Enhancing Intracellular Optical Performance and Stability of Engineered Nanomaterials via Aqueous Two-Phase Purification.
Enhancing Intracellular Optical Performance and Stability of Engineered Nanomaterials via Aqueous Two-Phase Purification.
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通过水相两相纯化增强工程纳米材料的细胞内光学性能和稳定性。
DOI:
10.1021/acs.nanolett.3c01727
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发表时间:
2023
期刊:
影响因子:
10.8
通讯作者:
Roxbury,Daniel
中科院分区:
文献类型:
--
作者:
Nadeem,Aceer;Kindopp,Aidan;Wyllie,Ian;Hubert,Lauren;Joubert,James;Lucente,Sophie;Randall,Ewelina;Jena,PrakritV;Roxbury,Daniel
Supramolecular hybrids of DNA and single-walled carbon nanotubes (SWCNTs) have been introduced in numerous biosensing applications due to their unique optical properties. Recent aqueous two-phase (ATP) purification methods for SWCNTs have gained popularity by introducing specificity and homogeneity into the sensor design process. Using murine macrophages probed by near-infrared and Raman microscopies, we show that ATP purification increases the retention time of DNA-SWCNTs within cells while simultaneously enhancing the optical performance and stability of the engineered nanomaterial. Over a period of 6 h, we observe 45% brighter fluorescence intensity and no significant change in emission wavelength of ATP-purified DNA-SWCNTs relative to as-dispersed SWCNTs. These findings provide strong evidence of how cells differentially process engineered nanomaterials depending on their state of purification, lending to the future development of more robust and sensitive biosensors with desirablein vivooptical parameters using surfactant-based ATP systems with a subsequent exchange to biocompatible functionalization.
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