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Showing 1–14 of 14 results
Advanced filters: Author: Troy Van Voorhis Clear advanced filters

  • An important source of loss in solar cells is the recombination of the photogenerated charge carriers before they are extracted from the device. Chang et al. now show that such recombination can be reduced in organic solar cells by increasing the separation between donors and acceptors.

    • Wendi Chang
    • Daniel N. Congreve
    • Marc A. Baldo
    Research
    Nature Communications
    Volume: 6, P: 1-6

  • Triplet-fusion-based photon upconversion is promising for photovoltaic or bioimaging applications, but its efficiency is limited by triplet fusion spin dependence. Here, the authors tailor spin dynamics by engineering the crystal structure with metal–organic frameworks to enable effective spin mixing between singlet and quintet triplet–triplet pair states.

    • Dong-Gwang Ha
    • Ruomeng Wan
    • Mircea Dincă
    ResearchOpen Access
    Nature Materials
    Volume: 21, P: 1275-1281

  • The photons that make up visible light are indivisible. But certain organic materials can use singlet fission to divide the energy from one photon equally between two molecules. Experiments now reveal the molecular dynamics behind this phenomenon.

    • Troy Van Voorhis
    News & Views
    Nature Physics
    Volume: 11, P: 300-301

  • Calculating electronic spectra of large systems is computationally challenging. Here, the authors combine exact short-time dynamics with approximate frequency space methods to capture narrow features embedded in a dense manifold of smaller peaks.

    • Matthias Kick
    • Ezra Alexander
    • Troy Van Voorhis
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-11

  • N-heterocyclic carbenes (NHCs) are valuable surface anchors, but their use has remained limited to either spherical or planar nanomaterials. Now, they have been grafted onto gold nanorods through a bidentate ligand featuring a thiolate and a NHC–gold complex. The resulting nanorods are robust towards a wide range of harsh conditions and show promise for photothermal therapy.

    • Michelle J. MacLeod
    • Aaron J. Goodman
    • Jeremiah A. Johnson
    Research
    Nature Chemistry
    Volume: 11, P: 57-63

  • Incorporation of a π-clamp—a four-residue sequence (Phe-Cys-Pro-Phe)—into a protein enables the site-specific modification of the π-clamp cysteine side-chain. The π-clamp can be genetically encoded and does not require protecting-groups or catalysts to provide selective conjugation.

    • Chi Zhang
    • Matthew Welborn
    • Bradley L. Pentelute
    Research
    Nature Chemistry
    Volume: 8, P: 120-128

  • Colloidal CdSe nanocrystals hold great promise in applications due to their tunable optical spectrum. Using hybrid time-dependent density functional theory, the authors show that colloidal CdSe nanocrystals are inherently defective with a low energy spectrum dominated by dark, surface-associated excitations.

    • Tamar Goldzak
    • Alexandra R. McIsaac
    • Troy Van Voorhis
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-9

  • Iron- and nitrogen-doped carbon materials are effective catalysts for the oxygen reduction reaction whose active sites are poorly understood. Here, the authors establish a new pyridinic iron macrocycle complex as a more effective active site model relative to legacy pyrrolic model complexes.

    • Travis Marshall-Roth
    • Nicole J. Libretto
    • Yogesh Surendranath
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-14

  • Redox-active organic compounds that reversibly bind and release CO2 are promising candidates for carbon capture but are limited by the use of flammable, toxic aprotic electrolytes. Here the authors use salt-concentrated aqueous electrolytes in continuous CO2 separation with good performance metrics.

    • Yayuan Liu
    • Hong-Zhou Ye
    • T. Alan Hatton
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-11

  • Understanding the process of exciton fission, which occurs in certain organic materials, could lead to the development of more efficient photovoltaic devices. Here, an expression derived from first principles is used to accurately characterize the singlet fission rate of a wide array of materials, reproducing a transition from weak to strong coupling as a function of molecular separation.

    • Shane R. Yost
    • Jiye Lee
    • Troy Van Voorhis
    Research
    Nature Chemistry
    Volume: 6, P: 492-497