نتایج جستجو برای: phenylenes
تعداد نتایج: 58 فیلتر نتایج به سال:
Poly-p-phenylenes (PPs) are prototype systems for understanding the charge transport in π-conjugated polymers. In a combined computational and experimental study, we demonstrate that the smooth evolution of redox and optoelectronic properties of PP cation radicals toward the polymeric limit can be significantly altered by electron-donating iso-alkyl and iso-alkoxy end-capping groups. A multipar...
A series of 1,4-phenylenes X-C(6)H(4)-BDB with a 1,3,2-benzodiazaborolyl (BDB) and a phosphorus based end group [X = PPh(2) (2), P(O)Ph(2) (3), P(S)Ph(2) (4), P(Se)Ph(2) (5), P(AuCl)Ph(2) (6) and P(Me)Ph(2) (7)] as well as 2-(2')thienyl-1,3,2-benzodiazaboroles with a second end group X [X = PPh(2) (8), P(S)Ph(2) (9), P(Se)Ph(2) (10) and P(Me)Ph(2) (11)] in the 5' position were synthesised using...
There are numerous examples of achiral or dynamically racemic molecules that generate chirality in one-, two-, or threedimensional crystals, polymers, liquid crystal or supramolecular assemblies. Such systems are particularly attractive for investigating asymmetric induction (i.e. mirror symmetry breaking) and chiral amplification. These conglomerate forming systems typically yield a stochastic...
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