Multimode Chiroptical Spectrometer for Nanoparticle Characterization

Multimode Chiroptical Spectrometer for Nanoparticle Characterization

Award Information
Agency: Department of Commerce
Branch: National Institute of Standards and Technology
Contract: 70NANB18H187
Agency Tracking Number: 005-02-07 (FY18)
Amount: $99,970.39
Phase: Phase I
Program: SBIR
Awards Year: 2018
Solicitation Year: 2018
Solicitation Topic Code: N/A
Solicitation Number: 2018-NIST-SBIR-01
Small Business Information
3701 Kirby Drive, Ste 994, Houston, TX, 77098
DUNS: 184353774
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Tonya Cherukuri
 (713) 521-1450
 tkc@appliednano.com
Business Contact
 Tonya Cherukuri
Phone: (713) 521-1450
Email: tkc@appliednano.com
Research Institution
N/A
Abstract
This project will develop a new scientific instrument optimized for the advanced characterization of near-infrared fluorescent nanoparticles that can exist as left- or right-handed structures (enantiomers). Single-walled carbon nanotubes (SWCNTs) are currently the leading example of such nanomaterials. Applied NanoFluorescence, LLC (ANF) proposes a novel multi-mode chiroptical spectrometer that can distinguish left and right enantiomers through their differing interactions with circularly polarized light. The proposed instrument will offer four complementary measurement modes. These modes are (1) fluorescence-detected circular dichroism (FDCD) spectra with visible excitation (400-700 nm) and near-infrared emission (900-1600 nm); (2) rapid excitationemission fluorimetry covering the same visible excitation and near-infrared emission ranges; (3) direct nearinfrared circular dichroism absorption spectra; and (4) normal near-infrared absorption spectra. Unlike existing FDCD instruments, mode (1) will offer spectral selection of the emission wavelength, thus allowing structurespecific measurements of CD spectra in unsorted SWCNT samples. Mode (2) will measure full excitation-emission maps with peak signal-to-noise ratios above 100 in less than 2 minutes. All four measurement modes will be performed under computer control. The combined results will offer powerful analyses of complex nanoparticle samples and their coatings, guiding production, processing, and application development.

* Information listed above is at the time of submission. *

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