Synergetic magnetic and luminescence switching via solid state phase transitions of the dysprosium–dianthracene complex. Issue 22 (5th May 2020)

• Record Type: Journal Article
• Authors: Liu, Jing-Cui; Huang, Xin-Da; Zou, Qian; Bao, Song-Song; Wang, Xi-Zhang; Ma, Jing-Yuan; Zheng, Li-Min
• Is Part Of: Journal of materials chemistry. Volume 8:Issue 22(2020)
• Page Start: 7369
• Page End: 7377
• Publication Date: 2020-05-05
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d0tc01111h
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : A dinuclear complex Dy2 L2 (depma2 )Cl2 containing a pre-photodimerized dianthracene phosphonate ligand (depma2 ) undergoes consecutive two-step structural transformation upon heating depma2, accompanied by a synergetic switching of the photoluminescence and magnetic dynamics. Abstract : Manipulating the synergy between magnetic and optical characteristics in a predictable manner by an external stimulus is a highly desirable option to develop smart materials for advanced applications such as information processing and storage in multifunctional devices. Herein we report dinuclear complexes Ln2 L2 (depma2 )Cl2 (1-Ln, Ln = Dy, Gd; H2 L = N 1, N 3 -bis(salicylideneimino)diethylenetriamine, depma2 = photodimerized 9-diethylphosphonomethylanthracene) where the lanthanide ions possess pseudo- D 5h geometries with five equatorial positions occupied by L 2− and the axial positions by depma2 and the Cl − anion. depma2 acts as a bridge between the equivalent Ln III ions and can be opened and closed upon heating and light irradiation. 1-Ln experience consecutive structural transformations, first separation of the depma2 at ca. 170 °C and second elimination of chloroethane at ca. 250 °C, accompanied by a synergetic switch of the photoluminescence and magnetic dynamics for 1-Dy .