Biofunctionalization of nanodiamonds through facile cytochrome P450 catalysis

Siheng Su, Shiren Wang, Jingjing Qiu

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


In this paper, a novel and biocompatible approach for fluorescent nanodiamond (FND) biofunctionlization is proposed by facile enzyme catalysis. Specifically, the fluorescent nanodiamond is treated by Cytochrome P450 (CYP) to conjugate with anti-immunoglobulin G (anti-IgG). With low concentration hydrogen peroxide, the enzyme catalysis increases the oxidation degree of nanodiamond and retains the high biocompatibility nature of nanodiamond. Consequently, the increasing oxygen containing groups on the nanodiamond enhance its stability and solubility in water, which are beneficial for nanodiamond covalent functionalized with biomolecules. Based on the experimental results from Scanning Electron Microscopy (SEM), UV-vis spectrophotometer, Fourier Transforms Infrared Spectroscopy (FTIR), and Fluorescence Microscopy, anti-IgG is successfully immobilized on the CYP catalyzed nanodiamond and maintains its superior fluorescence property.

Original languageEnglish
Pages (from-to)203-208
Number of pages6
JournalScience of Advanced Materials
Issue number1
StatePublished - Jan 2014


  • Biofunctionalization
  • Enzyme
  • Nanodiamond


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