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Industrial Organic Pigments. Production Properties Applications. 3rd Edition

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Angewandte
Books
Chemie
Microsystem Engineering for Labon-a-Chip Devices
By Oliver Geschke,
Henning Klank and
Pieter Tellemann.
Wiley-VCH, Weinheim 2003. 258 pp.,
hardcover
E 89.00.—ISBN
3-527-30733-8
The journey from conceptualization to
realization of miniaturized devices
requires an understanding of multiple
disciplines. This inherent interdisciplinary nature of the field makes it necessary for a novice to understand various
concepts, including the motivation for
building microdevices (e.g., DNA
chip), a combined knowledge of chemistry and micromachining for the fabrication of the devices, a knowledge of
mechanical engineering to understand
fluid flow within the devices, and a
knowledge of electrical methods to integrate electrical components. The book
provides a good overview of important
concepts (e.g., fluid flow, transport) followed by chapters with examples from
the literature (components, simulations
in microfluidics, clean-room processing,
micromachining, of silicon, glass, and
polymers, packaging of microsystems,
and applications of microsystems in analytical chemistry). The key steps in
designing and realizing a device are
arranged in a “design flow diagram”,
which is repeated at the beginning of
each chapter to remind the reader of
the stage in the journey from design to
Angew. Chem. Int. Ed. 2004, 43, 4393 – 4395
prototype, thus putting the current chapter in perspective.
The theoretical aspects are introduced at a very basic level, and no
lengthy derivations are presented.
Chapter 3 describes theoretical aspects
of fluids, and extends these to system
design. This chapter will be useful for
readers with little or no background in
fluidics. Chapter 4 provides a thorough
overview of various microfluidic components, from valves to optical sensors.
Chapter 5 discusses simulation and
takes the reader through an example—
again useful for someone who is interested in simulations but unfamiliar
with the field. The “lab-on-a-chip” concept started with traditional fabrication
methods such as deposition and etching
using standard materials such as silicon
and glass wafers, as described in Chapters 6 and 7. These materials are advantageous over others for chemical analysis systems because of their inherent
chemical resistance. However, there
has also been a great deal of research
on polymeric microdevices made with
silicone rubber and PMMA. The book
adequately describes some areas of polymer micromachining (Chapter 8), but
does not expand on soft lithography,
which is widely used in the field of
microfluidics. A more lengthy description and examples of silicone-rubberbased lab-on-a-chip systems would
have greatly improved the usefulness
of the book. However, the book does
elaborate on key areas often overlooked
in the field, including connections from
micro to macro, and packaging, devoting
a whole chapter to each of these areas.
Who is the book intended for?
Although it addresses various concepts,
the description is at a very basic level.
The examples, especially for polymeric
materials (Chapter 8), are from commercial products. Since most ideas and
devices are currently at the research
level and have not yet made it to the
market, it is hard to get a complete picture of this growing field by focusing on
commercial applications. There is much
emphasis on standard lithographic techniques on glass and silicon, whereas the
majority of current research and development is directed towards polymeric
materials. However, lab-on-a-chip devices now also cater to the needs of cell
and molecular biology. Therefore, the
www.angewandte.org
book falls short of covering the interests
of biologists.
In conclusion, the book is a useful
addition to the literature and would be
useful as an undergraduate textbook,
to bridge the gap between the engineers
and the chemists, or also as an introduction to the field of microfluidics for
researchers who are unfamiliar with
the field. Conference proceedings and
journal articles will remain the best
source of up-to-date information for
researchers active in this fast-moving
field.
Jaisree Moorthy, David T. Eddington,
David J. Beebe
Department of Biomedical Engineering
University of Wisconsin, Madison (USA)
Industrial Organic Pigments
Production, Properties, Applications.
3rd Edition. By Willy
Herbst and Klaus
Hunger. Wiley-VCH,
Weinheim 2004.
660 pp., hardcover
E 229.00.—ISBN
3-527-30576-9
The development of organic pigments is
one of those quiet technological (r)evolutions. Brightly colored articles made
of plastics, attractive packaging materials, brilliant and durable car finishes,
and the many magazines, journals, and
brochures that use color have become
a familiar part of everyday life in the
past 50 years. Much of this development
has been made possible by those colored
organic nanoparticles that nowadays
help us to introduce more individuality
into our world through the use of color.
Since its first publication (in
German) in 1987, “Herbst and
Hunger” has gained wide recognition
as a comprehensive encyclopedia of
this technology. Moreover, because it
2 2004 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
4393
Books
also has some of the character of a textbook, it can serve as an introduction to
the subject for novice pigment users or
pigment developers, most of who subsequently keep it to hand as a valuable reference source.
Many of the products described in
this book have had a firm place in the
market for several decades. As in previous editions, these pigments make up
the largest part of the work. This comprehensive survey of the chemistry of
the pigments, including details of their
special properties for technological
applications, gives the reader a unique
means of entry into the labyrinth of coloring materials.
The first chapter deals with general
fundamental principles and scientific
and technical concepts. Following that,
the book describes practically the
whole range of methods and tools available to the color chemist or pigment
developer: the design of the chromophore, aspects of crystal engineering,
and crystallization techniques for producing particles of suitable size and morphology. Methods for the physical characterization of pigments and for determining color fastness and other properties are described, including the interpretation of data from measurements,
and there is a detailed discussion of dispersion properties and conditions affecting color. However, the literature citations in this chapter are centered
around about 1975—readers would
have appreciated being given more upto-date references.
The grouping of pigments according
to their chemical structural classes is a
convenient system, which is easy for
the reader to follow. The authors have
devoted much attention to azo pigments,
a field in which they have special expertise, and they provide a uniquely
detailed account of the development of
this class of pigments, which has more
branches and ramifications than any
other. The list of the most important
classes of pigments covered in the
book also includes isoindolines, isoindolinones, phthalocyanines, quinacridones,
perylenes, diketopyrrolopyrroles, dioxazines, and anthraquinones.
For each class of pigments the
authors explain the structural principle,
and describe the history of its development, structure–property relationships,
4394
methods of synthesis, and lastly the general properties and areas of application.
The applications-related properties of
individual pigments within the class are
then described in detail in accordance
with their economic importance. Altogether, the work provides the pigments
user with a wide-ranging survey of the
properties of several hundred pigments,
in a form that is independent of their
manufacturers and trade names.
The book concentrates exclusively
on pigments that are in commercial use
for conventional decorative applications
as coloring agents in paints and lacquers,
plastics, and printing inks. This aspect is
covered comprehensively. Other areas
of application of pigments, whether for
color properties (e.g., in color filters),
for other functions (e.g., as photoconductors), or in new concepts (e.g.,
latent pigments) are not covered.
This third edition of “Herbst and
Hunger” remains true to its genre,
which is between a textbook and a
work of reference. There is no other
comparable book that covers the physical fundamentals, chemistry, and applications properties of organic pigments
so comprehensively, and in so compact
and attractive a form.
Peter Erk
BASF Aktiengesellschaft
Ludwigshafen (Germany)
DOI: 10.1002/anie.200385186
Metal–Ligand Bonding
By Bob Janes and
Elaine Moore. Royal
Society of Chemistry, Cambridge
2004. 104 pp., softcover £ 24.95.—
ISBN 0-85404-979-7
In Metal–Ligand Bonding, which is
based on part of a course at the Open
University in Great Britain (http://
2 2004 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
www.angewandte.org
www.open.ac.uk) and is published by
the Royal Society of Chemistry, Bob
Janes and Elaine Moore give an excellent description of the theoretical fundamentals of the bonding of ligands to
transition metals. It is intended for
beginners in coordination chemistry,
and is written in a way that makes it
easily accessible to such readers. Starting from d orbitals, the reader works
through the topics of crystal- field
theory, UV/Vis spectroscopy, magnetism, and finally molecular orbital
theory applied to transition-metal complexes. Although many textbooks of
inorganic chemistry devote one or
more chapters to these topics, this little
book differs from them, insofar as it
serves as an excellent bridge between
simpler treatments of coordination
chemistry and those that are more
detailed and advanced.
The book has a very good didactic
structure, and it is a pleasure to work
through it. Although it consists of only
104 pages, all the recently introduced
ideas are explained, and often illustrated
by examples. The authors even find
space to explain the secret of the Lifschitz salts, and to mention research on
special tetrahedral complexes. The text
is illustrated by clearly drawn figures
throughout, many in color, and there
are also a few photographs of experiments. All the longer chapters end with
a summary of the contents, and there is
a list of learning objectives at the end
of the book. The readerEs learning achievements are tested by various exercise
problems. These are given in the forms
of questions and answers linked directly
to the text, problems at the end of each
section, and a comprehensive final test
paper at the end of the book. Detailed
answers to all the problems are given
in the appendix.
However, I was not so pleased to
find that there are no literature references, not even to more advanced books
on coordination chemistry. Also I
found the chapter on magnetism too
compressed in comparison to the other
chapters. Here it would have been
better to explain the points more fully,
especially at the beginning of the chapter. In the detailed treatment of the
theory of magnetic and spectrosopic
properties, I would have liked to see
short discussions of the spin-crossover
Angew. Chem. Int. Ed. 2004, 43, 4393 – 4395
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