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One-step colloidal synthesis of biocompatible water-soluble ZnS quantum dot/chitosan nanoconjugates

Fábio P Ramanery, Alexandra AP Mansur and Herman S Mansur*

Author Affiliations

Center of Nanoscience, Nanotechnology and Innovation - CeNano2I, Department of Metallurgical and Materials Engineering, Escola de Engenharia, Federal University of Minas Gerais, Bloco 2, Sala 2233, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais 31270-901, Brazil

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Nanoscale Research Letters 2013, 8:512  doi:10.1186/1556-276X-8-512

Published: 5 December 2013

Additional files

Additional file 1: Figure S1:

Infrared spectra of chitosan (pH = 4.0). Inset: vibrational region: 1,750 to 1,400 cm-1.

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Additional file 2: Figure S2:

FTIR spectra of CHI (a) and CHI-ZnS (b) at pH = 5.0 ± 0.2. Vibrational regions: 1,750 to 1,475 cm-1 (left) and 1,250 to 950 cm-1 (right).

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Additional file 3: Figure S3:

FTIR spectra of CHI (a) and CHI-ZnS (b) in the range of 3,700 to 3,050 cm-1 at pH 6.0 ± 0.2 (A), pH = 5.0 ± 0.2 (B) and pH = 4.0 ± 0.2 (C).

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Additional file 4: Figure S4:

Potentiometric titration curve of 75 mg of chitosan dissolved in 0.1 mol.L-1 HCl solution (a) and its derivative (b).

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