Abstract
We report the colloidal synthesis of substrate-free MoSe2 nanostructures with a uniform flower-like morphology and tunable average diameters that range from approximately 50-250 nm. The MoSe2 nanoflowers contain a large population of highly crystalline few-layer nanosheets that protrude from a central core. Aliquot studies and control experiments indicate that the nanoflowers are generated through a two-step process that involves the formation of a core in the early stages of the reaction followed by outward nanosheet growth that can be controlled based on the concentrations of reagents. The effects of laser-induced local heating, bulk-scale heating using a temperature stage, and nanostructuring on the ability to trigger and tune interlayer decoupling were also investigated. Notably, laser-induced local heating results in dynamic and reversible interlayer decoupling. Such capabilities provide a pathway for achieving quasi-two-dimensional behavior in three-dimensionally structured and colloidally synthesized transition metal dichalcogenide nanostructures.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 3167-3175 |
| Number of pages | 9 |
| Journal | Chemistry of Materials |
| Volume | 27 |
| Issue number | 8 |
| DOIs | |
| State | Published - Apr 28 2015 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Chemical Engineering(all)
- Materials Chemistry
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Formation and interlayer decoupling of colloidal MoSe2 nanoflowers. / Sun, Du; Feng, Simin; Terrones Maldonado, Mauricio; Schaak, Raymond Edward.
In: Chemistry of Materials, Vol. 27, No. 8, 28.04.2015, p. 3167-3175.Research output: Contribution to journal › Article
TY - JOUR
T1 - Formation and interlayer decoupling of colloidal MoSe2 nanoflowers
AU - Sun, Du
AU - Feng, Simin
AU - Terrones Maldonado, Mauricio
AU - Schaak, Raymond Edward
PY - 2015/4/28
Y1 - 2015/4/28
N2 - We report the colloidal synthesis of substrate-free MoSe2 nanostructures with a uniform flower-like morphology and tunable average diameters that range from approximately 50-250 nm. The MoSe2 nanoflowers contain a large population of highly crystalline few-layer nanosheets that protrude from a central core. Aliquot studies and control experiments indicate that the nanoflowers are generated through a two-step process that involves the formation of a core in the early stages of the reaction followed by outward nanosheet growth that can be controlled based on the concentrations of reagents. The effects of laser-induced local heating, bulk-scale heating using a temperature stage, and nanostructuring on the ability to trigger and tune interlayer decoupling were also investigated. Notably, laser-induced local heating results in dynamic and reversible interlayer decoupling. Such capabilities provide a pathway for achieving quasi-two-dimensional behavior in three-dimensionally structured and colloidally synthesized transition metal dichalcogenide nanostructures.
AB - We report the colloidal synthesis of substrate-free MoSe2 nanostructures with a uniform flower-like morphology and tunable average diameters that range from approximately 50-250 nm. The MoSe2 nanoflowers contain a large population of highly crystalline few-layer nanosheets that protrude from a central core. Aliquot studies and control experiments indicate that the nanoflowers are generated through a two-step process that involves the formation of a core in the early stages of the reaction followed by outward nanosheet growth that can be controlled based on the concentrations of reagents. The effects of laser-induced local heating, bulk-scale heating using a temperature stage, and nanostructuring on the ability to trigger and tune interlayer decoupling were also investigated. Notably, laser-induced local heating results in dynamic and reversible interlayer decoupling. Such capabilities provide a pathway for achieving quasi-two-dimensional behavior in three-dimensionally structured and colloidally synthesized transition metal dichalcogenide nanostructures.
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U2 - 10.1021/acs.chemmater.5b01129
DO - 10.1021/acs.chemmater.5b01129
M3 - Article
VL - 27
SP - 3167
EP - 3175
JO - Chemistry of Materials
JF - Chemistry of Materials
SN - 0897-4756
IS - 8
ER -