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- Title
Multiresponsive, easy-reversible, and dual-visual Pt(II) salt nanostructures for advanced anti-counterfeiting application.
- Authors
Su, Zhen; Li, Depeng; Zhang, Lixin; Tian, Si; Su, Yuhong; Hu, Xiaoyun; Xiong, Duan; Guan, Qingqing
- Abstract
Smart materials that integrate multi-stimuli response, full reversibility, and dual-visual read-out channel are highly desired for anti-counterfeiting and information encryption applications. Herein, we developed a multiresponsive perchlorate terpyridyl Pt(II) nano complex which could undergo fully reversible conversion between three forms stimulated by water or formaldehyde molecule due to the extent of Pt–Pt interaction. Meanwhile, a dual-visual channel, i.e., the colorimetric channel changed from yellow to orange or red and the corresponding luminescent channel from orange to orange-red or red, has also been found. The weak and equivalent strength of ion-dipole interaction and hydrogen bond that generated between formaldehyde/water and Pt(II) salt result in the easy-control reversibility between the three forms. Furthermore, by introducing different polymer matrices, 1Cl·ClO4@PMMA (1Cl·ClO4: [Pt(tpy)Cl]·ClO4, tpy: 2,2′:6′,2″-terpyridine), PMMA: poly(methyl methacrylate)) and 1Cl·ClO4@PVA (PVA: polyvinyl alcohol) are successfully constructed, which exhibit different reversible behaviors since the PMMA and PVA matrix exert different influences on the strength of hydrogen-bond. Those smart Pt(II) salt nanostructures present great potential for high-security-level anticounterfeiting application.
- Publication
Nano Research, 2024, Vol 17, Issue 1, p372
- ISSN
1998-0124
- Publication type
Article
- DOI
10.1007/s12274-023-6032-0