701209-98-5

Basic information

• Product Name: 2H-Thieno[3,4-b][1,4]dioxepin, 3,3-bis(bromomethyl)-3,4-dihydro-
• CAS NO: 701209-98-5
• Molecular Formula: C9H10Br2O2S
• Molecular Weight: 342.051
• Mol File: 701209-98-5.mol
• Article Data: 7

Chemical Properties

• CAS DataBase Reference: 2H-Thieno[3,4-b][1,4]dioxepin, 3,3-bis(bromomethyl)-3,4-dihydro-(CAS DataBase Reference)
• NIST Chemistry Reference: 2H-Thieno[3,4-b][1,4]dioxepin, 3,3-bis(bromomethyl)-3,4-dihydro-(701209-98-5)
• EPA Substance Registry System: 2H-Thieno[3,4-b][1,4]dioxepin, 3,3-bis(bromomethyl)-3,4-dihydro-(701209-98-5)

Safety Data

• Hazardous Substances Data: 701209-98-5(Hazardous Substances Data)

Usage

General Description

2H-Thieno[3,4-b][1,4]dioxepin, 3,3-bis(bromomethyl)-3,4-dihydro- is a chemical compound with the molecular formula C10H10Br2O2S. It is a derivative of thienodioxepin and contains two bromomethyl groups. 2H-Thieno[3,4-b][1,4]dioxepin, 3,3-bis(bromomethyl)-3,4-dihydro- is used in organic synthesis and medicinal chemistry. It may have potential applications in the development of pharmaceutical drugs or as a building block for the synthesis of other organic compounds. Its specific properties and potential uses would depend on further research and testing.

Upstream product

• 51792-34-8 2,3-dimethoxythiophene 
• 3296-90-0 bis(bromomethyl)bis(hydroxymethyl)methane 

Downstream Products

• 634591-75-6 3,3-bis[[(2-ethylhexyl)oxy]methyl]-3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepin 

Relevant articles and documents

A side-chain defunctionalization approach yields a polymer electrochrome spray-processable from water

A π-conjugated electrochromic polymer (ECP) with alkyl ester side-chains is synthesized and subsequently defunctionalized to yield a polyionic salt readily soluble in water and further spray-processable from water. Upon neutralization, the defunctionalized polymer backbone recovers its electrochromic properties. The ability to print- or spray-process π-conjugated ECPs from aqueous media offers a sustainable alternative to traditional organic solvent-processing methods and could impact the development of non-emissive flexible display technologies. Copyright

Yellow electrochromic polymer materials with fine tuning electrofluorescences by adjusting steric hindrance of side chains

A series of novel conducting conjugated yellow-to-transmissive electrochromic (EC) polymers were designed and synthesized to research their structure-property relationships, achieving electrofluorescent (EF) switching with applied external potential. These bifunctional materials are based on repeat units of bi-phenyl-1,3,4-oxadiazole and thiophene derivatives with different side chains. The polymers present a similar yellow color and emit various fluorescences with applied reduction potential, and they can turn to nearly transparent and non-fluorescent with oxidization potential. The optical contrast, electrochemical, electrochromic and electrofluorescent switching properties were also characterized in detail. A device containing these polymers was also fabricated that can achieve electrochromic and electrofluorescent switching simultaneously, making these polymers promising candidates for electro-bifunctional materials.

Effects of Chemical Composition, Film Thickness, and Morphology on the Electrochromic Properties of Donor-Acceptor Conjugated Copolymers Based on Diketopyrrolopyrrole

A series of diketopyrrolopyrrole (DPP) and propylenedioxythiophene (ProDOT)-containing random copolymers with different donor-to-acceptor ratios is synthesized through Stille coupling polymerizations. The low-bandgap polymers display dark tones with colors ranging from magenta to blue, and reveal reversible colored-to-transmissive electrochromism in absorption/transmission-type devices with high optical contrasts (up to 48 and 77 in the visible and near-infrared regions, respectively), modest switching speeds (a few to tens of seconds) and coloration efficiencies (267-5742C-1), as well as good long-term ambient redox stabilities. The structure-performance relationship of the polymers, in particular, the role of donor-to-acceptor ratio, is investigated, and it is shown that an increase in the amount of acceptor in the polymers leads to slower oxidative but faster reductive switching, accompanied with enhancement of the redox stability. In addition, further study on the influence of film thickness and film morphology reveals that devices with higher optical contrasts are attainable from thicker polymer films at the expense of switching speeds; films with high uniformity and connectedness together with open, loose structures at submicron to micron scale are favorable for achieving good electrochromic performance. On and off: A series of electrochromic diketopyrrolopyrrole-based conjugated polymers are synthesized and characterized. Reversible colored-to-transmissive optical changes with high contrasts and ambient redox stabilities are observed (see figure). The influences of donor-to-acceptor ratio and film morphology on the electrochromic performance are addressed.