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Specialist Periodical Reports provide systematic and detailed review coverage of progress in the major areas of chemical research. Written by experts in their specialist fields the series creates a unique service for the active research chemist, supplying regular critical in-depth accounts of progress in particular areas of chemistry. For over 80 years the Royal Society of Chemistry and its predecessor, the Chemical Society, have been publishing reports charting developments in chemistry, which originally took the form of Annual Reports. However, by 1967 the whole spectrum of chemistry could no longer be contained within one volume and the series Specialist Periodical Reports was born. The Annual Reports themselves still existed but were divided into two, and subsequently three, volumes covering Inorganic, Organic and Physical Chemistry. For more general coverage of the highlights in chemistry they remain a 'must'. Since that time the SPR series has altered according to the fluctuating degree of activity in various fields of chemistry. Some titles have remained unchanged, while others have altered their emphasis along with their titles; some have been combined under a new name whereas others have had to be discontinued.
The fifth edition of the Kirk-Othmer Encyclopedia of Chemical Technology builds upon the solid foundation of the previous editions, which have proven to be a mainstay for chemists, biochemists, and engineers at academic, industrial, and government institutions since publication of the first edition in 1949. The new edition includes necessary adjustments and modernisation of the content to reflect changes and developments in chemical technology. Presenting a wide scope of articles on chemical substances, properties, manufacturing, and uses; on industrial processes, unit operations in chemical engineering; and on fundamentals and scientific subjects related to the field. The Encyclopedia describes established technology along with cutting edge topics of interest in the wide field of chemical technology, whilst uniquely providing the necessary perspective and insight into pertinent aspects, rather than merely presenting information. * Set began publication in January 2004 * Over 1,000 articles * More than 600 new or updated articles * 27 volumes
'The overall book content is excellently coordinated to form a synchronised story, interesting to a broad scientific audience … The book summarises the present knowledge in the field, introduces fundamental concepts to the beginners, describes key measuring methods and presents several different typical demonstrative systems, some of them exhibiting an extraordinary rich spectrum of structures and superstructures. I am sure that with time the book will become an attractor to a broad audience (physicists, chemists, material scientists, engineers, etc.), ranging from students, beginners in the field to experienced researchers. To summarise, this is the book that I have been missing on my bookshelf.'Liquid Crystals TodayWhile liquid crystals are today widely known for their successful application in flat panel displays (LCDs), academic liquid crystal research is more and more targeting situations where these anisotropic fluids are put to completely different use, in varying contexts. A particularly strong focus is on colloidal liquid crystals, where particles, bubbles or drops are dispersed in a liquid crystal phase. The liquid crystal can act as a host phase, with the inclusions constituting foreign guests that disturb the local order in interesting ways, often resulting in large-scale positional arrangement and/or uniform alignment of the guests. But it may also be formed by solid particles themselves, if these are of nanoscale dimensions and of disc- or rod-shape, and if they are suspended in an isotropic liquid host at sufficient concentration.This book aims to cover both the modern research tracks, gathering pioneering researchers of the different subfields to give a concise overview of the basis as well as the prospects of their respective specialties. The scope spans from curiosity-driven fundamental scientific research to applied sciences. Over the course of the next decade, the former is likely to generate new tracks of the latter type, considering the exploratory and productive phase of this young research field.
Much more than a slight revision, this second edition of the successful "Handbook of Liquid Crystals" is completely restructured and streamlined, with updated as well as completely new topics, 100% more content and a new team of editors and authors. As such, it fills the gap for a definitive, single source reference for all those working in the field of organized fluids and will set the standard for the next decade. The Handbook's new structure facilitates navigation and combines the presentation of the content by topic and by liquid-crystal type: A fundamentals volume sets the stage for an understanding of the liquid crystal state of matter, while individual volumes cover the main types and forms, with a final volume bringing together the diverse liquid crystal phases through their applications. This unrivaled, all-embracing coverage represents the undiluted knowledge on liquid crystals, making the Handbook a must-have wherever liquid crystals are investigated, produced or used, and in institutions where their science and technology is taught. Also available electronically on Wiley Online Library, www.wileyonlinelibrary.com/ref/holc Volume 1: Fundamentals of Liquid Crystals Volume 2: Physical Properties and Phase Behavior of Liquid Crystals Volume 3: Nematic and Chiral Nematic Liquid Crystals Volume 4: Smectic and Columnar Liquid Crystals Volume 5: Non-Conventional Liquid Crystals Volume 6: Nanostructured and Amphiphilic Liquid Crystals Volume 7: Supermolecular and Polymeric Liquid Crystals Volume 8: Applications of Liquid Crystals
Introduction - This book, consisting of 10 chapters, should be treated as a complement that brings the reader up to date with the latest contributions to the rich literature on liquid crystals. A prominent place in this literature is occupied by the dielectric properties which are important in estimation of usefulness of these materials and in understanding the molecular processes determining various mesophases. In the field of dielectrics in general, and in connection with the structure and phase transitions the entries in references [1-14] can be recommended. With respect to general aspects of liquid-crystalline properties and molecular dynamics one can point out the references [15-36]. Most of them contain as well chapters on dielectric properties. In addition there is a number of books and monographs related strictly to the dielectric properties of liquid crystals, in particular references [37-45]. For the readers less familiar with this topic and interested in the basic knowledge of dielectric aspects of liquid crystals one can suggest the reviews [46-48]. Basic difference between properties of isotropic liquid and liquid crystal lies in the existence in the latter case of at least one degree of order. The ordering can be also considered with respect to a crystalline phase. Thus introducing at least one degree of disorder (rotational or translational) causes the occurrence of a mesophase which, however, is not identical with the liquid-crystalline phase. If the mesophase is to be liquid-crystalline, it should possess at least one translational degree of disorder. The disorder connected with further degrees of freedom leads to rich polymorphism. The most characteristic feature of liquid-crystalline phases is a precisely defined degree of disorder of molecules building these phases and their anisotropy which is exhibited in molecular structure and all measurable physical parameters such as polarizability. This is the reason why such phases are also called anisotropic liquids. The insertion into the molecules that form mesophases of fragments either chiral or influencing antagonistically already present fragments (e.g. by replacing one alkyl group by perfluorinated chain) leads to additional interactions which compete with interactions responsible for the stability of liquid-crystalline phases. This causes the frustration phenomena, i.e. the mutual overlapping of interactions frequently responsible for opposite effects. These induced phenomena conduce to unexpected structures (banana-type or columnar-type mesophases) and properties such as helicity, ferroelectricity or antiferroelectricity. Of particular interest seem to be ferroelectric liquid crystals (chiral tilted smectics such as SmC*, SmI* and others) showing collective modes: tilt fluctuations (soft modes) and phase fluctuations (Goldstone mode). Unusual progress observed in the last half-century has occurred due to use of some additional interacting fragments and structural details. Liquid crystalline polymers and metalomesogens present rapidly growing branches of knowledge of liquid crystal. Ferromagnetism and superconductivity of liquid crystals still pose a challenge. In this monograph we present different aspects of dielectric properties of mesogens. Chapter 1 presented by Otowski is dedicated to general problems of the molecular dipole s motion in electric field. Based on the broadband dielectric studies results of a few liquid-crystalline substances, their dielectric behavior is discussed by means of Nordio-Rigatti-Segre theory. The pretransitional anomalies observed in isotropic phase close to the phase transitions by means of dielectric measurements are described by Drozd-Rzoska, Rzoska and Janik in Chapter 2. An extended part of this book is devoted to chiral liquid crystals, the importance of which for applications and expectations for them are continuously increasing. The principles of the dielectric behavior of chiral liquid-crystalline compounds based on general considerations applying for other dipolar systems as well is presented by Hoffmann in Chapter 3. In general considerations based on the example of 12 selected substances showing extremely rich polymorphism Marzec, Mikulko, Wróbel and Haase analyze impressive behaviors of collective modes (Chapter 4). The problem of non-linear dielectric effects constitutes an important part of this book. A general introduction to the non-linear dielectric spectroscopy is contained in Chapter 5 elaborated by Kedziora, who concentrates himself on the isotropic phase, solutions and precritical phenomena. The problem of molecular properties of smectic materials and relaxation in ferroelectric liquid crystals with particular attention paid to electrooptic phenomena are discussed by Kuczynski in Chapter 6. Advantages of electrooptic methods applied to chiral tilted smectic liquid crystals with either ferroelectric or antiferroelectric dipole order are known. However, less popular problem of so called organic glass formers presented by Massalska-Arodz, Sciesinska, Sciesinski, Krawczyk, Inoba and Zielinski in Chapter 7 deserved attentions. Properties of these materials are discussed by using the results of complementary methods such as INS, QENS, adiabatic calorimetry and far-infrared spectra. Chapter 8, presented by Rózanski, is devoted to the dielectric properties of liquid crystals confined in porous matrices or dispersed throughout solid matrices. Such systems seem to be fascinating not only from the point of view of surface interactions but also due to attractive properties of dispersed systems in nanoscale. Of great value is also Chapter 9 by Kocot, Merkel, Sufin, Vij and Mehl describing dendrimeric liquid crystals built of molecules containing siloxane or carbosilazane cores. The problems of dynamics and ordering are discussed in terms of IR and dielectric spectroscopy results. Chapter 10, written by Urban, is committed to the relaxation processes in calamitic liquid crystals with emphasis on pressure and temperature effects. Finally let us direct readers attention to general references relating to the new liquid crystalline compounds [49] and IUPAC classification of these systems [50]. 1. Boettcher C. J. F., van Belle O.C., Bordewijk P. and Rip A., 1973, Theory of Electric Polarization, Vol.I: Dielectrics in Static Fields, 2nd revised edition, Elsevier Science Ltd, Amsterdam. 2. Boettcher C.J.F. and Bordewijk, 1978, Theory of Electric Polarization, Vol.II. Dielectrics in Time-dependent Fields, 2nd revised edition, Elsevier Science Ltd, Amsterdam. 3. Hill N., Vaughan W.E., Price A.H. and Davies M., 1969, Dielectric Properties and Molecular Behaviour, van Nostrand, London. 4. Froehlich H., 1958, Theory of Dielectrics, Oxford University Press, London. 5. von Hippel A.R., 1995, Dielectric Materials and Applications, Artech House Publishers. 6. Davies M., 1965, Some Electrical and Optical Aspects of Molecular Behaviour, Pergamon Press, Oxford. 7. Scaife B.K.P., 1998, Principle of Dielectrics, Revised edition, Oxford University Press, Clarendon, Oxford. 8. Riande E. and Diaz-Calleja R., 2004, Electrical Properties of Polymers, Marcel Dekker, NY. 9. Jonscher A.K., 1996, Universal Relaxation Law, Chelsea Dielectric Press Ltd, London. 10. Grigas J., 1996, Microwave Dielectric Spectroscopy of Ferroelectrics and Related Materials, Series: Ferroelectricity and Related Phenomena, Volume 9, Gordon and Breach Science Publishers, Philadelphia. 11. Runt J.P. and Fitzgerald J.J.(Eds.), 1997, Dielectric Spectroscopy of Polymeric Materials, American Chemical Society, Washington, DC. 12. Havriliak S. and Havriliak S.J., 1996, Dielectric and Mechanical Relaxation in Materials, Hanser Verlag, München. 13. Gaiduk V.I. and McConnel J.R., 1999, Dielectric Relaxation and Dynamics of Polar Molecules, World Scientific Pub. Co.Inc., Singapore. 14. Kremer F. and Schönhals A. (Eds) 2002, Broadband Dielectric Spectroscopy, Springer, NY. 15. Demus D., Goodby J., Gray G.W., Spiess H.W. and Vill V. (Eds.), 1998, Handbook of Liquid Crystals, 4-Volume Set, Wiley-VCH, Veinheim. 16. Demus D., Goodby J., Gray G.W., Spiess H.W. and Vill V (Eds.), 1999, Physical Properties of Liquid Crystals, Wiley-VCH, Veinheim. 17. Stegemeyer H. (Ed.), 1994, Liquid Crystals, Steinkopff, Darmstadt and Springer, NY. 18. Buka A. (Ed.), 1993, Modern Topics in Liquid Crystals. From Neutron Scattering to Ferroelectricity, World Scientific, Singapore. 19. Dierking I., 2003. Texture of Liquid Crystals, Wiley-VCH, Weinheim. 20. Luckhurst G.R. and Gray G.W. (Eds.), 1979, The Molecular Physics of Liquid Crystals, Academic Press, London. 21. de Gennes P.G. and Prost J., 1993, The Physics of Liquid Crystals, 2nd edition, Clarendon Press, Oxford. 22. Gray G.W. and Goodby J.W., 1984, Smectic Liquid Crystals. Textures and Structures, Leonard Hill, Glasgow. 23. Martellucci S. and Chester A.N. (Eds.), 1992, Phase Transitions in Liquid Crystals, NATO ASI Series, Vol.B290, Plenum Press, NY. 24. Luckhurst G.R. and Veracini C.A. (Eds.), 1994. The Molecular Dynamics of Liquid Crystals, NATO ASI Series, Vol.C431, Kluwer, Dordrecht. 25. Priestley E.B., Wojtowicz P.J. and Sheng P. (Eds.), 1975, Introduction to Liquid Crystals, Plenum Press, NY. 26. Lagerwall S.T., 1999, Ferroelectric and Antiferroelectric Liquid Crystals, Wiley-VCH, Weinheim. 27. Baus M., Rull L.F. and Ryckaert J.P. (Eds.), 1995, Observation, Prediction and Simulation of Phase Traansitions in Complex Fluids, Kluwer, Dordrecht. 28. Anisimov M.A., 1991, Critical Phenomena in Liquids and Liquid Crystals, Gordon & Breach, Philadelphia 29. Vertogen G. and de Jeu W.H., 1986, Thermotropic Liquid Crystals, Fundamentals, Springer, Berlin 30. de Jeu W.H., 1980, Physical Properties of Liquid Crystalline Materials, Gordon & Breach, NY 31. Helfrich W. and Heppke G., (Eds.), 1980, Liquid Crystals of One and Two Dimensional Order, Springer, Berlin. 32. Goodby J.W., Blinc R., Clark N.A., Lagerwall S.T., Osipov M.A., Pikin S.A., Sakurai T., Yoshino K. and }eka B., 1991, Ferroelectric Liquid Crystals. Principles, Properties and Applications, Series: Ferroelectricity and Related Phenomena, Volume 7. Gordon and Breach, Philadelphia. 33. Pikin S.A., 1991, Structural Transformations in Liquid Crystals, Gordon and Breach, NY. 34. Haberlandt R., Michel D., Poppel A. and Stannarius R., 2005, Molecules in interaction with surfaces and interfaces, Springer NY. 35. Crawford G.P. and }umer S., (Eds), Liquid Crystals in Complex Geometries, 1996, Taylor & Francis, London. 36. Muaevic I., Blinc R. and }eka B., 2000, The Physics of Ferroelectric and Antiferroelectric Liquid Crystals, World Scientific, Singapore. 37. Haase W. and Wróbel S. (Eds.), 2003, Relaxation Phenomena. Liquid Crystals, Magnetic Systems, Polymers, High-TC Superconductors, Metallic Glasses., Springer, NY. 38. Kresse H., 1983, in: Advances in Liquid Crystals, Vol.6, Brown G.H. (ed.), Academic Press, NY. 39. Coffey W.T. and Kalmykov Y.P. 2000, Adv.Chem.Phys. 111, 487. 40. de Jeu W.H., 1978, in: Solid State Physics, Supplement 14. Liebert L. (ed.), Academic Press. 41. Rzoska S.J. and Zhelezny V.P., (Eds), 2004, Nonlinear Dielectric Phenomena in Complex Liquids, Kluwer, Dordrecht. 42. Urban S. and Wuerflinger A., 1979, Adv.Chem.Phys., 98, 143. 43. Kresse H., 1982, Fortschrifte der Physik, 80, 507. 44. Urban S., 2001, in: Physical Properties of Liquid Crystals: Nematics, Dunmur D., Fukuda A. and Luckhurst G. (Eds.), Inspec, London, p.267. 45. Blinov L.M. and Chigrinov V.G., 1994, Electrooptic Effects in Liquid Crystal Materials, Springer, NY. 46. Meier G. and Saupe A., 1966, in: Liquid Crystals, Brown G.H., Dines G.J. and Labes M.M. (Eds.), Gordon and Breach, Philadelphia. 47. Kresse H., 1998, in: Handbook of Liquid Crystals, Demus D., Goodby J., Gray G.W., Spiess H.W. and Vill V. (Eds.), Vol.2, Wiley-VCH, Veinheim. 48. Dunmur D and Toriyama K., 1998, in: Handbook of Liquid Crystals, Demus D., Goodby J., Gray G.W., Spiess H.W. and Vill V. (Eds.), Vol. 1, Wiley-VCH, Veinheim. 49. Vill V., 2006, LiqCryst 4.6. Data Base, Fujitsu. 50. Byron M. et al. 2001, Pure Appl.Chem., 73, 845.