Study of molecular surface coating on the stability of maghemite nanoparticles

Magnetic relaxation and correlating effective magnetic moment with particle size distribution in maghemite nanoparticles

“…with D o = median particle diameter and λ D = width of the distribution with average particle diameter 〈 〉= o e p(λ 2 2) and the standard deviation σ=〈 〉[e p(λ 2 ) -1] [28,29]. In the NP spectrum, the peak near 1710 cm -1 due to the carbonyl stretching mode (C=O) in oleic acid is also present, albeit quite weak, indicating that some of the oleic acid is not bound covalently to the NPs but may be attached via hydrogen bonds [28,29].…”

“…In the NP spectrum, the peak near 1710 cm -1 due to the carbonyl stretching mode (C=O) in oleic acid is also present, albeit quite weak, indicating that some of the oleic acid is not bound covalently to the NPs but may be attached via hydrogen bonds [28,29].…”

Experimental and Theoretical Study of Low-Dimensional Iron Oxide Nanostructures

“…The use of surfactant molecules, such as oleic acid, oleylamine, or thiols , can easily functionalize iron oxide nanoparticles to be hydrophobic surfaces. These molecules can covalently bond to the iron atoms or clusters against particle degradation (Soler et al, 2007).…”

Photoacoustic spectroscopy as a key technique in the investigation of nanosized magnetic particles for drug delivery systems

“…For instance, the widely used static magnetic birefringence is an exceptional technique in the investigation of MFs, once it provides information regarding the degree of nanoparticle agglomeration [17][18][19][20]. Also, Mössbauer [26][27][28][29][30][31][32] and Raman [21][22][23] spectroscopies, combined or not, have been extremely useful in probing cubic ferrite-based nanoparticles in regard to their size, chemical stability, surface characteristics, cation distribution, and phase identification.…”

“…response to DC/AC magnetic fields [13][14][15][16][17][18][19][20], visible/microwave excitation [21][22][23][24][25], and Mössbauer spectroscopy [26][27][28][29][30][31][32]. Applications of the l-MDDS discussed in this paper include cell-labeling [33][34][35], photodynamic therapy (PDT) [36][37][38][39][40][41], and magnetohyperthermia (MHT) of cancer cells and tissues [42][43][44].…”