c) and phenylethenylthiophene (3a-c) derivatives were preparedviaHorner-Wadsworth-Emmons method with a view to produce new and efficient materials for second harmonic generation (SHG) in the so
Copper Bis(thiosemicarbazonato)-stilbenyl Complexes That Bind to Amyloid-β Plaques
Cullinane, Carleen,Donnelly, Paul S.,Hayne, David J.,Lim, SinChun,McLean, Catriona A.,Noor, Asif,Roselt, Peter D.,Van Zuylekom, Jessica K.,White, Jonathan M.
, p. 11658 - 11669 (2020/08/24)
Alzheimer's disease is characterized by the presence of extracellular amyloid-β plaques. Positron emission tomography (PET) imaging with tracers radiolabeled with positron-emitting radionuclides that bind to amyloid-β plaques can assist in the diagnosis o
Charge neutral rhenium tricarbonyl complexes of tridentate N-heterocyclic carbene ligands that bind to amyloid plaques of Alzheimer's disease
Barnard, Peter J.,Donnelly, Paul S.,McLean, Catriona A.,Noor, Asif,Wiratpruk, Nuchareenat
supporting information, p. 4559 - 4569 (2020/04/17)
Two tridentate ligand systems bearing N-heterocyclic carbene (NHC), amine and carboxylate donor groups coupled to benzothiazole- or stilbene-based amyloid binding moieties were synthesised. Reaction of the imidazolium salt containing pro-ligands with Re(CO)5Cl yielded the corresponding rhenium metal complexes which were characterised by NMR, and X-ray crystallography. These ligands are of interest for the potential preparation of technetium-99m imaging agents for Alzheimer's disease and the capacity of these rhenium complexes bind to amyloid fibrils composed of amyloid-β peptide and amyloid plaques in human frontal cortex brain tissue was evaluated using fluorescence microscopy. These studies show that the complexes bound efficiently to amyloid-β fibrils and some evidence of binding to amyloid-β plaques.
Molecular probes for imaging of myelin
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Page/Page column 23; 28-30, (2018/06/18)
A molecular probe for labeling myelin includes a fluorescent trans-stilbene derivative.
Theoretical and Experimental Studies of N,N-Dimethyl-N′-Picryl-4,4′-Stilbenediamine
Papper, Vladislav,Wu, Yuanyuan,Kharlanov, Vladimir,Sukharaharja, Ayrine,Steele, Terry W. J.,Marks, Robert S.
, p. 13 - 19 (2015/02/19)
N,N-dimethyl-N′-picryl-4,4′-stilbenediamine (DMPSDA) was prepared, purified and crystallised in a form of black lustrous crystals, and its absorption and fluorescence spectra were recorded in cyclohexane, acetonitrile and dimethyl sulfoxide. Non-emissive
Rhenium(i) complexes of N-heterocyclic carbene ligands that bind to amyloid plaques of Alzheimer's disease
Chan, Chung Ying,Noor, Asif,McLean, Catriona A.,Donnelly, Paul S.,Barnard, Peter J.
supporting information, p. 2311 - 2314 (2017/02/23)
A series of [Re(i)L(CO)3]+ complexes (where L is a bifunctional bis(NHC)-amine ligand) that are analogues of potential Tc-99m diagnostic imaging agents for Alzheimer's disease have been synthesised. One of the complexes bound to amyl
New organic conjugated dye nano-aggregates exhibiting naked-eye fluorescence color switching
Ding, Ge,Lu, Yao,Qin, Xiaozhuan,Su, Jihong,Zhang, Shengtao,Li, Hongru,Luo, Ziping,Chen, Lingyun,Gao, Fang
, p. 19 - 32 (2016/12/26)
In this study, a variety of new conjugated containing strong electron-donating groups were prepared for formation of organic nano-scale aggregates. The properties and aggregation modes of these aggregates were investigated on basis of time dependent absorption, fluorescence emission spectra as well as scanning electron microscope images. The results show that nano organic aggregates could be yielded by the linear dyes in mixed DMF/H2O solvent through a simple re-precipitation method, while no aggregates of the branched dyes were produced. X-ray diffraction of single crystal and X-ray diffraction patterns of the powders results demonstrate that the linear dyes tend to show ordered molecular arrangements, while the armed dyes do not exhibit such a tendency. A remarkable fluorescence switching process under 365 nm lamp was observed for the target aggregates. This study successfully provides real examples of organic aggregates in mixed DMF/H2O solvent which have great capacity to show enhanced fluorescence color switching.
Fluorescent gelators for detection of explosives
Hanabusa, Kenji,Takata, Shingo,Fujisaki, Masafumi,Nomura, Yasushi,Suzuki, Masahiro
, p. 1391 - 1401 (2017/08/02)
Carbazole-, quinoline-, benzothiazole-, and stilbene-containing fluorescent gelators are synthesized by connecting gelationdriving segments, and their gelation abilities are studied with 13 solvents. Fibrous thin-layer films are prepared on quartz plates
Solvatochromic behavior of dyes with dimethylamino electron-donor and nitro electron-acceptor groups in their molecular structure
De Melo, Carlos E. A.,Nandi, Leandro G.,Domínguez, Moisés,Rezende, Marcos C.,Machado, Vanderlei G.
, p. 250 - 260 (2015/03/31)
Six dyes with N,N-dimethylaminophenyl and 4-nitrophenyl or 2,4-dinitrophenyl groups in their molecular structures were prepared and characterized. These compounds have different conjugated bridges (C-C, C-N, and N-N) connecting the electron-donor and the electron-acceptor groups. All compounds are solvatochromic, with reverse solvatochromism occurring. The solvatochromic band observed in each spectrum for the dyes is due to a π rarr π? transition, of an intramolecular charge transfer nature, which occurs from the electron-donor N,N-dimethylaminophenyl group to the electron-acceptor group in the molecules, which is reinforced by the structures of the compounds optimized by applying density functional theory, which exhibit high planarity. The reverse solvatochromism was explained considering two resonance structures. The benzenoid form is better stabilized in less polar solvents and characterizes the region displaying positive solvatochromism, while the dipolar form is better stabilized in more polar solvents, in the region of negative solvatochromism. The Catalán multiparametric approach was used to study the contribution of solvent acidity, basicity, dipolarity, and polarizability to the solvatochromism exhibited by the compounds. These compounds are good candidates for the investigation of the polarizability and, to a lesser extent, the dipolarity of the medium, with very little interference from specific interactions of the solvent through hydrogen bonding.
Evaluating two new Schiff bases synthesized on the inhibition of corrosion of copper in NaCl solutions
Zhou, Yang,Xu, Shenying,Guo, Lei,Zhang, Shengtao,Lu, Hao,Gong, Yulong,Gao, Fang
, p. 14804 - 14813 (2015/03/05)
Two kinds of new Schiff base derivatives, 2-((4-(4-(dimethylamino)styryl)phenylimino)methyl) (DSM) and its intermediate 4-(4-aminostyryl)-N,N-dimethylaniline (AND), form self-assembled monolayers (SAMs) on copper surfaces. The SAMs have been examined by a series of techniques, including contact angle (CA), atomic force microscope (AFM), scanning electronic microscope (SEM), and electrochemical measurements. The results suggest that the two derivatives adsorb onto the copper surface and generate corresponding hydrophobic films, which play an important role in the anticorrosion of copper in 3% NaCl solution. Quantum chemical calculations and molecular dynamics (MD) simulation are also used for further insight into the adsorption mechanism.
