Journal
COORDINATION CHEMISTRY REVIEWS
Volume 263, Issue -, Pages 182-196Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ccr.2013.09.001
Keywords
Bottom-up nanofabrication; Molecular programming; Chemical reactivity; Photodeposition; Photocatalysis; Surface functionalization; Quantum dot valence
Categories
Funding
- Iowa State University
- IPRT
- Plant Sciences Institute
- Ames Lab Royalty Account
- National Science Foundation Division of Materials Research [1309510]
- U.S. Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences through the Ames Laboratory
- Iowa State University (ISU) [DEACO2-07CH11358]
- National Science Foundation Division of Chemistry [1253058]
- G. W. Carver
- GMAP fellowships
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1253058] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1309510] Funding Source: National Science Foundation
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The optoelectronic and chemical properties of semiconductor nanocrystals heavily depend on their composition, size, shape and internal structure, surface functionality, etc. Available strategies to alter these properties through traditional colloidal syntheses and ligand exchange methods place a premium on specific reaction conditions and surfactant combinations. In this invited review, we apply a molecular-level understanding of chemical precursor reactivity to reliably control the morphology, composition and intimate architecture (core/shell vs. alloyed) of semiconductor nanocrystals. We also describe our work aimed at achieving highly selective, low-temperature photochemical methods for the synthesis of semiconductor-metal and semiconductor-metal oxide photocatalytic nanocomposites. In addition, we describe our work on surface modification of semiconductor nanocrystal quantum dots using new approaches and methods that bypass ligand exchange, retaining the nanocrystal's native ligands and original optical properties, as well as on spectroscopic methods of characterization useful in determining surface ligand organization and chemistry. Using recent examples from our group and collaborators, we demonstrate how these efforts have lead to faster, wider and more systematic application of semiconductor nanocrystal-based materials to biological imaging and tracking, and to photocatalysis of unconventional substrates. We believe techniques and methods borrowed from inorganic chemistry (including coordination, organometallic and solid state chemistry) have much to offer in reaching a better understanding of the synthesis, functionalization and real-life application of such exciting materials as semiconductor nanocrystals (quantum-dots, rods, tetrapods, etc). (C) 2013 Elsevier B.V. All rights reserved.
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