Circularly Polarized Laser Emission from Homochiral Superstructures based on Achiral Molecules with Conformal Flexibility
| العنوان: | Circularly Polarized Laser Emission from Homochiral Superstructures based on Achiral Molecules with Conformal Flexibility |
|---|---|
| المؤلفون: | Zheng‐Fei Liu, Jiahuan Ren, Pan Li, Li‐Ya Niu, Qing Liao, Shaodong Zhang, Qing‐Zheng Yang |
| المصدر: | Angewandte Chemie. 135 |
| بيانات النشر: | Wiley, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | General Chemistry, General Medicine, Catalysis |
| الوصف: | Without external chiral intervention, it is a challenge to form homochirality from achiral molecules with conformational flexibility. We here report on a rational strategy that uses multivalent noncovalent interactions to clamp the molecular conformations of achiral D-A molecules. These interactions overcome the otherwise dominant dipole-dipole interactions and thus disfavor their symmetric antiparallel stacking. It in turn facilitates parallel packing, leading to spontaneous symmetry breaking during crystallization and thus the formation of homochiral conglomerates. When this emergent homochirality is coupled with optical gain characteristics of the molecules, the homochiral crystals are explored as excellent circularly polarized micro-lasers with low lasing threshold (16.4 μJ cm |
| تدمد: | 1521-3757 0044-8249 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::934a0830487ed44fcf338b477405996c https://doi.org/10.1002/ange.202214211 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....934a0830487ed44fcf338b477405996c |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15213757 00448249 |
|---|