State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang, PR China.
Spectrochim Acta A Mol Biomol Spectrosc. 2011 Dec;83(1):149-54. doi: 10.1016/j.saa.2011.08.006. Epub 2011 Aug 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 Cr(3+). The complex formed by dendrimer and Cr(3+) in ethanol solution has also been studied, considering the potential application for Cr(3+) fluorescent sensor. The influence of the unique chemical structure and resulted photoinduced electron transfer, as well as spirolactam ring-opening on the photophysical properties of the product has been investigated.
一种新型的聚（酰胺-胺）（PAMAM）树枝状分子，在核心部分包含罗丹明 B 单元，在周边部分包含 1-苯基-3-甲基-5-吡唑啉酮单元，已经被合成并进行了表征。该树枝状分子在质子和金属阳离子的存在下，特别是在 Cr(3+)的存在下，其荧光强度显著增加。考虑到用于 Cr(3+)荧光传感器的潜在应用，还研究了树枝状分子与 Cr(3+)在乙醇溶液中形成的配合物。研究了独特的化学结构以及光诱导电子转移和螺环内酰胺开环对产物光物理性质的影响。
