James D. Ng
University of Wisconsin-Madison
5 Papers
19 Citations
James D. Ng is an academic researcher from University of Wisconsin-Madison. The author has contributed to research in topics: Chemistry & Population. The author has an hindex of 5, co-authored 5 publications.
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Papers
Single-Molecule Investigation of Initiation Dynamics of an Organometallic Catalyst
James D. Ng,Sunil P. Upadhyay,Angela N. Marquard,Katherine M. Lupo,Daniel A. Hinton,Nicolas A. Padilla,Desiree M. Bates,Randall H. Goldsmith +7 more
TL;DR: This work presents the first combined investigation of the initiation dynamics of an operational palladium cross-coupling catalyst at the bulk and single-molecule levels, including under turnover conditions and reveals how structural diversity at a surface translates into heterogeneity in catalyst behavior.
61
Mapping Forbidden Emission to Structure in Self-Assembled Organic Nanoparticles
Daniel A. Hinton,James D. Ng,Jian Sun,Stephen Lee,Semion K. Saikin,Semion K. Saikin,Jenna L. Logsdon,David S. White,Angela N. Marquard,Andrew C. Cavell,Veronica K. Krasecki,Kassandra A. Knapper,Katherine M. Lupo,Michael R. Wasielewski,Alán Aspuru-Guzik,Julie S. Biteen,Padma Gopalan,Randall H. Goldsmith +17 more
TL;DR: It is shown that a spirofluorene-functionalized boron-dipyrromethene with an alkyl norbornyl tail self-assembles into nanoparticles with qualitatively different properties as compared to the polymerized species, providing a striking example of how physical structure and electronic properties are intertwined.
21
Optically Detected Magnetic Resonance for Selective Imaging of Diamond Nanoparticles.
Margaret E. Robinson,James D. Ng,Huilong Zhang,Joseph T. Buchman,Olga A. Shenderova,Christy L. Haynes,Zhenqiang Ma,Randall H. Goldsmith,Robert J. Hamers +8 more
TL;DR: This work represents the first investigation showing how nanoparticle diameter impacts the NV center lifetime and thereby directly impacts the accessible contrast and signal-to-noise ratio when using ODMR to achieve background-free imaging of NV-nanodiamonds in the presence of interfering fluorophores.
17
Probing Heterogeneity and Bonding at Silica Surfaces through Single-Molecule Investigation of Base-Mediated Linkage Failure
TL;DR: Kinetic analysis elucidates the role of thermal annealing and addition of blocking layers in increasing stability and demonstrates that the innate structural diversity of the silica surface is likely the cause of observed heterogeneity in surface-linkage disruption kinetics.
13
Fluorescent Dendrimeric Molecular Catalysts Demonstrate Unusual Scaling Behavior at the Single-Molecule Level
Sunil P. Upadhyay,Katherine M. Lupo,Angela N. Marquard,James D. Ng,Desiree M. Bates,Randall H. Goldsmith +5 more
TL;DR: A series of surface-supported molecular palladium catalysts were synthesized using a dendrimeric attachment motif to incorporate multiple BODIPY fluorophores for single-molecule fluorescence microscopy, where an unusual fluorescence intensity scaling law was observed.