Journal
MACROMOLECULES
Volume 51, Issue 15, Pages 5883-5890Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.macromol.8b01077
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Funding
- NWO (TOP-PUNT) [10018944]
- Dutch Ministry of Education, Culture, and Science [024.001.035]
- Marie Sklodowska-Curie postdoctoral fellowship [704830]
- Marie Curie Actions (MSCA) [704830] Funding Source: Marie Curie Actions (MSCA)
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Chiral conjugated polymers bearing enantiopure side chains offer the possibility to harness the effect of chirality in organic electronic devices. However, its use is hampered by the low degree of circular polarization in absorption (g(abs)) in most of the conjugated polymer thin-films studied. Here we demonstrate a versatile method to significantly increase the g(abs) by using a few weight percentages of a commercially available achiral long-chain alcohol as an additive. This additive enhances the chiroptical properties in both absorption and emission by ca. 510 times in the thin-films. We envisage that the alcohol additive acts as a plasticizer which enhances the long-range chiral liquid crystalline ordering of the polymer chains, thereby amplifying the chiroptical properties in the thin-film. The application of this methodology to various conjugated polymers has been demonstrated.
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