Details

Autor(en) / Beteiligte

• Das, Somes K
• Liu, Yiyang
• Yeom, Sinhea
• Kim, Doo Young
• Richards, Christopher I

Titel

Single-Particle Fluorescence Intensity Fluctuations of Carbon Nanodots

Ist Teil von

• Nano letters, 2014-02, Vol.14 (2), p.620-625

Ort / Verlag

Washington, DC: American Chemical Society

Erscheinungsjahr

2014

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Fluorescent carbon nanodots (CNDs) were synthesized in oxidized and reduced forms and were analyzed at the single-particle level. Images of single CNDs at different excitation energies revealed significant heterogeneity in the lower energy trap sites between particles. We observed that a high percentage of reduced CND particles transitioned between multiple fluorescence intensity levels indicative of multichromophoric systems. Despite this behavior, individual CNDs exhibit single-step photobleaching and transient blinking to the background level suggesting single-molecule behavior.