A hydrostable 2D zinc-organic framework carrier used for loading of urea

• Published in: Journal of molecular structure 2022-01, Vol.1247, p.131408, Article 131408
• Main Authors: Qin, Liang, Ma, Deyun, Weng, Jintao, Wen, Chuying, Dong, Quanxin, Wu, Zhendong, Chen, Guanyi, Huang, Erwei, Chen, Yuxuan, Zheng, Jinluan, Deng, Qingyu
• Format: Article
• Language: English
• Subjects: Carrier; Hydrostable; Luminescence; Urea; Zinc-organic framework
• ISSN: 0022-2860; 1872-8014
• DOI: 10.1016/j.molstruc.2021.131408

•A new hydrostable 2D zinc-organic framework with open channels.•The first example of a new 2D MOF was used for urea delivery.•Luminescent property of 1 was explored. A hydrostable 2D porous urea carrier MOF, [Zn3(fdc)3(bpy)3(H2O)8]n·2(H2O) (1) (fdc = 2,5-furandicarboxylate, bpy = 4,4′-bipyridine) was successfully synthesized and structurally characterized. TGA and PXRD results show high thermal and water stability for the framework. 1 exhibits a 2D framework with the channels of 11.6 × 5.9 Å2 and 10.6 × 5.3 Å2, 10.6 × 6.1 Å2 along the b and c axis, respectively. Desolvated 1 (1a) adsorbs around 33.7 wt% of urea and the cumulative release value of urea at 48 h was about 97.8% in PBS (pH 7.4) at 37 °C. Furthermore, the luminescence property of 1 has also been investigated. A hydrostable 2D zinc-organic framework with open channels was synthesized based on 2,5-furandicarboxylate and 4,4′-bipyridine ligands and exhibited a 33.7 wt% urea payload. Furthermore, the luminescence of 1 in solid state at room temperature have also been investigated. [Display omitted]