Photocurrent Generation from Porphyrin/Fullerene Complexes Assembled in a Tethered Lipid Bilayer
A modular photocurrent generation system, based on amphiphilic porphyrin and fullerene species assembled in a tethered lipid bilayer matrix, is reported here. The key findings are (1) the amount of photoactive species can be quantitatively controlled in each leaflet of the bilayer and (2) the sequen...
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| Veröffentlicht in: | Langmuir 2010-10, Vol.26 (19), p.15671-15679 |
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| container_issue | 19 |
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| container_title | Langmuir |
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| creator | Zhan, Wei Jiang, Kai Smith, Matthew D Bostic, Heidi E Best, Michael D Auad, Maria L Ruppel, Joshua V Kim, Chungsik Zhang, X. Peter |
| description | A modular photocurrent generation system, based on amphiphilic porphyrin and fullerene species assembled in a tethered lipid bilayer matrix, is reported here. The key findings are (1) the amount of photoactive species can be quantitatively controlled in each leaflet of the bilayer and (2) the sequential formation of the bilayer allows a directional organization of these agents on electrodes. Photocurrent generation from seven differently configured photoactive bilayers is studied, which reveals several critical factors in achieving efficient photoinduced electron transfer across lipid membranes. Detailed fluorescence characterization is performed on porphyrin samples either in liposomes or surface-tethered bilayers; and the observed fluorescence quenching is correlated with photocurrents generated from the electrode-immobilized lipid films. The potential usefulness of this lipid-based approach is discussed in connection to several existing molecular photovoltaic systems. |
| doi_str_mv | 10.1021/la102884u |
| format | Article |
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Detailed fluorescence characterization is performed on porphyrin samples either in liposomes or surface-tethered bilayers; and the observed fluorescence quenching is correlated with photocurrents generated from the electrode-immobilized lipid films. 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Peter</creatorcontrib><title>Photocurrent Generation from Porphyrin/Fullerene Complexes Assembled in a Tethered Lipid Bilayer</title><title>Langmuir</title><addtitle>Langmuir</addtitle><description>A modular photocurrent generation system, based on amphiphilic porphyrin and fullerene species assembled in a tethered lipid bilayer matrix, is reported here. The key findings are (1) the amount of photoactive species can be quantitatively controlled in each leaflet of the bilayer and (2) the sequential formation of the bilayer allows a directional organization of these agents on electrodes. Photocurrent generation from seven differently configured photoactive bilayers is studied, which reveals several critical factors in achieving efficient photoinduced electron transfer across lipid membranes. Detailed fluorescence characterization is performed on porphyrin samples either in liposomes or surface-tethered bilayers; and the observed fluorescence quenching is correlated with photocurrents generated from the electrode-immobilized lipid films. The potential usefulness of this lipid-based approach is discussed in connection to several existing molecular photovoltaic systems.</description><subject>Chemistry</subject><subject>Colloidal state and disperse state</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Electrochemistry: Charge Transfer, Electrocatalysis, Kinetics, Bioelectrochemistry</subject><subject>Exact sciences and technology</subject><subject>Fullerenes and related materials; diamonds, graphite</subject><subject>General and physical chemistry</subject><subject>Materials science</subject><subject>Membranes</subject><subject>Physics</subject><subject>Specific materials</subject><issn>0743-7463</issn><issn>1520-5827</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNpt0L1OwzAUBWALgaD8DLwA8oIQQ6jt2Ik9QkULUiU6lDk4zo1q5MTBTiT69qSiwMJdzvLpXOkgdEnJHSWMTp0eQ0o-HKAJFYwkQrL8EE1IztMk51l6gk5jfCeEqJSrY3TCiEwp5XyC3lYb33szhABtjxfQQtC99S2ug2_wyodusw22nc4H52A0gGe-6Rx8QsT3MUJTOqiwbbHGa-g3I6nw0na2wg_W6S2Ec3RUaxfhYp9n6HX-uJ49JcuXxfPsfploTkmflFAZUgmmsrrUCigYgErKvGZZKUoFUhDJqcgoy5ipuYB8PCUypVhuaKXSM3Tz3dsF_zFA7IvGRgPO6Rb8EItcCJWpNN_J229pgo8xQF10wTY6bAtKit2exe-eo73atw5lA9Wv_BlwBNd7oKPRrg66NTb-uZRJrij7c9rE4t0PoR3H-OfhF44diac</recordid><startdate>20101005</startdate><enddate>20101005</enddate><creator>Zhan, Wei</creator><creator>Jiang, Kai</creator><creator>Smith, Matthew D</creator><creator>Bostic, Heidi E</creator><creator>Best, Michael D</creator><creator>Auad, Maria L</creator><creator>Ruppel, Joshua V</creator><creator>Kim, Chungsik</creator><creator>Zhang, X. 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Peter</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Photocurrent Generation from Porphyrin/Fullerene Complexes Assembled in a Tethered Lipid Bilayer</atitle><jtitle>Langmuir</jtitle><addtitle>Langmuir</addtitle><date>2010-10-05</date><risdate>2010</risdate><volume>26</volume><issue>19</issue><spage>15671</spage><epage>15679</epage><pages>15671-15679</pages><issn>0743-7463</issn><eissn>1520-5827</eissn><coden>LANGD5</coden><abstract>A modular photocurrent generation system, based on amphiphilic porphyrin and fullerene species assembled in a tethered lipid bilayer matrix, is reported here. The key findings are (1) the amount of photoactive species can be quantitatively controlled in each leaflet of the bilayer and (2) the sequential formation of the bilayer allows a directional organization of these agents on electrodes. 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| subjects | Chemistry Colloidal state and disperse state Cross-disciplinary physics: materials science rheology Electrochemistry: Charge Transfer, Electrocatalysis, Kinetics, Bioelectrochemistry Exact sciences and technology Fullerenes and related materials diamonds, graphite General and physical chemistry Materials science Membranes Physics Specific materials |
| title | Photocurrent Generation from Porphyrin/Fullerene Complexes Assembled in a Tethered Lipid Bilayer |
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