2020
DOI: 10.1021/acsnano.0c09053
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Morphology Control of Luminescent Carbon Nanomaterials: From Dots to Rolls and Belts

Abstract: In this work, we report a successful extension of the family of light-emitting colloidal carbon nanostructures to a number of different shapes and morphologies, namely, carbon nanorolls (CNRs) and carbon nanobelts (CNBs). Near infrared (NIR)-emissive CNRs were synthesized via a solvothermal fusion of carbon dots (CDs) triggered by a dehydration process of their surface functional groups. They appear in a form of short cylinders, with diameters ranging from 20 to 40 nm and cylinder lengths ranging from 7 to 20 … Show more

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Cited by 42 publications
(47 citation statements)
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“…[110] Aggregation of CDs occurred while elevating the concentration and resulted in the red-shifted emission. Liang and coworkers produced carbon nanorolls through a solvothermal fusion of the N,S-codoped CDs in ethanol, [111] which led to enhanced (from 3% to 9% PL QY) and strongly red-shifted (from 605 nm) absorption band at 665 nm and a NIR emission peaked at 695 nm. Improvement of the NIR emission of CNRs has been attributed to suppressed vibrational energy dissipation because of their more compact structure.…”
Section: Steady-state Photoluminescencementioning
confidence: 99%
“…[110] Aggregation of CDs occurred while elevating the concentration and resulted in the red-shifted emission. Liang and coworkers produced carbon nanorolls through a solvothermal fusion of the N,S-codoped CDs in ethanol, [111] which led to enhanced (from 3% to 9% PL QY) and strongly red-shifted (from 605 nm) absorption band at 665 nm and a NIR emission peaked at 695 nm. Improvement of the NIR emission of CNRs has been attributed to suppressed vibrational energy dissipation because of their more compact structure.…”
Section: Steady-state Photoluminescencementioning
confidence: 99%
“…Although there are numerous methods for the synthesis of R-CDs, hydrothermal and solvothermal methods, [28][29][30][31][32][33][34][35][36][37][38][39][40] remain the most common. One of the most striking examples is Liu et al, 41 who used a conjugated aromatic amine precursor (tris(4-aminophenyl) amine, TAPA) to prepare R-CDs with an emission wavelength at 615 AE 2 nm, a quantum yield (QY) of 84 AE 5%, and a full width at half maximum (FWHM) of 27 AE 1 nm, which is one of the highest levels of R-CDs to date.…”
Section: Introductionmentioning
confidence: 99%
“…The CQDs were synthesized according to literature 26 As shown in the transmission electron microscope (TEM) image (Fig. 1a), the diameters of the CQDs range from 2 nm to nm with clear 0.21 nm lattice fringes, which corresponds to (100) plane of graphite.…”
Section: Resultsmentioning
confidence: 99%