PIPages
Labs

Michael Stollenz

Kennesaw State University, GA·Chemistry

When metal atoms such as copper, silver and gold sit in a row very close together inside a molecule, the molecule can glow brightly. Its color and brightness depend on its exact shape.

Fields

Chemistry

Materials Science

Topics

inorganic chemistry

coordination chemistry

organometallic chemistry

Grants
1 known grant, through Jul 2027

What they work on

  1. Synthesize a library of bis(amidine) ligands that can hold at least four copper(I) ions in a linear row, using mesitylcopper as a clean organometallic copper source.
  2. Prepare new dinuclear metalloligands by capping end nitrogen groups with copper, silver or gold fragments, and use them to assemble straight or bundled copper, copper/silver and copper/gold cluster arrays.
  3. Determine how straight versus bent (coil-like) arrangements of coinage metal ions change luminescence, using crystallography and spectroscopy to link structure to light emission.

More about the research

Such "molecular strings" could act as tiny wires, and bent versions as tiny coils, in electronic devices far smaller than today's chips. Glowing complexes of these coinage metals are also used in organic light-emitting diodes (OLEDs), the light sources in many displays.

Why it matters

Understanding how shape controls light emission in multi-metal chains could guide the design of better luminescent materials for OLEDs. In the long run, coiled metal chains might serve as tiny electromagnets in nanoscale electronic devices, such as drug-delivering nanorobots whose path could be tracked by fluorescence imaging. The methods also add basic knowledge of how multi-metal complexes form and assemble.

Known grants

From NIH and NSF research grants. Labs often have other funding we can't see.

Highly Luminescent Multinuclear Coinage Metal Arrays with a Twist: A New Approach to Design Light-Emitting Molecular Strings and Coils

NSF · Aug 2022 – Jul 2027

Closest labs

Thomas Teets

University of Houston, TX·Chemistry

Increase the light-emission speed of blue-emitting platinum aryl acetylide complexes through a "secondary heavy-metal effect," attaching coinage metals or gold–carbon bonds to the molecule's periphery.

Benjamin Augenbraun

Williams College, MA·Physics

Measure the electronic, vibrational, rotational, and hyperfine (nuclear spin) structure of molecules pairing copper, silver, or gold with lead, using laser spectroscopy to see which wavelengths of light they absorb.

Virginia Montiel-Palma

Mississippi State University, MS·Chemistry·Early-career

Design heterobimetallic complexes combining a late transition metal with a group-13 metal that bind nitrogen-containing aromatic compounds and cleave their carbon–nitrogen bonds at low hydrogen pressure.

The school

Kennesaw State University: 6 labs on PI Pages, $52M a year on research, 82 research doctorates a year.

More about Kennesaw State University

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