A novel fluorescent sensor for Cr3+ based on rhodamine-cored poly (amidoamine) dendrimer
作者:Yonglin Lei、Yuanqiang Su、Jichuan Huo
DOI:10.1016/j.saa.2011.08.006
日期:2011.12
A novel poly (amidoamine) (PAMAM) dendrimer, comprising rhodamine B unit in the core and 1-phenyl-3-methyl-5-pyrazolone unit at the periphery, has been synthesized and characterized. The dendrimer shows dramatic increase in its fluorescence intensity in the presence of proton and metal cations, especially in the presence of Cr3+. The complex formed by dendrimer and Cr3+ in ethanol solution has also
合成和表征了一种新型的聚(酰氨基胺)(PAMAM)树状聚合物,其在核心包含罗丹明B单元,在外围包含1-苯基-3-甲基-5-吡唑啉酮单元。在质子和金属阳离子的存在下,特别是在Cr 3+的存在下,树枝状聚合物的荧光强度显着增加。考虑到Cr 3+荧光传感器的潜在应用,还研究了树枝状聚合物和Cr 3+在乙醇溶液中形成的络合物。研究了独特的化学结构以及由此产生的光诱导电子转移以及螺内酰胺开环对产物光物理性质的影响。