Oligothiophenes bearing polar groups for organic thin film transistors: synthesis, characterisation and preliminary gas sensing results

Author

Aquila, Antonio Dell ; Mastrorilli, Piero ; Nobile, Cosimo Francesco ; Romanazzi, Giuseppe ; Suranna, Gian Paolo ; Torsi, Luisa ; Tanese, Maria Cristina ; Marinelli, Francesco ; Acierno, Domenico ; Amendola, Eugenio ; Morales, Piero ; Mhaisalkar, Subodh

Author_Institution

Polytech of Bari, Bari

fYear

2007

fDate

26-27 June 2007

Firstpage

1

Lastpage

4

Abstract

The properties of a series of sexithiophenes bearing amide or ester functionalities in the alpha,omega-positions are reported. Isolation of the ester functionalities from the sexithiophene core by an ethylene spacer led to a device with moderate hole mobilities (1.2-10^-2 cm²V^-1s^-1) and on/off ratios (10³). A bottom contact device based on this sexithiophene showed a good response to a 5 ppm NO atmosphere, encouraging future studies on gas sensing OTFT based on these polar-functionalised OTFT.

Keywords

gas sensors; thin film transistors; bottom contact device; ester functionalities; gas sensing; oligothiophenes bearing polar groups; organic thin film transistors; sexithiophenes bearing amide; Biomedical engineering; Biomedical materials; Chemical processes; Chemical sensors; Chemistry; Materials science and technology; OFETs; Organic chemicals; Organic thin film transistors; Thin film transistors;

fLanguage

English

Publisher

ieee

Conference_Titel

Advances in Sensors and Interface, 2007. IWASI 2007. 2nd International Workshop on

Conference_Location

Bari

Print_ISBN

978-1-4244-1245-7

Electronic_ISBN

978-1-4244-1245-7

Type

conf

DOI

10.1109/IWASI.2007.4420039

Filename

4420039