Functional Dyes, and Some Hi-Tech Applications

<table>Excitation and emission spectra of dye <b>3a</b> (<svg height="14.4625" id="M52" style="vertical-align:-0.3135pt" version="1.1" viewbox="0 0 54.099998 14.4625" width="54.099998" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.4625)">
<g transform="translate(72,-60.43)">
<text transform="matrix(1,0,0,-1,-71.95,60.79)">
<tspan style="font-size: 12.50px; " x="0" y="0">5</tspan>
<tspan style="font-size: 12.50px; " x="9.0271664" y="0">×</tspan>
<tspan style="font-size: 12.50px; " x="19.804752" y="0">1</tspan>
<tspan style="font-size: 12.50px; " x="26.056252" y="0">0</tspan>
</text>
<text transform="matrix(1,0,0,-1,-39.64,65.96)">
<tspan style="font-size: 8.75px; " x="0" y="0">−</tspan>
<tspan style="font-size: 8.75px; " x="5.99512" y="0">6</tspan>
</text>
</g>
</g>
</svg>M, <svg height="14.9" id="M53" style="vertical-align:-3.22281pt" version="1.1" viewbox="0 0 84.712502 14.9" width="84.712502" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.9)">
<g transform="translate(72,-60.08)">
<text transform="matrix(1,0,0,-1,-71.95,63.35)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝜆</tspan>
</text>
<text transform="matrix(1,0,0,-1,-65.19,60.22)">
<tspan style="font-size: 8.75px; " x="0" y="0">e</tspan>
<tspan style="font-size: 8.75px; " x="3.7108481" y="0">x</tspan>
</text>
<text transform="matrix(1,0,0,-1,-53.14,63.35)">
<tspan style="font-size: 12.50px; " x="0" y="0">=</tspan>
<tspan style="font-size: 12.50px; " x="12.040389" y="0">5</tspan>
<tspan style="font-size: 12.50px; " x="18.291889" y="0">5</tspan>
<tspan style="font-size: 12.50px; " x="24.543388" y="0">0</tspan>
<tspan style="font-size: 12.50px; " x="32.870388" y="0">n</tspan>
<tspan style="font-size: 12.50px; " x="39.121887" y="0">m</tspan>
</text>
</g>
</g>
</svg> and <svg height="14.9" id="M54" style="vertical-align:-3.22281pt" version="1.1" viewbox="0 0 87.987503 14.9" width="87.987503" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.9)">
<g transform="translate(72,-60.08)">
<text transform="matrix(1,0,0,-1,-71.95,63.35)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝜆</tspan>
</text>
<text transform="matrix(1,0,0,-1,-65.19,60.22)">
<tspan style="font-size: 8.75px; " x="0" y="0">e</tspan>
<tspan style="font-size: 8.75px; " x="3.8858881" y="0">m</tspan>
</text>
<text transform="matrix(1,0,0,-1,-50.52,63.35)">
<tspan style="font-size: 12.50px; " x="0" y="0">=</tspan>
<tspan style="font-size: 12.50px; " x="12.027886" y="0">5</tspan>
<tspan style="font-size: 12.50px; " x="18.279387" y="0">6</tspan>
<tspan style="font-size: 12.50px; " x="24.530886" y="0">9</tspan>
<tspan style="font-size: 12.50px; " x="32.870388" y="0">n</tspan>
<tspan style="font-size: 12.50px; " x="39.121887" y="0">m</tspan>
</text>
</g>
</g>
</svg>) in aqueous buffer solutions at <svg height="11.225" id="M55" style="vertical-align:-0.17555pt" version="1.1" viewbox="0 0 30.625 11.225" width="30.625" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,11.225)">
<g transform="translate(72,-63.02)">
<text transform="matrix(1,0,0,-1,-71.95,63.24)">
<tspan style="font-size: 12.50px; " x="0" y="0">2</tspan>
<tspan style="font-size: 12.50px; " x="6.2515001" y="0">5</tspan>
</text>
<text transform="matrix(1,0,0,-1,-59.45,68.56)">
<tspan style="font-size: 8.75px; " x="0" y="0">∘</tspan>
</text>
<text transform="matrix(1,0,0,-1,-55.89,63.24)">
<tspan style="font-size: 12.50px; " x="0" y="0">C</tspan>
</text>
</g>
</g>
</svg> as a function of pH.</table>

International Journal of Photoenergy

Functional Dyes, and Some Hi-Tech Applications

Figure 24