Hybrid Nanomaterial UV Filter
Official patent title
Eco-friendly and biocompatible hybrid nanomaterials in sunscreen
Arabic title: مواد نانوية هجينة صديقة للبيئة ومتوافقة حيويًا في واقي الشمس
Invention
Invention
Problem
Sunscreens need broad UVA and UVB protection, photostability, acceptable skin feel, and biological safety. Nanoscale UV absorbers also require evidence on skin penetration, reactive species, and environmental fate.
Why it matters
Effective broad-spectrum protection reduces ultraviolet exposure associated with sunburn, photoaging, and skin-cancer risk when used correctly as part of sun-safety practice.
Approach
The formulation disperses citric-acid/thiamine carbon quantum dots within nanoscale zinc terephthalate F-MOF5 particles, then disperses the hybrid particles in a liquid carrier with a stabilizer.
Who may benefit
Potential beneficiaries include sunscreen and cosmetics manufacturers, dermatology researchers, UV-filter developers, formulation laboratories, and personal-care ingredient suppliers.
Potential value
The hybrid architecture combines UVA/UVB-absorbing carbon dots with 4–8 nm zinc-MOF particles and claims at least 80% UV absorbance over specified spectral ranges.
Background
Background
Topical sunscreens use organic or inorganic filters to absorb, reflect, or scatter ultraviolet radiation. Broad-spectrum efficacy must be demonstrated with standardized SPF, UVA protection, photostability, water resistance, and dose-controlled testing. Nanomaterials can improve optical behavior but may change penetration, aggregation, reactive-oxygen generation, and aquatic fate. A metal-organic framework also raises questions about zinc and linker release. The disclosure proposes carbon quantum dots inside a zinc terephthalate framework as the active hybrid UV-absorbing material.
Technology overview
Technology overview
Carbon dots are produced from citric acid and thiamine by sonication, base addition, heating at 140–180 °C for 4–6 hours, centrifugation, and optional dialysis. The zinc MOF is formed from zinc salt and terephthalic acid in aqueous methanol at 130–150 °C for 16–24 hours. Claims specify F-MOF5 spheres averaging 4–8 nm and a citric-acid-to-thiamine weight ratio of 0.4:1–0.7:1. The hybrid is dispersed in a selected carrier and stabilizer and claims UVA/UVB absorption.
Potential applications
Potential applications
- Broad-spectrum sunscreen research.
- Hybrid nanomaterial UV filters.
- Cosmetic photoprotection formulations.
- UV-absorbing coating and film studies.
Evidence-supported advantages
Evidence-supported advantages
- Targets both UVA and UVB absorption.
- Disperses carbon dots within a nanoscale framework.
- Provides multiple carrier and stabilizer options.
- Defines synthesis and particle-size ranges.
- Reports a high claimed spectral absorbance.
Development stage
Development stage
Material synthesis and claimed UV absorbance are described; standardized SPF/UVA efficacy, photostability, dermal penetration, toxicology, human tolerability, and environmental safety were not established. The development stage was not independently verified.
Commercial opportunity
Commercial opportunity
The formulation is an early sunscreen candidate. Development requires standardized SPF and UVA tests, photostability and water resistance, skin penetration, irritation, sensitization, phototoxicity and genotoxicity, zinc and linker release, reactive-oxygen testing, environmental fate, formulation stability, scalable purified manufacture, preservative compatibility, and jurisdiction-specific cosmetic or drug approval.
Patent classifications
Patent classifications
WIPO IPC
- A61K8/19Preparations for medical, dental or toiletry purposes
- A61Q17/04Specific use of cosmetics or similar toiletry preparations
CPC
- A61K8/19Preparations for medical, dental or toiletry purposes
- A61Q17/04Specific use of cosmetics or similar toiletry preparations
- A61K8/27Preparations for medical, dental or toiletry purposes
- A61K2800/26Preparations for medical, dental or toiletry purposes
- A61K2800/413Preparations for medical, dental or toiletry purposes
- A61K2800/52Preparations for medical, dental or toiletry purposes
- A61K2800/58Preparations for medical, dental or toiletry purposes
- A61K2800/591Preparations for medical, dental or toiletry purposes
- A61K2800/612Preparations for medical, dental or toiletry purposes
- A61K2800/651Preparations for medical, dental or toiletry purposes
- A61K2800/82Preparations for medical, dental or toiletry purposes
Inventors
Inventors
- First inventorFaisal Khuwayshan L. Algethami
- InventorSameera Shukir Mohammed Ameen
- InventorKhalid Mohammad Omer
Keywords
Keywords
- sunscreen
- carbon quantum dots
- metal-organic framework
- F-MOF5
- zinc
- UVA
- UVB
- photoprotection
Patent document and drawings
Patent document and drawings
The patent publication is mapped to this record. Patent drawings remain within that publication; no separately cleared public media package has been supplied.