- Home
- Search Results
- Page 1 of 1
Search for: All records
-
Total Resources1
- Resource Type
-
00010
- Availability
-
10
- Author / Contributor
- Filter by Author / Creator
-
-
Bredar, Alexandria R. (1)
-
Chakraborty, Nilave (1)
-
Farnum, Byron H. (1)
-
Gibson, Noah J. (1)
-
#Tyler Phillips, Kenneth E. (0)
-
#Willis, Ciara (0)
-
& Abreu-Ramos, E. D. (0)
-
& Abramson, C. I. (0)
-
& Abreu-Ramos, E. D. (0)
-
& Adams, S.G. (0)
-
& Ahmed, K. (0)
-
& Ahmed, Khadija. (0)
-
& Akcil-Okan, O. (0)
-
& Akuom, D. (0)
-
& Aleven, V. (0)
-
& Andrews-Larson, C. (0)
-
& Archibald, J. (0)
-
& Arnett, N. (0)
-
& Arya, G. (0)
-
& Attari, S. Z. (0)
-
- Filter by Editor
-
-
null (1)
-
& Spizer, S. M. (0)
-
& . Spizer, S. (0)
-
& Ahn, J. (0)
-
& Bateiha, S. (0)
-
& Bosch, N. (0)
-
& Brennan K. (0)
-
& Brennan, K. (0)
-
& Chen, B. (0)
-
& Chen, Bodong (0)
-
& Drown, S. (0)
-
& Ferretti, F. (0)
-
& Higgins, A. (0)
-
& J. Peters (0)
-
& Kali, Y. (0)
-
& Ruiz-Arias, P.M. (0)
-
& S. Spitzer (0)
-
& Spitzer, S. (0)
-
& Spitzer, S.M. (0)
-
(submitted - in Review for IEEE ICASSP-2024) (0)
-
-
Have feedback or suggestions for a way to improve these results?
!
Note: When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher.
Some full text articles may not yet be available without a charge during the embargo (administrative interval).
What is a DOI Number?
Some links on this page may take you to non-federal websites. Their policies may differ from this site.
-
null (Ed.)A new transmetallation approach is described for the synthesis of metal oxide nanocrystals (NCs). Typically, the synthesis of metal oxide NCs in oleyl alcohol is driven by metal-based esterification catalysis with oleic acid to produce oleyl oleate ester and M-OH monomers, which then condense to form M x O y solids. Here we show that the synthesis of Cu 2 O NCs by this method is limited by the catalytic ability of copper to drive esterification and thus produce Cu + -OH monomers. However, inclusion of 1–15 mol% of a group 13 cation (Al 3+ , Ga 3+ , or In 3+ ) results in efficient synthesis of Cu 2 O NCs and exhibits size/morphology control based on the nature of M 3+ . Using a continuous-injection procedure where the copper precursor (Cu 2+ -oleate) and catalyst (M 3+ -oleate) are injected into oleyl alcohol at a controlled rate, we are able to monitor the reactivity of the precursor and M 3+ catalyst using UV-visible and FTIR absorbance spectroscopies. These time-dependent measurements clearly show that M 3+ catalysts drive esterification to produce M 3+ -OH species, which then undergo transmetallation of hydroxide ligands to generate Cu + -OH monomers required for Cu 2 O condensation. Ga 3+ is found to be the “goldilocks” catalyst, producing NCs with the smallest size and a distinct cubic morphology not observed for any other group 13 metal. This is believed to be due to rapid transmetallation kinetics between Ga 3+ -OH and Cu + -oleate. These studies introduce a new mechanism for the synthesis of metal oxides where inherent catalysis by the parent metal ( i.e. copper) can be circumvented with the use of a secondary catalyst to generate hydroxide ligands.more » « less