Simultaneous Noncovalent Modification and Exfoliation of 2D Carbon Nitride for Enhanced Electrochemiluminescent Biosensing

• DOI: 10.1021/jacs.7b06708
• Publication Date: 2017-08-08T19:43:18Z
• Authors: Jingjing Ji; Jing Wen; Yanfei Shen; Yanqin Lv; Yile Chen; Songqin Liu; Haibo Ma; Yuanjian Zhang
• Keywords: Biomolecule; Exfoliation joint; Carbon nitride; Graphitic carbon nitride; Surface Modification; Carbon fibers

As an emerging nitrogen-rich 2D carbon material, graphitic nitride (CN) has drawn much attention for applications ranging from photo-/electrocatalysts to biosensors. Interfacial modification of CN is fundamentally vital but still in its infancy and remains challenging due the low reactivity CN. Here we report that, conjunction with a π-π stacking interaction, bulk could be simultaneously exfoliated via facile mechanical grinding. The obtained nanosheets (m-CNNS) not only retained pristine optoelectronic properties also enriched friendly interface further coupling biomolecules advanced properties, overcoming deficiencies surface science. m-CNNS were covalently linked DNA probe, resultant electrochemiluminescent biosensor target exhibited enhanced sensitivity respect that by direct physical absorption probe on unmodified CNNS. This noncovalent exfoliation interfacial should greatly expand scope potential areas such as biosensing applicable other materials modulation.