Crystalline Framework Materials for Photocatalytic Tandem Reactions

ABSTRACT Photocatalytic tandem reactions demonstrate considerable potential in fine chemical synthesis, environmental remediation, and energy conversion by integrating multiple reaction steps into a unified process. This technology employs photogenerated charge carriers to drive sequential transformations, achieving simultaneous step economy and atom economy, thereby offering a sustainable approach for green chemical conversion. The properties of the crystalline framework materials are achieved through their customizable structures and active sites, allowing for the synergistic catalysis of multi‐step photocatalytic tandem reactions via nanoconfinement effects, which leads to the simultaneous enhancement of efficiency, selectivity, and stability. This review systematically analyzes the distinctive advantages of metal organic frameworks, covalent organic frameworks, and composites based on organic framework in photocatalytic tandem reactions, with particular emphasis on their innovative implementations in sustainable synthesis, energy transformation, and environmental management. The work elucidates fundamental structure‐property relationships between crystalline framework material characteristics and reaction pathways, establishes theoretical foundations for designing advanced photocatalytic tandem reaction systems, and outlines future research directions in sustainable chemistry applications.