Muroran Inst. Technology :Small Molecules Repeatedly Dissolved and Turbid in Water in Response to Ambient Temperature: MU24-002
Expected application to temperature-responsive smart windows
There are known compounds that exhibit phase separation when solutes dissolved in solvents exceed a certain temperature (LCST). Poly (N-isopropylacrylamide) (PNIPAm) has been studied as a representative of these compounds, and applications to temperature-responsive smart windows have been reported. However, since the LCST of PNIPAm is constant at 31°C, a compound that can flexibly respond to the LCST depending on ambient temperature has been desired in industry. The inventors succeeded in synthesizing a new compound. This compound is characterized by the ability to control the LCST within the range of about 25~55°C by modifying a part of its structure. When applying to smart windows, most of them require a power supply because they switch between transmission and non-transmission by turning the voltage on and off. On the other hand, smart windows using this compound can be used in places without a power supply because they switch between transmission and non-transmission spontaneously according to changes in the outside temperature. Furthermore, by controlling the heat according to the degree of light transmission, it is expected to be effective against heat.
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The revenue generated from technology transfer is reinvested as new research funding for universities and researchers, and is utilized to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will vigorously promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by signing basic technology transfer agreements with the following universities (as of June 1, 2025): Tohoku University, Hirosaki University, Iwate University, Akita University, Fukushima University, Yamagata University, Tohoku Gakuin University, Iwate Medical University, Fukushima Medical University, Aizu University, Miyagi University, Hokkaido University, Muroran Institute of Technology, and Showa Medical University.
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