A multifunctional supramolecular assembly based on cucurbit[7]uril: White light material and Fe(CN)63- detection

Jia-Yi Zhang; Jian-Hang Hu; Qing Li; Zhi-Nian Liu; Ding-Wu Pan; Yu Xiong; Run-Xin Hou; Li Wu; Zhu Tao; Xin Xiao

doi:10.1016/j.saa.2023.123165

A multifunctional supramolecular assembly based on cucurbit[7]uril: White light material and Fe(CN)₆^3- detection

Spectrochim Acta A Mol Biomol Spectrosc. 2023 Dec 15:303:123165. doi: 10.1016/j.saa.2023.123165. Epub 2023 Jul 20.

Authors

Jia-Yi Zhang¹, Jian-Hang Hu¹, Qing Li², Zhi-Nian Liu¹, Ding-Wu Pan³, Yu Xiong¹, Run-Xin Hou¹, Li Wu¹, Zhu Tao¹, Xin Xiao⁴

Affiliations

¹ Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Institute of Applied Chemistry, Guizhou University, Guiyang 550025, China.
² Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Institute of Applied Chemistry, Guizhou University, Guiyang 550025, China. Electronic address: liq@gzu.edu.cn.
³ Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Institute of Applied Chemistry, Guizhou University, Guiyang 550025, China. Electronic address: dwpan@gzu.edu.cn.
⁴ Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Institute of Applied Chemistry, Guizhou University, Guiyang 550025, China. Electronic address: xxiao@gzu.edu.cn.

PMID: 37490841
DOI: 10.1016/j.saa.2023.123165

Abstract

White light emitting materials have broad application prospects in fields such as displays, lighting devices, etc., but developing such materials faces considerable challenges. In this study, 1,3,5-tris[4-(pyridine-4-butyl)phenyl]benzene derivative (BTPY) was synthesized and a supramolecular assembly with AIE properties named BTPY@Q[7] was prepared with cucurbit[7]uril (Q[7]). Furthermore, by adding rhodamine 6G (R6G) to it, and controlling its ratio with R6G, a dual-emission white light system (0.33, 0.33) was synthesized and used for white light emitting materials as well as anti-counterfeiting fields. In addition, based on the BTPY@Q[7]-R6G system, a light harvesting system in aqueous phase was constructed, with an energy transfer efficiency (Φ_ET) of 26.19 % and an antenna effect (AE) of 10.21. Interestingly, the supramolecular self-assembly can also be used as a fluorescent probe, specifically recognize Fe(CN)₆^3- ions in water, with a detection limit of 2.5 × 10^-8 M.

Keywords: Artificial light-harvesting system; Cucurbit[n]uril; Host-guest interaction; Supramolecular assembly; White light emitting.