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Understanding and improving peptide ...

Xie, Hui.

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Understanding and improving peptide non-covalent solubilization of single-walled carbon nanotubes.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Understanding and improving peptide non-covalent solubilization of single-walled carbon nanotubes./
作者:	Xie, Hui.
面頁冊數:	205 p.
附註:	Source: Dissertation Abstracts International, Volume: 66-05, Section: B, page: 2606.
Contained By:	Dissertation Abstracts International66-05B.
標題:	Chemistry, Physical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3176117
ISBN:	054214705X

Understanding and improving peptide non-covalent solubilization of single-walled carbon nanotubes.
Xie, Hui.

Understanding and improving peptide non-covalent solubilization of single-walled carbon nanotubes. - 205 p.

Source: Dissertation Abstracts International, Volume: 66-05, Section: B, page: 2606.

Thesis (Ph.D.)--The University of Texas at Dallas, 2005.

Carbon nanotubes have properties potentially useful in diverse electrical and mechanical nanoscale devices and for making strong, light materials. However, carbon nanotubes are difficult to solubilize and organize into architectures necessary for many applications.

ISBN: 054214705XSubjects--Topical Terms:

560527
Chemistry, Physical.

Understanding and improving peptide non-covalent solubilization of single-walled carbon nanotubes.
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245 1 0 $a Understanding and improving peptide non-covalent solubilization of single-walled carbon nanotubes.
300 $a 205 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-05, Section: B, page: 2606.
500 $a Supervisor: Ray H. Baughman.
502 $a Thesis (Ph.D.)--The University of Texas at Dallas, 2005.
520 $a Carbon nanotubes have properties potentially useful in diverse electrical and mechanical nanoscale devices and for making strong, light materials. However, carbon nanotubes are difficult to solubilize and organize into architectures necessary for many applications.
520 $a The amphiphilic alpha-helix is a protein secondary structure containing hydrophobic and hydrophilic surfaces. These surfactant-like properties allow amphiphilic helices to self-assemble in aqueous solution burying hydrophobic surface and exposing the hydrophilic surface to the aqueous solution.
520 $a The designed amphiphilic alpha-helix nano-1 can non-covalently attach to the surface of single-walled carbon nanotubes (SWNTs) and increase the solubility of SWNTs in aqueous solution. There are two ways to improve the efficiency of nano-1 solubilization of SWNTs. The first is an inter-molecular modification and the second method involves an intra-molecular modification.
520 $a For the first method, we used 1-ethyl-3-[3-dimethlaminopropyl]carbodiimide hydrochloride to cross-link nano-1 molecules around SWNTs. Experiments show that cross-linked nano-1/SWNT dispersions maintain more SWNTs in solution over non cross-linked solutions, and the cross-linked nano-1/SWNTs also exhibit a tendency to self-assemble into extended fiber-like structures.
520 $a For the second method, we used methanol to increase the helicity of nano-1 molecules. Experiments indicate that a tremendous increase in SWNT concentration was observed with increasing nano-1 helicity.
520 $a In this study, we have also designed a series of surfactant peptides which have 8 residues sequences to test the affinity of different amino acids for SWNTs. The experiments were conducted under the conditions that minimize peptide/peptide interactions. Raman spectroscopy and optical spectroscopy were used to study the peptide/SWNT dispersions and peptide/SWNT interactions are discussed.
590 $a School code: 0382.
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710 2 0 $a The University of Texas at Dallas. $3 1018411
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791 $a Ph.D.
792 $a 2005
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