N-(Di)icosyl-Substituted Benzo[a]phenoxazinium Chlorides: Synthesis and Evaluation as Near-Infrared Membrane Probes
作者:Sarala Naik、Carla M. A. Alves、Paulo J. G. Coutinho、M. Sameiro T. Gonçalves
DOI:10.1002/ejoc.201001579
日期:2011.5
Five benzo[a]phenoxazinium chlorides containing alkyl chains with twenty carbon atoms at the 5- or 9-positions of the tetracyclic ring were efficiently synthesised and characterised by UV/Vis and NIR spectroscopy. The absorption and emission maxima in ethanol occur in the range 627-641 nm and 645-676 nm, respectively, with quantum yields varying from 0.14 to 0.38. Preliminary photophysical studies
有效地合成了五种苯并 [a] 吩恶嗪氯化物,其四环的 5 位或 9 位含有二十个碳原子的烷基链,并通过 UV/Vis 和 NIR 光谱对其进行表征。乙醇中的吸收和发射最大值分别出现在 627-641 nm 和 645-676 nm 范围内,量子产率从 0.14 到 0.38 不等。在两性离子 [2,3-双(棕榈酰氧基)丙基-2-(三甲基氨)乙基磷酸酯,DPPC] 和阳离子(N,N-二甲基-N-十八烷基十八烷-1-溴化铵,DODAB)中对这些荧光发色团进行初步光物理研究) 囊泡进行。结果表明,新的苯并[a]吩恶嗪鎓衍生物能够通过H-聚集程度或酸碱平衡的变化来检测凝胶到液晶脂质的相变。