Turn-On Fluorescence Detection of Glutathione Based on <i>o</i>-Phthaldialdehyde-Assisted SiO<sub>2</sub> Particles

<div>(a) Emission spectra of SiO<sub>2</sub>-SH-OPA particles in the absence (blank) and presence of GSH. (b) Influence of pH on SiO<sub>2</sub>-SH-OPA FP. (c) Influence of the quantity of SiO<sub>2</sub>-SH-OPA particles. (d) Response time. Experimental conditions: (GSH) = 5.0 × 10<sup>−8</sup>–1.0 × 10<sup>−5</sup> mol/L; <span class="nowrap"><svg height="12.584005pt" id="M9" style="vertical-align:-3.295671pt" version="1.1" viewbox="-0.049816 -9.288335 119.880648 12.584005" width="119.880648pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M529 97L508 118C475 75 449 58 438 58C428 58 421 66 415 104C393 234 374 403 364 496C345 670 307 712 254 712C220 712 174 691 153 669L161 645C176 653 194 658 206 658C237 658 261 640 278 562C287 522 290 483 293 434C223 269 110 105 23 9L32 -12C59 -6 85 0 108 7C152 64 251 252 300 366C307 297 315 221 337 82C346 24 363 -12 393 -12C425 -12 475 13 529 97Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,7.79,3.132)"><path d="M384 109C349 76 310 59 268 59C197 59 123 113 120 245C240 248 367 259 384 262C403 266 407 275 407 296C407 376 338 451 254 451H253C201 451 148 425 105 378C65 334 39 272 39 203C39 88 112 -12 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Journal of Sensors

fig4

Figure 4

Figure 4: Turn-On Fluorescence Detection of Glutathione Based on <i>o</i>-Phthaldialdehyde-Assisted SiO<sub>2</sub> Particles 

Journal of Sensors

Turn-On Fluorescence Detection of Glutathione Based on o-Phthaldialdehyde-Assisted SiO2 Particles

Figure 4

Turn-On Fluorescence Detection of Glutathione Based on o-Phthaldialdehyde-Assisted SiO₂ Particles