Poly-y-benzyl-L-glutamates

Polymer Solutions. Perhaps the most extensively studied macromolecular Hquid crystals are the synthetic polypeptides, such as poly( y-benzyl L-glutamate) [25513-40-0] (PBLG). PBLG is a homopolymer of the L-enantiomorph of a single amino acid with the foUowiag repeat unit. 

Block, H., Poly(Y-benzyl-L-glutamate) and Other Glutamic Acid Containing Polymers. Gordon and Breach, New York, 1983,... 

Upadhyay KK, Bhatt AN, Mishra AK, Dwarakanath BS, Jain S, Schatz C, Le Meins JE, Earooque A, Chandraiah G, Jain AK, Misra A, Lecommandoux S (2010) The intracellular drug delivery and anti tumor activity of doxorubicin loaded poly(y-benzyl L-glutamate)-b-hyaluronan polymersomes. Biomaterials 31(10) 2882... 

For aprotic polar organic solvents only few widely applicable alignment media are known. The lyotropic mesophase of poly(y-benzyl-L-glutamate) (PBLG) with DMF [37] has the disadvantage of a relatively strong minimum alignment. Bicellar... 

Panar, M., Phillips, W. D. Magnetic ordering of poly-y-benzyl-L-glutamate solutions. /. Am. Chem. Soc. 1968, 90, 3880-3882. 

Local Dynamics in Polypeptides Studied by Solid State 2H NMR Side Chain Dynamics of Poly(Y-benzyl L-glutamate) and Racemic Poly(Y-benzyl glutamate)... 

Fig. 7. Comparison of experimental phase boundary concentrations between the isotropic and biphasic regions for various liquid-crystalline polymer solutions with the scaled particle theory for wormlike hard spherocylinders. ( ) schizophyllan water [65] (A) poly y-benzyl L-glutamate) (PBLG)-dimethylformamide (DMF) [66-69] (A) PBLG-m-cresoI [70] ( ) PBLG-dioxane [71] (O) PBLG-methylene chloride [71] (o) po y(n-hexyl isocyanate) (PHICH°Iuene at 10,25,30,40 °C [64] (O) PHIC-dichloromethane (DCM) at 20 °C [64] (5) a po y(yne)-platinum polymer (PYPt)-tuchIoroethane (TCE) [33] ( ) (hydroxypropyl)-cellulose (HPC)-water [34] ( ) HPC-dimethylacetamide (DMAc) [34] (N) (acetoxypropyl) cellulose (APC)-dibutylphthalate (DBP) [35] ( ) cellulose triacetate (CTA)-trifluoroacetic acid [72]...

Saito,K., Kaneko,M., Furuichi,J. Dielectric dispersion of poly-y-benzyl L-glutamate. J. Phys. Soc. Japan 19,577 (1964). 

Konaga,T., Fukada,E. Piezoelectric effect in oriented films of poly-y-benzyl L-glutamate. Rep. Progr. Polymer Phys. Japan 13, 379 (1970). 

Saba,R.G., Sauer,J. A., Woodward,A.E. Dynamic shear behavior of poly (y-benzyl L-glutamate), poly(D, L-propylene oxide), and polyfethyl vinyl ether). J. Polymer Sd. A1, 1483 (1963). 

In fact, for random-coil conformations, b in Equation 41 is explicitly related to the exponent in the Mark-Houwink equation by 3b = a 1. In this way values of M may be determined directly from measurements of D° provided KD and b are known. Although both these parameters could in principle be calculated from a detailed knowledge of the geometry of the solute, it is usual to regard them as experimentally determinable parameters. A similar relationship has also been found to hold true for the polypeptide poly(y-benzyl L-glutamate) (PBLG) dissolved both in 1,2-dichloroethane and in dichloroacetic acid. These results are shown in Figures 6 and 7, respectively. 

Fig. 8. Poly-y-benzyl-L-glutamates from polymerizations in dioxane solution with n-hexyiamine initiator, A with sodium hydroxide initiator, B degree of polymerization (D. P.) as a function of anhydride-initiator ratio (A/X). The molecular weights were obtained from reduced specific viscosities at concentrations of 0.2% in dichloroacetic acid. [Reprinted from paper by E. R. Blout and R. H Karlson J. Am. Chero. Soc. 78...

---