Synergetic Spin Crossover and Fluorescence in One-Dimensional Hybrid Complexes†
This work was supported by the National Natural Science Foundation of China (Grant 21325103), the National Basic Research Program of China (973 program, Grants 2014CB845601 and 2014CB845605), and the Specialized Research Fund for the Doctoral Program of Higher Education (Grant 20110121110012). X.Y.C. is grateful to the support from Special Project of National Major Scientific Equipment Development of China (2012YQ120060).
Abstract
Hybrid materials integrated with a variety of physical properties, such as spin crossover (SCO) and fluorescence, may show synergetic effects that find applications in many fields. Herein we demonstrate a promising post-synthetic approach to achieve such materials by grafting fluorophores (1-pyrenecarboxaldehyde and Rhodamine B) on one-dimensional SCO FeII structures. The resulting hybrid materials display expected one-step SCO behavior and fluorescent properties, in particular showing a coupling between the transition temperature of SCO and the temperature where the fluorescent intensity reverses. Consequently, synergetic effect between SCO and fluorescence is incorporated into materials despite different fluorophores. This study provides an effective strategy for the design and development of novel magnetic and optical materials.