Preparation of cucurbit[5]uril-Ln3+- based supramolecular assemblies and its effective detection of L-Tryptophan

被引：0

作者：

Yang, Mengli ^{[1
,5
]}

Zhao, Jiang-Lin ^{[2
]}

Wang, Kui-Yuan ^{[3
,6
]}

Chen, Kai ^{[4
]}

机构：

[1] Hubei Engn Univ, Sch Chem & Mat Sci, Xiaogan 432000, Peoples R China

[2] Chinese Acad Sci, Zhuhai Inst Adv Technol, Precis Med R&D Ctr, Zhuhai 519080, Guangdong, Peoples R China

[3] Inst Zhejiang Univ Quzhou, 99 Zheda Rd, Quzhou 324000, Peoples R China

[4] Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Atmospher Environm & Equipm, Jiangsu Key Lab Atmospher Environm Monitoring & Po, Nanjing 210044, Peoples R China

[5] Jianghan Univ, Minist Educ, Key Lab Optoelect Chem Mat & Devices, Wuhan 430056, Peoples R China

[6] Zhejiang Univ, Coll Chem & Biol Engn, Hangzhou 310027, Peoples R China

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2025年 / 1322卷

关键词：

Cucurbit[5]uril; Rare-earth elements; Fluorescence probes; L-Tryptophan recognition; FLUORESCENT-PROBE; MOF;

D O I：

10.1016/j.molstruc.2024.140432

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

By introducing Co2+ ions as a structural inducer, we have successfully synthesized five new Ln3+-cucurbit[5]urilbased supramolecular assemblies within the cucurbit[5]uril (Q[5]) system with rare-earth elements (Pr3+, Sm3+, Eu3+, Gd3+ and Dy3+) by solvent evaporation method. A meticulous analysis of the crystal structure uncovers that the aforementioned assemblies constitute isomorphic 3D frameworks, which are stabilized through outersurface interactions of cucurbit[n]uril (OSIQ). Within these frameworks, Q[5] directly coordinates with rareearth metal ions to generate simple "Ln3+-Q[5]" molecular bowl structure. Six of these molecular bowls then arrange themselves to create a 3D honeycomb-like framework with channels occupied by the structure-guiding agent [Co(H2O)6]2+ through H-bond. Additionally, we explored the fluorescence sensing capabilities of the assembly 5 for amino acids, which indicate that it holds promise as a fluorescent sensor material, particularly for detecting L-Tryptophan (L-Try).

引用

页数：7