Abstract
Photodynamic inactivation of pathogenic bacteria and cancer cells by novel water-soluble decacationic fullerene monoadducts, C60[>M(C 3N6 +C3)2] and C70[> M(C3N6+C3)2], were investigated. In the presence of a high number of electron-donating iodide anions as parts of quaternary ammonium salts in the arm region, we found that C70[> M(C3N6 +C3)2] produced more highly reactive HO radical than C60[>M(C3N6 +C 3)2], in addition to singlet oxygen (1O 2). This finding offers an explanation of the preferential killing of Gram-positive and Gram-negative bacteria by C60[>M(C 3N6 +C3)2] and C70[> M(C3N6 +C3)2], respectively. The hypothesis is that 1O2 can diffuse more easily into porous cell walls of Gram-positive bacteria to reach sensitive sites, while the less permeable Gram-negative bacterial cell wall needs the more reactive HO to cause real damage.
| Original language | English |
|---|---|
| Title of host publication | Fullerenes, Nanotubes, and Carbon Nanostructures - 221st ECS Meeting |
| Publisher | Electrochemical Society Inc. |
| Pages | 65-73 |
| Number of pages | 9 |
| Edition | 20 |
| ISBN (Electronic) | 9781623320362 |
| ISBN (Print) | 9781623320362 |
| DOIs | |
| Publication status | Published - 2012 |
| Externally published | Yes |
| Event | Fullerenes, Nanotubes, and Carbon Nanostructures - Symposium on Electron Transfer and Energy Applications of Fullerenes and Nanostructured Materials, Carbon Nanotubes and Nanostructures - 221st ECS Meeting - Seattle, WA, United States Duration: 6 May 2012 → 10 May 2012 |
Publication series
| Name | ECS Transactions |
|---|---|
| Number | 20 |
| Volume | 45 |
| ISSN (Print) | 1938-5862 |
| ISSN (Electronic) | 1938-6737 |
Conference
| Conference | Fullerenes, Nanotubes, and Carbon Nanostructures - Symposium on Electron Transfer and Energy Applications of Fullerenes and Nanostructured Materials, Carbon Nanotubes and Nanostructures - 221st ECS Meeting |
|---|---|
| Country/Territory | United States |
| City | Seattle, WA |
| Period | 6/05/12 → 10/05/12 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 3 Good Health and Well-being
ASJC Scopus subject areas
- General Engineering
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