DataVXChemistry of MaterialsPaper
journal article·2018-11-13Open access

Synthesis of Phosphonic Acid Ligands for Nanocrystal Surface Functionalization and Solution Processed Memristors

Jonathan De Roo, Zimu Zhou, Jiaying Wang, Loren Deblock, Alfred J. Crosby, Jonathan S. Owen, Stephen S. Nonnenmann

Chemistry of Materials· Volume 30· Issue 21
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Source abstract

Abstract

Here, we synthesized 2-ethylhexyl, 2-hexyldecyl, 2-[2-(2-methoxyethoxy)ethoxy]ethyl, oleyl, and n-octadecyl phosphonic acid and used them to functionalize CdSe and HfO2 nanocrystals. In contrast to branched carboxylic acids, postsynthetic surface functionalization of CdSe and HfO2 nanocrystals was readily achieved with branched phosphonic acids. Phosphonic acid capped HfO2 nanocrystals were subsequently evaluated as memristors using conductive atomic force microscopy. We found that 2-ethylhexyl phosphonic acid is a superior ligand, combining a high colloidal stability with a compact ligand shell that results in a record-low operating voltage that is promising for application in flexible electronics.
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Research context

Nanomaterials

OpenAlex topics: Advanced Memory and Neural Computing · Quantum Dots Synthesis And Properties · Advanced biosensing and bioanalysis techniques

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemistry, Ghent University, Gent B-9000, Belgium

Department of Chemistry, Columbia University, New York, New York 10027, United States

Department of Mechanical and Industrial Engineering, University of Massachusetts—Amherst, Amherst, Massachusetts 01003, United States

Polymer Science and Engineering Department, University of Massachusetts—Amherst, Amherst, Massachusetts 01003, United States

Funding

Fulbright Association · Army Research Office · Belgian American Educational Foundation · Universiteit Gent · H2020 Marie Sklodowska-Curie Actions · Division of Civil, Mechanical and Manufacturing Innovation · Center for Hierarchical Manufacturing, National Science Foundation · Army Research Laboratory · University of Massachusetts Amherst · National Science Foundation

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