State-specific heavy-atom effect on intersystem crossing processes in 2-thiothymine: A potential photodynamic therapy photosensitizer

• Published in: The Journal of chemical physics Vol. 138; no. 4; p. 044315
• Main Authors: Cui, Ganglong, Fang, Wei-hai
• Format: Journal Article
• Language: English
• Published: United States 28.01.2013
• Subjects: Direct power generation; Dissipation; Electronic structure; Electronics; Ground state; Intersections; Molecular Structure; Photochemotherapy; Photodynamic therapy; Photosensitizing Agents - chemistry; Quantum Theory; Thymine; Thymine - analogs & derivatives; Thymine - chemistry

Thiothymidine has a potential application as a photosensitizer in cancer photodynamic therapy (PDT). As the chromophore of thiothymidine, 2-thiothymine exhibits ultrahigh quantum yield of intersystem crossing to the lowest triplet state T1 (ca. 100%), which contrasts with the excited-state behavior...