- Title
- Vinylene and benzo[c][1,2,5]thiadiazole: effect of the pi-spacer unit on the properties of bis(2-oxoindolin-3-ylidene)-benzodifuran-dione containing polymers for n-channel organic field-effect transistors
- Creator
- Thu, Thu Trang; Patil, Basanagouda B.; Singh, Samarendra P.; Yambem, Soniya D.; Feron, Krishna; Ostrikov, Kostya (Ken); Bell, John M.; Sonar, Prashant
- Relation
- RSC Advances Vol. 8, Issue 68, p. 38919-38928
- Publisher Link
- http://dx.doi.org/10.1039/c8ra08890j
- Publisher
- Royal Society of Chemistry
- Resource Type
- journal article
- Date
- 2018
- Description
- wo polymers based on (3E,7E)-3,7-bis(2-oxoindolin-3-ylidene)benzo[1,2-b:4,5-b′]difuran-2,6(3H,7H)-dione (BIBDF) coupled with (E)-2-(2-(thiophen-2-yl)vinyl)thiophene (TVT) or dithienylbenzothiadiazole (TBT), namely PBIBDF-TVT and PBIBDF-TBT were synthesized via the Stille coupling reaction. The effect of benzothiadiazole or vinylene-π spacer of the copolymers on optical properties, energy levels, electronic device performance and microstructure were studied. It was found that PBIBDF-TBT based OFET devices, annealed at 180 °C, showed better performance with the highest electron mobility of 2.9 × 10−2 cm2 V s−1 whereas PBIBDF-TVT polymer exhibited 5.0 × 10−4 cm2 V s−1. The two orders of magnitude higher electron mobility of PBIBDF-TBT over PBIBDT-TVT is a clear indicator of the better charge transport ability of this polymer semiconductor arising from its higher crystallinity and better donor–acceptor interaction.
- Subject
- vinylene-pi spacer; polymer; PBIBDF-TVT; PBIBDF-TBT; electron mobility
- Identifier
- http://hdl.handle.net/1959.13/1398343
- Identifier
- uon:34418
- Identifier
- ISSN:2046-2069
- Rights
- This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
- Language
- eng
- Full Text
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