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Ligand Nano-cluster Arrays in a Supported Lipid Bilayer
Published on: April 23, 2017
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Entropic Ligands for Nanocrystals: From Unexpected Solution Properties to Outstanding Processability.
Yu Yang1, Haiyan Qin1, Maowei Jiang1
1Center for Chemistry of Novel & High-Performance Materials, Department of Chemistry, Zhejiang University , Hangzhou, 310027, People's Republic of China.
Nano Letters
|March 1, 2016
Summary
Organic ligands enhance nanocrystal solubility through bond rotation entropy, not steric hindrance. Novel "entropic ligands" significantly boost solubility and performance in nanocrystal devices.
Area of Science:
- Materials Science
- Nanotechnology
- Physical Chemistry
Background:
- Solution processability of nanocrystal-ligand complexes is crucial for applications.
- Ligand coatings influence nanocrystal solubility, a key performance metric.
Purpose of the Study:
- To investigate the role of ligand structure in nanocrystal solubility.
- To develop strategies for enhancing nanocrystal solubility and device performance.
Main Methods:
- Modeling the entropic contribution of ligand C-C sigma bonds to solubility.
- Synthesizing and testing "entropic ligands" with various nanocrystals.
- Evaluating the solubility enhancement and device performance improvements.
Main Results:
- Ligand rotation/bending entropy, not steric effects, exponentially enhances nanocrystal solubility.
- Alkanoate ligand chain length significantly impacts CdSe nanocrystal solubility.
- Introduced "entropic ligands" increased solubility of diverse nanocrystals by factors of 10^2–10^6.
Conclusions:
- Ligand entropy is a dominant factor in nanocrystal solubility.
- "Entropic ligands" offer a powerful route to improve solubility and performance of nanocrystal-based electronics and optoelectronics.
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