期刊
MATERIALS ADVANCES
卷 3, 期 1, 页码 328-336出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ma00452b
关键词
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资金
- NSERC of Canada Discovery Grants program [RGPIN-2019-04851]
- NSERC PGS-D program
- Alberta Innovates
- NSERC [RGPIN-2017-03732]
- University of Saskatchewan
- Canada Research Chair program.
- NSERC
- CFI
- Government of Saskatchewan
- Western Economic Diversification Canada
- National Research Council Canada
- Canadian Institutes of Health Research
The study describes a synthetic approach to achieving columnar stacked mesogens of aromatic electron donors and acceptors, which can segregate charge transport channels in films. The use of different shapes in the D-A-D arrangement limits D-A interactions and leads to an increased photocurrent generation rate compared to amorphous films.
We describe a synthetic approach to achieving columnar stacked mesogens of aromatic electron donors (D) and acceptors (A) as an orthogonal strategy to segregate charge carrying channels in films. An unusual columnar liquid crystalline mesogen was designed, such that a planar naphthalenediimide acceptor flanked by two bent-shaped phenothiazine donor moieties self-assembled into a liquid crystalline phase. The use of different shapes in the D-A-D arrangement could allow segregated charge transport columns, thus limiting both intercolumnar and intramolecular D-A interactions. In solution, the mesogen showed independent optical and electronic properties of its constituent D and A components and annealed films of the columnar liquid crystalline material showed a near doubling of photocurrent generation compared to amorphousfilms.
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