Abstract
Direct C-H arylation is an approximate tool for synthesis of thiophene-diketopyrrolopyrrole (DPP) derivatives, because of better atomic economy, fewer synthetic steps and being environmental friendly. In this work, DPP containing linear structured small molecule TBT(DPPT 2 ) 2 are facilely synthesized in high yield by the C-H direct arylation, other small molecule TBT(DPP) 2 are synthesized thought stille cross-crouping reaction. Thermal, optimized geometries, electrochemical, photo-physical properties and film morphology of two materials are studied and solution-coated organic field effect transistors (OFETs) are preparated. TBT(DPPT 2 ) 2 have wider band gaps and enhanced electronic defects compare to TBT(DPP) 2 . Both TBT(DPP) 2 and TBT(DPPT 2 ) 2 demonstrated typical p-type transport with average hole mobility of 1.26 × 10 −3 and 9.58 × 10 -4 cm 2 V -1 s -1 respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 94-98 |
| Number of pages | 5 |
| Journal | Synthetic Metals |
| Volume | 250 |
| DOIs | |
| State | Published - Apr 2019 |
| Externally published | Yes |
Keywords
- Benzothiadiazole
- Diketopyrrolopyrrole
- Direct C-H arylation
- Organic field effect transistors
- Organic semiconductor materials
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