Skip to main content

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