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"Quaterrylene bisimide"

Synthesis and Characterization of Quaterrylene Bisimide as NIR Colorant
Keun Soo Park, Yeon Tae Jeong
J Electr Electron Mater 2011;24(5):398-403.   Published online May 1, 2011
Recently, Near-infrared (NIR)colorant is intriguing and attractive but full of challenges. Although some cyanine colorant have been commercialized, near-infrared colorant with intensive NIR absorption, good chemical and photo-stability, and high solubility still remain as target compound. Certain polycyclic aromatic compounds such as quaterrylene represent a key class of NIR colorant and also give rise to outstanding physical and chemical properties after appropriate chemical modification. In this study, We have tried to introduce imide functional group to quaterrylene in order to give chemical and thermal stability. Finally, N,N`-bis (2,6-diisopropylphenyl)-quarterrylene-3,4:13,14-tetracarboximide was synthesized and evaluated its properties using 1H NMR, Maldi-tof, TGA, and UV/VIS/NIR spectroscopy as NIR colorant. The quaterrylene bisimide compound exhibit a excellent thermal stability and chemical stability.
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