02124nas a2200253   4500008004100000022001400041245012300055210006900178260011000247300001600357490000600373520114700379100002301526700002001549700002001569700002101589700002101610700002101631700002801652700002101680700001801701700002401719856012701743       2016                        eng d  a2046-206900aModulation of charge carrier mobility by side-chain engineering of bi(thienylenevinylene)thiophene containing PPE-PPVs0 aModulation of charge carrier mobility by sidechain engineering o  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcMAY  a51642-516480 v63 a<p>Four 2-dimensional conjugated poly(p-phenylene-ethynylene)-alt-poly(p-phenylene-vinylene) polymers containing a lateral bi(thienylenevinylene)thiophene unit (BTE-PVs) were synthesised and characterised. The investigated polymers share the same conjugated structure, but differ in the anchoring positions of solubilising linear octyloxy/branched 2-ethylhexyloxy side-chains. UV-vis spectra of the polymers in dilute chloroform solutions and as thin films were studied. X-Ray diffraction patterns as well as the bulk charge transport of polymer films cast from chlorobenzene solutions were also investigated. A dramatic effect of the solubilising side-chains on the charge carrier mobility of BTE-PV films was observed, with bulk hole mobility values ranging between 1.3 x 10(-5) cm(2) V-1 s(-1) and 2.2 x 10(-2) cm(2) V-1 s(-1), which is not ascribable to evident structural variations of the polymer films. It is shown that the combination of linear octyloxy and branched 2-ethylhexyloxy side-chains is favorable for the charge transport properties of BTE-PVs, compared to the incorporation of only linear or only branched side-chains.</p>1 aJadhav, Rupali, R.1 aCamaioni, Nadia1 aOppelt, Kerstin1 aTinti, Francesca1 aGazzano, Massimo1 aFattori, Valeria1 aWadgaonkar, Prakash, P.1 aRathgeber, Silke1 aHoppe, Harald1 aEgbe, Daniel, A. M.  uhttps://library.ncl.res.in/content/modulation-charge-carrier-mobility-side-chain-engineering-bithienylenevinylenethiophene