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Study of fluorescence enhancement of colloidal CdSe/ZnS quantum dots bound to hexadecylamine by single-molecule measurements
| Content Provider | Semantic Scholar |
|---|---|
| Author | Yuan, Chi-Tsu Chou, Wu Ching Chen, Yueh-Nan Chou, Jui-Wen Chuuji, Der-San Li, Jimmy Kuan-Jung Chang, Walter H. Shen, Ji-Lin |
| Copyright Year | 2007 |
| Abstract | Fluorescence enhancement of colloidal CdSe/ZnS quantum dots (QDs) by the binding of hexadecylamine (HDA) ligands was investigated at the single-QD level. The blinking behavior of individual CdSe/ZnS QDs can be dramatically modified by additional HDA ligands. Both the ratio of the mean on/off time lengths and the total number of emitted photons within the on-time duration can be enhanced, by factors of up to 2.8 and 13, respectively. Consequently, the blinking rate can be suppressed down to 18%. The fluorescence decay curve is closer to a single-exponential decay profile and has a longer measured lifetime. These results suggest that HDA ligands can further improve surface passivation. |
| Starting Page | 15166 |
| Ending Page | 15172 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.1021/jp074561p |
| Volume Number | 111 |
| Alternate Webpage(s) | https://ir.nctu.edu.tw/bitstream/11536/10221/1/000250438900007.pdf |
| Alternate Webpage(s) | https://doi.org/10.1021/jp074561p |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
