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| DOI | 10.1126/science.1141316 |
| Stepwise quenching of exciton fluorescence in carbon nanotubes by single-molecule reactions | |
| Cognet L.; Tsyboulski D.A.; Rocha J.-D.R.; Doyle C.D.; Tour J.M.; Weisman R.B. | |
| 发表日期 | 2007 |
| ISSN | 0036-8075 |
| 起始页码 | 1465 |
| 结束页码 | 1468 |
| 卷号 | 316期号:5830 |
| 英文摘要 | Single-molecule chemical reactions with individual single-walled carbon nanotubes were observed through near-infrared photoluminescence microscopy. The emission intensity within distinct submicrometer segments of single nanotubes changed in discrete steps after exposure to acid, base, or diazonium reactants. The steps were uncorrelated in space and time and reflected the quenching of mobile excitons at localized sites of reversible or irreversible chemical attack. Analysis of step amplitudes revealed an exciton diffusional range of about 90 nanometers, independent of nanotube structure. Each exciton visited about 10,000 atomic sites during its lifetime, providing highly efficient sensing of local chemical and physical perturbations. |
| 英文关键词 | acid; base; carbon nanotube; diazonium compound; acid; carbon; chemical reaction; electron; fluorescence; luminescence; microscopy; article; chemical reaction; diffusion; exposure; fluorescence; microscopy; near infrared photoluminescence microscopy; priority journal |
| 语种 | 英语 |
| 来源期刊 | Science
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/243358 |
| 作者单位 | Centre de Physique Moléculaire Optique et Hertzienne, Université Bordeaux 1, CNRS, Talence F-33405, France; Department of Chemistry, Center for Biological and Environmental Nanotechnology, Rice University, Houston, TX 77005, United States |
| 推荐引用方式 GB/T 7714 | Cognet L.,Tsyboulski D.A.,Rocha J.-D.R.,et al. Stepwise quenching of exciton fluorescence in carbon nanotubes by single-molecule reactions[J],2007,316(5830). |
| APA | Cognet L.,Tsyboulski D.A.,Rocha J.-D.R.,Doyle C.D.,Tour J.M.,&Weisman R.B..(2007).Stepwise quenching of exciton fluorescence in carbon nanotubes by single-molecule reactions.Science,316(5830). |
| MLA | Cognet L.,et al."Stepwise quenching of exciton fluorescence in carbon nanotubes by single-molecule reactions".Science 316.5830(2007). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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