Highly sensitive fluorescent zinc or cadmium sensors are derived from 8-hydroxyquinaldine, a well-established fluorescent zinc probe, as a building block. High binding efficiency was achieved by incorporating two 8-hydroxyquninaldine moieties into a single ligand. Incorporation of sulfonamide groups further improved binding efficiency. The compounds make it possible to monitor zinc ion or cadmium ion concentration in the picomolar or femtomolar range.
高灵敏度的荧光
锌或
镉传感器是由
8-羟基喹啉衍生而来的,
8-羟基喹啉是一个成熟的荧光
锌探针,作为构建块。通过将两个
8-羟基喹啉基团合并到一个
配体中,实现了高结合效率。进一步加入磺酰胺基团可以进一步提高结合效率。这些化合物使得能够监测皮克摩尔或飞托摩尔范围内的
锌离子或
镉离子浓度成为可能。