Photoactive amorphous molecular materials based on bisquinoline diamines and their synthesis by Friedländer condensation reaction
作者:Pradip K. Bhowmik、Alexi K. Nedeltchev、Haesook Han、Tae Soo Jo、Jung Jae Koh、Lakshmipathi Senthilkumar、Palanivel Umadevi
DOI:10.1016/j.jphotochem.2014.03.021
日期:2014.6
A new class of bisquinoline diamines prepared by Friedländer condensation reaction are reported showing stable amorphous state with high glass transition temperatures up to 150 °C and high thermal stabilities >370 °C. Additionally, they show excellent fluorescent properties in the blue, green and yellow region of visible light in both solution and solid states. They show narrow full-widths at half-maxima
据报道,通过弗里德兰德缩合反应制备的一类新的双喹啉二胺显示出稳定的无定形状态,最高玻璃化转变温度高达150°C,并且热稳定性大于370°C。此外,它们在溶液和固态下均在可见光的蓝色,绿色和黄色区域显示出出色的荧光特性。在各种有机溶剂中,它们在52-73 nm范围内的半峰处显示出狭窄的全角。他们的解决方案量子效率相对较高,在27%至38%的范围内。从时变密度泛函理论(TDDFT)获得的吸收光谱使用优化的几何结构与实验数据很好地相关。根据前沿分子轨道研究,所涉及的电子跃迁具有π–π *特征。