BioGraphene Gr-SA

High concentration dispersion of graphene nanoplatelets stabilized in a bovine serum albumin (SA) solution for use in biological applications.


  • Produced without chemical treatment or post modification
  • Nanoplatelets are about 5-6 layers, 0.5 µm sized sheets
  • Little or no oxidative defects as seen using Raman spectroscopy

From the laboratory of C. Vijaya Kumar, PhD, University of Connecticut.

Catalog Number Product Size AVAILABILITY Price Qty
BioGraphene Gr-SA, 50mL (5 mg/mL)
50mL (5 mg/mL) In stock
Price: $130.00
Product Type: Small Molecule
Internal Contents: Protein, carbon
Functionalization: surface protein amine and carboxyl groups
Particle Morphology: Thin sheets
Format: aqueous solution
Concentration: 5mg/mL
Size Distribution: ±0.2um
Mean Diameter: 0.5um
Nanoparticle Consistency: Uniform
Comments: Refractive index = 1.35
Storage: -20C; stir before use
Shipped: Cold packs

Raman Spectroscopy and Stability Analyses

(Left) Raman spectrum of biographene (purple line) is compared with graphite (black) shows increase in intensity of D band (~1350 cm-1), D' band (~1625 cm-1), and increase in 2D-30 cm-1 shoulder intensity, characteristic of 4-6 layer graphene. (Right) Stability of washed Graphene-SA (most of the protein is removed) as well as unwashed Graphene-SA, at 4˚C. The washed graphene-SA sample is stable for more than 30 days at 4˚C and the half-life is estimated to be about 115 days at 4 ˚C. Commercial sample is the washed sample.

Transmission Electron Microscopy Images of Graphene-SA Sheets

(Left) Shows a jagged few-layered sheet, about 0.6 µm in length. (Right) The sheet appears folded on itself and is transparent, indicating very few layers.

Conductivity Measurements

(A) Representative SEM images of the graphene-SA-coated paper confirming the presence of bound graphene. (B) Conductivity of the paper is illustrated by using the paper in an LED circuit. (C) Conductivity of the graphene-SA-paper was measured using a 4 probe system and a steady current was observed from 0 V to 40 V. Conductivity was calculated to be 32,000 S/m.

From the laboratory of C. Vijaya Kumar, PhD, University of Connecticut.

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