Electrochemical Preparation and EPR Studies of Lithium Phthalocyanine. Part 2:  Particle-Size-Dependent Line Broadening by Molecular Oxygen and Its Implications as an Oximetry Probe

2000 ◽  
Vol 104 (40) ◽  
pp. 9404-9410 ◽  
Author(s):  
Govindasamy Ilangovan ◽  
Jay L. Zweier ◽  
Periannan Kuppusamy
Keyword(s):  
Particle Size ◽  
Molecular Oxygen ◽  
Line Broadening ◽  
Electrochemical Preparation ◽  
Size Dependent ◽  
Oximetry Probe

Solvent-Ligand Interactions in Colloidal Nanocrystals

2018 ◽  
Author(s):  
Jonathan De Roo ◽  
Nuri Yazdani ◽  
Emile Drijvers ◽  
Alessandro Lauria ◽  
Jorick Maes ◽  
...  
Keyword(s):  
Direct Method ◽  
Line Broadening ◽  
H Nmr ◽  
Size Dependent ◽  
Line Shape Analysis ◽  
Wide Range ◽  
Nanocrystal Synthesis ◽  
Ligand Interactions ◽  
Indispensable Tool ◽  
Theoretical Evidence

<p>Although solvent-ligand interactions play a major role in nanocrystal synthesis, dispersion formulation and assembly, there is currently no direct method to study this. Here we examine the broadening of <sup>1</sup>H NMR resonances associated with bound ligands, and turn this poorly understood descriptor into a tool to assess solvent-ligand interactions. We show that the line broadening has both a homogeneous and a heterogeneous component. The former is nanocrystal-size dependent and the latter results from solvent-ligand interactions. Our model is supported by experimental and theoretical evidence that correlates broad NMR lines with poor ligand solvation. This correlation is found across a wide range of solvents, extending from water to hexane, for both hydrophobic and hydrophilic ligand types, and for a multitude of oxide, sulfide and selenide nanocrystals. Our findings thus put forward NMR line shape analysis as an indispensable tool to form, investigate and manipulate nanocolloids.</p>

Up-conversion emission and in vitro cytotoxicity characterization of blue emitting, biocompatible SrTiO3 nanoparticles activated with Tm3+ and Yb3+ ions

RSC Advances ◽  
2016 ◽  
Vol 6 (45) ◽  
pp. 39469-39479 ◽  
Author(s):  
R. Pazik ◽  
A. Zięcina ◽  
B. Poźniak ◽  
M. Malecka ◽  
L. Marciniak ◽  
...  
Keyword(s):  
Particle Size ◽  
Cytotoxic Effect ◽  
In Vitro Cytotoxicity ◽  
Ion Release ◽  
Size Dependent ◽  
U2os Cells

Blue emitting, up-converting NP's of SrTiO3:Tm3+/Yb3+ synthesized using the citric route are biocompatible towards J774.E whereas the cytotoxic effect to U2OS cells is not particle size dependent but most probably is related to Sr2+ ion release.

Particle size dependent hysteresis loss in La0.7Ce0.3Fe11.6Si1.4C0.2 first‐order systems

2012 ◽  
Vol 100 (7) ◽  
pp. 072403 ◽  
Author(s):  
F. X. Hu ◽  
L. Chen ◽  
J. Wang ◽  
L. F. Bao ◽  
J. R. Sun ◽  
...  
Keyword(s):  
Particle Size ◽  
Hysteresis Loss ◽  
First Order ◽  
Size Dependent

Size-dependent solution-mediated phase transformation of piroxicam monohydrate particles

CrystEngComm ◽  
2021 ◽  
Vol 23 (16) ◽  
pp. 2928-2932
Author(s):  
Changlin Yao ◽  
Lei Wang ◽  
Xinyuan Wang ◽  
Xutang Tao
Keyword(s):  
Particle Size ◽  
Phase Transformation ◽  
Size Dependent

The transformation from the piroxicam monohydrate to form I or form II could be achieved precisely by adjusting the particle size itself in the 99% acetone-1% H2O solvent at 31 °C.

Spatial, seasonal and particle size dependent variations of PAH contamination in indoor dust and the corresponding human health risk

2019 ◽  
Vol 653 ◽  
pp. 423-430 ◽  
Author(s):  
Zhiguo Cao ◽  
Mengmeng Wang ◽  
Qiaoying Chen ◽  
Chunyou Zhu ◽  
Janye Jie ◽  
...  
Keyword(s):  
Particle Size ◽  
Health Risk ◽  
Human Health ◽  
Human Health Risk ◽  
Indoor Dust ◽  
Size Dependent

scholarly journals Speciation and pH- and particle size-dependent solubility of phosphorus in tropical sandy soils

Geoderma ◽  
2022 ◽  
Vol 408 ◽  
pp. 115590
Author(s):  
Apinya Saentho ◽  
Worachart Wisawapipat ◽  
Phrueksa Lawongsa ◽  
Surachet Aramrak ◽  
Nattaporn Prakongkep ◽  
...  
Keyword(s):  
Particle Size ◽  
Sandy Soils ◽  
Size Dependent

scholarly journals Particle size dependent sinterability and magnetic properties of recycled HDDR Nd–Fe–B powders consolidated with spark plasma sintering

2020 ◽  
Vol 38 (1) ◽  
pp. 90-99 ◽  
Author(s):  
Awais Ikram ◽  
Farhan Mehmood ◽  
Richard Stuart Sheridan ◽  
Muhammad Awais ◽  
Allan Walton ◽  
...  
Keyword(s):  
Particle Size ◽  
Magnetic Properties ◽  
Spark Plasma Sintering ◽  
Size Dependent ◽  
Plasma Sintering ◽  
Spark Plasma
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