Synthesis of Dinaphtho[2,3-d:2',3'-d']anthra[1,2-b:5,6-b']dithiophene (DNADT) Derivatives: Effect of Alkyl Chains on Transistor Properties.

ABSTRACT: To investigate organic field-effect transistor (OFET) properties, a new thienoacene-type molecule, 4,14-dihexyldinaphtho[2,3-d:2',3'-d']anthra[1,2-b:5,6-b']dithiophene (C6-DNADT), consisting of π-conjugated nine aromatic rings and two hexyl chains along the longitudinal molecular axis has been successfully synthesized by sequential reactions, including Negishi coupling, epoxidation, and cycloaromatization. The fabricated OFET using thin films of C6-DNADT exhibited p-channel FET properties with field-effect mobilities (µ) of up to 2.6 × 10-2 cm2 V-1 s-1, which is ca. three times lower than that of the parent DNADT molecule (8.5 × 10-2 cm2 V-1 s-1). Although this result implies that the installation of relatively short alkyl chains into the DNADT core is not suitable for transistor applicati

SUBMITTER: Ishida T 

PROVIDER: S-EPMC7177802 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature