Dandelion Flower Like, APTES Functionalized Gallium Nitirde Microsphere for Fluorescence Detection of Bovine Serum Albumin Protein

In this abstract, we present GaN microsphere with dandelion flower-like morphology and high crystalline quality, synthesized using the optimized ammonothermal-ammonolysis hybrid method. The GaN micro-spherical flower are further functionalized with APTES for immobilization of biomolecules. Therefore, GaN microsphere has been first ever utilized for BSA protein biosensor. We studied the influence of the ammonolysis temperature on the BSA sensing performance of the GaN based protein biosensors. By varying the band-gap of the material, APTES modified GaN microspheres have demonstrated tunable blue and green fluorescent emission from BSA, which shows promising application for protein detection.