【摘要】 为减少荧光指示剂被水萃取流失,提高荧光膜的使用寿命,将5-氨基-邻菲咯啉与二(4,7-二苯基-邻菲咯啉)二氯化钌(Ⅱ)络合,合成带氨基的荧光指示剂[Ru(dpp)2(phen-NH2)]Cl2,并经氨基键合到有机玻璃表面。以核磁、质谱、红外验证合成荧光指示剂的结构,研究键合条件对染色有机玻璃荧光发射的影响,监测荧光强度随水浸泡时间的变化。合成荧光指示剂的荧光发射峰值波长为570nm,键合到有机玻璃后发射光谱红移20nm,荧光强度受溶解氧影响,响应时间约为10s,氧猝灭比达4。染色有机玻璃的荧光稳定性好,在50℃水中浸泡7个月,荧光强度下降小于1%。更多还原

【Abstract】 To alleviate phosphor leaching and prolong the lifetime of fluoresce quenching sensors,a reactive phosphor[Ru(dpp)2(phen-NH2)]Cl2was synthesized through the ligation between [Ru(dpp)2]Cl2and 5-amino-phenanthroline(phen-NH2)and immobilized to PMMA surface through covalent bonding.The structure of the synthesized phosphor and covalent bonding were verified with FT-IR,1 HNMR,13 CNMR spectroscopy,UV-Vis and ES-MS.The effects of reaction conditions on the fluorescence of PMMA immobilized with phosphors were investigated and the fluorescent decay of the PMMA in 50 ℃ water was monitored.The fluorescent emission of the synthesized[Ru(dpp)2(phen-NH2)]Cl2in ethanol peaked at 570 nm and red shifted20 nm as chemically bonded to PMMA.[Ru(dpp)2(phen-NH2)]Cl2bonded to PMMA exhibited fast response speed to dissolved oxygen and the oxygen quenching ratio I0/I100 was 4.After immersed in water at 50℃for more than 90 days,the fluorescence intensity of PMMA bonded with[Ru(dpp)2(phen-NH2)]Cl2decreased less than 1%.更多还原