【摘要】 以3,4,9,10-苝四甲酸二酐为原料合成了水溶性荧光材料-N,N’-二(1-氨丙基-3-丙基咪唑盐)-3,4,9,10-苝四羧酸二酰亚胺(PDI),引入的咪唑基团使PDI不仅溶于DMSO、DMF等有机溶剂,可溶于EtOH/H2O、Acetone/H2O、THF/H2O等的混合溶液,不仅提高了PDI在有机相和有机相/水相的溶解性,同时扩展了PDI的适用范围。对比不同的混合溶剂发现,PDI在EtOH/H2O中的荧光较强,UV-Vis最大吸收波长和荧光最大发射波长分别为526nm和540nm。进而在EtOH/H2O溶剂中,比较了PDI对各种离子的荧光识别作用,其中PDI作为Cu2+的荧光探针时,受干扰小,选择性较高。TG结果表明,PDI拥有高的热稳定性,温度达353℃时质量损失仅为5%。更多还原

【Abstract】 The water-soluble N,N-bis-(1-aminopropyl-3-propylimidazol salt)-3,4,9,10-perylene tetracarboxylic acid diimide(PDI) was synthesized by 3,4,9,10-perylene tetracarboxylic dianhydride as the started material.Incorporation of imidazolium ion functionalities into the aromatic backbone of PDI improved the solubility and dispersion stability of PDI in solvents.The resulting compound was soluble in many solvents,such as DMSO,DMF,EtOH/H2O,Acetone/H2O,THF/H2O,etc.Compared with different organic/water solvents,PDI had the strongest fluorescent emission in EtOH/H2O with maximum UV absorption of 526nm and maximum fluorescent emission of 540nm,respectively.PDI can be used as a new optical probe for sensing Cu2+ ions.The sensor based on this probe exhibited rapid and sensitive responses and improved selectivity toward Cu2+ ions.TGA showed that PDI was thermally stable.Only 5% mass loss was detected when PDI was heated up to 353℃.更多还原