Laser light scattering, LLS

Laser light scattering (LLS) s Intrinsic scattering intensities of carbohydrate-protein complex used to calculate stoichiometry... 

Figure 8. Molecular weight distribution of branched PVAc (B...) as determined by laser light scattering (LLS) and size exclusion chromatography (SEC)/viscometry. A comparison of results by the two methods is listed in Table 2.

Dynamic light scattering (DLS), also called photon correlation spectroscopy (PCS) or laser light scattering (LLS) is a technique based on the principle that moving objects cause a frequency shift due to the Doppler effect. If a solution of macromolecules with random Brownian motion is illuminated with monochromatic laser light, the scattered light should contain a distribution of frequencies about the incident frequency the spectral line is virtually broadened. The width of the distribution is related to the MMD. 

It should be emphasized that such formed chains are different from dendrimers. Previously, Hedrick et al. [8, 9] used this approach to synthesize hyperbranched chains, starting with short B A B oligomers containing 5-20 monomer units. Their resultant hyperbranched polymers are too small to be accurately characterized by laser light scattering (LLS), presumably because they used a relatively lower efficient esterification. 

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