Synthesis and characterization of coumarin-based spiropyran photochromic colorants.
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.
Chen
Jhih-Rong
JR
Department of Chemistry, Tunghai University, 181, Taichung-Kang Road Sec. 3, Taichung, Taiwan 407.
Wong
Jen-Bing
JB
Kuo
Pei-Yu
PY
Yang
Ding-Yah
DY
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
D001578:Benzopyrans; D003374:Coumarins; D007211:Indoles; D009574:Nitro Compounds; C088184:spiropyran; C030123:coumarin