Butterfly-Like Triarylamines with High Hole Mobility and On/Off Ratio in Bottom-Gated OFETs

Panneerselvam Devibala; Balu Balambiga; Predhanekar Mohamed Imran; Nattamai S P Bhuvanesh; Samuthira Nagarajan

doi:10.1002/chem.202102568

Butterfly-Like Triarylamines with High Hole Mobility and On/Off Ratio in Bottom-Gated OFETs

Chemistry. 2021 Nov 5;27(62):15375-15381. doi: 10.1002/chem.202102568. Epub 2021 Oct 4.

Authors

Panneerselvam Devibala¹, Balu Balambiga¹, Predhanekar Mohamed Imran², Nattamai S P Bhuvanesh³, Samuthira Nagarajan¹

Affiliations

¹ Organic Electronics Division, Department of Chemistry Central University of Tamil Nadu, Thiruvarur, 610005, India.
² Department of Chemistry, Islamiah College, Vaniyambadi, 635752, India.
³ Department of Chemistry, Texas A&M University College Station, Texas, 77842, USA.

PMID: 34536306
DOI: 10.1002/chem.202102568

Abstract

Highly π-extended butterfly-shaped triarylamine dyads with aryleneethynylene spacer were constructed using an efficient synthetic route. These aryleneethynylene-bridged dyads are highly fluorescent and exhibited high HOMO levels, and low bandgaps, which are suitable for high-performance p-type OFETs. The field-effect transistors were fabricated through a solution-processable method and exhibited promising p-type performance with field-effect mobility up to 4.3 cm² /Vs and high I_on/off of 10⁸ under ambient conditions.

Keywords: OFET; aryleneethynylene; organic electronics; spacers; triarylamine.