title: Synthesis and characterization of coumarin-based spiropyran photochromic colorants.
abstract: Two coumarin-based spiropyran derivatives were synthesized and characterized in two steps to explore their photochromic properties. Both prepared compounds are sensitive to UV light and change colors upon irradiation. The resulting photogenerated zwitterions revert to the original compounds while being heated. A new family of organic photochromic colorants is introduced.
authors.affiliation: Department of Chemistry, Tunghai University, 181, Taichung-Kang Road Sec. 3, Taichung, Taiwan 407.
authors.forename: Jhih-Rong
authors.initials: JR
authors.lastname: Chen
authors.forename: Jen-Bing
authors.initials: JB
authors.lastname: Wong
authors.forename: Pei-Yu
authors.initials: PY
authors.lastname: Kuo
authors.forename: Ding-Yah
authors.initials: DY
authors.lastname: Yang
mesh_terms: D001578:Benzopyrans / Q000138:chemical synthesis* / Q000737:chemistry; D003116:Color; D003374:Coumarins / Q000737:chemistry*; D007211:Indoles / Q000138:chemical synthesis* / Q000737:chemistry; D008958:Models, Molecular; D015394:Molecular Structure; D009574:Nitro Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D010777:Photochemistry; D013053:Spectrophotometry; D014961:X-Ray Diffraction
chemical_list: D001578:Benzopyrans; D003374:Coumarins; D007211:Indoles; D009574:Nitro Compounds; C088184:spiropyran; C030123:coumarin