Synthesis and Characterization of Thiophene-Containing Naphthalene Diimide n-Type Copolymers for OFET Applications

Abstract

Naphthalene diimide (NDI) copolymers are attractive n-type materials for use in organic electronic devices. Four highly soluble NDI polymers are presentedeach differing only in the thiophene content comprising the material. Electron mobilities as high as 0.076 cm2 V−1 s−1 for the novel material PNDI-3Th are reported. Polymer crystallinity and general macromolecular order are shown to effectively improve by increasing the number of thiophene units within the polymer backbone. The structure−property relationship of NDI−thiophene copolymers is presented and discussed as it pertains to organic field effect transistor (OFET) performance.

Conjugated Asymmetric Donor‐Substituted 1,3,5‐Triazines: New Host Materials for Blue Phosphorescent Organic Light‐Emitting Diodes

“…The fascination of donor-acceptor (D-A, or p-n) architectures [1] has been widely recognized in the design of organic optoelectronic materials for organic light emitting diodes (OLED), [2] organic photovoltaics (OPV), [3] sensors, [4] organic field-effect transistor (OFET), [5] non-linear optics (NLO), magnetic materials, [6] and many more. [7] Plenty of organic donors have been developed for this design of functional materials due to the electron-rich feature of the p-conjugated systems.…”

Organic Semiconductors for Field-Effect Transistors

“…Upon the polymer, the relationship between dielectric layers, morphology (molecule packing), device geometry, and electron transport was widely studied. In 2010, Luscombe et al further synthesized another three NDI-based polymers differing only in the number of thiophene units, being zero, one, and three [388]. Of these, polymer 310-based FETs with bottom gate top contact configuration afforded the highest electron mobility of 0.076 cm 2 V −1 s −1 , whereas 309-based FETs showed a mobility of 0.039 cm 2 V −1 s −1 with the same device geometry.…”

Optoelectronic properties of thiazole‐based polythiophenes

“…Throughout sometime, many studies have focused on electrochemical copolymerization where copolymerization of thiophene with fluorene, 26,27 selenophene, 28 naphthalene dimide, 29 binaphthyl, 30 thiazole, 31 pyridine, and quinoxaline 32 was achieved. With these efforts, numerous novel conducting polymers have been prepared with distinct superior properties, such as enhanced electrical conductivity and electrochemical activity, fine tuning of band gap, and color of the polymer.…”