Polynigrogen Energetic Materials

ABSTRACT Current research trends of prediction of possible structures, synthesis and explosive characteristics of polynitrogen molecules(PNs) are reviewed. Theoretically PNs are composed only of nitrogen atoms, in which N-N bonds are either single or double bonds, and thus when these molecules decompose, release of enormous energy is accompanied. From the middle of 20th century energetic material chemists have been seeking possible structures and the methods of synthesis of these new materials. As a results, from N 4 to N 60 together with their ions are predicted, and experimental chemists have been trying to synthesize these materials with a few success, including the famous N 5+ ion in 1999. Although experimental successes are very rare beyond N 5 until today, the author believes that renovative ideas together with sincere efforts will bring someday next generation of high energy materials such as nitrogen fullerene(N 60 ) in reality.Key Words : Polynitrogen(폴리나이트로젠), Energetic Materials(에너지 함유 물질), Prediction of Structures(구조예측), Heat of Formation(생성열), Explosive Performance(폭발성능)1. 서 론 고폭화약이나 추진제와 같은 에너지물질은 기본적으로 더 높은 에너지를 생성할 수 있는 고성능과 취급 시 절대적으로 안전해야 한다는 상반된 특성이 동시에 요구되는 물질이다. 따라서 과학자들은 더 높은 에너