The DOI matches its Crossref record; 75 of the 75 references it cites were found in a registry or an index.
Aggregation in a High-Mobility n-Type Low-Bandgap Copolymer with Implications on Semicrystalline Morphology
Abstract
We explore the photophysics of P(NDI2OD-T2), a high-mobility and air-stable n-type donor/acceptor polymer. Detailed steady-state UV-vis and photoluminescence (PL) measurements on solutions of P(NDI2OD-T2) reveal distinct signatures of aggregation. By performing quantum chemical calculations, we can assign these spectral features to unaggregated and stacked polymer chains. NMR measurements independently confirm the aggregation phenomena of P(NDI2OD-T2) in solution. The detailed analysis of the optical spectra shows that aggregation is a two-step process with different types of aggregates, which we confirm by time-dependent PL measurements. Analytical ultracentrifugation measurements suggest that aggregation takes place within the single polymer chain upon coiling. By transferring these results to thin P(NDI2OD-T2) films, we can conclude that film formation is mainly governed by the chain collapse, leading in general to a high aggregate content of ~45%. This process also inhibits the formation of amorphous and disordered P(NDI2OD-T2) films.
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Cites
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Cited by
Polymer donor–polymer acceptor (all-polymer) solar cells
Facchetti, A. (2013) · Materials Today · doi:10.1016/j.mattod.2013.04.005 · Cited by 688
Self-citationZhu, C., Zhao, Z., Chen, H., Zheng, L., Li, X., Chen, J., Sun, Y., Liu, F., Guo, Y., & Liu, Y. (2017) · Journal of the American Chemical Society · doi:10.1021/jacs.7b10256 · Cited by 126
Metadata
- Authors
- Steyrleuthner, R., Schubert, M., Howard, I., Klaumünzer, B., Schilling, K., Chen, Z., Saalfrank, P., Laquai, F., Facchetti, A., & Neher, D.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2012-10-24
- Volume
- 134
- Issue
- 44
- Pages
- 18303-18317
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W1985119501
- Cited by
- 458
- References
- 75
- FWCI
- 20.14
- Type
- journal article
- Language
- en
- Open access
- closed
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