Reagents
Nitric acid, titanium isopropoxide, 2-propanol, glucose oxidase (GOD) (15000 U / L) TRIS buffer pH 7.4, cholesterol oxidase (CHOD) (300 U / L), potassium phosphate buffer pH 6.8, H2O2 30% solution, glucose water solution 100 mg / dL, cholesterol solution of 200 mg / dL, ethylene glycol 99.5% was obtained from Sigma Aldrich. Slightly cationic fluorosurfactant DX4010N was obtained from DYNAX company.