CURRENT PROJECTS

Electrostatic catalysis - effect of static electric fields on chemical reactivity

  • Ciampi, S; Darwish, N.; Aitken, H. M.; Diez-Perez, I.; Coote, M.L., Harnessing electrostatic catalysis in single molecule, electrochemical and chemical systems: a rapidly growing experimental tool box. Chem. Soc. Rev. 2018, 47, DOI: 10.1039/C8CS00352A.
  • Zhang, L.; Laborda, E.; Darwish, N.; Noble, B. B.; Tyrell, J.; Pluczyk, S.; Brun, A. P. L.; Wallace, G. G.; Gonzalez, J.; Coote, M. L.; Ciampi, S., Electrochemical and Electrostatic Cleavage of Alkoxyamines. J. Am. Chem. Soc. 2018, 140, 766–774.
  • Aragonès, A. C.; Haworth, N. L.; Darwish, N.; Ciampi, S.; Bloomfield, N. J.; Wallace, G. G.; Diez-Perez, I.; Coote, M. L., Electrostatic catalysis of a Diels–Alder reaction. Nature 2016, 531, 88-91.
  • Zhang, L.; Vogel, Y. B.; Noble, B. B.; Gonçales, V. R.; Darwish, N.; Brun, A. L.; Gooding, J. J.; Wallace, G. G.; Coote, M. L.; Ciampi, S., TEMPO Monolayers on Si(100) Electrodes: Electrostatic Effects by the Electrolyte and Semiconductor Space-Charge on the Electroactivity of a Persistent Radical. J. Am. Chem. Soc. 2016, 138, 9611-9619.







Molecular electronics. Single-molecule and Single-particle circuitry

  • C.R. Peiris, Y.B. Vogel, A.P.L. Brun, A.C. Aragonès, M.L. Coote, I. Díez-Pérez, S. Ciampi,† N. Darwish,† Metal‒single-molecule‒semiconductor junctions formed by a radical reaction bridging gold and silicon electrodes, J. Am. Chem. Soc. , 2019, 141, 14788. 
  • C. Peiris, S. Ciampi, J. Zhang, E. M. Dief, P. Canfield, A. Le Brun, D. Kosov, J. Reimers, N. Darwish, Spontaneous S–Si bonding of alkanethiols to Si(111)–H: towards Si–molecule–Si circuits, Chemical Science, 2020, 11, 5246. 
  • Rahpeima, E. M. Dief, C. Peiris, S. Ferrie, X. Duan, S. Ciampi, C. L. Raston, N. Darwish, Reduced graphene oxide‒silicon interface involving direct Si‒O bonding as a conductive and mechanical stable ohmic contact, Chemical Communications, 2020, 56, 6209. 
  • Vogel, Y. B.; Zhang, J.; Darwish, N.; Ciampi, S., Switching of Current Rectification Ratios within a Single Nanocrystal by Facet-Resolved Electrical Wiring. ACS Nano, 2018, DOI: 10.1021/acsnano.8b02934.
  • Yueqi Li; Haworth, N. L.; Xiang, L.; Ciampi, S.; Coote, M. L.; Tao, N., Mechanical stretching-induced electron transfer reactions and conductance switching in single molecules. J. Am. Chem. Soc. 2017, 139, 14699–14706.
    A.C. Aragonès, N. Darwish, S. Ciampi, F. Sanz, J.J. Gooding, I. Díez-Pérez, Single-Molecule Electrical Contacts on Silicon Electrodes under Ambient Conditions, Nature Communications,  8, 15056 (2017).
  • Pla-Vilanova, P.; Aragonès, A. C.; Ciampi, S.; Sanz, F.; Darwish, N.; Diez-Perez, I., The spontaneous formation of single-molecule junctions via terminal alkynes. Nanotechnology 2015, 26, 381001.
  • Darwish, N.;* Aragonès, A. C.; Darwish, T.; Ciampi, S.;* Díez-Pérez, I.,* Multi-Responsive Photo- and Chemo-Electrical Single-Molecule Switches. Nano Lett. 2014, 14, 7064-7070.





Electrochemistry of semiconductors - charge transfer at chemically modified surfaces

  • Y.B. Vogel, A. Molina, J. Gonzalez, S. Ciampi, Quantitative analysis of cyclic voltammetry of redox monolayers adsorbed on semiconductors: isolating electrode kinetics, lateral interactions and diode currents, Analytical Chemistry, 2019, 91, 5929. 
  • Y. B. Vogel, N. Darwish, S. Ciampi, Spatiotemporal control of electrochemiluminescence guided by a visible light stimulus, Cell Reports Physical Science, 2020, 100107.
  • Vogel, Y. B.; Zhang, L.; Darwish, N.; Gonçales, V. R.; Le Brun, A.; Gooding, J. J.; Molina, A.; Wallace, G. G.; Coote, M. L.; Gonzalez, J.; Ciampi, S., Reproducible flaws unveil electrostatic aspects of semiconductor electrochemistry. Nature Communications 2017, 8 (1), 2066.
  • Vogel, Y. B.; Gonzalez, V. R.; Gooding, J. J.; Ciampi, S., Electrochemical Microscopy Based on Spatial Light Modulators: A Projection System to Spatially Address Electrochemical Reactions at Semiconductors. J. Electrochem. Soc. 2018, 165 (4).
  • Vogel, Y. B.; Darwish, N.; Kashi, M. B.; Gooding, J. J.; Ciampi, S., Hydrogen evolution during the electrodeposition of gold nanoparticles at Si(100) photoelectrodes impairs the analysis of current-time transients. Electrochim. Acta 2017, 247, 200-206.
  • Y. Yang, S. Ciampi, J.J. Gooding, Coupled Thermodynamic and Kinetic Changes in the Electrochemistry of Ferrocenyl Monolayers Induced by Light, Langmuir, (2017).
  • Choudhury, M. H.; Ciampi, S.; Yang, Y.; Tavallaie, R.; Zhu, Y.; Zarei, L.; Gonçales, V. R.; Gooding, J. J., Connecting electrodes with light: one wire, many electrodes. Chem. Sci. 2015, 6 (12), 6769-6776.
  • Yang, Y.; Ciampi, S.; Zhu, Y.; Gooding, J. J., Light-Activated Electrochemistry for the Two-Dimensional Interrogation of Electroactive Regions on a Monolithic Surface with Dramatically Improved Spatial Resolution. J. Phys. Chem. C 2016, 120 (24), 13032-13038.



Triboelectricity - green energy from friction

  • J. Zhang, S. Ferrie, S. Zhang, Y.B. Vogel, M.C.R. Peiris, N. Darwish, S. Ciampi, Single-electrode electrochemistry: chemically engineering surface adhesion and hardness to maximize redox work extracted from tribocharged silicon, ACS Applied Nano Materials, 2019, 2, 7230.
  • J. Zhang, F.J.M. Rogers, N. Darwish, V.R. Gonçales, Y.B. Vogel, F. Wang, J.J. Gooding, C. Peiris, G. Jia, J.-P. Veder, M.L. Coote, S. Ciampi, Electrochemistry on tribocharged polymers is governed by the stability of surface charges rather than charging magnitude, J. Am. Chem. Soc., 2019, 141, 5863. 
  • J. Zhang, C. Su, F. Rogers, N. Darwish, M. Coote, S. Ciampi, Irreproducibility in the triboelectric charging of insulators: evidence of a non-monotonic charge versus contact time relationship, Physical Chemistry Chemical Physics, 2020, 22, 11671.
  • J. Zhang, N. Darwish, M.L. Coote, S. Ciampi, Static electrification of plastics under friction: the position of engineering-grade polyethylene terephthalate in the triboelectric series, Advanced Engineering Materials, 2020, 22, 1901201. 
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