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Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)
Published on: November 22, 2016
Phosphonium tetrachloromanganate(II) for efficient information encryption
Yepeng Yang1, Zilong Kong1, Yulu Li1
1Yunnan Key Laboratory of Metal-Organic Molecular Materials and Device, Yunnan Engineering Technology Research Center for Plastic Films, School of Chemistry and Chemical Engineering, Kunming University, Kunming, 650214, P. R. China. taorao@kmu.edu.cn.
Abstract:
Three Mn(II) complexes, [R-BPP]2[MnCl4] (BPP = benzyl(triphenyl)phosphonium, R = H, Me, CN), consisting of quaternary phosphonium cations and tetrachloromanganate(II) anions, were synthesized. They exhibit red-shifted emission (508 → 521 nm) via substituent effects. Encapsulation of [CN-BPP]2[MnCl4] within UV-curable acrylate produces stable films with tamper-evident security features under UV light, retaining structural integrity for more than 90 days.
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