Light Emitting Molecules
Автор: Arca Anil
Загружено: 2025-09-18
Просмотров: 71
In this video, I briefly demonstrate the phenomena of fluorescence. Rhodamine B and fluorescein sodium salt are two different molecules that emit intense light under UV illumination. The process occurring in these molecules can be summarized as follows: An electron is excited to a singlet energy level by UV light. When the high-energy electron returns to the lower energy level, it releases the energy difference as light. This process is called fluorescence.
Timecodes:
0:00 - Rhodamine B and fluorescein sodium salt
1:12 - Fluorescein sodium salt fluorescence
1:25 - Rhodamine B fluorescence
Theory of fluorescence and phosphorescence:
• Photoluminescence and Spectrofluorometers
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