A research group led by Professor MOCHIDA Tomoyuki (Kobe University Graduate School of Science) and Dr. FUNASAKO Yusuke (Tokyo University of Science, Yamaguchi) has developed a metal-containing compound which transforms into a solid when exposed to light and returns to liquid form when heated. This substance could potentially be used for photolithography technology, such as fabricating printed circuits, among other applications.
The findings were published in the journal Chemical Communications on May 7, 2016 (Japan Standard Time).
Coordination polymers are solids with various useful applications. In recent years, research into coordination polymers has increased, and scientists have developed many ways to synthesize them, but most of these methods rely on chemical reactions in solutions. This is the first example of a method that creates coordination polymers by exposing liquids to light.
Techniques that can control the properties of materials through external stimuli such as light and heat are extremely important in creating materials for use in electronics. For example, materials which solidify when exposed to light (photosensitive resins) are used in creating printed circuits, but it is difficult to reuse these materials.