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Article Abstract
In this paper, chiral intermediate phases composed of two achiral molecules are fabricated by utilizing nanophase separation and molecular hierarchical self-organization. An achiral bent-core guest molecule, exhibiting a calamitic nematic and a dark conglomerate phase according to the temperature, is mixed with another achiral bent-core host molecule possessing a helical nanofilament to separate the phases between them. Two nanosegregated phases are identified, and considerable chiroptical changes, such as circular dichroism and circularly polarized luminescence, are detected at the transition temperatures between the different nanophase-separated states. The nanosegregated chiral phase-wherein the helical nanofilament and dark conglomerate phases are phase-separated-exhibits the highest chiroptical intensities. The luminescence dissymmetry factor, |g|, in this phase is amplified by an order of magnitude compared with that of another nanosegregated phase, wherein the helical nanofilament and nematic phases are phase-separated.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9736540 | PMC |
| http://dx.doi.org/10.3390/ijms232314629 | DOI Listing |
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- The study demonstrates a new method for activating CPLE in achiral luminogens by utilizing phase separation with helical filaments, which enhances their properties.
- The chiral environment created by nanoscale spaces allows the helical filaments to impart chirality to the otherwise CPLE-inactive luminogens, making this approach a simpler alternative to complex chemical synthesis.
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