IMRA America Release: Gold Nanoparticles Produced by Femtosecond Laser

Janurary 23, 2012 - Ann Arbor —IMRA America is pleased to introduce i-ColloidTM-Au, a series of colloidal gold nanoparticles, the first commercially available gold nanoparticle reagent made by femtosecond pulsed laser-based physical processes, with both high purity and high stability.

i-ColloidTM-Au Pure is a colloidal solution of uncapped Au nanoparticles, containing no citrate or surfactants, which is ready for controllable and flexible conjugation without the influence of stabilizers and impurities. One of the advantages of the bare gold nanoparticles has been demonstrated for controllable PEGylation, and the results are published in the Journal of Physical Chemistry C (115, 47, 23293, 2011).

i-ColloidTM-Au Single Conjugates provide gold nanoparticles with partially PEGylated surface, which enables simple processes for subsequent conjugation of any other functional ligands while maintaining stability in buffer solutions or in high-ionic-strength biological media. The amount of PEG (poly ethylene glycol) molecules conjugated on the gold surface can be designed to customer specifications.

i-ColloidTM-Au Multiple Conjugates provide gold nanoparticles conjugated with at least two types of functional ligands directly bound to the gold surface. For example, PEG is one ligand that maintains stability in buffer solutions or biological media, and peptide is another ligand used to realize immunological and biological functions. The type and the amount of ligands can be designed to customer specifications.

The i-ColloidTM-Au Series will be on display, for the first time, at the upcoming SPIE Photonics West Exhibition in San Francisco, January 24-26, 2012.

About IMRA America

Founded in 1990, IMRA America, Inc., headquartered in Ann Arbor, Mich., is a global-acting company dedicated to being the leader in the development of innovative technologies for commercial applications. IMRA is a worldwide leader in the field of ultra-fast fiber lasers with over 150 U.S. patents and patent applications and many more internationally. As a wholly-owned subsidiary of Aisin Seiki, a global Fortune 500 company, IMRA seeks to identify and develop nascent technologies that have the potential to grow into dominant positions in their targeted markets.

For more information, please contact:

IMRA America, Inc.

1044 Woodridge Avenue

Ann Arbor, MI 48105

Phone: (734) 930-2560

Fax: (734) 930-9957

e-mail: lasers@imra.com