Abstract
We introduce a facile and convenient method to isolate more than 80% carbon quantum dots (CQD), for the first time. The proposed method substitutes a lengthy conventional dialysis process. An organic solvent, n-butanol is used to extract CQD in a high yield with the cumulative particle size distribution at 2.6 nm. The polymer films were fabricated as a function of increasing content of CQD, and shielded full-band UV light. It is found that the presence of surface functional groups in the CQD creates a high level of dispersion in the polymer matrix and it can block >99% of UV light with just 10 mg of CQD. A plausible mechanism is proposed to explain the superior UV shielding properties of the polymer film and is confirmed by protection of a photo-degradable model dye. Due to being non-toxic and environmentally friendly, the CQD dispersed polymer film could be a promising material in the food packaging industry to protect UV sensitive foods.
| Original language | English |
|---|---|
| Pages (from-to) | 18312-18317 |
| Number of pages | 6 |
| Journal | New Journal of Chemistry |
| Volume | 42 |
| Issue number | 22 |
| DOIs | |
| Publication status | Published - 2018 Jan 1 |
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ASJC Scopus subject areas
- Catalysis
- Chemistry(all)
- Materials Chemistry
Cite this
A convenient method for isolating carbon quantum dots in high yield as an alternative to the dialysis process and the fabrication of a full-band UV blocking polymer film. / Uthirakumar, Periyayya; Devendiran, M.; Kim, Tae Hwan; Lee, In-Hwan.
In: New Journal of Chemistry, Vol. 42, No. 22, 01.01.2018, p. 18312-18317.Research output: Contribution to journal › Article
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TY - JOUR
T1 - A convenient method for isolating carbon quantum dots in high yield as an alternative to the dialysis process and the fabrication of a full-band UV blocking polymer film
AU - Uthirakumar, Periyayya
AU - Devendiran, M.
AU - Kim, Tae Hwan
AU - Lee, In-Hwan
PY - 2018/1/1
Y1 - 2018/1/1
N2 - We introduce a facile and convenient method to isolate more than 80% carbon quantum dots (CQD), for the first time. The proposed method substitutes a lengthy conventional dialysis process. An organic solvent, n-butanol is used to extract CQD in a high yield with the cumulative particle size distribution at 2.6 nm. The polymer films were fabricated as a function of increasing content of CQD, and shielded full-band UV light. It is found that the presence of surface functional groups in the CQD creates a high level of dispersion in the polymer matrix and it can block >99% of UV light with just 10 mg of CQD. A plausible mechanism is proposed to explain the superior UV shielding properties of the polymer film and is confirmed by protection of a photo-degradable model dye. Due to being non-toxic and environmentally friendly, the CQD dispersed polymer film could be a promising material in the food packaging industry to protect UV sensitive foods.
AB - We introduce a facile and convenient method to isolate more than 80% carbon quantum dots (CQD), for the first time. The proposed method substitutes a lengthy conventional dialysis process. An organic solvent, n-butanol is used to extract CQD in a high yield with the cumulative particle size distribution at 2.6 nm. The polymer films were fabricated as a function of increasing content of CQD, and shielded full-band UV light. It is found that the presence of surface functional groups in the CQD creates a high level of dispersion in the polymer matrix and it can block >99% of UV light with just 10 mg of CQD. A plausible mechanism is proposed to explain the superior UV shielding properties of the polymer film and is confirmed by protection of a photo-degradable model dye. Due to being non-toxic and environmentally friendly, the CQD dispersed polymer film could be a promising material in the food packaging industry to protect UV sensitive foods.
UR - http://www.scopus.com/inward/record.url?scp=85056121384&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85056121384&partnerID=8YFLogxK
U2 - 10.1039/c8nj04615h
DO - 10.1039/c8nj04615h
M3 - Article
AN - SCOPUS:85056121384
VL - 42
SP - 18312
EP - 18317
JO - New Journal of Chemistry
JF - New Journal of Chemistry
SN - 1144-0546
IS - 22
ER -