Sol-Gel Thin Films Immobilized with Bromocresol Purple pH-Sensitive Indicator in Presence of Surfactants

<table>Absorption spectra of immobilized BCP/SDS at pH 11–13.5: (a) <svg height="14.5875" id="M15" style="vertical-align:-3.22282pt" version="1.1" viewbox="0 0 31.6875 14.5875" width="31.6875" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.5875)">
<g transform="translate(72,-60.33)">
<text transform="matrix(1,0,0,-1,-71.95,63.6)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝜆</tspan>
</text>
<text transform="matrix(1,0,0,-1,-65.19,60.47)">
<tspan style="font-size: 8.75px; " x="0" y="0">m</tspan>
<tspan style="font-size: 8.75px; " x="6.8090558" y="0">a</tspan>
<tspan style="font-size: 8.75px; " x="10.694944" y="0">x</tspan>
</text>
</g>
</g>
</svg> = 435 nm, (b) <svg height="14.5875" id="M16" style="vertical-align:-3.22282pt" version="1.1" viewbox="0 0 31.6875 14.5875" width="31.6875" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.5875)">
<g transform="translate(72,-60.33)">
<text transform="matrix(1,0,0,-1,-71.95,63.6)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝜆</tspan>
</text>
<text transform="matrix(1,0,0,-1,-65.19,60.47)">
<tspan style="font-size: 8.75px; " x="0" y="0">m</tspan>
<tspan style="font-size: 8.75px; " x="6.8090558" y="0">a</tspan>
<tspan style="font-size: 8.75px; " x="10.694944" y="0">x</tspan>
</text>
</g>
</g>
</svg> = 595 nm.</table>

International Scholarly Research Notices

fig9

Figure 9

Figure 9: Sol-Gel Thin Films Immobilized with Bromocresol Purple pH-Sensitive Indicator in Presence of Surfactants 