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Chemical methods for the exfoliation of transition metal Chemical methods for the exfoliation of transition metal dichalcogenides in a liquid medium to give single-layer dispersions dichalcogenides in a liquid medium to give single-layer dispersions containing quasi-two-dimensional layers of these compounds are containing quasi-two-dimensional layers of these compounds are surveyed. Data on the structure of dispersions and their use in the surveyed. Data on the structure of dispersions and their use in the synthesis of various types of heterolayered intercalation com-synthesis of various types of heterolayered intercalation compounds are discussed and described systematically. Structural pounds are discussed and described systematically. Structural features, the electronic structure and the physicochemical proper-features, the electronic structure and the physicochemical properties of the resulting intercalation compounds are considered. The ties of the resulting intercalation compounds are considered. The potential of this method of synthesis is compared with that of potential of this method of synthesis is compared with that of traditional solid-state methods for the intercalation of layered traditional solid-state methods for the intercalation of layered crystals. The bibliography includes 192 references crystals. The bibliography includes 192 references. .

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Modern modifications of the conventional X-ray meth-Modern modifications of the conventional X-ray methods of physicochemical analysis (X-ray and electron spectroscopy, ods of physicochemical analysis (X-ray and electron spectroscopy, diffraction methods, diffraction methods, etc. etc.) and new combined techniques using) and new combined techniques using X-ray synchrotron radiation are considered. Unique character-X-ray synchrotron radiation are considered. Unique characteristics of synchrotron radiation are noted, namely, continuous istics of synchrotron radiation are noted, namely, continuous spectrum, exceptionally high intensity, polarisation, coherence, spectrum, exceptionally high intensity, polarisation, coherence, pulse nature, pulse nature, etc. etc. The key trends in the use of combined methods The key trends in the use of combined methods in chemistry and materials science including studies of substances in chemistry and materials science including studies of substances under extreme conditions, the study of rapid processes, studies under extreme conditions, the study of rapid processes, studies with high spatial resolution are discussed. The achievements in the with high spatial resolution are discussed. The achievements in the applications of synchrotron radiation are illustrated by examples applications of synchrotron radiation are illustrated by examples from various fields of chemistry and related sciences. The biblio-from various fields of chemistry and related sciences. The bibliography includes 405 references. graphy includes 405 references.. .

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