Host-guest interaction-directed strategy for managing mechanochromic luminescence behavior by modulating molecular packing and conformation was written by Han, Xie;Sun, DongDong;Tang, Shi;Wu, Yong;Wang, Luyao;Zhang, Xiongzhi;Liu, Simin. And the article was included in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices in 2021.SDS of cas: 626-64-2 This article mentions the following:
Developing a simple strategy to precisely modulate the mechanochromic luminescence (MCL) behavior of fluorophores is of great significance in understanding their structure-property relationship and promoting their potential application. Herein, we report a donor-acceptor (D-A) mol. 1-(7-nitrobenz-2-oxa-1,3-diazol-4-yl)pyridin-4-one (NBDP), which shows a bathochromic shift of fluorescence upon grinding. Interestingly, when NBDP is absorbed by cucurbit[8]uril (CB[8]) solid, the formed NBDP@CB[8] complex exhibits an unexpected hypsochromic shift. Detailed spectroscopic and structural analyses suggest that mol. packing and conformation change induced by host-guest interactions are responsible for the distinct luminescence response. This strategy is both conceptually and synthetically simple and offers a promising approach for the construction of new MCL systems. In the experiment, the researchers used many compounds, for example, Pyridin-4-ol (cas: 626-64-2SDS of cas: 626-64-2).
Pyridin-4-ol (cas: 626-64-2) belongs to pyridine derivatives. Pyridine’s the lone pair does not contribute to the aromatic system but importantly influences the chemical properties of pyridine, as it easily supports bond formation via an electrophilic attack. Pyridine derivatives are also useful as small-molecule α-helix mimetics that inhibit protein-protein interactions, as well as functionally selective GABA ligands.SDS of cas: 626-64-2