406940-42-9

Basic information

• Product Name: 2H-Thieno[3,4-b][1,4]dioxepin, 3,4-dihydro-3,3-bis(phenylmethyl)-
• CAS NO: 406940-42-9
• Molecular Formula: C21H20O2S
• Molecular Weight: 336.455
• Mol File: 406940-42-9.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: 2H-Thieno[3,4-b][1,4]dioxepin, 3,4-dihydro-3,3-bis(phenylmethyl)-(CAS DataBase Reference)
• NIST Chemistry Reference: 2H-Thieno[3,4-b][1,4]dioxepin, 3,4-dihydro-3,3-bis(phenylmethyl)-(406940-42-9)
• EPA Substance Registry System: 2H-Thieno[3,4-b][1,4]dioxepin, 3,4-dihydro-3,3-bis(phenylmethyl)-(406940-42-9)

Safety Data

• Hazardous Substances Data: 406940-42-9(Hazardous Substances Data)

Upstream product

• 51792-34-8 2,3-dimethoxythiophene 
• 31952-16-6 2,2-dibenzyl-1,3-propanediol 
• 100-44-7 benzyl chloride 
• 597-55-7 dibenzylmalonic acid diethyl ester 

Downstream Products

• 738625-79-1 3,4-(2,2-dibenzylpropane-1,3-diyldioxy)-2,5-bis(hydroxyphenylmethyl)thiophene 

Relevant articles and documents

Substituent and heteroatom effects on the electrochromic properties of similar systems

Electrochromic polymers called poly(3,4-dihydro-3,3-bis ((naphthalen-1-yl)methyl)-2H-thieno[3,4-b][1,4]dioxepine) (PProDOT-Np 2), poly(3,3-dibenzyl-3,4-dihydro-2H-selenopheno[3,4-b][1,4] dioxepine), and poly(3,3-dibenzyl-3,4-dihydro-2H-thieno[3

Rational design of an electrochromic polymer with high contrast in the visible region: Dibenzyl substituted poly(3,4-propylenedioxythiophene)

A dibenzyl substituted poly(3,4-propylenedioxythiophene) was designed and synthesized, and exhibited a contrast of 89% at 632 nm with switching speeds of 400 ms and coloration efficiency of 575 cm2 C-1.