Os(II/III) complex supports pH-insensitive electrochemical DNA-based sensing with superior operational stability than the benchmark methylene blue reporter.

Os(II/III) complex supports pH-insensitive electrochemical DNA-based sensing with superior operational stability than the benchmark methylene blue reporter.
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OS(II/III)复合物比基准甲基蓝蓝色报告基因相比,基于pH不敏感的电化学DNA感应具有出色的操作稳定性。

DOI:
10.1039/d2an01901a
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发表时间:
2023-02-13
期刊:
影响因子:
4.2
通讯作者:
Arroyo-Curras, Netzahualcoyotl
Arroyo-Curras, Netzahualcoyotl
中科院分区:
化学2区
文献类型:
--
作者:
Pellitero, Miguel Aller;Kundu, Nandini;Sczepanski, Jonathan;Arroyo-Curras, Netzahualcoyotl

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基于dna的电化学传感器使用氧化还原报告器将亲和事件转化为电流。理想情况下,这种报告细胞必须是电化学可逆的,在数千个氧化还原循环中化学稳定,并且能够耐受不断变化的化学环境。在这里,我们报告了在基于dna的传感器中首次使用Os(ii/iii)复合物,它经历了pH不敏感的电子转移,相对于基准亚甲基蓝,其操作稳定性提高了35%,使其成为pH随时间波动的连续分子监测应用的有希望的报告。本研究报道了一种基于锇的氧化还原报告,它能够实现ph不敏感和快速的基于dna的分子传感,为短期动态分子事件的研究提供了新的可能性。
DNA-based electrochemical sensors use redox reporters to transduce affinity events into electrical currents. Ideally, such reporters must be electrochemically reversible, chemically stable for thousands of redox cycles, and tolerant to changing chemical environments. Here we report the first use of an Os(ii/iii) complex in DNA-based sensors, which undergoes pH-insensitive electron transfer with 35% better operational stability relative to the benchmark methylene blue, making it a promising reporter for continuous molecular monitoring applications where pH fluctuates with time. This study reports an osmium-based redox reporter that enables pH-insensitive and fast DNA-based molecular sensing, offering new possibilities for the study of short-lived dynamic molecular events.
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