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Book Review Nonlinear Optical Properties of Organic Molecules and Crystals. Edited by D. S. Chemla and J. Zyss

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A list of the halogen compounds produced by a wide range
of different organisms gives impressive evidence of the
large number of such compounds formed in nature. The
chapters on halogenating enzymes include, in addition to a
rather too detailed compilation of schemes for the purification of those haloperoxidases which have so far been
isolated, a summary of the reactions catalyzed by these enzymes. The section on the mechanism of enzymatic halogenation deals with the various theories currently being
considered, from which it is evident that it has not yet been
possible to unambiguously clarify the mechanism. The importance of halogenating enzymes and of naturally occurring halogen compounds is discussed in terms of their enhanced biological activity compared with the corresponding non-halogenated compounds, with reference to a number of examples. One chapter deals with the relationship
between halogenating enzymes and defence mechanisms
in mammals. For example, hypochlorite can act as a n antiseptic. Chapter 8 discusses biological dehalogenation,
which is not simply a reversal of the halogenation process.
This environmentally important topic is, however, not
treated fully.
This book is indispensable for scientists involved in
work on biological halogenation, and for others it undoubtedly makes interesting reading.
Franz Lingens, Karl-Heinz van Pbe [NB 894 IE]
Institut fur Mikrobiologie
der Universitat Hohenheim (FRG)
Nonlinear Optical Properties of Organic Molecules and
Crystals. Edited by D. S . Chemla and J . Zyss. Academic
Press, Orlando, FL (USA) 1987. xiii, 482 pp., bound,
$67.50.-ISBN 0-12-17061 1-7
Optical techniques are becoming increasingly important
in the storage, transfer and processing of information. The
demands for miniaturization and faster processing of data
are forcing the adoption of technologies which make use
of the unique properties of organic molecules. This book
begins with a short introduction by R . Silbey (“The Structure and Properties of the Organic Solid State”, 18 pp.),
which gives a survey of the physics and chemistry of solid
organic compounds in relation to their optical properties
and electrical conductivity.
In the article “Quadratic Nonlinear Optics and Optimization of the Second-Order Nonlinear Optical Response of
Molecular Crystals” (169 pp.) J. Zyss and D . S. Chemla
deal with the physical and mathematical aspects of qua-
dratic nonlinear optics in molecules and molecular crystals. D. Pugh and J . 0. Morley, in the chapter ‘‘Molecular
Hyperpolarizabilities of Organic Materials” (33 pp.), show
how quantum theoretical models can be used to calculate
polarizabilities and hyperpolarizabilities. The chapter
“Design and Synthesis of Organic Molecular Compounds
for Efficient Second-Harmonic Generation” (70 pp.) by J .
F. Nicoud and R . J . Twieg continues the theme of the second chapter by treating the chemical and physicochemical
aspects of “optical materials”, with numerous examples
and literature references. The contribution “Growth and
Characterization of Molecular Crystals” (60 pp.) by J.
Badan, R . Hierle, A . Perigaud, and P. Vidakovic deals with
these important techniques as applied to organic crystals
and waveguide structures. A . Barraud and M. Vandemeyer,
in the chapter “Growth and Characterization of Organic
Thin Films (Langmuir-Blodgett Films)” (27 pp.), discuss
the preparative aspects and characterization of such films.
“Properties and Applications of Urea” (20 pp.) by J.-M.
Halbout and C . L. Tang is a well researched contribution
dealing with the nonlinear optical properties of crystalline
urea. Next, in the chapter “Nonlinear Optical Properties
of Guest-Host Polymer Structures” (31 pp.), D. J. Williams
discusses the physical properties of structures of this kind
with organic molecule “guests”, in which the host materials may be thermoplastic polymers, thermoplastic liquid
crystal polymers, or polar polymer chains in an isotropic
medium. The final chapter “Electro-Optic Organic Materials” (32 pp.) by K . D . Singer, S . L. Lalama, J. E. Sohn,
and R . D. Small deals with electro-optical processes in organic materials; applications to optical integrated circuits
are described with a number of examples.
Each chapter is followed by a detailed bibliography extending u p to 1986. A comprehensive subject index enables
one to find information on specialized topics. Certain
equations and facts are frequently repeated in different
chapters; cross-referencing here could have saved a few
pages. The editors come out firmly against making a distinction between linear and nonlinear optics, pointing out
that optics is in essence nonlinear. One can only agree with
this statement and commend it to all authors who adopt
too narrow a definition of nonlinear processes. The book
can be recommended unreservedly to physicists, chemists
and advanced students who are concerned with the optical
properties of organic compounds.
Manfred Dieter Lecher [NB 873 IE]
Institut fur Physikalische Chemie
der Universitat Osnabriick (FRG)
Regisrered tmnre.~,rradetnorks, el< used rtt rhis ,ourno/. euen when nor morked as such. are no1 ro be considered unprorecred bs law.
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Angew. Chem. I n t . Ed. Engl. 27 (1988) No. 7
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