Use of photosensitizer for cleaning air, water or contaminated surfaces and in filters, where the photosensitizer is covalently linked and/or linked over physical interaction to surface and activated by visible light to form singlet oxygen

Simple SummaryContent extracted from patent full text and abstract with AI.

This invention utilizes photosensitizers attached to surfaces that, when exposed to visible light, produce singlet oxygen for the purpose of cleaning air, water, or contaminated surfaces. The photosensitizer can be chemically or physically linked to the surface, enabling efficient activation by visible light to break down contaminants through generated singlet oxygen.

Use CasesContent extracted from patent full text and abstract with AI.

• Air purification systems for homes, offices, and industrial settings
• Water purification or treatment plants for removing organic pollutants
• Self-cleaning surfaces in hospitals, schools, public transport, or other high-touch environments
• Antimicrobial coatings for surfaces in medical or food industries
• Advanced filters in air conditioners or HVAC systems
• Portable personal air or water filters

BenefitsContent extracted from patent full text and abstract with AI.

• Effective removal of contaminants through chemical oxidation by singlet oxygen
• Continuous cleaning action when exposed to visible light, reducing maintenance needs
• Non-toxic and environmentally friendly as it avoids harsh chemical cleaners or disinfectants
• Applicable to various surfaces and filter materials, increasing versatility
• Potentially reduces the spread of pathogens or harmful substances in air and water
• Works under normal lighting conditions, requiring no special UV light sources

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

Use of photosensitizer (20) for cleaning air, water or contaminated surfaces (10), is claimed, where: the photosensitizers are covalently linked and/or linked over a physical interaction to a surface and this surface is introduced in the polluted air and/or water volume or the photosensitizers are covalently linked and/or linked over a physical interaction to the surfaces that are to be cleaned; the photosensitizers are activated by visible light so that singlet-oxygen is formed by energy transfer. An independent claim is included for the photosensitizer containing Forster-donor and Forster-acceptor and forms a FRET system.