close

Вход

Забыли?

вход по аккаунту

?

Electrokinetic Phenomena. Principles and Applications in Analytical Chemistry and Microchip Technology. Edited by Anurag S. Rathore and Andrs Guttman

код для вставкиСкачать
Books
Silicon Chemistry
From the Atom to
Extended Systems.
Edited by Peter Jutzi
and Ulrich Schubert.
Wiley-VCH, Weinheim 2003.
494 pp., hardcover
E 129.00.—ISBN
3-527-30647-1
This book collects together the results
from a binational research program carried out between 1996 and 2002 by the
German Research Group (Deutsche
Forschungsgemeinschaft, DFG) and
the Austrian Foundation for Scientific
Research (Fonds zur F'rderung der wissenschaftlichen Forschung, FWF). The
theme of the German work was “Specific Phenomena in Silicon Chemistry”,
while that of the Austrian work was
“New Routes to the Formation and
Reactivity of Silicon Compounds”. The
book contains the contributions of the
39 participating research groups. The
aim of the editors was that the results
reported in the individual contributions
should be presented within a larger context rather than set out in all their fine
detail. The vast amount of material has
been structured in three areas.
The first area is concerned with reactive intermediates in silicon chemistry,
and their synthesis, characterization,
and kinetic stabilization. The topics covered range from matrix-isolated reactive
SiH and SiO species to the kinetic stabilization of systems with multiple bonds.
The chemistry of silicon atoms leads to
extremes ranging from the highly reactive disilene H2Si=SiH2 to the most
abundant oxide of silicon in the uni-
2990
verse, silicon monoxide. The chemistry
of molecular silicon monoxide, in particular its oligomerization and its ability to
coordinate to metal atoms, is also discussed. Deposition processes for the
production of thin silicon films are
described, as also is the oxidation of silylenes with sterically simple substituents.
In addition to disilenes and conjugated
multiply bonded silicon systems, the
articles also indicate possible routes to
triple-bonded species RSiSiR, which
are currently the most extreme bonding
structures that one hopes to achieve by
kinetic stabilization of reactive silicon
species.
The second part of the book is
devoted to Si–Si systems, which range
from molecular building blocks to
extended networks. This section (as
well as the other two) begins with a
short introduction by the editors, in
which the individual contributions are
considered in relation to the wider context. The topics treated in the articles
include silyl and oligosilyl anions as
nucleophilic building blocks, silicon
chains in polysilanes (R2Si)n, and Zintl
phases. Two contributions are concerned with solid silicon monoxide.
Others discuss silicon clusters and nanoparticles in the context of photoluminescent porous silicon materials.
The third part is concerned with SiO
systems, and again ranges from molecular building blocks to extended networks. The many different forms of silicates in nature and the numerous technological applications of silicones provide the opportunity for a series of articles about molecular silicon–oxygen
species as precursors for the formation
of larger structures. Cage compounds
in which SiO groups are combined with
other MO groups point the way to
molecular “silicates”. The stepwise formation of SiO networks by hydrolysis
and oxidation of SiCl4 is also described.
Other chapters deal with the synthesis
and manipulation of meso-structured
materials. The book concludes with a
consideration of nature as “teacher”,
and of biosilicifation, which leads to
the fascinating structures of radiolites
and diatoms.
With so many authors one finds, as
expected, that the contributions differ
in style and individual characteristics.
However, they mainly present the cur-
; 2004 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
www.angewandte.org
rent state of knowledge, covering literature published up to 2002. The editors
have succeeded in putting together a
wide-ranging monograph on developments in many of the most important,
although clearly not all, areas of silicon
chemistry during the last few years.
Gerald Linti
Anorganisch-Chemisches Institut
Universit.t Heidelberg (Germany)
Electrokinetic Phenomena
Principles and
Applications in
Analytical Chemistry and Microchip
Technology. Edited
by Anurag S.
Rathore and Andrs
Guttman. Marcel
Dekker, Inc., New
York 2004. 476 pp.,
hardcover
$ 175.00.—ISBN
0-8247-4306-7
For the book Electrokinetic Phenomena:
Principles and Applications in Analytical Chemistry and Microchip Technology, the editors A. S. Rathore und A.
Guttman have succeeded in getting top
experts as authors for every chapter.
That guarantees consistently high quality of the individual chapters, which are
all written in a very clear and understandable style.
This book describes the rapidly
advancing knowledge of the various
modes of capillary electrophoresis
(CZE, MEKC, CGE, cIEF, ACE,
CEC, m-CE) in a compact, easily readable, and competent form. For the experienced CE user, it is much to be recommended. For the beginner, however,
there are more appropriate books on
the market.
After an unusual, but nevertheless
effective introduction, in which the separation mechanisms of CZE are compared with those of HPLC and CEC,
Angew. Chem. Int. Ed. 2004, 43, 2990 – 2991
Angewandte
Chemie
author Robert Weinberger, an acknowledged expert in CE, reveals his analytical tricks and gives some very useful
practical tips that will interest the experienced CE user. This is followed by an
extensive and competent description of
several techniques (cIEF, CGE, and
ACE), of which cIEF and ACE are
treated too briefly in many CE textbooks. The following four chapters,
dealing with various aspects of CEC,
are very thorough and leave hardly any
questions unanswered. Thus in Chapter
6, alongside in-depth theoretical considerations, the influence of various parameters on the resolution is clearly
explained. The description of the electroosmotic flow in CE is particularly
effective and very welcome, since this
aspect has not been covered so thoroughly in any textbook with which I
am familiar. The next chapter treats
rather practical aspects of CEC, such
as various ways of packing or of forming
Angew. Chem. Int. Ed. 2004, 43, 2990 – 2991
frits, with even an excellent description
of the keystone effect. Chapter 8 deals
with the influence of an extremely low
EOF on the separation efficiency, and
would have been more appropriately
placed as Chapter 7 in the book.
Another treasure is the chapter on
ultra-short-column CEC, which is itself
unfortunately rather short. An introduction to the innovative and fascinating
world of micro-CEC is then presented
in three interesting chapters, with the
assistance of many clear schematic diagrams. Most of the highlights of this relatively new technique that are known
from the literature are described in
detail. Although the coupling of CE
and CEC with NMR, still a very
research-intensive topic, is thematically
less appropriate to this book, the excellent presentation in Chapter 13 by
well-known authors is very much worth
reading. The most varied applications
from the area of CEC and micro-CEC
www.angewandte.org
are presented at length in the 125
pages of the last two chapters. These
would be of enormous assistance in
applying capillary electrophoresis to
solve a particular analytical problem.
Especially worth mentioning is the
table of CEC applications, classified
according to the stationary phase; not
even molecularly imprinted polymers
have been forgotten. The most up-todate literature is cited at the end of
each chapter. I can recommend this
book without reservation to everyone
who already has some experience with
capillary electrophoresis.
Oliver J. Schmitz
Department of Analytical Chemistry
Faculty of Mathematics and
Natural Sciences
Wuppertal (Germany)
DOI: 10.1002/anie.200385138
; 2004 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
2991
Документ
Категория
Без категории
Просмотров
1
Размер файла
72 Кб
Теги
analytical, application, andrã, electrokinetic, guttman, anura, rathore, chemistry, phenomena, technology, edited, microchip, principles
1/--страниц
Пожаловаться на содержимое документа