Widely used as a Lewis acid catalyst in organic synthesis, enabling efficient and selective transformations under mild conditions. Particularly effective in promoting carbon-carbon and carbon-heteroatom bond-forming reactions, including Friedel-Crafts alkylations, aldol condensations, and Michael additions. Exhibits high stability and reusability in aqueous and biphasic reaction systems, making it suitable for green chemistry applications. Its strong yet water-tolerant acidity allows catalysis in the presence of moisture, which is advantageous for one-pot reactions and industrial processes where anhydrous conditions are difficult to maintain. Also employed in luminescent materials and as a dopant in solid-state devices due to its unique optical properties.