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. 2023 May 21;13(10):1689. doi: 10.3390/nano13101689

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© 2023 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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(a) Zero values of the first derivatives of emission spectra as a function of concentration of 4-NP (μΜ). Inset: linear range at concentrations between 2.5 and 45 μM and (b) ratio of PL intensity-to-emission red shift (nm) at different concentrations of 4-NP, using HL-CNDs (λ_ex = 330 nm). Error bars represent the standard deviation of three replicates.

(a) Zero values of the first derivatives of emission spectra as a function of concentration of 4-NP (μΜ). Inset: linear range at concentrations between 2.5 and 45 μM and (b) ratio of PL intensity-to-emission red shift (nm) at different concentrations of 4-NP, using HL-CNDs (λ_ex = 330 nm). Error bars represent the standard deviation of three replicates.