Effects of Core and/or Peripheral Protonation of <i>meso</i>-Tetra(2-, 3-, and 4-pyridyl)Porphyrin and <i>meso</i>-Tetra(3-methylpyridyl)Porphyrin on Their UV-vis Spectra

<table>A possible through space interaction between the porphyrin <svg height="11.975" id="M43" style="vertical-align:-3.39069pt" version="1.1" viewbox="0 0 20.237499 11.975" width="20.237499" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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<g transform="matrix(.012,-0,0,-.012,7.287,11.775)"><path d="M384 0h-275v27q67 5 81.5 18.5t14.5 68.5v385q0 38 -7.5 47.5t-40.5 10.5l-48 2v24q85 15 178 52v-521q0 -55 14.5 -68.5t82.5 -18.5v-27z" id="x31"></path></g>
<g transform="matrix(.012,-0,0,-.012,13,11.775)"><path d="M463 437l5 -8q-21 -38 -45 -51l-57 3q30 -35 30 -88q0 -76 -52.5 -118t-122.5 -42q-24 0 -51 5q-30 -21 -30 -42q0 -16 16 -27t47 -11q19 0 54 0.5t52 0.5q36 0 65.5 -8t53.5 -36t24 -74q0 -77 -75 -137.5t-174 -60.5q-79 0 -126 37.5t-48 84.5q0 32 24 56q21 21 83 70
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</svg> orbitals of the aryl group [<a href="/journals/jspec/2013/713745/#B8">8</a>].</table>

Journal of Spectroscopy

fig4

Figure 4

Figure 4: Effects of Core and/or Peripheral Protonation of <i>meso</i>-Tetra(2-, 3-, and 4-pyridyl)Porphyrin and <i>meso</i>-Tetra(3-methylpyridyl)Porphyrin on Their UV-vis Spectra 

Figure 4 | Effects of Core and/or Peripheral Protonation of meso-Tetra(2-, 3-, and 4-pyridyl)Porphyrin and meso-Tetra(3-methylpyridyl)Porphyrin on Their UV-vis Spectra 