Logical Regulations of the Aggregation/Dispersion of Gold Nanoparticles via Programmed Chemical Interactions

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• 作者：Yulin Li ; Xiaogang Han ; Zhaoxiang Deng
• 刊名：Langmuir
• 出版年：2011
• 出版时间：August 16, 2011
• 年：2011
• 卷：27
• 期：16
• 页码：9666-9670
• 全文大小：856K
• 年卷期：v.27,no.16(August 16, 2011)
• ISSN：1520-5827

文摘

Nanoparticles that respond to various chemical and physical stimuli form the basis for various conceivable applications including sensors, chemical logic, biomedical imaging, and therapies. In this work, we demonstrate that the electrostatic and chemical (complexing and gold鈥搕hiol bonding) interactions existing in a gold nanoparticle/Zn²⁺/dithiothreitol-based ternary chemical system is 鈥減rogrammable鈥?and can be utilized to regulate the aggregation and dispersion of nanoparticles via XOR and INHIBIT logics. The resulting solutions alter their colors according to different input combinations because of the well-controlled aggregation or dispersion of plasmonic gold nanoparticles, opening up new possibilities for the developments of advanced sensors and nanobiomedical devices based on the coupling, gating, and signaling of different chemical stimuli.