Iron 3 p toluenesulfonate hexahydrate

Manufactured by Merck Group

Sourced in United States

Iron(III) p-toluenesulfonate hexahydrate is a chemical compound with the molecular formula Fe(C7H7SO3)3·6H2O. It is a crystalline solid that is used as a precursor in various chemical reactions and applications.

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Iron (III) hexahydrate Iron III

6 protocols using iron 3 p toluenesulfonate hexahydrate

Synthesis and Characterization of PEDOT-Tos Films

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We synthesized the PEDOT-Tos in the following way; 50 µL of 3,4-ethylenedioxythiophene (EDOT, Aldrich, Saint Louis, MO, USA) was added to a solution of iron(III) p-toluenesulfonate hexahydrate (Aldrich, Saint Louis, USA) with different concentrations (1, 10, 20, 40, 60, and 80 wt % with respect to n-butanol) in 1 mL of n-butanol. The prepared solutions were coated on a glass substrate by spin-coating at 1000 rpm for 30 s; in situ polymerization and doping were performed at 100 °C for 5 min. The PEDOT-Tos films were washed in n-butanol several times to remove residual iron species as by-products. Powders of PEDOT-Tos were prepared by the same synthesis method as above and centrifuged in n-butanol to remove by-products and solvent.

Kim J.S., Jang W, & Wang D.H. (2018). The Investigation of the Seebeck Effect of the Poly(3,4-Ethylenedioxythiophene)-Tosylate with the Various Concentrations of an Oxidant. Polymers, 11(1), 21.

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In Situ Polymerization of Polythiophene Films

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The in situ polymerization was
performed by spin coating the metastable reaction mixture of 2,2′-bithiophene
(Alfa Aesar) and iron(III) p-toluenesulfonate hexahydrate
(Aldrich) in 1-propanol (synthesis grade, Roth). The precleaned glass
substrates were coated with thin layers of polypropylene (Aldrich)
by spin coating from 1-chlorobenzene (synthesis grade, Roth) to increase
the adhesion of the polythiophene films during the posttreatment steps.
All chemicals involved were used without further purification. The
metastable reaction mixture was spin coated with 2000 rpm for 60 s
at a substrate temperature of 90 °C. Afterwards, the films were
rinsed in either acetonitrile (doped polythiophene films) or ethanol
(undoped polythiophene) for 30 min. Finally, the undoped PT films
were annealed at 200 °C for 10 min in ambient atmosphere. For
each experiment, the sum of the molar concentrations of PT and FeTos
in the reaction mixture was kept constant upon variation of the ratio
between them. Nevertheless, the overall concentration was set to match
the resulting thickness required for each experimental method.

Lebert J., Kratzer E.M., Bourdick A., Coric M., Gekle S, & Herzig E.M. (2018). Directing the Aggregation of Native Polythiophene during in Situ Polymerization. ACS Omega, 3(6), 6388-6394.

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Electrochemical Biosensor Fabrication

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Molybdenum chloride, ethanol, phosphate-buffered saline (PBS), ammonium hydroxide, aniline, carbon ink (E3449), and Ag/AgCl ink (E2414) were purchased from Thermo Fisher Scientific. Lactate, UA, glucose, CAF, putrescine, cadaverine, glucose oxidase, iron(III) p-toluene sulfonate hexahydrate, and graphite flakes were purchased from Sigma-Aldrich. ZnO nanowires (NWZO01A5) were purchased from ACS Material. PDMS (Sylgard 184) was purchased from Dow. PI (Kapton 100HN) was received from Dupont. SEBS (H1062) was received from Asahi Kasei. Nafion solutions and WSe₂ were purchased from Alfa Aesar.

Zhao G., Ling Y., Su Y., Chen Z., Mathai C.J., Emeje O., Brown A., Alla D.R., Huang J., Kim C., Chen Q., He X., Stalla D., Xu Y., Chen Z., Chen P.Y., Gangopadhyay S., Xie J, & Yan Z. (2022). Laser-scribed conductive, photoactive transition metal oxide on soft elastomers for Janus on-skin electronics and soft actuators. Science Advances, 8(25), eabp9734.

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Functionalized EDOT-based Conductive Polymers

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Hydroxymethyl EDOT (EDOT-OH, 95%), sodium hydride (NaH, 60% dispersion in mineral oil), trityl chloride (97%), magnesium sulfate (MgSO₄), potassium carbonate (K₂CO₃), triphenylphosphine (PPh₃), Amberlite IR-120 resin, sodium methoxide (NaOMe), iron(III) p-toluenesulfonate hexahydrate (technical grade), imidazole (IM, 99%), dimethyl sulfoxide (DMSO), (3-glycidoxypropyl)trimethoxysilane (GOPS, ≥98%), hydrogen tetrachloroaurate(III) hydrate (HAuCl₄), trisodium citrate dihydrate (TSC, 99%), DA, AA, UA, and PC were purchased from Sigma–Aldrich. The aqueous PEDOT:PSS solution (Clevios PH1000, PEDOT:PSS ratio = 1:2.5) was purchased from Heraeus with a solid concentration 1.0–1.3 wt%. Tetrahydrofuran (THF), ethyl acetate (EA), hexane, acetone, carbon tetrabromide (CBr₄), potassium thioacetate (KSAc), hydrochloric acid (HCl, 37%), and nitric acid (HNO₃, 70%) were purchased from Acros Organics. All materials and reagents were used as received without further purification. The aqueous solutions were prepared with deionized (DI) water from a Millipore Milli-Q water treatment system (18.2 MΩ cm⁻¹).

Chou J.A., Chung C.L., Ho P.C., Luo C.H., Tsai Y.H., Wu C.K., Kuo C.W., Hsiao Y.S., Yu H.H, & Chen P. (2019). Organic Electrochemical Transistors/SERS-Active Hybrid Biosensors Featuring Gold Nanoparticles Immobilized on Thiol-Functionalized PEDOT Films. Frontiers in Chemistry, 7, 281.

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Synthesis of MWCNT Sheets for Energy Applications

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Multi-walled carbon nanotube (MWCNT) sheets were drawn from ~400 μm high MWCNT forests27 (link) that were grown by chemical vapor deposition on iron catalyst-coated silicon wafers using acetylene (C2H2) gas as the carbon precursor36 (link). Iron(III)p-toluene sulfonate hexahydrate (Fe(III)PTS; Mw, 677.52), pyridine (anhydrous, 99.8%), 1-butanol (≥99%), and 3,4-ethylenedioxythiophene (EDOT) monomer (97%) were purchased from Sigma-Aldrich. Sulfuric acid solutions (2N; 1 M H₂SO₄) were purchased from Daejung Chemicals.

Kim T.H., Kwon C.H., Lee C., An J., Phuong T.T., Park S.H., Lima M.D., Baughman R.H., Kang T.M, & Kim S.J. (2016). Bio-inspired Hybrid Carbon Nanotube Muscles. Scientific Reports, 6, 26687.

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Synthesis of EDOT-based Conductive Polymer

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Sodium hydroxide (ACS, 99% purity), hydrochloric acid (ACS, 99% purity), 3,4-ethylenedioxythiophene (EDOT, 97% purity), iron(III) p-toluenesulfonate hexahydrate (quality level 100), potassium bromide (KBr, FTIR grade), and 2-Propanol (IPA, ACS reagent, quality level 300) were purchased from Sigma-Aldrich (San José, Costa Rica).

Rodríguez-Quesada L., Ramírez-Sánchez K., León-Carvajal S., Sáenz-Arce G., Vásquez-Sancho F., Avendaño-Soto E., Montero-Rodríguez J.J, & Starbird-Perez R. (2023). Evaluating the Effect of Iron(III) in the Preparation of a Conductive Porous Composite Using a Biomass Waste-Based Starch Template. Polymers, 15(11), 2560.

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