東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Interfacial electron transfer of cyt...

Yue, Hongjun.

Linked to FindBook

Google Book

Amazon

博客來

Interfacial electron transfer of cytochrome c and conjugated polyelectrolyte/surfactant complexes.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Interfacial electron transfer of cytochrome c and conjugated polyelectrolyte/surfactant complexes./
Author:	Yue, Hongjun.
Description:	235 p.
Notes:	Source: Dissertation Abstracts International, Volume: 68-09, Section: B, page: 5982.
Contained By:	Dissertation Abstracts International68-09B.
Subject:	Biophysics, General. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3284650
ISBN:	9780549261018

Interfacial electron transfer of cytochrome c and conjugated polyelectrolyte/surfactant complexes.
Yue, Hongjun.

Interfacial electron transfer of cytochrome c and conjugated polyelectrolyte/surfactant complexes. - 235 p.

Source: Dissertation Abstracts International, Volume: 68-09, Section: B, page: 5982.

Thesis (Ph.D.)--University of Pittsburgh, 2007.

Cytochrome c (cyt c) acts as an electron shuttle in biological respiration and photosynthesis. Although the understanding of this protein and its electron transfer (ET) reaction is relatively highly developed, many of its aspects remain unclear. We use supramolecular assemblies of cytochrome c to understand its ET at an interface in terms of how the ET depends on solution composition, SAM composition, temperature, immobilization methods and the nature of the electron tunneling pathway. From these studies we have learned: (1) the formal potential and the surface charge of cytochrome c are modified when binding to a negatively charged surface; (2) cytochrome c molecules assume a wide distribution of geometries when electrostatically binding to a negatively charged surface, which leads to a wide distribution of ET rate constants; (3) when the protein is within 14 A of the electrode, the ET rate is controlled by local frictional motions rather than by electron tunneling; (4) the binding-inactive sites, the diluent molecules on the SAM can provide alternative electron tunneling pathways from electrode surface to the heme of cytochrome c, and in suitable conditions the diluent molecules dominate in the electron tunneling pathway.

ISBN: 9780549261018Subjects--Topical Terms:

1019105
Biophysics, General.

Interfacial electron transfer of cytochrome c and conjugated polyelectrolyte/surfactant complexes.
LDR:03262nam 2200277 a 45 001 957387
005 20110630
008 110630s2007 ||||||||||||||||| ||eng d
020 $a 9780549261018
035 $a (UMI)AAI3284650
035 $a AAI3284650
040 $a UMI $c UMI
100 1 $a Yue, Hongjun. $3 1280740
245 1 0 $a Interfacial electron transfer of cytochrome c and conjugated polyelectrolyte/surfactant complexes.
300 $a 235 p.
500 $a Source: Dissertation Abstracts International, Volume: 68-09, Section: B, page: 5982.
502 $a Thesis (Ph.D.)--University of Pittsburgh, 2007.
520 $a Cytochrome c (cyt c) acts as an electron shuttle in biological respiration and photosynthesis. Although the understanding of this protein and its electron transfer (ET) reaction is relatively highly developed, many of its aspects remain unclear. We use supramolecular assemblies of cytochrome c to understand its ET at an interface in terms of how the ET depends on solution composition, SAM composition, temperature, immobilization methods and the nature of the electron tunneling pathway. From these studies we have learned: (1) the formal potential and the surface charge of cytochrome c are modified when binding to a negatively charged surface; (2) cytochrome c molecules assume a wide distribution of geometries when electrostatically binding to a negatively charged surface, which leads to a wide distribution of ET rate constants; (3) when the protein is within 14 A of the electrode, the ET rate is controlled by local frictional motions rather than by electron tunneling; (4) the binding-inactive sites, the diluent molecules on the SAM can provide alternative electron tunneling pathways from electrode surface to the heme of cytochrome c, and in suitable conditions the diluent molecules dominate in the electron tunneling pathway.
520 $a Poly (phenylethynylene) (PPE) based conjugated polyelectrolytes are a class of polyions having rigid backbones. We present a fluorescence correlation spectroscopy (FCS) study on the hydrodynamic properties of complexes formed by two PPE-SO3- polymers, having different charge density, with octadecyl trimethylammoniumbromide (OTAB) below the critical micelle concentration. The concentration ratio COTAB/Cmonomer ranges from 0.2 to 1800. The hydrodynamic radius of the complexes as a function of OTAB concentration has three regimes. In the low concentration regime, the complex has a comparable size with the polymer in deionized water. In the intermediate concentration regime the complexes have the largest size and substantial heterogeneity. In the high concentration regime, the complexes have a size that is about three times larger than that in the low concentration regime. The results significantly extend the understanding of the interaction between polyelectrolyte and ionic surfactant, and indicate that the rigidity of polymer backbone and COTAB/Cmonomer concentration ratio act to determine the composition of polyelectrolyte/surfactant complexes.
590 $a School code: 0178.
650 4 $a Biophysics, General. $3 1019105
650 4 $a Chemistry, Physical. $3 560527
650 4 $a Chemistry, Polymer. $3 1018428
690 $a 0494
690 $a 0495
690 $a 0786
710 2 $a University of Pittsburgh. $3 958527
773 0 $t Dissertation Abstracts International $g 68-09B.
790 $a 0178
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3284650