Abstract
The structures, optical properties, thin-film and single-crystal field-effect transistor performance of three thiophene-based hybrid materials, 5-(9-butyl-3-carbazolyl)terthiophene (BCTT), 2,5-bis(9-butyl-3-carbazolyl)thiophene (BBCT) and 2-(9-butyl-3-carbazolyl)-5-(2-dibenzothienyl)thiophene (BCDT), are reported. The structural modifications at one side of thiophene have significant effects on the intermolecular interaction, morphology and carrier-transport properties. The adjacent molecules in the solid state of BCTT adopt H aggregation, while compounds BBCT and BCDT both exhibit the formation of J aggregation. In BCTT, the crystal structure features a herringbone motif. The hole mobility for the single-crystal field-effect transistor based on BCTT reaches 0.094 cm2 V-1 s-1, which is much higher than those of BBCT and BCDT. This study reveals that the enhanced rigidity in the molecules of BBCT and BCDT is not favorable to carrier transport.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 910-917 |
| Number of pages | 8 |
| Journal | Organic Electronics |
| Volume | 10 |
| Issue number | 5 |
| DOIs | |
| State | Published - Aug 2009 |
Bibliographical note
Funding Information:We thank the State National Natural Science Foundation of China (Grant Nos. 50721002, 50590403, 90401028, 50673003) and 973 program of PR China (Grant Nos. 2004CB619002) for financial support.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
Keywords
- Hybrid materials
- Morphology
- Single-crystal field-effect transistor
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