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- W2020777766 abstract "Controlled assembly of nanomaterials has been the focus of much research. In contrast, controlled disassembly has not received much attention, even though both processes have been shown to be important in biology. By using a Pb2+-dependent RNA-cleaving DNAzyme, we demonstrate here control of the disassembly of gold nanoparticle aggregates in response to Pb2+. In the process, we show that nanoparticle alignment plays an important role in the disassembly process, with the tail-to-tail configuration being the most optimal, probably because of the large steric hindrance of other configurations. The rate of disassembly is significantly accelerated by using small pieces of DNA to invade the cleaved substrate of the DNAzyme. Investigation of such a controlled disassembly process allows the transformation of previously designed “light-down” colorimetric Pb2+ sensors into “light-up” sensors." @default.
- W2020777766 created "2016-06-24" @default.
- W2020777766 creator A5030686904 @default.
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- W2020777766 date "2005-08-17" @default.
- W2020777766 modified "2023-10-11" @default.
- W2020777766 title "Stimuli-Responsive Disassembly of Nanoparticle Aggregates for Light-Up Colorimetric Sensing" @default.
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- W2020777766 doi "https://doi.org/10.1021/ja053567u" @default.
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