NIR 색소용 쿼터라일렌 비스이미드 유도체의 합성 및 특성 연구

Abstract

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 two kinds of imide functional group to quaterrylene in order to give chemical and thermal stability. One is the 2,6-diisopropylphenylimide, the other is 1-hexylheptylimide. Finally, we synthesized N,N'-bis(2,6-diisopropylphenyl)- quaterrylene-3,4:13,14-tetracarboximide, and N,N'-bis(1-hexyl- heptyl)-quaterrylene-3,4:13,14-tetracarboximide. Then, we evaluated their 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.