Morphology nanoplates

Clear relationship - Low Mw chitosan 2D chains between - Medium molecular weight chitosan single nanoparticles morphology and - High molecular weight chitosan nanoplates molecular weight... 

To maximize fluorophore excitation and increase the fluorescence quantum yield, the spectral properties of the metal nanoparticles need to be optimized. While spherical colloidal nanoparticles of noble metals have been well known for many years, it is only recently that there has been an explosion of reports on the preparation and properties of anisotropically-shaped materials. As will be discussed in the following sections, a wide range of morphologies can be produced, including triangular nanoplates (nanoprisms), cubes, octahedra, nanowires, nanorods and bi-pyramids. The last few years have also seen major developments in our understanding of the growth processes involved, so that now it is possible to prepare many types of shaped p>articles in a controlled fashion. 

In this category, the shapes that cannot be explained by the selective binding model tend to maximize the surface area of the most stable 111 crystal face. In most cases this simply involves a reverse of the growth anisotropy that is observed with the selective binding model. In the case of nanoprisms (and nanoplates), flat 111 faces are favoured but there is clearly another factor at work giving rise to the typical flat morphology of these nanostructures. 

Rath T, Li Y (2011) Nanocomposites based on polystyrene-b-poly(ethylene-r-butylene)-b-polystyrene and exfoliated graphite nanoplates effect of nanoplatelet loading on morphology and mechanical properties. Compos A Appl Sci Manuf 42(12) 1995-2002 Rinaldi R, Schiith F (2009) Acid hydrolysis of cellulose as the entry point into biorefinery schemes. ChemSusChem 2(12) 1096-1107... 

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