科研之友
微信
新浪微博
Facebook
分享链接
摘要
Condensation of 4-(diethylamino) salicylaldehyde with aqueous hydrazine, followed by complexation with BF3 center dot OEt2 gives a fluorescent indicator highly selective for copper. The indicator forms a 2 : 1 complex with Cu2+ and displays a highly sensitive and selective fluorescent quenching action with Cu2+ upon excitation at 440 nm in water/THF (7 : 3, v/v) solution. This action is pH-independent over the range 4.5 < pH < 9.5.
