AI Article Synopsis
- DNA-stabilized silver nanoclusters (DNA-AgNCs) are gaining attention for their potential in imaging and sensing applications, but their full spectroscopic properties are still under investigation.
- This study focused on the spectroscopic characteristics of red-emitting DNA-AgNCs across different pH levels (5 to 9) and ionic strengths (0.005 to 0.5), finding that purified samples maintained consistent photophysical properties apart from extreme conditions.
- The research also revealed that while non-purified DNA-AgNCs showed no significant changes with varying pH or ionic strength, there were notable differences in their rotational correlation times compared to purified samples.
Article Abstract
DNA-stabilized silver nanoclusters (DNA-AgNCs) are a class of promising fluorophores for imaging and sensing applications. All aspects of their spectroscopic properties are not yet fully characterized, leaving this field still with a number of fundamental studies to be addressed. In this work, we studied the spectroscopic properties of red-emitting DNA-AgNCs at different pH (5 to 9) and ionic strength μ (0.005 to 0.5). The photophysical properties of high performance liquid chromatography (HPLC) purified DNA-AgNCs proved to be constant over a large range of pH and μ, with absorption, emission and fluorescence decay times only being affected at very high pH and μ values. Non-purified DNA-AgNCs were also unaffected by pH and/or μ variations, but significant differences can be observed between the rotational correlation times of purified and non-purified DNA-AgNCs.
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| http://dx.doi.org/10.1088/2050-6120/ab47f2 | DOI Listing |
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