137436-24-9

Upstream product

• 123-31-9 hydroquinone 
• 112-82-3 hexadecanyl bromide 
• 106-51-4 p-benzoquinone 
• 6068-28-6 tosylate de n-hexadecyle 
• 30008-10-7 sodium 4-hydroxybenzen-1-olate 

Downstream Products

• 159838-38-7 1,4-bis(ethynyl)-2,5-di(hexadecyloxy)benzene 
• 161745-92-2 (2,5-bis(hexadecyloxy)-1,4-phenylene)bis(ethyne-2,1-diyl)bis(trimethylsilane) 
• 434935-08-7 1,4-bis(hexadecyloxy)-2,5-divinylbenzene 
• 145483-64-3 1,4-diodo-2,5-bis(n-hexadecyloxy)benzene 

Relevant academic research and scientific papers

Click functionalization of a dibenzocyclooctyne-containing conjugated polyimine

A conjugated poly(phenyl-co-dibenzocyclooctyne) Schiff-base polymer, prepared through polycondensation of dibenzocyclooctyne bisamine (DIBO-(NH2)2) with bis(hexadecyloxy)phenyldialdehyde, is reported. The resulting polymer, which has

METHOD OF PURIFYING ALKOXYPHENOL

PROBLEM TO BE SOLVED: To provide a purifying method that can easily remove a dialkoxybenzene from a crude composition containing an alkoxyphenol, to obtain a high-purity alkoxyphenol, and a production method that allows a high-purity alkoxyphenol to be obtained. SOLUTION: After a C1-5 lower alcohol is added to a crude composition containing an alkoxyphenol, represented by formula (1), and insoluble matter is subjected to solid-liquid separation (where R is a C6-20 alkyl group). SELECTED DRAWING: None COPYRIGHT: (C)2018,JPOandINPIT

Synthesis and Properties of Triphenodioxazine-Based Conjugated Polymers for Polymer Solar Cells

As a fused-ring conjugated unit, triphenodioxazine, has been applied in two series of thiophene-free conjugated polymers for polymer solar cells. The polymers were synthesized through a multi-step synthetic route, and the substituents had a great effect on the reactivity of the reactants. Relationships among the polymer structures as well as thermal, optical, and electrochemical properties were investigated in detail by experimental data analysis and theoretical simulation. The polymers possess highly planar backbones, broad Vis/NIR absorption bands, suitable frontier molecular orbital energies, and low band gaps ranging from 1.3 to 1.8 eV. The power conversion efficiencies of their photovoltaic devices are about 1 %. Introducing longer alkyl side chains into a polymer can bring about a better film-forming ability and improve the photovoltaic performance.

Molecular spoked wheels: Synthesis and self-assembly studies on rigid nanoscale 2D objects

We present the efficient synthesis of a new molecular spoked-wheel structure (MSW-3). Two derivatives with diameters of approximately 4 nm have been prepared. By highlighting the importance of pseudo-high-dilution conditions during cyclization, we were able to access the compounds on a several hundred milligram scale. In addition to the standard characterization (NMR spectroscopy, MS), we describe a detailed investigation of the optical properties of the fluorescent MSWs by comparison with appropriate model chromophores. Furthermore, a comprehensive study of the structure in solution by means of light- and X-ray scattering experiments has been conducted. Scanning tunneling microscopy (STM) revealed the two-dimensional organization of the molecules on highly oriented pyrolytic graphite and emphasized the spoked-wheel structure. The diameter of these molecules measured by small-angle X-ray scattering is in very good agreement with that obtained from STM and matches the results of molecular modeling. This confirms the rigidifying effect of the spokes, which results in highly shape-persistent nanometer-sized oblate organic compounds. Copyright

TRANSITION-METAL CHARGE-TRANSPORT MATERIALS, METHODS OF FABRICATION THEREOF, AND METHODS OF USE THEREOF

Briefly described, embodiments of this disclosure include transition-metal charge-transport materials, methods of forming transition-metal charge-transport materials, and methods of using the transition-metal charge-transport materials.

Efficient synthesis of 1,4-dialkoxy and 1,4-dialkyl substituted 2,5-divinylbenzenes via the Stille reaction

An efficient palladium catalyzed cross coupling of tributyl(vinyl)stannane with dialkoxy and dialkyl substituted 1,4-dihalobenzenes is described. This single-step coupling provides an efficient synthesis of functionalized 2,5-divinylbenzenes, which are us

The CA.M lattice revisited. Gel formation from a linear bis-isocyanuric acid and 2-amino-4,6-bis-(4-tert-butylphenylamino)-1,3,5-triazine

Five bis(isocyanuric) acid dimers have been prepared and characterised. The introduction of flexible alkyl chains was necessary to aid solubility. On mixing with N,N-bis(4-tert-butyphenyl)melamine in THF followed by slow evaporation, a viscous gel can form which is interpreted as evidence for the assembly of an infinite 2-D hydrogen bonded network.

Molecular mechanism of anomalous increase in the helical pitch of cholesteric liquid crystals induced by achiral dopants

A dopant-induced anomalous increase in the helical pitch of dicholesteryl 10,12-docosadiynedioate 1 is explained by generation of smectic clusters in the cholesteric phase where the dopants act as promoters of smectic domains. The dopants, having a mesogenic core and the proper length of alkyl chains on both their molecular sides, such as 4,4′-dialkylazobenzenes, 4,4′-dialkylazoxybenzenes and 4,4′-dialkylbiphenyls, considerably increase the pitch. However, dopants having benzene or a binaphthyl structure in the molecular center, and alkyl chain at one side of the molecules and Z-isomers of azobenzene and azoxybenzene derivatives slightly decrease the pitch by acting as impurities that decrease the transition temperature of the host. At X-ray diffraction study of the cholesterics revealed that the pitch increases with an increase in size and amount of the smectic domains induced by the appropriate dopants.

Alkoxylated p-phenylenevinylene oligomers: Synthesis and spectroscopic and electrochemical properties

Twenty-one n-alkoxy substituted phenylenevinylene oligomers were synthesized, varying in size, number and position of the OR groups. IR,MS and solubility data are presented. NMR measurements provided the molecular structure as well as information about conformations and molecular dynamics. UV and of cyclic voltammetric data give correlations of chemical structure (number and position of OR substituents) with separate HOMO and LUMO energies.

Fluorescence Studies of Poly(p-phenyleneethynylene)s: The Effect of Anthracene Substitution

The poly(p-phenyleneethynylene) molecules, PI-PIII, synthesized by a palladium-catalyzed cross-coupling reaction of diiodobenzene derivatives and derivatives of 1,4-diethynylbenzene, are highly luminescent materials.The polymers are soluble by virtue of the -OC16H33 groups introduced on the aromatic rings and by controlling their molecular weight.The fluorescent quantum yields are between 0.35 and 0.40 depending on the material.The excited-state lifetimes of the polymers are 1-2 ns, slightly shorter than that of the model compund, 1,4-diphenylethynyl-2,5-dibutoxybenzene, which has a lifetime of 3 ns.Incorporation of anthracene, coupled at the 9,10-positions by using 9,10-dibromoanthracene, into the polymer backbone decreases the quantum yield to between 0.05 and 0.27 depending on the anthracene content.In addition, low-energy electronic transitions and longer wavelength emission bands associated with the anthracene group are produced.The polymers harvest optical energy and transfer it to the anthracene resulting in emission from this chromophore.In the case where only terminal anthracene units, introduced by using 9-bromo-10-phenylethynylanthracene, are present, the process is very efficient with >95percent of the energy being transferred to the end groups.