Scientists drew attention to the substances that are capable to perform photodynamic inactivation of microorganisms. Researchers at the Institute of Inorganic Chemistry of Siberian Branch of the Russian Academy of Sciences proposed to use cluster complexes of tungsten and molybdenum as photoactive components in antibacterial materials.
When exposed to sunlight or artificial light, they effectively generate singlet oxygen, a ROS that can destroy any bacterium that gets in its way. There is another type of antibacterial materials where the bacterium that gets in, immediately “rolls down.” This enables creating a coating where the bacteria can not gain a foothold. It is the so-called “superhydrophobic” or water-repellent coating.
“In our work, we decided to combine these methods of fighting the bacteria. We took modified teflon, a substance that is close to being superhydrophobic, and added our active component (tungsten or molybdenum). This teflon is oxygen permeable, which is important, since the complexes included in it need to access air in order to generate singlet oxygen. As a result, the bacteria are either washed away or (when they are particularly tenacious) destroyed by light,” said Mikhail Shestopalov, senior researcher at A.V. Nikolaev Institute of Inorganic Chemistry of Siberian Branch of the Russian Academy of Sciences.
The experiments have already been successfully conducted at the Federal Research Center of Fundamental and Translational Medicine. The work of scientists was supported by a grant of the President of the Russian Federation.
Just like in case of plastic, the film is stretched over surface, whether it is a medical table or desk in the outpatient clinic. In addition, the modified teflon may be dissolved in unconventional solvents. Therefore, it can be transformed into transparent varnish and applied anywhere. This will reduce the transfer and spread of various diseases by an order of magnitude.