311073

Sigma-Aldrich

2,2′:5′,2′′-Terthiophene

99%

Synonym(s):
2,5-Di(2-thienyl)thiophene, α-Terthienyl
Empirical Formula (Hill Notation):
C12H8S3
CAS Number:
Molecular Weight:
248.39
Beilstein/REAXYS Number:
178604
MDL number:
PubChem Substance ID:
NACRES:
NA.23

assay

99%

mp

93-95 °C (lit.)

SMILES string

c1csc(c1)-c2ccc(s2)-c3cccs3

InChI

1S/C12H8S3/c1-3-9(13-7-1)11-5-6-12(15-11)10-4-2-8-14-10/h1-8H

InChI key

KXSFECAJUBPPFE-UHFFFAOYSA-N

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General description

2,2′:5′,2′′-Terthiophene (TTh) may be prepared by nickel catalysed coupling reaction of grignard′s reagent derived from 2-bromothiophene and magnesium. It generates singlet oxygen. In nature, it is found in the floral extract of Tagetes minuta and Echinops grijisii. It is known to be toxic to mosquitoes. It also exihibits antifungal activity.
2,2′:5′,2′′-Terthiophene (3T) is a tri-thiophene based low band conductive polymer that is prepared by reacting 2,5-dibromothiophene and thienylmagnesium bromide in the presence of nickel catalyst.

Application

3T can be combined with 3,4-ethylenedioxythiophene (EDOT) in a tetrabutylammonium perchlorate solution for use as an electrochromic copolymer for a wide range of applications like photovoltaics and polymer light emitting diodes (LEDs). It can also be used to form metal-organic based thin films with metals like aluminum, silver, and calcium which can potentially be used for optoelectronics based applications.
Electrochemical copolymerization of carbazole and TTh in sodium perchlorate/acetonitrile was reported. Electrochromic copolymer based on TTh and 3, 4-ethylenedioxythiophene has been reported. TTh acts as a monomer precursor for polythiophene and as a dopant for polycarbonate. It may function as a photosensitizer.

Packaging

1 g in glass bottle

storage_class_code

13 - Non Combustible Solids

WGK Germany

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

Effect of hole transporting materials in phosphorescent white polymer light-emitting diodes
Lee D, et al.
Organic Electronics, 11(3), 427-433 (2010)
Man Jae Park et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 18(7), 2056-2062 (2012-01-18)
Excess-electron transfer (EET) in DNA has attracted wide attention owing to its close relation to DNA repair and nanowires. To clarify the dynamics of EET in DNA, a photosensitizing electron donor that can donate an excess electron to a variety...
Synthesis and characterization of an electrochromic copolymer based on 2, 2′ : 5′ , 2″ -terthiophene and 3, 4-ethylenedioxythiophene
Ahmed MS, et al.
Applied Nanoscience, 2(2), 133-141 (2012)
Synthesis and characterization of an electrochromic copolymer based on 2,2':5',"-terthiophene and 3,4-ethylenedioxythiophene
Ahmed MS, et al.
Applied Nanoscience, 2, 133-141 (2012)
Journal of Non-Crystalline Solids, 164, 1263-1263 (1993)

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