Functionalization of spiro[fluorene-9,9′-xanthene] with diketopyrrolopyrrole to generate a promising, three-dimensional non-fullerene acceptor
- Publisher:
- Royal Society of Chemistry
- Publication Type:
- Journal Article
- Citation:
- Materials Chemistry Frontiers, 2020, 4, (11), pp. 3209-3215
- Issue Date:
- 2020-11-01
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d0qm00515k.pdf | 3.78 MB |
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A spiro[fluorene-9,9′-xanthene], often described as a "low-cost spiro,"has been functionalized with terminal diketopyrrolopyrrole units to generate a promising, three-dimensional non-fullerene acceptor. The new acceptor, coded as SFX1, was readily synthesized using the Suzuki cross-coupling reaction and was sufficiently soluble in a variety of commonly used, film-processing solvents such as chlorobenzene and o-dichlorobenzene. SFX1 displayed promising optoelectronic properties and the HOMO/LUMO energy levels complementary to the commercially available and commonly used donor polymers P3HT and PTB7. The joining of two high-potential building blocks-the spiro[fluorene-9,9′-xanthene] and diketopyrrolopyrrole-demonstrates a new strategy where the device performance [D : A 1 : 1.2 = 9.42% (D = PTB7)] validates its use as a potential, three-dimensional non-fullerene acceptor.
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