Yuhan Yang , Tao Liu , Fuze Sun , Jun Ying , Aixiang Tian , Mengle Yang
{"title":"Four Anderson-type POM-based viologen compounds for information encryption and food freshness detection","authors":"Yuhan Yang , Tao Liu , Fuze Sun , Jun Ying , Aixiang Tian , Mengle Yang","doi":"10.1016/j.dyepig.2025.112917","DOIUrl":null,"url":null,"abstract":"<div><div>In this paper, Anderson-type polyoxometalates (POMs) were combined with a viologen ligand to synthesize four compounds under solvothermal conditions, namely (1,3–bcbby)<sub>3</sub>·(TeMo<sub>6</sub>O<sub>24</sub>)⋅5H<sub>2</sub>O (<strong>1</strong>),(1,3–bcbby)·[M<sub>2</sub>(H<sub>2</sub>O)<sub>6</sub>TeMo<sub>6</sub>O<sub>24</sub>] (<strong>2</strong>: M = Zn; <strong>3</strong>: M = Ni; <strong>4</strong>: M = Cu) (1,3-bcbby·2Cl = 1,1′-bis(3-carboxybenzyl)-4,4′-bipyridine dichloride). Compound <strong>1</strong> forms one-dimensional supramolecular chains and two-dimensional supramolecular layers through hydrogen bondings. Isomorphic compounds <strong>2−4</strong> form one-dimensional inorganic chains through covalent bonds between metal ions and POMs, which were then organized into two-dimensional layered structures through hydrogen bondings. All four compounds can be used as color-changing materials. Among them, compounds <strong>1</strong> and <strong>2</strong> exhibit pronounced reversible photochromic properties under a xenon lamp irradiation, while compounds <strong>3</strong> and <strong>4</strong> show good thermochromic properties. Capitalizing on the prompt response of compounds <strong>1</strong> and <strong>2</strong> to ultraviolet light, they are utilized on filter paper for application in ink-free erasable printing. Additionally, when these four compounds are exposed to atmospheres containing ammonia, ethylenediamine or diethylenetriamine, they exhibit distinct color changes. Based on this character, compound <strong>2</strong> was formulated into a portable amine detection strip, which can detect the freshness of pork in real-time through color changes of the detection strip.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"241 ","pages":"Article 112917"},"PeriodicalIF":4.1000,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Dyes and Pigments","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0143720825002876","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
In this paper, Anderson-type polyoxometalates (POMs) were combined with a viologen ligand to synthesize four compounds under solvothermal conditions, namely (1,3–bcbby)3·(TeMo6O24)⋅5H2O (1),(1,3–bcbby)·[M2(H2O)6TeMo6O24] (2: M = Zn; 3: M = Ni; 4: M = Cu) (1,3-bcbby·2Cl = 1,1′-bis(3-carboxybenzyl)-4,4′-bipyridine dichloride). Compound 1 forms one-dimensional supramolecular chains and two-dimensional supramolecular layers through hydrogen bondings. Isomorphic compounds 2−4 form one-dimensional inorganic chains through covalent bonds between metal ions and POMs, which were then organized into two-dimensional layered structures through hydrogen bondings. All four compounds can be used as color-changing materials. Among them, compounds 1 and 2 exhibit pronounced reversible photochromic properties under a xenon lamp irradiation, while compounds 3 and 4 show good thermochromic properties. Capitalizing on the prompt response of compounds 1 and 2 to ultraviolet light, they are utilized on filter paper for application in ink-free erasable printing. Additionally, when these four compounds are exposed to atmospheres containing ammonia, ethylenediamine or diethylenetriamine, they exhibit distinct color changes. Based on this character, compound 2 was formulated into a portable amine detection strip, which can detect the freshness of pork in real-time through color changes of the detection strip.
期刊介绍:
Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied.
Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media.
The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.