Positively charged polysilsesquioxane/iodide lonic liquid as a quasi solid-state redox electrolyte for dye-sensitized photo electrochemical cells: infrared, <mml:math alttext="$^{{ext{29}}} {ext{Si}}$"> <mml:mrow> <mml:msup> <mml:mi></mml:mi> <mml:mrow> <mml:mtext>29</mml:mtext> </mml:mrow> </mml:msup> <mml:mtext>Si</mml:mtext> </mml:mrow> </mml:math> NMR, and electrical studies
<p>A new sol-gel precursor based on 1-methyl-3-[3-(trimethoxy-<mml:math alttext="$lambda^4$"> <mml:mrow> <mml:msup> <mml:mi>λ</mml:mi> <mml:mn>4</mml:mn> </mml:msup> </mml:mrow> </mml:math>-silyl...
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| Format: | Article |
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| Language: | English |
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Wiley
2006-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://www.hindawi.com/GetArticle.aspx?doi=10.1155/IJP/2006/23703 |
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| description | <p>A new sol-gel precursor based on 1-methyl-3-[3-(trimethoxy-<mml:math alttext="$lambda^4$"> <mml:mrow> <mml:msup> <mml:mi>λ</mml:mi> <mml:mn>4</mml:mn> </mml:msup> </mml:mrow> </mml:math>-silyl)propyl]-1<mml:math alttext="$H$"> <mml:mi>H</mml:mi> </mml:math>-imidazolium iodide (MTMSPI<mml:math alttext="$^+I^-$"> <mml:mrow> <mml:msup> <mml:mi></mml:mi> <mml:mtext>+</mml:mtext> </mml:msup> <mml:msup> <mml:mtext>I</mml:mtext> <mml:mo>−</mml:mo> </mml:msup> </mml:mrow> </mml:math>) was synthesized and investigated as a potential novel quasi solid-state ionic liquid redox electrolyte for dye-synthesized photoelectrochemical (DSPEC) cells of the Graetzel type. MTMSPI<mml:math alttext="$^+I^-$"> <mml:mrow> <mml:msup> <mml:mi></mml:mi> <mml:mtext>+</mml:mtext> </mml:msup> <mml:msup> <mml:mtext>I</mml:mtext> <mml:mo>−</mml:mo> </mml:msup> </mml:mrow> </mml:math> was hydrolyzed with acidified water and the reaction products of the sol-gel condensation reactions assessed with the help of <mml:math alttext="$^{{ext{29}}} {ext{Si}}$"> <mml:mrow> <mml:msup> <mml:mi></mml:mi> <mml:mrow> <mml:mtext>29</mml:mtext> </mml:mrow> </mml:msup> <mml:mtext>Si</mml:mtext> </mml:mrow> </mml:math> NMR and infrared spectroscopic techniques. Results of the time-dependent spectra analyses showed the formation of positively charged polyhedral cube-like silsesquioxane species that still contained a small amount of silanol end groups, which were removed after heating at <mml:math alttext="$200un{^{circ} C}$"> <mml:mrow> <mml:mn>200</mml:mn><mml:msup> <mml:mtext></mml:mtext> <mml:mo>°</mml:mo> </mml:msup> <mml:mtext>C</mml:mtext> </mml:mrow> </mml:math>. After cooling, the resulting material formed is a tough, yellowish, and transparent solid, which could be reheated again and used for assembling DSPEC cells. The addition of iodine increased the specific conductivity of the hydrolyzed and nonhydrolyzed MTMSPI<mml:math alttext="$^+I^-$"> <mml:mrow> <mml:msup> <mml:mi></mml:mi> <mml:mtext>+</mml:mtext> </mml:msup> <mml:msup> <mml:mtext>I</mml:mtext> <mml:mo>−</mml:mo> </mml:msup> </mml:mrow> </mml:math>, which we attributed to the formation of triiodide ions contributed to the conductivity via the Grotthus mechanism. DSPEC cells based on a titania-dye system with MTMSPI<mml:math alttext="$^+I^-$"> <mml:mrow> <mml:msup> <mml:mi></mml:mi> <mml:mtext>+</mml:mtext> </mml:msup> <mml:msup> <mml:mtext>I</mml:mtext> <mml:mo>−</mml:mo> </mml:msup> </mml:mrow> </mml:math> electrolyte containing iodine (0.1 M) reached an overall efficiency between 3.3–3.7%.</p> |
| format | Article |
| id | doaj-art-541ceb7a342641ddbf971461f38923f9 |
| institution | Kabale University |
| issn | 1110-662X |
| language | English |
| publishDate | 2006-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-541ceb7a342641ddbf971461f38923f92025-02-03T01:27:18ZengWileyInternational Journal of Photoenergy1110-662X2006-01-012006Positively charged polysilsesquioxane/iodide lonic liquid as a quasi solid-state redox electrolyte for dye-sensitized photo electrochemical cells: infrared, <mml:math alttext="$^{{ext{29}}} {ext{Si}}$"> <mml:mrow> <mml:msup> <mml:mi></mml:mi> <mml:mrow> <mml:mtext>29</mml:mtext> </mml:mrow> </mml:msup> <mml:mtext>Si</mml:mtext> </mml:mrow> </mml:math> NMR, and electrical studies<p>A new sol-gel precursor based on 1-methyl-3-[3-(trimethoxy-<mml:math alttext="$lambda^4$"> <mml:mrow> <mml:msup> <mml:mi>λ</mml:mi> <mml:mn>4</mml:mn> </mml:msup> </mml:mrow> </mml:math>-silyl)propyl]-1<mml:math alttext="$H$"> <mml:mi>H</mml:mi> </mml:math>-imidazolium iodide (MTMSPI<mml:math alttext="$^+I^-$"> <mml:mrow> <mml:msup> <mml:mi></mml:mi> <mml:mtext>+</mml:mtext> </mml:msup> <mml:msup> <mml:mtext>I</mml:mtext> <mml:mo>−</mml:mo> </mml:msup> </mml:mrow> </mml:math>) was synthesized and investigated as a potential novel quasi solid-state ionic liquid redox electrolyte for dye-synthesized photoelectrochemical (DSPEC) cells of the Graetzel type. MTMSPI<mml:math alttext="$^+I^-$"> <mml:mrow> <mml:msup> <mml:mi></mml:mi> <mml:mtext>+</mml:mtext> </mml:msup> <mml:msup> <mml:mtext>I</mml:mtext> <mml:mo>−</mml:mo> </mml:msup> </mml:mrow> </mml:math> was hydrolyzed with acidified water and the reaction products of the sol-gel condensation reactions assessed with the help of <mml:math alttext="$^{{ext{29}}} {ext{Si}}$"> <mml:mrow> <mml:msup> <mml:mi></mml:mi> <mml:mrow> <mml:mtext>29</mml:mtext> </mml:mrow> </mml:msup> <mml:mtext>Si</mml:mtext> </mml:mrow> </mml:math> NMR and infrared spectroscopic techniques. Results of the time-dependent spectra analyses showed the formation of positively charged polyhedral cube-like silsesquioxane species that still contained a small amount of silanol end groups, which were removed after heating at <mml:math alttext="$200un{^{circ} C}$"> <mml:mrow> <mml:mn>200</mml:mn><mml:msup> <mml:mtext></mml:mtext> <mml:mo>°</mml:mo> </mml:msup> <mml:mtext>C</mml:mtext> </mml:mrow> </mml:math>. After cooling, the resulting material formed is a tough, yellowish, and transparent solid, which could be reheated again and used for assembling DSPEC cells. The addition of iodine increased the specific conductivity of the hydrolyzed and nonhydrolyzed MTMSPI<mml:math alttext="$^+I^-$"> <mml:mrow> <mml:msup> <mml:mi></mml:mi> <mml:mtext>+</mml:mtext> </mml:msup> <mml:msup> <mml:mtext>I</mml:mtext> <mml:mo>−</mml:mo> </mml:msup> </mml:mrow> </mml:math>, which we attributed to the formation of triiodide ions contributed to the conductivity via the Grotthus mechanism. DSPEC cells based on a titania-dye system with MTMSPI<mml:math alttext="$^+I^-$"> <mml:mrow> <mml:msup> <mml:mi></mml:mi> <mml:mtext>+</mml:mtext> </mml:msup> <mml:msup> <mml:mtext>I</mml:mtext> <mml:mo>−</mml:mo> </mml:msup> </mml:mrow> </mml:math> electrolyte containing iodine (0.1 M) reached an overall efficiency between 3.3–3.7%.</p>http://www.hindawi.com/GetArticle.aspx?doi=10.1155/IJP/2006/23703 |
| spellingShingle | Positively charged polysilsesquioxane/iodide lonic liquid as a quasi solid-state redox electrolyte for dye-sensitized photo electrochemical cells: infrared, <mml:math alttext="$^{{ext{29}}} {ext{Si}}$"> <mml:mrow> <mml:msup> <mml:mi></mml:mi> <mml:mrow> <mml:mtext>29</mml:mtext> </mml:mrow> </mml:msup> <mml:mtext>Si</mml:mtext> </mml:mrow> </mml:math> NMR, and electrical studies International Journal of Photoenergy |
| title | Positively charged polysilsesquioxane/iodide lonic liquid as a quasi solid-state redox electrolyte for dye-sensitized photo electrochemical cells: infrared, <mml:math alttext="$^{{ext{29}}} {ext{Si}}$"> <mml:mrow> <mml:msup> <mml:mi></mml:mi> <mml:mrow> <mml:mtext>29</mml:mtext> </mml:mrow> </mml:msup> <mml:mtext>Si</mml:mtext> </mml:mrow> </mml:math> NMR, and electrical studies |
| title_full | Positively charged polysilsesquioxane/iodide lonic liquid as a quasi solid-state redox electrolyte for dye-sensitized photo electrochemical cells: infrared, <mml:math alttext="$^{{ext{29}}} {ext{Si}}$"> <mml:mrow> <mml:msup> <mml:mi></mml:mi> <mml:mrow> <mml:mtext>29</mml:mtext> </mml:mrow> </mml:msup> <mml:mtext>Si</mml:mtext> </mml:mrow> </mml:math> NMR, and electrical studies |
| title_fullStr | Positively charged polysilsesquioxane/iodide lonic liquid as a quasi solid-state redox electrolyte for dye-sensitized photo electrochemical cells: infrared, <mml:math alttext="$^{{ext{29}}} {ext{Si}}$"> <mml:mrow> <mml:msup> <mml:mi></mml:mi> <mml:mrow> <mml:mtext>29</mml:mtext> </mml:mrow> </mml:msup> <mml:mtext>Si</mml:mtext> </mml:mrow> </mml:math> NMR, and electrical studies |
| title_full_unstemmed | Positively charged polysilsesquioxane/iodide lonic liquid as a quasi solid-state redox electrolyte for dye-sensitized photo electrochemical cells: infrared, <mml:math alttext="$^{{ext{29}}} {ext{Si}}$"> <mml:mrow> <mml:msup> <mml:mi></mml:mi> <mml:mrow> <mml:mtext>29</mml:mtext> </mml:mrow> </mml:msup> <mml:mtext>Si</mml:mtext> </mml:mrow> </mml:math> NMR, and electrical studies |
| title_short | Positively charged polysilsesquioxane/iodide lonic liquid as a quasi solid-state redox electrolyte for dye-sensitized photo electrochemical cells: infrared, <mml:math alttext="$^{{ext{29}}} {ext{Si}}$"> <mml:mrow> <mml:msup> <mml:mi></mml:mi> <mml:mrow> <mml:mtext>29</mml:mtext> </mml:mrow> </mml:msup> <mml:mtext>Si</mml:mtext> </mml:mrow> </mml:math> NMR, and electrical studies |
| title_sort | positively charged polysilsesquioxane iodide lonic liquid as a quasi solid state redox electrolyte for dye sensitized photo electrochemical cells infrared mml math alttext ext 29 ext si mml mrow mml msup mml mi mml mi mml mrow mml mtext 29 mml mtext mml mrow mml msup mml mtext si mml mtext mml mrow mml math nmr and electrical studies |
| url | http://www.hindawi.com/GetArticle.aspx?doi=10.1155/IJP/2006/23703 |