By Abraham Ulman
The advance of orientated natural monomolecular layers by means of the Langmuir-Blodgett (LB) and self-assembly (SA) thoughts has led researchers towards their aim of assembling person molecules into hugely ordered architectures. hence the constantly becoming contribution of LB and SA platforms to the chemistry and physics of skinny natural motion pictures is well known. both recognized is the trouble in maintaining thus far with the burgeoning multidisciplinary study during this region. Dr. Ulman offers an important survey of the to be had literature. The ebook starts with a bit on analytical instruments to increase the certainty of the constitution and houses of monolayers and movies. Following sections speak about LB movies, the education and houses of SA monolayers and movies, the modeling of LB and SA monolayers, and the applying of LB and SA motion pictures.
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Additional resources for An Introduction to Ultrathin Organic Films. From Langmuir–Blodgett to Self-Assembly
Of fatty acids were studied, mainly with the idea that these heavy atoms would help establish the layer structure of the film. With the development of better diffractometers and computer software, it became possible to extend structural studies beyond those films that contained heavy atoms, and higher-order Bragg peaks could be obtained. Today, a resolution of better than 2 Â is possible, and therefore, valuable structural information can be obtained. When this information is compared with information obtained from other techniques, a full interpretation of the x-ray diffraction becomes possible.
Rieutord et al. found a new, nontilted structure of behenic acid monolayers . Bosio et al. reported the first density profile of LB monolayers of lead stéarate at the water-air interface . Outka et al. compared calcium arachidate (CaA) and cadmium arachidate (CdA) monolayers on S i ( l l l ) substrates using near-edge x-ray absorption finestructure (NEXAFS), and reported that while the alkyl chains in the CaA monolayers are normal to the surface (0 ± 15°), those in the CdA monolayers are tilted by 3 3 ± 5° .
Reported on neutron diffraction from spread monolayers of Τ15, a cyanoterphenyl molecule that exhibits a nematic liquid crystal at elevated temperatures . Two reports on new reflectometers appeared in recent years. Penfold et al. reported on a time-of-flight neutron reflectometer for the study of both liquid and solid surfaces and interfaces . Their results indicated that this design allows -6 neutron reflectivities approaching 1 0 to be measured. Stamm et al. reported on a new design of neutron reflectometer for the study of solid and liquid interfaces .
An Introduction to Ultrathin Organic Films. From Langmuir–Blodgett to Self-Assembly by Abraham Ulman