Journal
NANO LETTERS
Volume 22, Issue 2, Pages 545-553Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.1c01879
Keywords
molecular magnet; vacancy network; Prussian blue analogue; additive manufacturing; three-dimensional printing
Categories
Funding
- U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-SC0000909, DE-SC0018631]
- U.S. Army Research Office [W911NF-18-20202]
- DOE Office of Science User Facility [DE-AC0205CH11231]
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This study presents a rapid prototyping and stabilizing strategy for high-Tc molecular magnets, allowing for dynamic and nonvolatile magnetization control. The printed molecular magnets exhibit excellent thermal stability and durability, as well as tunability of magnetic exchange interactions, enabling a wide range of working temperatures.
High-T-c molecular magnets have amassed much promise; however, the long-standing obstacle for its practical applications is the inaccessibility of high-temperature molecular magnets showing dynamic and nonvolatile magnetization control. In addition, its functional durability is prone to degradation in oxygen and heat. Here, we introduce a rapid prototyping and stabilizing strategy for high T-c (360 K) molecular magnets with precise spatial control in geometry. The printed molecular magnets are thermally stable up to 400 K and air-stable for over 300 days, a significant improvement in its lifetime and durability. X-ray magnetic circular dichroism and computational modeling reveal the water ligands controlling magnetic exchange interaction of molecular magnets. The molecular magnets also show dynamical and reversible tunability of magnetic exchange interactions, enabling a colossal working temperature window of 86 K (from 258 to 344 K). This study provides a pathway to flexible, lightweight, and durable molecular magnetic devices through additive manufacturing.
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