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Reaction scheme of the controlled assembly of multicomponent nChain particles using solid-phase chemistry. (a) In the first step, chemical bifunctionality on the surface of parent IO nanospheres is topologically controlled resulting in nanospheres with two faces, one displaying only amines and the other only thiols. (b) In the second step, the two unique faces on the parent nanosphere serve as fittings to chemically assemble them into nanochains.
