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Photodynamics on thin silver films.

Jacobson, Michele L.

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Photodynamics on thin silver films.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Photodynamics on thin silver films./
Author:	Jacobson, Michele L.
Description:	150 p.
Notes:	Director: Kathy L. Rowlen.
Contained By:	Dissertation Abstracts International66-11B.
Subject:	Chemistry, Analytical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3196481
ISBN:	9780542423482

Photodynamics on thin silver films.
Jacobson, Michele L.

Photodynamics on thin silver films. - 150 p.

Director: Kathy L. Rowlen.

Thesis (Ph.D.)--University of Colorado at Boulder, 2005.

Surface enhanced Raman spectroscopy (SERS) has been widely demonstrated to be capable of single molecule detection. In addition to enhancement of Raman scattering, the substrates used for SERS also display other unique optical properties such as photoluminescence and blinking. In this work, the photoactivation of Ag thin metal films as it relates to the mechanism of SERS enhancement and the production of Ag cluster SERS active sites was explored. Specifically, the photodynamics of SERS-active thin Ag films were quantitatively studied using a combination of optical imaging, high and low resolution spectroscopy, and atomic force microscopy. A key hypothesis tested in this work addressed the role of oxygen in TMF photodynamics. Based on spectroscopic and kinetic differences observed from thin Ag films under both ambient and nitrogen atmospheres, a simple photochemical mechanism for blinking in optical phenomena was developed and tested. The proposed mechanism relies on the photoreduction of silver oxide to produce an active species, which was postulated to be silver clusters. Additional spectroscopic, including two-dimensional correlation, and morphological analysis provided the basis for a more complete mechanistic description of the complex interaction between the substrate, light and adsorbed species.

ISBN: 9780542423482Subjects--Topical Terms:

586156
Chemistry, Analytical.

Photodynamics on thin silver films.
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005 20110524
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020 $a 9780542423482
035 $a (UMI)AAI3196481
035 $a AAI3196481
040 $a UMI $c UMI
100 1 $a Jacobson, Michele L. $3 1271355
245 1 0 $a Photodynamics on thin silver films.
300 $a 150 p.
500 $a Director: Kathy L. Rowlen.
500 $a Source: Dissertation Abstracts International, Volume: 66-11, Section: B, page: 5947.
502 $a Thesis (Ph.D.)--University of Colorado at Boulder, 2005.
520 $a Surface enhanced Raman spectroscopy (SERS) has been widely demonstrated to be capable of single molecule detection. In addition to enhancement of Raman scattering, the substrates used for SERS also display other unique optical properties such as photoluminescence and blinking. In this work, the photoactivation of Ag thin metal films as it relates to the mechanism of SERS enhancement and the production of Ag cluster SERS active sites was explored. Specifically, the photodynamics of SERS-active thin Ag films were quantitatively studied using a combination of optical imaging, high and low resolution spectroscopy, and atomic force microscopy. A key hypothesis tested in this work addressed the role of oxygen in TMF photodynamics. Based on spectroscopic and kinetic differences observed from thin Ag films under both ambient and nitrogen atmospheres, a simple photochemical mechanism for blinking in optical phenomena was developed and tested. The proposed mechanism relies on the photoreduction of silver oxide to produce an active species, which was postulated to be silver clusters. Additional spectroscopic, including two-dimensional correlation, and morphological analysis provided the basis for a more complete mechanistic description of the complex interaction between the substrate, light and adsorbed species.
590 $a School code: 0051.
650 4 $a Chemistry, Analytical. $3 586156
690 $a 0486
710 2 $a University of Colorado at Boulder. $3 1019435
773 0 $t Dissertation Abstracts International $g 66-11B.
790 $a 0051
790 1 0 $a Rowlen, Kathy L., $e advisor
791 $a Ph.D.
792 $a 2005
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3196481