Effect of molecular structure

Effect of Molecular Structure on Polymer—Polymer Interactions... 

In the previous ehapter the various methods of synthesising polymers were briefly discussed. In this chapter the physical states of aggregation of these polymers will be considered, whilst in the three subsequent chapters the effect of molecular structure on the properties of polymers will be investigated. 

It is seen that by taking a mean value for the slope, there is very little divergence between the calculated and experimental values. Consequently, the methylene groups can, indeed, be taken as a reference group for assessing the effect of molecular structure on solute retention. The concept will now be applied to a simple n-alkanes series as discussed above, the data for which was obtained on the stationary phase n-heptadecane. 

Theoretical study of the effects of molecular structure and solvation on tautomeric equilibria (SCF-MO-PPP)... 

Much fewer experiments are available in solution where the few reported data are generally more concerned about the effect of molecular structure than about bond dissociation energy. In simple shear, it is generally agreed that chain flexibility dominantly influences the rate of bond scission, with the most rigid polymers being the easiest to fracture [157]. The results are interpreted in terms of the presence of good and poor sequences in the chain conformation. 

The theories that attempt to describe the initial event in sweet-taste stimulation will be discussed, as will some of the practical attempts to isolate sweet-receptor molecules. Relevant, behavioral data will be examined, particularly where the effects of molecular structure on behavior responses are being evaluated. 

Why is NaOH a strong base, HNO3 a strong acid, and CH3 OH neither Each of these compounds contains O-H bonds, yet their proton transfer properties are strikingly different. In this section we examine the effect of molecular structure on acid strength. 

Lu, W., Li, Y, Chan, M.C.W., Che, C.-M., Cheung, K.-K and Zhu, N. (2002) Organic triplet emissions of arylacetylide moieties harnessed through coordination to [Au(PCy3)]. Effect of molecular structure upon photoluminescent properties. Journal of the American Chemical Society, 124,14696-14706 (c) Lu, W., Zhu, N. and Che, C.M. (2003) Polymorphic forms of a gold(I) arylacetylide complex with contrasting phosphorescent characteristics. Journal of the American Chemical Society, 125, 16081—16088 ... 

Bahar, /., Erman, B, and Monnerie, L Effect of Molecular Structure on Local Chain Dynamics Analytical Approaches and Computational Methods. Vol. 116 pp. 145-206,... 

Perhaps no other pair of molecules exhibits the effect of molecular structure on reactivity like SF4 (sp3d orbitals) and SF6 (sp3d2 orbitals), whose structures are... 

Cho, H.-H., Park, J.-W., Liu, C.K. (2002) Effect of molecular structures on the solubility enhancement of hydrophobic organic compounds by environmental amphiphiles. Environ. Toxicol. Chem. 21, 999-1003. 

Working with less dilute solutions of elastomers one cannot fail to notice the influence (the stiffer the greater the effect) of molecular structure on the onset and course of non-Newtonion flow, on gelation and swelling, and the influence of the solvent as expressing itself by virial coefficients, molecular dimensions in solution, spinnability, and film forming. The sensitivity with which the tack of adhesives, demonstrated by pressure sensitive tapes which at that time reached the market, depends on the structure and composition of the elastomer was similarly striking and raised the question, which molecular structure or state was best suited to exhibit tacky adhesion, or adhesion per se. 

Wehry E. L. (1990) Effects of Molecular Structure on Fluorescence and Phosphorescence, in Guilbault G. G. (Ed.), Practiced Fluorescence, Marcel Dekker, New York, pp. 75-125. 

Han, C. D. and Lamonte, R. R. Studies on melt spinning I. Effect of molecular structure and molecular weight distribution on elongational viscosity, Trans. Soc. Rheol., 16, 447 (1972). 

Many [12,15] have tried to determine the effect of molecular structure on Ql. Generally the primary effect of molecular structure is seen in its effect on T (in SL) and a. 

M. G. Electron Multipliers in Mass Spectrometry Effect of Molecular Structure. Rev. Sci. lustrum. 1956, 27, 109. 

Rudnic, E.M., Kanig, J., and Rhodes, C.T., The effect of molecular structure on the function of sodium starch glycolate in wet granulated systems. Drug Dev. Ind Pharm., 9 303-320 (1983). 

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