(part of Steps Toward Molecular Manufacturing)
- functional group classification:
The functional groups on MBBs will have
to be of two different categories, the link-forming and the
decorational types. One reason why it is advantageous to make this
distinction is because "ordinary" decorational functional groups like
hydroxyl-, amino-, or carboxylic acid-groups do not supply any special
provision for bond-forming chemistry of the type which is needed
here. The desirable chemistry will be further discussed below. The
other reason has to do with the nature of rastered geometry to which
one should adhere. If a regular lattice is made up of MBBs all having
the same skeleton structure, then always the same functionalization
sites on the skeletons will be consumed by the attached links. But
aside from these link-forming functionalities, one will want to have
additional functional groups that are freely assignable and placeable
for decorational purposes, like for participation in a receptor site.
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last updated Oct. 5 1996
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