Abstract
AbstractDespite the widespread use of quantum dots (QDs) for biosensing and bioimaging, QD‐based bio‐interfaceable and reconfigurable molecular computing systems have not yet been realized. DNA‐programmed dynamic assembly of multi‐color QDs is presented for the construction of a new class of fluorescence resonance energy transfer (FRET)‐based QD computing systems. A complete set of seven elementary logic gates (OR, AND, NOR, NAND, INH, XOR, XNOR) are realized using a series of binary and ternary QD complexes operated by strand displacement reactions. The integration of different logic gates into a half‐adder circuit for molecular computation is also demonstrated. This strategy is quite versatile and straightforward for logical operations and would pave the way for QD‐biocomputing‐based intelligent molecular diagnostics.
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