H-bond-induced luminescence enhancement in a Pt1Ag30 nanocluster and its application in methanol detection

Silan Wang; Qinzhen Li; Sha Yang; Haizhu Yu; Jinsong Chai; Manzhou Zhu

doi:10.1039/d2nr03387a

H-bond-induced luminescence enhancement in a Pt₁Ag₃₀ nanocluster and its application in methanol detection

Nanoscale. 2022 Nov 17;14(44):16647-16654. doi: 10.1039/d2nr03387a.

Authors

Silan Wang¹, Qinzhen Li¹, Sha Yang¹, Haizhu Yu¹, Jinsong Chai¹, Manzhou Zhu¹

Affiliation

¹ Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology and Anhui Province Key, Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, 230601, China. chaijs@ahu.edu.cn.

PMID: 36321756
DOI: 10.1039/d2nr03387a

Abstract

Hydrogen bonding is an important type of interaction for constructing nanocluster assemblies. In this study, the role of hydrogen bonding interactions in regulating the fluorescence properties of nanoclusters is investigated. A [Pt₁Ag₃₀(SAdm)₁₄(Bdpm)₄Cl₅]³⁺ (Pt₁Ag₃₀ for short) nanocluster containing hydrogen-accepting ligands is synthesized and its structure is determined. By introducing N-containing ligands into nanoclusters, hydrogen bonding interactions between nanoclusters and polar solvents can be established, which can result in a 35-fold enhancement in the fluorescence intensity (in MeOH vs. in DCM). A series of experiments are designed to demonstrate hydrogen bonding interactions between N atoms in the Pt₁Ag₃₀ cluster and H in the polar solvent and the results show that fluorescence enhancement is derived from the proton-coupled/uncoupled electron transfer between hydrogen bonds. Furthermore, this Pt₁Ag₃₀ is used for the naked-eye detection of MeOH on indicator paper.