Table 1 Parameters from curve fitting of drug release in different pH.

From: Construction of pH-responsive and up-conversion luminescent NaYF4:Yb3+/Er3+@SiO2@PMAA nanocomposite for colon targeted drug delivery

pH

n

K

R2

1.2

0.65 ± 0.04

12.24 ± 0.57

0.99

7.4

0.56 ± 0.04

20.94 ± 1.01

0.98

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