期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 5, 期 45, 页码 11927-11936出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7tc03959j
关键词
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资金
- EPSRC [EP/H004157/1, EP/L012294/1, EP/L017008/1, EP/L012200/1]
- European Research Council [321305]
- EPSRC [EP/H004157/1, EP/L012200/1, EP/L012294/1, EP/L017008/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/L017008/1, EP/L012294/1, EP/L012200/1, EP/H004157/1] Funding Source: researchfish
A series of copolymers containing the benzo[1,2-d: 4,5-d'] bis(thiazole) (BBT) unit has been designed and synthesised with bisthienyl-diketopyrrolopyrrole (DPP), dithienopyrrole (DTP), benzothiadiazole (BT), benzodithiophene (BDT) or 4,40-dialkoxybithiazole (BTz) comonomers. The resulting polymers possess a conjugation pathway that is orthogonal to the more usual substitution pathway through the 2,6-positions of the BBT unit, facilitating intramolecular non-covalent interactions between strategically placed heteroatoms of neighbouring monomer units. Such interactions enable a control over the degree of planarity through altering their number and strength, in turn allowing for tuning of the band gap. The resulting 4,8-BBT materials gave enhanced mobility in p-type organic field-effect transistors of up to 2.16 x 10(-2) cm(2) V-1 s(-1) for pDPP2ThBBT and good solar cell performance of up to 4.45% power conversion efficiency for pBT2ThBBT.
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