Quinoidal thioalkyl-substituted bithiophene small molecule semiconductors for n-type organic field effect transistors

Autor:	Takeo Minari, Cheng Shiun Chen, Shueh Lin Yau, Vellaichamy Joseph, Chih Hsin Yu, Arulmozhi Velusamy, Cheng-Liang Liu, Chia Chi Lin, Wei Chieh Lien, Ping Yu Huang, Hsin Chia Tsai, Alfonsina Abat Amelenan Torimtubun, Ming Chou Chen, Gene-Hsiang Lee, Shih Hung Tung
Rok vydání:	2020
Předmět:	chemistry.chemical_classification Electron mobility Materials science General Chemistry Small molecule Organic semiconductor Crystallography chemistry.chemical_compound chemistry Materials Chemistry Side chain Thiophene Single crystal HOMO/LUMO Alkyl
Zdroj:	Journal of Materials Chemistry C. 8:15450-15458
ISSN:	2050-7534 2050-7526
DOI:	10.1039/d0tc03808c
Popis:	Two tetrathioalkyl-substituted bithiophene-based small molecule quinoids (TSBTQs) having different chain lengths (thio-hexyl and -decyl) are synthesized and applied as an n-type active component in organic field effect transistors (OFETs). The resulting two TSBTQs exhibit good solubility in various organic solvents and LUMO levels below −4.0 eV. The theoretical DFT calculation supported by single crystal structures confirms the π-conjugated backbone planarity due to the S(thiophene)⋯S(alkyl) non-covalent interaction. Optimized TSBQT-10 OFETs exhibit an electron mobility of 0.18 cm2 V−1 s−1, which is higher than that of TSBTQ-6 (0.09 cm2 V−1 s−1). The reliability of the OFETs under representative environmental and operational conditions is also determined. The effects of side chains including their lengths and contribution to the main chain π-system coplanarity presented here demonstrate an efficient method to manipulate the charge carrier mobility of the quinoidal organic semiconductors.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::31e60d02d8db71880811ed9bd633261c https://doi.org/10.1039/d0tc03808c Zobrazit plný text záznamu