Preprint Article Version 1 This version is not peer-reviewed

Diphenylamino-Modified Neutral Pt(II) Complexes: Their Aggregation-Induced Phosphorescent Emission and Picric Acid Sensing Properties

Version 1 : Received: 10 August 2024 / Approved: 10 August 2024 / Online: 12 August 2024 (05:20:32 CEST)

How to cite: Zhang, Q.; Yan, Y.; Cai, R.; Li, X.-N.; Liu, C. Diphenylamino-Modified Neutral Pt(II) Complexes: Their Aggregation-Induced Phosphorescent Emission and Picric Acid Sensing Properties. Preprints 2024, 2024080745. https://doi.org/10.20944/preprints202408.0745.v1 Zhang, Q.; Yan, Y.; Cai, R.; Li, X.-N.; Liu, C. Diphenylamino-Modified Neutral Pt(II) Complexes: Their Aggregation-Induced Phosphorescent Emission and Picric Acid Sensing Properties. Preprints 2024, 2024080745. https://doi.org/10.20944/preprints202408.0745.v1

Abstract

Three neutral Pt(II) complexes with diphenylamino-modified 2-phenylpyridine derivatives as cy- clometalating ligands and acetylacetone as the ancillary ligand exhibit aggregation-induced phosphorescent emission (AIPE) properties in THF/H2O. The crystal structures of the complexes highlight the contributions of non-covalent Pt···Pt interactions and hydrogen bonds to the AIPE properties. These AIPE-active Pt(II) complexes 1-3 have been successfully applied to detect picric acid (PA) in aqueous media, affording the lowest limit of detection at 70 nM. Furthermore, three Pt(II) complexes are able to detect PA in common water samples. The quenching of luminescence in the detection can be attributed to photo-induced electron transfer.

Keywords

neutral platinum(II) complex; diphenylamino group; AIPE property; picric acid; aqueous media

Subject

Chemistry and Materials Science, Electronic, Optical and Magnetic Materials

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