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Zeitschrift für Physikalische Chemie

International journal of research in physical chemistry and chemical physics

Ed. by Rademann, Klaus

12 Issues per year


IMPACT FACTOR 2016: 1.012

CiteScore 2016: 0.99

SCImago Journal Rank (SJR) 2016: 0.463
Source Normalized Impact per Paper (SNIP) 2016: 0.470

Online
ISSN
2196-7156
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Volume 229, Issue 1-2 (Feb 2015)

Issues

Inorganic Surface Ligands for Colloidal Nanomaterials

Angshuman Nag
  • Department of Chemistry and James Franck Institute, University of Chicago, Chicago, IL 60637, USA
  • Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, 411008, India
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/ Hao Zhang
  • Department of Chemistry and James Franck Institute, University of Chicago, Chicago, IL 60637, USA
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/ Eric Janke
  • Department of Chemistry and James Franck Institute, University of Chicago, Chicago, IL 60637, USA
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/ Dmitri V. Talapin
  • Corresponding author
  • Department of Chemistry and James Franck Institute, University of Chicago, Chicago, IL 60637, USA
  • Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL 60439, USA
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Published Online: 2014-12-16 | DOI: https://doi.org/10.1515/zpch-2014-0604

Abstract

Since the discovery of metal chalcogenide complexes (MCCs) as capping ligands for colloidal nanocrystals (NCs) in 2009, the chemistry of inorganic ligands for NCs has provided a new paradigm for surface design of nanomaterials. Various inorganic anions including MCCs, metal-free chalcogenides, oxoanions/oxometallates, and halides/pseudohalides/halometallates have been employed to replace the original long-chain organic ligands on NCs. This ligand exchange can also be achieved through a two-step route using ligands stripping agents like HBF4. This review outlines recent advances in inorganically-capped colloidal NCs and details the ligand exchange process for NCs using MCCs and metal-free chalcogenides. The binding affinities of ligands to NC surface have been rationalized in terms of Pearson's hard and soft acids and bases (HSAB) principle. We also demonstrate that inorganic ligands broaden the functionality of NCs by tailoring their electro-optical properties or generating new inorganic phases through chemical reactions between nanomaterials and their surface ligands. Especially promising are the electronic, optoelectronic, and thermoelectric applications of solution-processed, inorganically-capped colloidal NCs, which substantially outperform their organically-capped couterparts.

Keywords: Inorganic Ligands; Nanocrystals; Surface Chemistry; Semiconductors; Electron Transport

About the article

Accepted: 2014-10-23

Received: 2014-09-03

Published Online: 2014-12-16

Published in Print: 2015-02-28


Citation Information: Zeitschrift für Physikalische Chemie, ISSN (Online) 2196-7156, ISSN (Print) 0942-9352, DOI: https://doi.org/10.1515/zpch-2014-0604.

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©2014 Walter de Gruyter Berlin/Boston. Copyright Clearance Center

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