Welcome to the Wilson Lab, a research effort at the intersection of experimental physical chemistry & nanoscience in the Department of Chemistry at the University of Toronto.

We use spectroscopy to understand the excitonic materials that we make, and chart the flow of excitonic energy in the multi-component architectures that we fabricate. We apply this knowledge to build novel optoelectronic devices—particularly those that can interact with infrared light.

Research positions are available for motivated students. Information for graduate students can be found on the Departmental Website, including the Online Application Form. Please contact Prof. Wilson at mark.w.b.wilson@utoronto.ca for further information.

News in brief…

  • 2020-11-11 – Due to a coincidental overlap of some mandatory in-person laser safety training and ‘shift change’, the entire WilsonLab is on campus at once for the first time since March. And it was (kind of) sunny outside! Seized the chance for a physically-distant photo op (thank you Antoine!). Research continues (stay tuned for more stories!), but year 5 of the Wilsonlab will be unlike any other!

  • 2020-09-25 – The WilsonLab sends its thanks to Nick Uhas for giving his permission to Mark to show his youtube video in CHM135. Because few things demonstrate the power of a catalyst than the ‘Elephant Toothpaste’ reaction… run on the ton scale!!
  • 2020-09-08 – After an extraordinary summer for us all, we were thrilled to welcome new doctoral students Francisco, from the Majewski Lab at Concordia, and Maxine from the Dasog Lab at Dalhousie.
    Canadian Nanoscience: Let our powers combine! ♁

  • 2020-09-07 – Philippe is at it again, with a new paper in J. Mater. Chem. C. showing that glycol ethers themselves can shape the nucleation dynamics of PbS nanocrystals by suppressing the lead-rich cluster intermediate. This effect correlates with multidentate co-ordination to Pb(oleate)_2, corroborated by DFT calculations from our collaborators in Prof. Voznyy’s Clean Energy group at UofT Scarborough.

    In the colloidal synthesis of PbS quantum dots, added glycol ethers variably suppress the formation of metastable cluster intermediates. This achieves control of nanocrystal size in reactions run to completion.

    Check out WilsonLab ResearchTalks to listen to Phil tell his own story!

  • 2020-07-27 – Sometimes science surprises. Read in JPC Letters how Minhal showed that sub-bandgap optical modulation suppresses long-duration ON events in CdSe|ZnS quantum dots—in a timescale-free manner! (Summary) Or, better still, listen to him tell the story himself in one of the first WilsonLab ResearchTalks

    We develop an all-optical modulation scheme and demonstrate that sub-bandgap light tuned to the stimulated emission transition perturbs the blinking statistics of individual CdSe/ZnS core/shell QDs. Resonant optical modulation progressively suppresses long-duration ON events, quantified by a power-law slope that is more negative on average (Δα_ON = 0.46 ± 0.09), while OFF distributions and truncation times are unaffected.

  • 2020-07-10 – To celebrate papers, comprehensives, courses, and a safe return to physically-distant-labwork-on-rotation, the WilsonLab manages a socially-distant social via drawasaurus.org. In Reasons that Mark went into science, Episode 4306, I give you… ‘Schlenk Line’
  • 2020-05-01 – Thrilled to share Philippe’s discovery that small, lead-rich, pre-nucleation clusters complicate the growth kinetics of small PbS nanocrystals, but can be controlled with amine additives to yield unprecedentedly narrow ensemble linewidths! Paper in Chemsitry of Materials, summary here! Graphs showing that amine additives accelerate PbS nanocrystal nucleation by suppressing a cluster intermediate, leading to narrower ensemble linewidths for small (diameter less than 4nm) nanocrystals

Clara