Table 1

Parameters of ZnS QDs capped by chitosan as a function of pH during the synthesis
Sample pH λexc (nm) EQD (eV) Blue shift (eV) Size, 2r (nm)
Bulka= 3.61
QD_ZnS_4 4.0 ± 0.1 318 ± 2 3.74 ± 0.02 0.13 ± 0.02 4.7 ± 0.1
QD_ZnS_5 5.0 ± 0.1 312 ± 2 3.79 ± 0.02 0.18 ± 0.02 4.4 ± 0.1
QD_ZnS_6 6.0 ± 0.1 280 ± 2 3.92 ± 0.02 0.31 ± 0.02 3.8 ± 0.1

aReference bulk value for ZnS (cubic crystalline structure).

Ramanery et al.

Ramanery et al. Nanoscale Research Letters 2013 8:512   doi:10.1186/1556-276X-8-512

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