Quantum dots are nano-sized particles of semiconducting material, typically chalcogenides or phosphides of metals found across groups II to VI of the periodic table. Their small size causes them to exhibit unique optical and electrical properties which are now finding applications in electronics, optics and in the biological sciences.
Synthesis of these materials began in the late 1980's and this book gives a thorough background to the topic, referencing these early discoveries. Any rapidly-expanding field will contain vast amounts of publications, and this book presents a complete overview of the field, bringing together the most relevant and seminal aspects literature in an informed and succinct manner.
The author has been an active participant in the field since its infancy in the mid 1990's, and presents a unique handbook to the synthesis and application of this unique class of materials. Drawing on both his own experience and referencing the primary literature, Mark Green has prepared. Postgraduates and experienced researchers will benefit from the comprehensive nature of the book, as will manufacturers of quantum dots and those wishing to apply them.
Rezensionen / Stimmen
The fi eld of nanotechnology is growing.
The tunability of nano-objects such as
semiconductor quantum dots (SQDs) has
spurred interest in chemical synthesis. In
this regard, this book's arrival is timely. It
groups the various synthesis techniques for
popular SQDs, comprised of 295 pages
distributed among seven chapters and a
comprehensive subject index. Preparation
methods for II-VI, II-V, and IV-VI SQDs
are described in the fi rst three chapters. The
fi rst chapter introduces and develops various
organometallic routes to the synthesis
of Zn and Hg chalcogenides and anisotropic
growth of Cd-based chalcogenides such
as tetrapods and their alloys. Properties of
Group III phosphides, nitrides, arsenides,
and antimonides, which have different optical
properties compared to II-VI semiconductors,
are discussed in chapter 2. This
chapter also reviews the tuning of SQD
properties via dehalosilylation reactions
and non-coordinating solvent routes. It
is shown that the quantum yield can be
increased by varying precursors and their
quantities. Anisotropic nanoparticles with
rod-like morphologies have also been
examined in terms of challenges faced
during their synthesis. Lead-based chalcogenide
properties and synthesis routes are
outlined in chapter 3.
Chapter 4 deals with the synthesis of
other chalcogenides and pnictide-based
materials. Ternary copper-based chalcogenide
core-shell and II3-V2 quantum dots
include CuInSe2 and Cd3P2, respectively,
among many others. Chapter 5 discusses
surface passivation by means of synthesizing
an inorganic capping layer or a core-
shell structure. This thorough chapter is
of fundamental and practical interest. It
describes Type I and Type II core shells and
multiple shell structures targeting a higher
quantum yield. There are also sections
relating to III-V and IV-VI core-shell
structures. Chapter 6 unfolds ligand chemistry
and the purpose of ligands in shaping
the nanoparticles. Chapter 7 describes the
role that the capping agent or the surfactant
plays in terms of its linkable functional moieties.
Various surfactants have been brought
to the reader's attention, namely amines and
thiols, among others, along with surfactant
exchanges based upon them.
The book also covers "green chemistry"
synthesis aspects of SQDs and the use of
biological molecules as capping agents,
viz., DNA. Consideration is given to the
toxicity of the solvents and the search for
phosphine-free systems. Overall, the book
is eye-catching with ample illustrations and
interesting, as the chapter sequence is well
conceived. Moreover, every chapter brings
something new to the reader accompanied
by historical facts pertaining to various
SQD syntheses. As the book is clearly
subtitled "synthesis" and is dedicated to
organometallic and inorganic synthesis, it
would be most suited to synthetic chemists.
However, the physical properties of
various SQDs also are well illustrated, and
this volume is therefore of some interest to
materials scientists and nanotechnologists. -- Protima Rauwel * MRS Bulletin *
Reihe
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Höhe: 234 mm
Breite: 156 mm
Gewicht
ISBN-13
978-1-84973-985-6 (9781849739856)
DOI
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Schweitzer Klassifikation
Mark Green gained a doctorate in quantum dots from Imperial College London in 1998. . Post Doctoral work followed at Imperial College and the University of Oxford. In 2004 he joined Kings College London, becoming Senior Lecturer in 2007. His research interests include organometallic based synthesis of semiconducutor and metal nanoparticles, biological applications of nanomaterials and rare-earth based nanomaterials.
Autor*in
Kings College London, UK
II-VI Materials;
III-V Materials;
IV-VI Materials;
Other Chalcogens and Phosphides;
Core/Shell Particles;
Ligand Chemistry;
Single Source Precursors
