01989nas a2200229   4500008004100000245012500041210006900166260000800235300001200243490000800255520117600263100001801439700001601457700001601473700003001489700002001519700002301539700002401562700002101586700002101607856013101628       2016                        eng d00aRole of acceptor strength on OFET properties of small molecular organic semiconducting materials with D-A-D architecture0 aRole of acceptor strength on OFET properties of small molecular   cOCT  a236-2460 v2203 aTwo organic semiconducting materials 2,5-didodecyl-3,6-bis(4-(11-dodecyl-11H-benzo[a]carbazol-8yl)phenyl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione. (BCDPP) and 1,5-didodecyl-3,7-bis(4-(11-dodecyl-11H-benzo[a]carbazol-8-yl)phenyl)dipyrrolo[3,2-b:3',2'-e]pyrazine-2,6(1H,5H)-dione (BCPzDP) with D-A-D architecture have been designed, synthesized and well characterized. Both the materials have benzocarbazole donor end-capping units. While BCDPP contains well explored diketopyrrolopyrrole (DPP), BCPzDP possesses electron deficient dipyrrolopyrazinedione (PzDP) as acceptor moiety. The importance of the nature of acceptor moiety in tuning the charge transport properties of the synthesized materials is explored. Thermal, photo-physical and electrochemical properties of these materials are measured and solution processed OFETs are fabricated. OFETs with BCDPP show unipolar p-type semiconducting properties with hole mobility of 1.02 x 10(-4) cm(2) V-1 s(-1) and OFETs of BCPzDP exhibit ambipolar charge transport behaviour with optimal saturation hole and electron mobilities of 0.0054 and 0.0013 cm(2) V-1 s(-1), respectively. (C) 2016 Elsevier B.V. All rights reserved.1 aSasikumar, M.1 aBharath, D.1 aKumar, Siva1 aChereddy, Narendra, Reddy1 aChithiravel, S.1 aKrishnamoorthy, K.1 aShanigaram, Balaiah1 aBhanuprakash, K.1 aRao, Jayathirtha  uhttps://library.ncl.res.in/content/role-acceptor-strength-ofet-properties-small-molecular-organic-semiconducting-materials-d-d