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Amelia Fuller

Santa Clara University, CA·Chemistry

Gold nanoparticles are extremely sensitive to light, which makes them useful materials for medical diagnostics and sensing. To work in water-rich settings such as body fluids, though, they need a coating of molecules.

Fields

Chemistry

Materials Science

Topics

gold nanoparticles

colloidal gold

nanoparticle stability

Grants
1 known grant, through Aug 2027

What they work on

  1. Synthesize and purify dozens of sequence-specific peptoids, chains of N-substituted glycines, that carry a wide diversity of chemical groups, for use as coatings (capping ligands) on gold nanoparticles.
  2. Measure how well each peptoid keeps gold nanoparticles of different sizes from clumping in water containing salts and proteins.
  3. Identify the molecular features of peptoid coatings that give the best nanoparticle stability, producing predictive design guidelines.

More about the research

Without one, salts and proteins cause the particles to clump into useless, insoluble aggregates. A good coating packs tightly on the gold surface, keeps the particle dissolved and shields it from those triggers. This project asks which molecular features make the best coating.

Why it matters

Gold nanoparticles are used in medical diagnostics and sensing, but they clump and stop working in salty, protein-rich fluids. Design rules for peptoid coatings that keep them stable could make peptoid-coated nanoparticles practical in a wide range of sensing and diagnostic tests.

Known grants

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

RUI: Developing Predictive Guidelines to Stabilize Gold Nanoparticles with Peptoids

NSF · Sep 2023 – Aug 2027

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The school

Santa Clara University: 8 labs on PI Pages, $8M a year on research, 24 research doctorates a year.

More about Santa Clara University

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