Since the quenching excited-state process is irrelevant to optical path, rare earth complexes of UV absorber can overcome the disadvange of protecting the surface of products and thin products.

• 由于激发态猝灭作用是与光程无关的,因此这一机理意味着,形成稀土配合物在显著提高UV吸收剂光稳定效能的同时,还克服了其不能有效保护制品表面和薄制品的缺点。