Synthetic chemicals difference from NPs

Figure 4.2. The ring structures are more commonly found in two collections of NPs and in synthetic chemicals (from Man-Ling Lee and Schneider, 2001). Even the untutored eye can spot that there are some differences between the two collections hut what is the cause or significance of the...

OK so an individual chemical is the same irrespective of the route of synthesis but are synthetic chemicals as a group different from NPs as a group ... 

Try making a list of ail the different foods you have eaten in the past 24 hours and think of the challenges that you have given your biochemistry. Hundreds of NPs must have entered your system, most of which will be chemically unknown and of unknown toxicological consequence. Clearly, human experience has eliminated from the diet those foods that overburden the human body with harmful NPs. However, it is worth knowing that some plants (e.g., garlic) contains some very toxic NPs, chemicals that were they made synthetically, would not be allowed to be added to food. 

In this section, we will emphasize how the different chemical approaches allow control over the size, shape and assembly of Au NPs. The first subsection describes the most common synthetic approaches for the synthesis of gold nanoparticles, based on historically known methods from Faraday and Turkevitch. The surface chemistry of Au NPs, Au nano-bio hybrids synthesis and certain properties and applications of gold nanoparticles will be briefly summarized. 

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