Ordered molecular arrays

M The magnetostriction of terbium alloys has already found many applications. Most recently it was discovered that its compounds can be precipitated on surfaces in highly ordered molecular arrays this promises interesting effects. 

Behrens P., Ordered molecular arrays as templates, a new approach to synthesis of mesoporous materials, Adv. Mater. 5 (1993) pp. 127-132. 

The synthesis and characterization of a mesoporous silicoalumino phosphate are given employing typical structure directing reagent viz. cetyltrimethyl ammonium bromide. The Si MAS NMR showed that silicon is found in coordination with 1, 2, 3 and 4 A1 ions through oxygen bridges. The sorption characteristics of this new mesoporous SAPO material are also presented. Keywords Silico aluminophosphate, Mesoporous, ordered molecular arrays, MAS NMR. 

Batina. N. Kunitake. M. Itaya, K. Highly ordered molecular arrays formed on iodine-modified Au(Tll) in solution In situ STM imaging. J. Electroanal. Chem. 1996. 405, 245-250. 

Liquid crystal An organic liquid whose physical properties resemble those of a crystal in the formation of loosely ordered molecular arrays similar to a regular crystalline lattice and in the anisotropic refraction of light. 

For the attainment of marvelous electron transfer processes in the natural sequential potential fields, many noncovalentaly-bound donor-acceptor (DA) systems and covalently-bound DA systems " " have been previously reported. Most of them are artificial models of the photosynthesis comprising simple assemblies of the dyad (DA) or triad [donor-spacer-acceptor (DSA)] functional molecules with a chromophore such as a porphyrin. The quantum efficiency of such systems is lower (<25%) compared with the biological systems (=100%), and thus more efforts for constructing more efficient systems are necessary. Some of the covalen-taly-bound DA systems have been designed for the fabrication of molecule-scale devices based on a molecular electron-transport wire and/or highly ordered molecular arrays on the surface. " Most of such studies employed the DA nonconju-gated molecules. 

We have evolved a synthetic strategy that has relied upon the formation of catenanes and rotaxanes in the beginning. We regard these compounds - with their mechanically interlocked molecular components - as prototypes for the construction of large and ordered molecular arrays. Once we have established for the chemical systems... 

Designing Ordered Molecular Arrays in Two and Three Dimensions... 

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