251-41-2 Usage
Description
Thieno[3,2-b]thiophene (TT), also known as thienothiophene, is a heterocyclic compound belonging to the family of fused thiophenes. It is an electron-rich conjugated polymer with a quinoidal structure and a narrow band gap, which promotes strong intermolecular networking. Thieno[3,2-b]thiophene is a white to yellow solid and is widely used as an intermediate for the synthesis of small molecules and polymers in the application of organic field-effect transistors (OFETs) and organic photovoltaic devices (OPV).
Uses
1. Used in Organic Solar Cells:
Thieno[3,2-b]thiophene is used as conjugated side chains in the synthesis of donor-acceptor copolymers for organic solar cells. Its application aims to enhance the power conversion efficiency (PCE) of these solar cells by leveraging its electron-rich conjugated polymer properties and strong intermolecular networking.
2. Used in Organic Field-Effect Transistors (OFETs):
Thieno[3,2-b]thiophene serves as an intermediate for the synthesis of small molecules and polymers in the application of organic field-effect transistors. Its unique structure and properties contribute to the development of high-performance OFETs.
3. Used in Organic Photovoltaic Devices (OPV):
Thieno[3,2-b]thiophene is also utilized as an intermediate in the synthesis of materials for organic photovoltaic devices. Its electron-rich nature and quinoidal structure play a crucial role in improving the efficiency and performance of these devices.
Classification
Thiophene, Fused thiophene, Dithiapentalene, Heterocylic aromatics, Five-membered ring, Semiconductor synthesis intermediates, Low band gap polymers OFETs, Organic Photovoltaics, Polymer solar cells
preparation
Thieno[3,2-b]thiophene, also known as thienothiophene (TT), is a heterocyclic compound. It belongs to the family of fused thiopehenes and is widely used as an intermediate for the synthesis of small molecules and polymers in the application of organic field-effect transistors (OFETs) and organic photovoltaic devices (OPV).
Fused thiophenes are more electron-rich and more structurally rigid, with extended π-conjugation so they are good candidates for adjusting the band gap of the organic polymer semiconducting materials, i.e. Poly[2,5-bis(3-hexadecylthiophen-2-yl)thieno[3,2-b]thiophene] (also known as PBTTT).
Check Digit Verification of cas no
The CAS Registry Mumber 251-41-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 2,5 and 1 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 251-41:
(5*2)+(4*5)+(3*1)+(2*4)+(1*1)=42
42 % 10 = 2
So 251-41-2 is a valid CAS Registry Number.
InChI:InChI=1/C6H4S2/c1-3-7-6-2-4-8-5(1)6/h1-4H
251-41-2Relevant articles and documents
Small isomeric push-pull chromophores based on thienothiophenes with tunable optical (non)linearities
Podlesny, Jan,Pytela, Old?ich,Klikar, Milan,Jelínková, Veronika,Kityk, Iwan V.,Ozga, Katarzyna,Jedryka, Jaroslaw,Rudysh, Myron,Bure?, Filip
, p. 3623 - 3634 (2019/04/14)
Fourteen new D-π-A push-pull chromophores based on two isomeric thienothiophene donors and seven acceptors of various electronic natures have been designed and conveniently synthesized. In contrast to known thienothiophene push-pull molecules, the prepared small chromophores proved to be organic materials with easily tunable thermal, electrochemical and (non)linear optical properties. It has also been shown that small structural variation may result in significantly improved/varied fundamental properties. Very detailed structure-property relationships were elucidated within the systematically developed series of push-pull molecules, which may serve as a useful guide in designing new D-π-A molecules based on fused thiophene scaffolds.
Conjugated polymer for organic thin-film transistor comprising of Quinoxaline and Thieno[3,2-b]thiophene
-
, (2016/12/12)
The present invention refers to [...] thieno [3, 2-b] thiophene using organic thin film transistor (organic thin-film transistor, OTFT) (conjugated polymer) relates to conjugated macromolecule type transition for electrolyte, more particularly 2, 3-bis (4- [...]) [...] -5, 8-(2, -5, 8-dibromoquinoxaline 3-Bis (4-hexylphenyl)) and 2, 5-bis (tri-n-methyl [...])-thieno [3, 2-b] thiophene (2, 5-Bis (Tri-n-methylstannyl)-thieno [3, 2-b] thiophene) Stille-coupling reactions of a produced through forging by use of conjugated macromolecule relates to (conjugated polymer). The present invention according to a heat conjugated macromolecule , each -3.3eV and -5.1eV HOMO and a LUMO value, the (band gap energy) 1.8eV band gap energy to useful as for anti-organic solar cells can be used. (by machine translation)
Preparation of 4,7-dibromobenzo[b]thiophene as a versatile building block and synthetic application to a bis(ethynylthienyl)oligoarene system
Yamamoto, Takuya,Katsuta, Hiroshi,Toyota, Kozo,Iwamoto, Takeaki,Morita, Noboru
, p. 613 - 623 (2012/06/29)
Benzo[b]thiophene, 4,7-dibromobenzo[b]thiophene, thieno[3,2-b]thiophene, and 3-bromothieno[3,2-b]thiophene were prepared by AuCl-catalyzed cyclization of (t-butylsulfanyl)(ethynyl)benzenes or (t-butylsulfanyl)(ethynyl)thiophenes. Several reactions of 4,7-dibromobenzo[b]thiophene were investigated, including metallation and cross coupling reactions.