New discoveries in chemical research and development in 2021. The appropriate choice of redox mediator can avoid electrode passivation and overpotential, which strongly inhibit the efficient activation of substrates in electrolysis.301353-96-8, Name is P7C3, molecular formula is C21H18Br2N2O. In an article, author is Liu, Guoqing,once mentioned of 301353-96-8, Category: benzoxazole.
Series of heterocyclic compounds containing ethynyl group, 2-[4-[2-[4-(alkoxy)phenyl]ethynyl]phenyl] -benzoxazole derivatives (nPEPBx), are prepared and investigated. They display enantiotropic nematic and smectic mesophases with large mesophase ranges of 30-133 degrees C (heating) and 31-141 degrees C (cooling). Compared with reference analogues without ethynyl group, the compounds nPEPBx roughly give lower melting points and much higher nematic mesophase stability because of the introduction of triple carbon-carbon bond. Meanwhile, they show much higher birefringence (Delta n, 0.50-0.65 and 0.55-0.68 for experimental and calculated values with density functional theory (DFT), respectively) than common tolane-based liquid crystals, which indicates that the introduction of benzoxazole unit is an effective method to enhance Delta n values of the rod-like molecule. It is concluded that nPEPBx has a potential application in liquid crystal mixture as a dopant to enhance the performance of the host mixture.
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Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem