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Upstream product

• 106-21-8 tetrahydrogeraniol 
• 120-80-9 benzene-1,2-diol 
• 106-22-9 Citronellol 
• 55067-07-7 3,7-dimethyloctyl-4-methylbenzenesulfonate 
• 59965-20-7 1-bromo-3,7-dimethyloctane 

Downstream Products

• 1313574-89-8 3,3',4,4'-tetra(3,7-dimethyloctyloxy)benzil 
• 138145-28-5 1,2-bis(3,4-bis(decyloxy)phenyl)ethane-1,2-dione 
• 138145-29-6 1,2-bis-(3,4-diundecoxyphenyl)ethanedione 
• 544712-05-2 (rac)-4,5-bis((3,7-dimethyloctyl)oxy)phthalonitrile 
• 913060-27-2 3,4-bis(3,7-dimethyloctyloxy)aniline 
• 816463-62-4 1,2-bis(3,7-dimethyl-1-octoxy)-4,5-dinitrobenzene 
• 913060-25-0 3,4-bis(3,7-dimethyloctyloxy)nitrobenzene 

Relevant academic research and scientific papers

A new liquid crystalline derivative of dibenzotetraaza[14]annulene: synthesis, characterization and the preliminary evaluation of mesomorphic properties

A new dibenzotetraaza[14]annulene ligand has been synthesized that contains two 2-hydroxybenzoyl and four 3,7-dimethyloctyloxy peripheral substituents. Its mesomorphic textures were observed by means of a polarizing optical microscopy.

Large Faraday Rotation in Optical-Quality Phthalocyanine and Porphyrin Thin Films

The magneto-optical phenomenon known as Faraday rotation involves the rotation of plane-polarized light as it passes through an optical medium in the presence of an external magnetic field oriented parallel to the direction of light propagation. Faraday rotators find applications in optical isolators and magnetic-field imaging technologies. In recent years, organic thin films comprised of polymeric and small-molecule chromophores have demonstrated Verdet constants, which measure the magnitude of rotation at a given magnetic field strength and material thickness, that exceed those found in conventional inorganic crystals. We report herein the thin-film magnetic circular birefringence (MCB) spectra and maximum Verdet constants of several commercially available and newly synthesized phthalocyanine and porphyrin derivatives. Five of these species achieved maximum Verdet constant magnitudes greater than 105 deg T-1 m-1 at wavelengths between 530 and 800 nm. Notably, a newly reported zinc(II) phthalocyanine derivative (ZnPc-OT) reached a Verdet constant of -33 × 104 deg T-1 m-1 at 800 nm, which is among the largest reported for an organic material, especially for an optical-quality thin film. The MCB spectra are consistent with resonance-enhanced Faraday rotation in the region of the Q-band electronic transition common to porphyrin and phthalocyanine derivatives, and the Faraday A-term describes the electronic origin of the magneto-optical activity. Overall, we demonstrate that phthalocyanines and porphyrins are a class of rationally designed magneto-optical materials suitable for applications demanding large Verdet constants and high optical quality.

Synthesis and characterization of a new phenanthrenequinoxaline-based polymer for organic solar cells

Two donor–acceptor (D-A) conjugated polymers, PQx and PphQx, composed of alkylthienyl-substituted benzo[1,2-b:4,5-b']dithiophene (BDTT) as the electron donor and the new electron acceptors quinoxaline (Qx) or phenanthrenequinoxaline (phQx), were synthesized with Stille cross-coupling reactions. The number-averaged molecular weights (Mn) of PQx and PphQx were found to be 25.1 and 23.2 kDa, respectively, with a dispersity of 2.6. The band-gap energies of PQx and PphQx are 1.82 and 1.75 eV, respectively. These results indicate that, because phQx units have highly planar structures, their inclusion in D-A polymers will be a very effective method for increasing the polymers' effective conjugation lengths. The hole mobilities of PQx and PphQx were determined to be 5.0 × 10?5 and 2.2 × 10?4 cm2 V?1 s?1, respectively. A polymer solar cell device prepared with PphQx as the active layer was found to exhibit a power conversion efficiency (PCE) of 5.03%; thus, the introduction of phQx units enhanced both the short circuit current density and PCE of the device.

Dithieno[2,3-d:2′,3′-d′]naphtho[1,2-b:3,4-b′] dithiophene-a novel electron-rich building block for low band gap conjugated polymers

A feasible synthesis of 10,11-di(3,7-dimethyloctyloxy)dithieno[2,3-d: 2′,3′-d′]naphtho[1,2-b:3,4-b′]dithiophene (NDT) was presented, and a novel low band gap (LBG) NDT-based polymer was prepared and characterized. The preliminary results indicate that NDT

Discotic nickel bis(dithiolene) complexes - Synthesis, optoelectrochemical and mesomorphic properties

Fifteen neutral long-chain-substituted discotic nickel bis(1,2-diphenyl-1, 2-ethenedithiolene) complexes [Ni(dpedt)2], including thirteen new compounds, have been synthesized by new short and efficient synthetic pathways. Physical investigations show that these complexes are thermally stable, possess good electron-accepting properties, and absorb light strongly in the near-infrared spectral region. Electrochemical and optical properties of [Ni(dpedt)2] depend moderately on the functionalities attached to the phenyl rings of the complexes. Their LUMO and HOMO energy levels are in the range -4.7 to -5.0 and -5.7 to -6.0 eV, respectively. Two octa(n-alkoxy)- substituted complexes exhibit a columnar liquid crystalline phase with hexagonal symmetry. These highly soluble complexes are potential candidates for use as electron-accepting and electron-transporting materials for active layers in organic electronic applications, such as field-effect transistors or photovoltaic devices. Electrochemical and optical studies as well as multiphase transition behavior are reported for a series of new nickel bis(dithiolene) complexes. The effects of the nature and position of the functional groupsattached to the periphery of the complexes are investigated. X-ray diffraction measurements regarding the hexagonal columnar mesophase are reported. Copyright

A new class of discotic mesogens derived from tris(N-salicylideneaniline)s existing in C3h and Cs keto-enamine forms

(Chemical Equation Presented) Two series of a unique class of columnar liquid crystals derived from tris(N-salicylideneaniline)s [TSANs] in which the proton and the electron interact with each other through the H-bonding environment are reported. The synt

Tris(N-salicylideneanilines) [TSANs] exhibiting a room temperature columnar mesophase: synthesis and characterization

Tris(N-salicylideneaniline) derivatives with peripheral branched alkyl chains, existing in their C3h and Cs symmetric keto-enamine tautomeric forms, synthesized by condensing alkoxyanilines with 1,3,5-triformylphloroglucinol, display a technologically important columnar liquid crystal phase over a wide thermal interval (～160 °C) well below and above room temperature, as established by optical and calorimetric studies.

Peripherically Octasubstituted Phthalocyanines with Branched Alkoxy Chains

Phthalocyanines (H2Pc) octasubstituted with branched alkoxy chains were synthesized: 2,3,9,10,16,17,23,24-octakis(3,7-dimethyloctoxy)phthalocyanine (1a) and 2,3,9,10,16,17,23,24-octakis(3,7,11-trimethyldodecoxy)phthalocyanine (1b).Their mesomorphic properties were studied by DSC, polarization microscopy and X-ray diffraction.Compound 1a, which was initially crystalline at room temperature, maintains its mesomorphic structure on cooling back to room temperature.Compound 1b is mesomorphic at room temperature.It shows a Dho -> Dhd transition at 34 deg C and a transition of unknown nature at 173 deg C.Both compounds display a D -> I transition.Keywords: discotic liquid crystals, columnar mesophase, phthalocyanine