62736-62-3Relevant academic research and scientific papers
Rich-colour mechanochromism of a cyanostilbene derivative with chiral self-assembly
Wen, Li,Sun, Jingwei,Li, Chengjian,Zhu, Chenfei,Zhang, Xi,Wang, Zhenbo,Song, Qingbao,Lv, Chunyan,Zhang, Yujian
, p. 11530 - 11535 (2021/07/11)
Mechanochromic luminophores exhibiting rich-colour transitions among multiple states have important potential applications, but few such compounds are known. Herein, chiral self-assembly fabrication is proposed as a valid method to realize a new type of metastable state, which may bring enriched PL colours. A novel chiral fluorophore,ACNS, was synthesized and assembled into helices with specific handedness, showing a tricolour photoluminescence (PL) transition among yellow, green and blue under grinding and other stimuli. The crystallineACNSpowder (B-phase) emits bright sky-blue light. Interestingly, the luminophore assembles into helical nanofibres (Y-phase) with specific handedness, which present yellow fluorescence at 539 nm. Moreover, upon grinding, both Y-phase and B-phase powder change into green-emitting powder (G-Phase) with a PL peak at 498 nm. This strategy is conceptually simple and affords a promising approach to the development of mechanochromic luminophores with multicolour fluorescence switching.
