There are described stable fluorescent chelates comprising a complex of a lanthanide metal and a chelating agent that includes a moiety that is a triplet sensitizer having a triplet energy greater than that of the lanthanide metal and at least two heteroatom-containing groups that form coordinate complexes with lanthanide metals and a third heteroatom-containing group or heteratom in or appended to the triplet sensitizer. Labeled physiologically active materials useful in specific binding assays such as labeled antigens, haptens, antibodies, and hormones, comprising the stable fluorescent labels having physiologically active materials adsorbed or bonded thereto are also described.
所述稳定荧光螯合物包括
镧系
金属和
螯合剂的络合物,
镧系
金属和
螯合剂包括三重能大于
镧系
金属三重能的三重敏化剂分子,以及与
镧系
金属形成配位络合物的至少两个含杂原子的基团和三重敏化剂中或附加在三重敏化剂上的第三个含杂原子的基团或杂原子。 还描述了在特定结合检测中有用的标记生理活性材料,如标记抗原、合剂、
抗体和激素,其中包括吸附或结合了生理活性材料的稳定荧光标签。