Optical liquid-crystalline nanocomposites based on cadmium caprylate
with Au, Ag or Cu nanoparticles
Chem.
Met. Alloys 10 (2017)
54-60
https://doi.org/10.30970/cma10.0354
Vitaliy ASAULA, Polina BOROVYK, Galina YAREMCHUK, Tatiana MIRNAYA
The paper presents experimental results on the
synthesis and optical properties of cadmium caprylate
nanocomposites with gold, silver or copper nanoparticles. The metal nanoparticles
were fabricated by reduction of metal ions directly in a cadmium caprylate liquid-crystalline melt, which performed the
function of reductant and stabilizer at the same
time. It was found by optical spectroscopy and transmission electron microscopy
that the metal nanoparticles had spherical shape and
a narrow size distribution range, 15‑30 nm for gold, 14‑20 nm
for silver, and 3‑7 nm for copper.
Dependence of the average size of
the obtained metal nanoparticles on the molar mass of
the metal (Mr)
(dark circles) and the ratio of the mass to the radius of the cation (Mr/r)
(dark squares).
Keywords
Ionic liquid crystals / Nanoparticles
/ Noble metals / Optical properties / Plasmon
resonance