الفهرس 
Aim of the WorkOnly 14 pages are availabe for public view
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Abstract
New non-toxic pure lanthanide based nanomaterials
and transition metal nanocomplexes as well as dispersed into
silica matrix were prepared for latent fingerprint detection
and biomedical applications, respectively. The prepared
nanomaterials were characterized using several advanced
techniques.
The lanthanide based materials consist of pure x mol%
Eu3+/Y2Ti2O7 and dispersed into silica matrix, where x = 1, 2,
4, 6, 10, 15 and 30. The pure Eu3+/Y2Ti2O7 and dispersed into
silica materials have nanocrystalline structures with spherical
shapes. The pure Eu3+/Y2Ti2O7 with different doping
concentrations was characterized with faint orange red
emission colour. Otherwise, Eu3+/Y2Ti2O7 dispersed into
silica matrix powders give an intense pure red emission. The
photoluminescence (PL) lifetime measurements showed that
the Eu3+/Y2Ti2O7 dispersed into silica matrix was
characterized with constant and high PL lifetime even at high
doping concentrations in comparison with the pure samples.
Judd–Ofelt calculations confirmed the experimental results.
The obtained pure and dispersed into silica samples have
very low toxicity. The prepared nanophosphor dispersed into
silica matrix was successfully developing the latent fingerprint from various forensic relevant materials,
including non-porous, semi-porous and porous surfaces.
Also, chromone Schiff base complexes of Cu(II),
Ni(II), Co(II), Fe(III), Zn(II), Cd(II) and UO2(VI) as well as
Zn(II) complex-silica xerogel nanohybrid were successfully
prepared in nano domain with crystalline or amorphous
structures. The spectroscopic data revealed that the Schiff
base ligand behaves as a monobasic tridentate ligand. The
coordination sites with the metal ions are the γ-pyrone
oxygen, azomethine nitrogen and oxygen of the carboxylic
group. The metal complexes exhibited octahedral geometry
except Cu(II) complex which has a square planar geometry
and UO2 complex in which uranium ion is hepta-coordinated.
Transmission electron microscope (TEM) analysis showed
that Ni(II) and Zn(II) complexes have aggregated spheres
and rod morphologies, respectively. TEM images of Zn(II)
complex-silica xerogel nanohybrid showed a nanosheet
morphology with 46 nm average size and confirmed that the
complex was uniformly distributed into the silica pores. The
obtained nanocomplexes were tested as antimicrobial and
antitumor agents. The results showed that Zn(II)
nanocomplex and Zn(II) complex-silica xerogel nanohybrid
have high activity. The toxicity test on mice showed that Zn(II) complex and Zn(II) complex-silica xerogel
nanohybrid have lower toxicity than cisplatin.
Finally, the obtained results showed that the prepared
nanomaterials have great potential applications in the fields
of forensic and medical sciences.