Cu(2＋)对联苯甲醛修饰的树状大分子聚酰胺-胺荧光性能的影响  

Effects of Cu^(2+) on Fluorescent Properties of Biphenyl-4-carbaldehyde Modified Polyamidoamine Dendrimers

作　　者：韩巧荣[1] 陆天虹[1] 江玉亮[1] 王炳祥[1] 

机构地区：[1]江苏省生物功能材料重点实验室,南京师范大学化学与材料科学学院,南京210097

出　　处：《高等学校化学学报》2012年第9期1991-1994,共4页Chemical Journal of Chinese Universities

基　　金：江苏省自然科学基金(批准号:BK2008435);江苏省高校优势学科建设工程资助项目资助

摘　　要：采用小分子联苯甲醛(BPA)分别修饰第一和第二代树状大分子聚酰胺-胺(PAMAM),合成了2种PAMAM的修饰产物G1-BPA4和G1-BPA8.利用IR,1H NMR及MALDI-TOF MS等手段表征了2种产物的结构,研究了Cu2+浓度对其荧光性能的影响.结果表明,在一定的浓度范围内,作为常见荧光猝灭剂的Cu2+能使2种产物的荧光均显著增强.Two PAMAM-BPA dendrimers （G1-BPA4 and G2-BPAs ） of generation one and two modified with biphenyl-4-carbaldehyde, were synthesized respectively. These PAMAM-BPA dendrimers were characterized by IR, 1 H NMR and MALDI-TOF MS. The effects of Cu2＋ on the fluorescent properties of these dendrimers was studied. The results indicated that CuZ＋which usually as the fluorescent quenching agent, in proper concentra- tion ranges, could enhance the fluorescence intensity of dendrimer G1-BPA4 and dendrimer G2-BPAs , perhaps due to the presence of the dendrimer effect. It provides a new research content for this kind of dendrimers as the dendrimer-copper hybrid fluorescent materials or as a fluorescence probe of Cu2＋.

关 键 词：树状大分子聚酰胺-胺(PAMAM) 联苯甲醛 铜离子 荧光探针 

分 类 号：O625[理学—有机化学] O631[理学—化学]