Abstract
In this work, highly chemiluminescent magnetic mesoporous carbon with yolk-shell structure was synthesized by encapsulating N -(4-aminobutyl)- N -ethylisoluminol (ABEI) and Co2+ into the magnetic mesoporous carbon composites (Co2+-ABEI-Fe3O4@void@C). The synthetic Co2+-ABEI-Fe3O4@void@C showed a good magnetic separation property, which could remove residual ABEI molecules and Co2+ in less than 3 min under an external magnet. Moreover, the synthetic Co2+-ABEI-Fe3O4@void@C demonstrated good chemiluminescence (CL) property and good stability when interacted with alkaline H2O2 solution. The CL intensity of such Co2+-ABEI-Fe3O4@void@C was about 120 times higher than that of ABEI-Fe3O4@void@C. The Co2+-ABEI-Fe3O4@void@C also exhibited good electrochemiluminescence (ECL) property in alkaline solution. The outstanding CL/ECL performance of the Co2+-ABEI-Fe3O4@void@C was attributed to the Co2+ immobilized in the Co2+-ABEI-Fe3O4@void@C, which catalyzed the decomposition of H2O2 to generate O2•− and HO•, expediting the CL/ECL reaction. The synthetic Co2+- ABEI-Fe3O4@void@C may be of great application for the development of new methodologies in bioanalysis.
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