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Table 1 Precursor molar ratios (silver nitrate/indium chloride/zinc stearate/DDT/sulfur in 1 mL of OLA) and characteristics of Ag–In–Zn–S nanocrystals: before and after ligand exchange for MUA, Cys, and LA. TEM was used for size studies

From: Quantum dots as targeted doxorubicin drug delivery nanosystems in human lung cancer cells

Ligand Ag/In/Zn/SDDT/Ss Ag/In/Zn/S Sizea
(nm)
PLb
(nm)
Q.Y.c
(%)
Initial ligands* 1.0/3.5/8.1/5.8/2.6 1.0/1.5/7.8/17.0 3.2 ± 0.4 543 48.0
MUA 1.0/1.2/5.6/9.4 3.1 ± 0.6 576 25.0
Initial ligands* 1.0/3.5/8.1/5.8/2.6 1.0/1.5/7.8/17.0 3.2 ± 0.4 543 48.0
Cys 1.0/6.8/14.3/154.2 3.1 ± 1.0 524 16.0
Initial ligands* 1.0/3.5/8.1/5.8/2.6 1.0/1.5/7.8/17.0 3.2 ± 0.4 543 48.0
LA 1.0/1.0/8.8/25.1 3.0 ± 0.7 540 28.0
  1. *Stearic acid and 1-aminooctadecane
  2. aAverage diameter of nanocrystals (n = 200) determined by TEM
  3. bPL—maximum of the photoluminescence band
  4. cQ.Y. photoluminescence quantum yield, DDT 1-dodecanethiol, Ss sulfur, MUA 11-mercaptoundecanoic acid, Cys L-cysteine, LA lipoic acid