459424-52-3

Upstream product

• 459424-51-2 5-methoxy-2-phenylthiazole 
• 1205-08-9 methyl hippurate 

Downstream Products

• 500004-38-6 1-(5-methoxy-2-phenylthiazol-4-yl)-2-(5-methyl-2-phenylthiazol-4-yl)perfluorocyclopentene 
• 459424-54-5 1,2-bis(5-methoxy-2-phenylthiazol-4-yl)perfluorocyclopentene 
• 1467737-27-4 1-(5-methoxy-2-phenyl-4-thiazolyl)-2-(2-methyl-1-phenyl-1-propenyl)perfluorocyclopentene 
• 459424-53-4 1-(5-methoxy-2-phenylthiazol-4-yl)perfluorocyclopentene 

Relevant academic research and scientific papers

PHOTOCHROMIC MATERIAL

A photochromic material having a ring opening quantum yield of 10-3 or lower which does not fade under ambient light is provided. The material comprises a compound belonging to the diheteroarylethene class. The compound has alkoxy group and ary

Photochromism of Dithiazolylethenes Having Methoxy Groups at the Reaction Centers

Photochromic dithiazolylethenes [1,2-bis(5-methoxy-2-phenylthiazol-4-yl)perfluorocyclopentene (1a) and (5-methoxy-2-phenylthiazol-4-yl)-2-(5-methyl-2-phenylthiazol-4-yl)perfluorocyclopentene (2a)] having methoxy substituents at the reaction centers were synthesized and their photochromic reactivity was compared with 1,2-bis(5-methyl-2-phenylthiazol-4-yl)perfluorocyclopentene (3a), which has methyl substituents at the reaction centers. All dithiazolylethene derivatives underwent reversible photocyclization reactions from the open-ring forms 1a, 2a, and 3a to the closed-ring forms 1b, 2b, and 3b, respectively. The photocyclization quantum yields of 1a and 2a were only slightly lower than that of 3a, while the photocycloreversion quantum yields of 1b and 2b dramatically decreased relative to that of 3b by factors of 100 and 10, respectively. Absorption maxima of dithiazolylethene derivatives 1b, 2b, and 3b showed a hypsochromic shift as much as 50-80 nm relative to that of dithienylethene derivatives. This is explained by the difference in the HOMO-LUMO band gap between the two systems.