Perikala, Manasa and Bhardwaj, Asha (2019) Highly Stable White-Light-Emitting Carbon Dot Synthesis Using a Non-coordinating Solvent. In: ACS OMEGA, 4 (25). pp. 21223-21229.
|
PDF
acs_ome_4-25_21223-21229_2019.pdf - Published Version Download (4MB) | Preview |
Abstract
In this article, synthesis of white-light-emitting, highly stable carbon dots (CDs) using a colloidal synthesis technique is reported. It has been observed that the use of a non-coordinating solvent plays a vital role in the successful fabrication of highly stable CDs. Dilution-independent emissive behavior in CDs is achieved. Excitation-energy-dependent emissive behavior is observed in CDs. However, by surface passivating the CD core by using hexadecylamine (HDA), excitation wavelength dependence of emission is successfully minimized. Surface-functionalized CDs (SFCDs) show blue to green light tunable emission with the change in synthesis conditions. HDA also plays an important role in achieving dilution-independent emission in SFCDs. Furthermore, the carbon dots synthesized are highly inert, and their emission spectra are unaffected on exposure to an open atmosphere for as long as 9 days. A new class of highly crystalline carbon dots called ``carbon onion rings'' is reported.
| Item Type: | Journal Article |
|---|---|
| Publication: | ACS OMEGA |
| Publisher: | AMER CHEMICAL SOC |
| Additional Information: | Copyright of this article belongs to AMER CHEMICAL SOC |
| Keywords: | QUANTUM DOTS; COLOR EMISSION; FLUORESCENCE; NANODOTS; PHOTOLUMINESCENCE; LUMINESCENCE; SIZE |
| Department/Centre: | Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics |
| Date Deposited: | 13 Jan 2020 05:23 |
| Last Modified: | 13 Jan 2020 05:23 |
| URI: | http://eprints.iisc.ac.in/id/eprint/64335 |
Actions (login required)
 |
View Item |
