Used in oligonucleotide synthesis to introduce a photocleavable linker within the DNA strand. Enables light-controlled strand cleavage at specific sites during solid-phase synthesis. Commonly applied in microarray technologies, DNA chip fabrication, and photolithographic patterning where spatial and temporal control of DNA release is required. Facilitates high-throughput genomics, targeted probe release, and reversible surface immobilization in diagnostic and research platforms.