A series of benzo[b][1, 8]naphthyridines has been synthesized by Friedländer condensation of 2-aminoquinoline-3-carbaldehyde 1 (o-aminoaldehyde) with active methylenes in basic medium. The fluorescence spectroscopic properties of some representative compounds has been studied in different organic solvents; moreover interaction with bovine serum albumin (BSA) in phosphate buffer was examined by UV–vis and fluorescence spectroscopy. The effect of electron donor-acceptor substituents on fluorescence properties of benzo[b][1, 8]naphthyridines 13(a-n) has been investigated along with their fluorescent quantum yields.
2-
氨基
喹啉-3-
甲醛 1(邻
氨基醛)在碱性介质中与活性亚甲基进行弗里德缩合,合成了一系列苯并[b][1, 8]
萘啶。研究了一些代表性化合物在不同有机溶剂中的荧光光谱特性;此外,还通过紫外可见光谱和荧光光谱检测了这些化合物在
磷酸盐缓冲液中与
牛血清白蛋白(
BSA)的相互作用。研究了电子供体-受体取代基对苯并[b][1, 8]
萘啶 13(a-n)荧光特性的影响及其荧光量子产率。