UV-Absorption Observation of the Silver Bromide Growth from a Single Molecule to the Crystal in Solution
Identifieur interne : 001B32 ( Main/Exploration ); précédent : 001B31; suivant : 001B33UV-Absorption Observation of the Silver Bromide Growth from a Single Molecule to the Crystal in Solution
Auteurs : Hongguang Zhang [France] ; Mehran Mostafavi [France]Source :
- The Journal of Physical Chemistry B [ 1520-6106 ] ; 1997.
Abstract
Pulse radiolysis is used to study the formation of the AgBr molecule and the (AgBr)2 dimer in solution. A short time (400 ns) after the nanosecond pulse, the kinetics of AgBr molecule formation is observed at 295 nm. The monomer signal decays to give the dimer (AgBr)2. The dimer spectrum is shifted to the blue and the maximum is at 285 nm. The nanometric (AgBr)n clusters have been synthesized by γ-radiolysis. The final size of the clusters can be controlled by the irradiation dose and dose rate. The direct exciton band of AgBr clusters shifts to the red as their size increases. The splitting energy (which is the difference between the energy of the direct exciton band and the energy of the splitting band) and the intensity ratio of the two bands change with the size of AgBr nanoclusters.
Url:
DOI: 10.1021/jp9712821
Affiliations:
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Crystal in Solution</title><author><name sortKey="Zhang, Hongguang" sort="Zhang, Hongguang" uniqKey="Zhang H" first="Hongguang" last="Zhang">Hongguang Zhang</name><affiliation wicri:level="4"><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire de Physico-Chimie des Rayonnements, CNRS (URA75), Université Paris-Sud, Bâtiment 350,91405 Orsay Cedex</wicri:regionArea><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Orsay</settlement></placeName><orgName type="university">Université Paris-Sud</orgName></affiliation></author><author><name sortKey="Mostafavi, Mehran" sort="Mostafavi, Mehran" uniqKey="Mostafavi M" first="Mehran" last="Mostafavi">Mehran Mostafavi</name><affiliation wicri:level="4"><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire de Physico-Chimie des Rayonnements, CNRS (URA75), Université Paris-Sud, Bâtiment 350,91405 Orsay Cedex</wicri:regionArea><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Orsay</settlement></placeName><orgName type="university">Université Paris-Sud</orgName></affiliation><affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">The Journal of Physical Chemistry B</title><title level="j" type="abbrev">J. Phys. Chem. B</title><idno type="ISSN">1520-6106</idno><idno type="eISSN">1520-5207</idno><imprint><publisher>American Chemical Society</publisher><date type="e-published" when="1997-10-16">1997</date><date when="1997-10-16">1997</date><biblScope unit="vol">101</biblScope><biblScope unit="issue">42</biblScope><biblScope unit="page" from="8443">8443</biblScope><biblScope unit="page" to="8448">8448</biblScope></imprint><idno type="ISSN">1520-6106</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1520-6106</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract">Pulse radiolysis is used to study the formation of the AgBr molecule and the (AgBr)2 dimer in solution. A short time (400 ns) after the nanosecond pulse, the kinetics of AgBr molecule formation is observed at 295 nm. The monomer signal decays to give the dimer (AgBr)2. The dimer spectrum is shifted to the blue and the maximum is at 285 nm. The nanometric (AgBr)n clusters have been synthesized by γ-radiolysis. The final size of the clusters can be controlled by the irradiation dose and dose rate. The direct exciton band of AgBr clusters shifts to the red as their size increases. The splitting energy (which is the difference between the energy of the direct exciton band and the energy of the splitting band) and the intensity ratio of the two bands change with the size of AgBr nanoclusters.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Île-de-France</li></region><settlement><li>Orsay</li></settlement><orgName><li>Université Paris-Sud</li></orgName></list><tree><country name="France"><region name="Île-de-France"><name sortKey="Zhang, Hongguang" sort="Zhang, Hongguang" uniqKey="Zhang H" first="Hongguang" last="Zhang">Hongguang Zhang</name></region><name sortKey="Mostafavi, Mehran" sort="Mostafavi, Mehran" uniqKey="Mostafavi M" first="Mehran" last="Mostafavi">Mehran Mostafavi</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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