| Title: |
High Electron Charge Carrier Mobility in the Nematic Phase of a Roof-Shaped Nematogen with Optimum Molecular Biaxiality |
| Authors: |
Lehmann, M.; Scheuring, N.; Mager, L.; Singh, D.P.; Mandle, R.; Eremin, A. |
| Publisher Information: |
Wiley |
| Publication Year: |
2025 |
| Collection: |
White Rose Research Online (Universities of Leeds, Sheffield & York) |
| Description: |
A roof-shaped molecule forming exclusively a nematic liquid crystal phase is prepared based on a lead structure. The aspect ratio is designed to be almost optimum with respect to the molecular biaxiality. A broad nematic phase over more than 100 K is observed in which a weak, transient biaxial alignment can be induced under specific thermal and mechanical conditions. In sandwich cells, TOF electron mobilities of up to 2.2 × 10‾² cm² V‾¹ s‾¹ are obtained, which are the highest found to date for nematic materials. The latter is attributed to the special self-assembly of the biaxial, roof-shaped mesogens, which favors the contacts between the aromatic units, which is confirmed by X-ray scattering, modeling, and X-ray scattering simulation. The material is responsive to the applied electric field, which results in the anomalous negative field dependence of the charge carrier mobilities. |
| Document Type: |
article in journal/newspaper |
| File Description: |
text |
| Language: |
English |
| ISSN: |
2198-3844 |
| Relation: |
https://eprints.whiterose.ac.uk/id/eprint/230438/1/Advanced%20Science%20-%202025%20-%20Lehmann%20-%20High%20Electron%20Charge%20Carrier%20Mobility%20in%20the%20Nematic%20Phase%20of%20a%20Roof%E2%80%90Shaped%20Nematogen.pdf; Lehmann, M., Scheuring, N., Mager, L. et al. (3 more authors) (2025) High Electron Charge Carrier Mobility in the Nematic Phase of a Roof-Shaped Nematogen with Optimum Molecular Biaxiality. Advanced Science. e10009. ISSN: 2198-3844 |
| DOI: |
10.1002/advs.202510009 |
| Availability: |
https://eprints.whiterose.ac.uk/id/eprint/230438/; https://advanced.onlinelibrary.wiley.com/doi/10.1002/advs.202510009 |
| Rights: |
cc_by_4 |
| Accession Number: |
edsbas.C7A9E9BF |
| Database: |
BASE |