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Fabrication scheme for polymer-caged nanobin (PCN) via a modular drop-in strategy. The alkyne-containing diamine cross-linker is shown in the second step to illustrate how a PCN can be made with both surface terminal alkyne and carboxylic acid groups available for orthogonal modifications via click chemistry (see Figure 8 and the associated discussion below). However, simple diamine cross-linkers can be used.
