Ďakujem! Vynikajúce! Nebol by som sa nazdal, že kvantové bodky môžu poskytnúť takéto zaújmavé úkazy! V knížke ktorú som mal požičané od suseda študujúceho optiku, sa uvádzal len výskum javov kde sa študovalo vyžarovanie jedného fotónu pri týchto pokusoch. Nič inšie som z toho nepochopil. Až teraz od Vás.
Hi and thank you, I am so happy that you enjoyed the video! In this CQD preparation and also in most other cases, I was looking at the mixture while it was being heated in the microwave oven and I observed two different factors: 1. bubbles and 2. color of the mixture. The reaction that produces CQDs also produces carbon dioxide gas bubbles. When the bubbling is almost over, the reaction is almost over as well and therefore there should be CQDs in the mixture now. Also, concentrated solutions of CQDs are very dark colored and the mixture gradually darkens to nearly black during the heating, so the dark color also confirms that the CQDs are successfully prepared. Of course it is best to further confirm the results by looking for the fluorescence, whether just in water, or on the chromatogram. The fluorescence is in most cases the easiest way to confirm the presence of CQDs. I hope this answers your question, happy experimentation!
beautiful video and idea, easy but very informative. Thank you very much from Argentine!
Ďakujem! Vynikajúce! Nebol by som sa nazdal, že kvantové bodky môžu poskytnúť takéto zaújmavé úkazy! V knížke ktorú som mal požičané od suseda študujúceho optiku, sa uvádzal len výskum javov kde sa študovalo vyžarovanie jedného fotónu pri týchto pokusoch. Nič inšie som z toho nepochopil. Až teraz od Vás.
I prefer the CQDs from the reaction between citric acid and urea, as it's more accessible and produces prettier colours.
Beautiful video! Thank you!
Sir kindly provide the research paper for this?
Very nice video..kindly make more videos about carbon quantum dots ..plz..plz..😊😊👍👍👍🙏🙏..thank you for the great inspiration..😊
Sir kindly provide the research paper for this
Sir ,can you provide the research paper for this
Nice video👍
I want to know how u confirmed that the carbon dots are successfully prepared
Hi and thank you, I am so happy that you enjoyed the video!
In this CQD preparation and also in most other cases, I was looking at the mixture while it was being heated in the microwave oven and I observed two different factors: 1. bubbles and 2. color of the mixture. The reaction that produces CQDs also produces carbon dioxide gas bubbles. When the bubbling is almost over, the reaction is almost over as well and therefore there should be CQDs in the mixture now. Also, concentrated solutions of CQDs are very dark colored and the mixture gradually darkens to nearly black during the heating, so the dark color also confirms that the CQDs are successfully prepared. Of course it is best to further confirm the results by looking for the fluorescence, whether just in water, or on the chromatogram. The fluorescence is in most cases the easiest way to confirm the presence of CQDs.
I hope this answers your question,
happy experimentation!
@@zdenekpilat6616 can u give ur email id it would be much easier to clear my doubts with ur help