1.
ACS Appl Mater Interfaces
; 15(21): 25783-25790, 2023 May 31.
Artículo
en Inglés
| MEDLINE
| ID: mdl-37199708
RESUMEN
In this paper, planar chiral helicenes based on [2.2]paracyclophane PCPH5 acted as both chiral inducers and energy donors to construct the circularly polarized luminescence (CPL)-active ternary cholesteric liquid crystals (T-N*-LCs) in a commercial nematic liquid crystal (SLC1717, N-LCs) medium. Induced red CPL emission based on the energy acceptor of the achiral polymer DTBTF8 could be successfully promoted by the intermolecular Förster resonance energy transfer mechanism. The resulting T-N*-LCs can generate intensive CPL signals with glum up to +0.70/-0.67. Interestingly, this kind of "on-off" CPL switching of T-N*-LCs can be manipulated by the applied direct current electric field.