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SOLUTION-PHASE SYNTHESIS OF METAL CHALCOGENIDE NANOCRYSTALS AT LOW TEMPERATURES USING DIALKYL DICHALCOGENIDE PRECURSORS
by
Matthew A. Franzman
________________________________________________________________________
A Dissertation Presented to the
FACULTY OF THE USC GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(CHEMISTRY)
May 2010
Copyright 2010 Matthew A. Franzman
Object Description
| Title | Solution-phase synthesis of metal chalcogenide nanocrystals at low temperatures using dialkyl dichalcogenide precursors |
| Author | Franzman, Matthew A. |
| Author email | franzman@usc.edu; matthewfranzman@yahoo.com |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Chemistry |
| School | College of Letters, Arts and Sciences |
| Date defended/completed | 2009-12-08 |
| Date submitted | 2010 |
| Restricted until | Unrestricted |
| Date published | 2010-01-15 |
| Advisor (committee chair) | Brutchey, Richard L. |
| Advisor (committee member) |
Thompson, Mark E. Malmstadt, Noah |
| Abstract | Solution-phase synthetic reactions have proven to be viable routes toward semiconductor metal chalcogenide nanocrystals; however, these reactions are often reliant upon high temperatures, designer single-source precursors, or environmentally harmful reagents. To overcome these obstacles, a versatile method for the moderately low temperature synthesis of metal chalcogenide nanocrystals using dialkyl dichalcogenides as the chalcogen source has been developed. These precursors decompose in solution to promote the growth of kinetically controlled nanoscale products. Well-defined, 1-D indium sulfide (In2S3) nanorods are synthesized using di-tert-butyl disulfide as the sulfur source at 180 °C. In a similar fashion, monodisperse wurtzite copper indium sulfide (wz-CuInS2) and tin sulfide (SnS) nanocubes can be synthesized by using di-tert-butyl disulfide. This method proves equally effective toward the synthesis of novel nanocrystals of tin selenide (SnSe) using di-tert-butyl diselenide and cubic indium oxide (In2O3) nanocrystals using a family of peroxides. To better understand the role of these dialkyl dichalcogenide precursors, the nanocrystal growth mechanisms have been explored for the dichalcogenide-mediated synthesis of wz-CuInS2 and c-In2O3. |
| Keyword | semiconductor; nanocrystal; nanorods; synthesis; nanocrystal synthesis; nanocrystal growth; growth kinetics; dichalcogenide; peroxide; disulfide; diselenide; green chemistry; inorganic chemistry; indium oxide; In2O3; indium sulfide; In2S3; copper indium sulfide; CuInS2; CIS; tin sulfide; SnS; tin selenide; SnSe; zinc fingers; aurothiomalate; myochrysine; auranofin; gold drugs |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m2797 |
| Rights | Franzman, Matthew A. |
| Repository name | Libraries, University of Southern California |
| Repository address | Los Angeles, California |
| Repository email | http://www.usc.edu/isd/libraries/services/ask_a_librarian/email/ |
| Filename | etd-Franzman-3422 |
| Archival file | uscthesesreloadpub_Volume44/etd-Franzman-3422.pdf |
Description
| Title | Page 1 |
| Full text | SOLUTION-PHASE SYNTHESIS OF METAL CHALCOGENIDE NANOCRYSTALS AT LOW TEMPERATURES USING DIALKYL DICHALCOGENIDE PRECURSORS by Matthew A. Franzman ________________________________________________________________________ A Dissertation Presented to the FACULTY OF THE USC GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (CHEMISTRY) May 2010 Copyright 2010 Matthew A. Franzman |
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