Defect Engineering Strategy for Superior Integration of Metal-Organic Framework and Halide Perovskite as a Fluorescence Sensing Material

Zhun-Xian Lai; Andi Magattang Gafur Muchlis; Ramadhass Keerthika Devi; Chen-Lung Chiang; Yi-Ting Syu; Yi-Ting Tsai; Cuo-Chi Lee; Chun Che Lin

doi:10.1021/acsami.4c00770

Defect Engineering Strategy for Superior Integration of Metal-Organic Framework and Halide Perovskite as a Fluorescence Sensing Material

ACS Appl Mater Interfaces. 2024 Apr 22. doi: 10.1021/acsami.4c00770. Online ahead of print.

Authors

Zhun-Xian Lai¹, Andi Magattang Gafur Muchlis¹, Ramadhass Keerthika Devi^{1

2}, Chen-Lung Chiang¹, Yi-Ting Syu¹, Yi-Ting Tsai¹, Cuo-Chi Lee³, Chun Che Lin^{1

4}

Affiliations

¹ Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 106334, Taiwan.
² Department of Biomedical Science, Chang Gung University, Taoyuan City 33302, Taiwan.
³ Department of Agricultural Science and Technology, Ministry of Agriculture, Taipei 100, Taiwan.
⁴ Research and Development Center for Smart Textile Technology, National Taipei University of Technology, Taipei 106334, Taiwan.

PMID: 38650171
DOI: 10.1021/acsami.4c00770

Abstract

Combining halide perovskite quantum dots (QDs) and metal-organic frameworks (MOFs) material is challenging when the QDs' size is larger than the MOFs' nanopores. Here, we adopted a simple defect engineering approach to increase the size of zeolitic imidazolate framework 90 (ZIF-90)'s pores size to better load CH₃NH₃PbBr₃ perovskite QDs. This defect structure effect can be easily achieved by adjusting the metal-to-ligand ratio throughout the ZIF-90 synthesis process. The QDs are then grown in the defective structure, resulting in a hybrid ZIF-90-perovskite (ZP) composite. The QDs in ZP composites occupied the gap of 10-18 nm defective ZIF-90 crystal and interestingly isolated the QDs with high stability in aqueous solution. We also investigated the relationship between defect engineering and fluorescence sensing, finding that the aqueous Cu²⁺ ion concentration was directly correlated to defective ZIF-90 and ZP composites. We also found that the role of the O-Cu coordination bonds and CH₃NHCu⁺ species formation in the materials when they reacted with Cu²⁺ was responsible for this relationship. Finally, this strategy was successful in developing Cu²⁺ ion fluorescence sensing in water with better selectivity and sensitivity.

Keywords: CH3NH3PbBr3 quantum dots; defect engineering; fluorescence sensing; halide perovskite; metal−organic framework; zeolitic imidazolate framework 90.