Crystalline Functionality

Liquid Crystalline Functional Assemblies and Their Supramolecular Structures... 

The ROMP of 136 may be used as the first stage in the preparation of polyacetylene molecules with mesogenic (liquid-crystalline) functional groups at the chain ends the ROMP of 136 is initiated by a molybdenum carbene complex and the living ends terminated by reaction with a substituted benzaldehyde bearing a mesogenic group, followed... 

Before the development and widespread application of spectroscopic methods for the elucidation of structure, confirmation of the class type of an unknown organic compound was completed by the preparation of two or more crystalline functional derivatives. If the compounds had been previously reported in the literature, agreement between the published physical constants of the derivatives with those prepared by the worker was accepted as proof of identity. In many cases, and particularly in natural product chemistry, functional group recognition led to oxidative, reductive, or hydrolytic breakdown into smaller carbon-containing fragments. These were, if necessary, separated, characterised and identified by derivative preparation. The reassembly of the jig-saw of fragments inferred by the identity of the fission products, then led to postulated structures. 

Kato T (2008) Liquid crystalline functional assemblies and their supramolecular structures. Structure and Bonding. Springer, Berlin, p 128... 

T. Kato (ed.). Liquid Crystalline Functional Assemblies and Their Supramolecular Structures, Structure and Bonding, vol. 128 (Springer, Berlin, 2008), pp. 1-237... 

The use of liquid crystalline functionalities in conjugated polymers facilitates their macroscopic alignment upon application of an external force such as shear stress or an electric or magnetic field [13-20]. Macroscopic alignment leads to an enhancement of the anisotropic functionalities of self-assembled conjugated polymers, which could pave the way for the development of advanced electro-conductive or fluorescent materials [27]. 

Poly(butylene terephthalate), PBT, is the next member of the homologous series of polyterephthalates with its thermodynamic properties listed in Fig. 6.40. Figine 6.45 presents the crystallinity for a semicrystalline, melt-crystallized PBT sample, calculated with the method of Fig. 4.80, Eq. (3). Below the glass transition, the crystallinity reaches 36.2%. With this crystallinity function, the expected heat capacity without latent heat effects is given in Fig. 6.46. 

Gao, H. J., Xue, Z. Q., and Pang, S. J., Fabrication of crystalline functional polymer thin films using an ionized cluster beam deposition method. Thin Solid Films, 292, 40-42 (1997). 

In Section III, liquid crystalline polyacetylene derivatives that have recently been developed will be reviewed as new types of conducting polymers with liquid crystalline functions in the side chain [1-9]. 

I. M. Saez and J. W. Goodby, in Liquid Crystalline Functional Assemblies and their Supramolecular Structures, Structure and Bonding Series, eds. D. M. P. Mingos and T. Kato, SpringOT-Verlag, Berlin Heidelberg, 2008, Vol. 128, pp. 1-62. 

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