Synthesis, characterization, and luminescent temperature sensing of two resorcin[4]arene-based Zn(II) coordination polymers

• Published in: Inorganica Chimica Acta 2022-07, Vol.537, p.120930, Article 120930
• Main Authors: Zhao, Si-Si, Liu, Tong, Zhang, Hang, Yang, Yong-Sheng, Tian, Peng, Li, Wen-Cui, Zhao, Zhen
• Format: Article
• Language: English
• Subjects: Cationic polymerization; Coordination polymers; d10 metal; Luminescent temperature sensing; Resorcinarene; Temperature sensors; Zinc
• ISSN: 0020-1693; 1873-3255
• DOI: 10.1016/j.ica.2022.120930

Currently, luminescent coordination polymers (CPs) have received increasing interest because of their huge superiority in unique photophysical properties. In this paper, two Zn(II) CPs namely, [(CH3)2NH2][Zn4(L1)(μ3-OH)(H2O)]·DMF (1) and [(CH3)2NH2]2[NaZn3(L2)(μ2-OH)(H2O)]·2H2O (2) assembled by octacarboxylate-based resorcin[4]arene ligands were synthesized and characterized, where their demonstrate potential luminescent temperature sensors with good linear relationship between the intensity and temperature. [Display omitted] •Two Zn(II) coordination polymers with resorcin[4]arene ligands have been synthesized.•These two CPs exhibit unique two dimensional (2D) framework.•The luminescence property was investigated by two CPs as luminescent thermometers. The assemblies of two octacarboxylate-functionalized resorcin[4]arene and Zn2+ cations produce two coordination polymers, namely, [(CH3)2NH2][Zn4(L1)(μ3-OH)(H2O)]·DMF (1) and [(CH3)2NH2]2[NaZn3(L2)(μ2-OH)(H2O)]·2H2O (2). 1 and 2 show two dimensional (2D) frameworks. Remarkably, 1 and 2 produce intensive blue emissions and long lifetimes owing to d10 metals of Zn and resorcin[4]arene based ligands. More importantly, the intensity-based luminescence reveals that 1 and 2 are extremely more linear with temperature, indicating that they can be applied for potential temperature sensors.