On-Demand Catalysed n-Doping of Organic Semiconductors.
Marc-Antoine StoeckelKui FengChi-Yuan YangXianjie LiuQifan LiTiefeng LiuSang Young JeongYoung Woo HanYao YaoMats FahlmanTobin J MarksSakshi SharmaAlessandro MottaXugang GuoSimone FabianoAntonio FacchettiPublished in: Angewandte Chemie (International ed. in English) (2024)
A new approach to control the n-doping reaction of organic semiconductors is reported using surface-functionalized gold nanoparticles (f-AuNPs) with alkylthiols acting as the catalyst only upon mild thermal activation. To demonstrate the versatility of this methodology, the reaction of the n-type dopant precursor N-DMBI-H with several molecular and polymeric semiconductors at different temperatures with/without f-AuNPs, vis-à-vis the unfunctionalized catalyst AuNPs, was investigated by spectroscopic, morphological, charge transport, and kinetic measurements as well as, computationally, the thermodynamic of catalyst activation. The combined experimental and theoretical data demonstrate that while f-AuNPs is inactive at room temperature both in solution and in the solid state, catalyst activation occurs rapidly at mild temperatures (~70 °C) and the doping reaction completes in few seconds affording large electrical conductivities (~10-140 S cm -1 ). The implementation of this methodology enables the use of semiconductor+dopant+catalyst solutions and will broaden the use of the corresponding n-doped films in opto-electronic devices such as thin-film transistors, electrochemical transistors, solar cells, and thermoelectrics well as guide the design of new catalysts.
Keyphrases
- room temperature
- ionic liquid
- gold nanoparticles
- solid state
- solar cells
- highly efficient
- quantum dots
- transition metal
- reduced graphene oxide
- healthcare
- primary care
- electronic health record
- molecular docking
- drug delivery
- molecularly imprinted
- visible light
- high resolution
- atomic force microscopy
- molecular dynamics simulations
- tandem mass spectrometry