|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ПсковГУ |
||
Resonant Effects in SERS Spectra of Linear Carbon Chainsстатья
Дата последнего поиска статьи во внешних источниках: 27 января 2018 г.
- Авторы: Arutyunyan Natalia R., Kononenko Vitaly V., Gololobov Victor M., Obraztsova Elena D.
- Журнал: Physica Status Solidi (B): Basic Research
- Том: 255
- Год издания: 2018
- Издательство: John Wiley & Sons Ltd.
- Местоположение издательства: United Kingdom
- Первая страница: 1700254-1
- Последняя страница: 1700254-5
- DOI: 10.1002/pssb.201700254
- Аннотация: Linear carbon chains are synthesized by laser ablation of graphite flakes suspended in ethanol. The optical absorption spectra of the material are measured, and the typical absorption lines at the positions 216, 226, 239, 252, 261, 276, 287, 306 and 325nm are attributed to the linear carbon chains consisting of 8–16 atoms of C. The surface-enhanced Raman scattering (SERS) spectra are registered from the material in the presence of silver nanoparticles. While the Raman spectra of linear carbon chains in ethanol demonstrate only the Raman lines of ethanol, the addition of silver nanoparticles lead to the appearance of a carbon chain signal with enormous intensity. The bands at 1850–2200 cm1 originating from C─C vibrations in polyynic chains dominated in the SERS spectra. The gain of the signal of linear carbon chains exceeded 105. SERS spectra are excited by various wavelengths in the visible range. The resonant re-distribution of the lines attributed to chains with different length is revealed.
- Добавил в систему: Образцова Елена Дмитриевна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|