| 光谱学与光谱分析 | 
									
										
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    					| Study on Spectral Properties of 5-(Dimethylamino)-N-(4-(2-(2-Hydroxybenzylidene)Hydrazinecarbonyl)Phenyl)Naphthalene-1-Sulfonamide for Selective Detection of Zn2+  | 
  					 
  					  										
						| WU Hong-mei1, GUO Yu1, ZHOU Peng2  | 
					 
															
						1. School of Chemical and Environmental Engineering, Liaoning University of Technology, Jinzhou 121001, China 2. State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China | 
					 
										
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													     		                            						                            																	    Abstract  A novel dansyl sulfonamide-based fluorescence probe DH1 [(E)-5-(dimethylamino)-N-(4-(2-(quinolin-2-ylmethylene)hydrazinecarbonyl)phenyl)aphthalene-1-sulfonamide] was synthesized for detection of Zn2+. Spectral properties of DH1 such as UV-Vis, fluorescence spectra and ESI-MS for recognition of Zn2+ were studied. Spectrophotometric titration and ESI-MS spectra indicate the formation of a 1∶1 complex of Zn2+ with DH1. The results show that DH1 has high quantum yield of 0.53 and low the detection limit of 1.0×10-7 mol·L-1 for detection of Zn2+ in acetonitrile/water(9∶1, volume ratio). Moreover, no fluorescence intensity changes were observed in the presence of other common metal ions such as K+, Li+, Na+, Mg2+, Ca2+, Cr3+, Mn2+, Ni2+, Pb2+, Cu2+, Cd2+, Co2+, Fe2+ and Hg2+, indicating that DH1 has excellent selectivity and high sensitivity for detection of Zn2+. 
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											   							Received: 2012-05-08    
						    						    							Accepted: 2012-07-15    
						    						    						    																				    
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																Corresponding Authors:
																WU Hong-mei   
																																 E-mail: wuhongmei0331@126.com
															    													     		
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