Building blocks, molecular

Most inorganic or organic energetic materials contain at least one of the building blocks shown in Table 10.1 and can therefore be classified by their functional groups. 

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Amino acids are the molecular building blocks of peptides and proteins. About 20 common amino acids are known. 

With diphosphanes recently Stephan et al. reported an intriguing Al and P based macrocyclic structure [37]. A zirconium based catalyst precursor first was employed in the catalytic dehydrocoupling of the primary bidentate phosphane to give the tetraphosphane 6, (Scheme 4). The function of 6 as a molecular building block has been demonstrated by its reaction with MMe3(M = Al, Ga). Although, the gallium derivative 7 has not been... 

In general, nanotechnology MBBs are distinguished for their unique properties. They include, for example, graphite, fullerene molecules made of various numbers of carbon atoms (C60, C70, C76, C240, etc.), carbon nanotubes, nanowires, nanocrystals, amino acids, and diamondoids [97]. All these molecular building blocks are candidates for various applications in nanotechnology. 

G. A. Mansoori, T. F. George, G. Zhang, and L. Assoufid (eds.), Molecular Building Blocks for Nanotechnology From Diamondoids to Nanoscale Materials and Applications (Topics in Applied Physics Series), Springer-Verlag,New York, 2006. 

Life as we know it depends on this existence of water as a liquid. Biochemical processes require free movement of chemicals, which cannot occur in the solid phase. Biochemical stmctures contain many interlocking parts that would not be stable in the gas phase. Thus, the liquid phase is best suited for life. Moreover, water is an excellent solvent, particularly for molecules that can form hydrogen bonds. As we describe in Chapter JA, the molecular building blocks of living matter are rich in groups that form hydrogen bonds. This allows biological molecules to be synthesized, move about, and assemble into complex structures, all in aqueous solution. 

C13-0002. Amino acids are the molecular building blocks of proteins. Any two amino acids can condense in two ways each creates an amide linkage. Draw the stmetures of the two condensation products that link these two amino acids ... 

The self-similar spectrum is not valid at short times, X < X0, where the details of chemical structure become important (glass transition, entanglements, etc.). The cross-over to the glass transition at short times is typical for all polymeric materials, for both liquids and solids. The critical gel is no exception in that respect. X0 could be used as a characteristic time in the CW spectrum since it somehow characterizes the molecular building block of the critical gel however, it has no direct relation to the LST. At times shorter than X0, the LST has no immediate effect on the rheology. Indirect effects might be seen as a shift in the glass transition, for instance, but these will not be studied here. 

The present activity in the field reflects the unique capabilities available with dendrimers Basically the whole world of chemistry can be conceived as a dendritic molecule in the shape of almost any molecular building blocks of organic, inorganic or biochemical origin. Practically every chemist should be able to enter the field of dendrimer chemistry or take advantage of it for his specific needs. 

Molecular electronics was bom in the 1990s as a branch of nanotechnology dealing with the study and application of molecular building blocks for the fabrication of electronic components [1-3]. Today, after more than 15 years of intense... 

What are the facts of life One of the most striking is that all known living systems involve the same types of polymers, i.e., three varieties of homochiral biopolymers. That is, each variety is composed of unique molecular building blocks having the same three-dimensional handedness. Thus, with rare exceptions, the proteins found in cells are composed exclusively of the 1-enantiomers of 19 optically active amino acids (Fig. 11.1). Similarly, only D-ribose and 2-deoxy-D-ribose sugars are found in the nucleic acid polymers that make up the RNAs and DNAs, which are essential for protein synthesis in the cell and for the transmission of genetic information from one generation to the next. 

If you could shrink down to the size of an atom, you would see the regular arrangement of the atoms. But, in fact, you don t have to shrink down to see this the shape of the big crystal is the same as the shape of the smaller, molecular building blocks. 

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