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Inertial Force-Driven Synthesis of N...

Batta-Mpouma, Joseph Noel.

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Inertial Force-Driven Synthesis of Near-Infrared Plasmonic Nanosphere Composites: Physicochemical Characterizations.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Inertial Force-Driven Synthesis of Near-Infrared Plasmonic Nanosphere Composites: Physicochemical Characterizations./
Author:	Batta-Mpouma, Joseph Noel.
Description:	92 p.
Notes:	Source: Masters Abstracts International, Volume: 54-04.
Contained By:	Masters Abstracts International54-04(E).
Subject:	Physical chemistry. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1587219
ISBN:	9781321708349

Inertial Force-Driven Synthesis of Near-Infrared Plasmonic Nanosphere Composites: Physicochemical Characterizations.
Batta-Mpouma, Joseph Noel.

Inertial Force-Driven Synthesis of Near-Infrared Plasmonic Nanosphere Composites: Physicochemical Characterizations. - 92 p.

Source: Masters Abstracts International, Volume: 54-04.

Thesis (M.S.B.E.)--University of Arkansas, 2015.

Near-infrared (NIR) responsive nanoparticles (NPs) like gold nanorods (GNRs) are important in biomedical fields because of their transparency for biological tissues. Although GNRs are sought after as contrast agents for theranostics in cancer studies, capping ligands like cetyltrimethylammonium bromide (CTAB) for the GNR synthesis are toxic for biological tissues. The need for an alternative to toxic GNRs is of interest to alleviate the problem.

ISBN: 9781321708349Subjects--Topical Terms:

1981412
Physical chemistry.

Inertial Force-Driven Synthesis of Near-Infrared Plasmonic Nanosphere Composites: Physicochemical Characterizations.
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100 1 $a Batta-Mpouma, Joseph Noel. $3 3181550
245 1 0 $a Inertial Force-Driven Synthesis of Near-Infrared Plasmonic Nanosphere Composites: Physicochemical Characterizations.
300 $a 92 p.
500 $a Source: Masters Abstracts International, Volume: 54-04.
500 $a Adviser: Jin-Woo Kim.
502 $a Thesis (M.S.B.E.)--University of Arkansas, 2015.
520 $a Near-infrared (NIR) responsive nanoparticles (NPs) like gold nanorods (GNRs) are important in biomedical fields because of their transparency for biological tissues. Although GNRs are sought after as contrast agents for theranostics in cancer studies, capping ligands like cetyltrimethylammonium bromide (CTAB) for the GNR synthesis are toxic for biological tissues. The need for an alternative to toxic GNRs is of interest to alleviate the problem.
520 $a This work aimed to optimize the synthesis of NIR responsive nanosphere composites (NSCs) by inertial force (g-force) using colloidal gold NPs as model, elucidate the mechanism for the NSC formation, and study their detailed physicochemical characteristics. The inertial force-driven synthesis of NSCs resulted in NP composites of two NPs combined together with little or no gaps between them. The synthesis process was simple and cost-effective, and did not require the use of a toxic chemical like CTAB. The formed NSCs showed rod-like characteristics, which are typified by the evolution of absorption spectra from the transverse to longitudinal mode.
520 $a Factors, such as NP sizes, g-force, capping ligand, and electrostatic force, were found to influence NSC formation. Variations of g-forces showed that there was a critical g-force to form NSCs at fixed centrifugation duration and those critical g-force values were inversely proportional to centrifugation duration. This implied that both g-forces and the duration of NPs' exposure to g-forces should be considered to investigate optimal reaction conditions for maximal NSC yields and detailed mechanisms of their formation. When three combinations of gold NPs with different sizes were used, NSCs with NPs of two different sizes (hetero-dimers) were formed and their NIR plasmonic responses shifted further to the right compared to those of homo-dimers, demonstrating high promise of tuning NIR plasmonic responses of NSCs. Evaluating capping ligands of NPs with different charge characteristics, only absorbance spectra of NPs with charged ligands evolved from the transverse to longitudinal mode, confirming that NP surface charge characteristics played important roles in the NSC formation. Although more works remain and challenges ahead, these new nanomaterials by the inertial force-driven technique showed high potential to be an effective alternative to many existing nanoparticles, particularly GNRs.
590 $a School code: 0011.
650 4 $a Physical chemistry. $3 1981412
650 4 $a Nanoscience. $3 587832
690 $a 0494
690 $a 0565
710 2 $a University of Arkansas. $b Biomedical Engineering. $3 3181551
773 0 $t Masters Abstracts International $g 54-04(E).
790 $a 0011
791 $a M.S.B.E.
792 $a 2015
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1587219