title: Synthesis and Molecular Properties of Two Isomeric Dialkylated Tetrathienonaphthalenes.
abstract: Isomeric 2,8-distannyl 5,11-didodecyl αβ-TTN (1, tetrathienonaphthalene = TTN) and 2,8-didodecyl 5,11-distannyl αβ-TTN (2) have been designed and successfully synthesized. The naphthalene core structures in αβ-TTNs were constructed by a systematic protocol using PtCl2-catalyzed cyclization followed by oxidative Scholl annulation in good yields. Compared to the one-dimensional naphthodithiophene derivatives, the two-dimensional αβ-TTN molecules showed good solubility, extended conjugation, strong absorptivity, and highly coplanar structures. Compounds 1 and 2 were polymerized with a 5,5'-dibromo-2,2'-bithiophene-based monomer to afford 2,8-αβ-PTTNTT and 5,11-αβ-PTTNTT copolymers. 2,8-αβ-PTTNTT with the α-aNDT moiety in the main chain exhibited a higher hole mobility of 1.26 × 10(-2) cm(2) V(-1) s(-1).
authors.affiliation: Department of Applied Chemistry, National Chiao Tung University , 1001 University Road, Hsin-Chu, Taiwan.
authors.forename: Shao-Ling
authors.initials: SL
authors.lastname: Chang
authors.affiliation: Department of Applied Chemistry, National Chiao Tung University , 1001 University Road, Hsin-Chu, Taiwan.
authors.forename: Chih-Wen
authors.initials: CW
authors.lastname: Lu
authors.affiliation: Department of Applied Chemistry, National Chiao Tung University , 1001 University Road, Hsin-Chu, Taiwan.
authors.forename: Yu-Ying
authors.initials: YY
authors.lastname: Lai
authors.affiliation: Department of Applied Chemistry, National Chiao Tung University , 1001 University Road, Hsin-Chu, Taiwan.
authors.forename: Jhih-Yang
authors.initials: JY
authors.lastname: Hsu
authors.affiliation: Department of Applied Chemistry, National Chiao Tung University , 1001 University Road, Hsin-Chu, Taiwan.
authors.forename: Yen-Ju
authors.initials: YJ
authors.lastname: Cheng