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Morphology Control of Luminescent Carbon Nanomaterials: From Dots to Rolls and Belts
Tao Liang1; Enshan Liu1; Minghui Li1; Elena V. Ushakova2,3; Stephen V. Kershaw2,4; Andrey L. Rogach2,3,4; Zikang Tang1; Songnan Qu1
2021-01-26
Source PublicationACS Nano
ISSN1936-0851
Volume15Issue:1Pages:1579-1586
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 nm. In ethanol solution, CNRs have a maximum absorption peak at 665 nm and a NIR emission band extending from 650 to 800 nm, with a photoluminescence quantum yield of 9.2%. Intriguingly, the rolled structure of CNRs can be uncoiled under 655 nm laser irradiation (power density 1 W·cm-2) of their solution in ethanol, forming CNBs with a width of 7-20 nm and lengths reaching several hundreds of nanometers, which is accompanied by a considerably decreased absorption band at 665 nm and a decreased NIR emission. This unfolding is ascribed to the decrease of the strength of interlayer hydrogen bonding, owing to the photothermally induced dehydration and further carbonization of the CNRs. Alongside the decreased NIR emission, CNBs exhibit enhanced green and red emissions under UV and green light excitation, respectively, which allows us to demonstrate multiple-level luminescence encryptions on a paper stamped with CNR- and CNB-inks.

KeywordCarbon Dots Carbon Nanobelts Carbon Nanorolls Luminescence Encryption Morphology Control Near-infrared Emission Photothermal Conversion
DOI10.1021/acsnano.0c09053
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000613942700128
Scopus ID2-s2.0-85099042455
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Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorAndrey L. Rogach; Zikang Tang; Songnan Qu
Affiliation1.Joint Key Laboratory of the Ministry of Education,Institute of Applied Physics and Materials Engineering,University of Macau,Taipa,999078,Macao
2.Department of Materials Science and Engineering,Centre for Functional Photonics (CFP),City University of Hong Kong,Kowloon,83 Tat Chee Avenue,999077,Hong Kong
3.Center of Information Optical Technologies,ITMO University,Saint Petersburg,49 Kronverksky Pr.,197101,Russian Federation
4.Shenzhen Research Institute,City University of Hong Kong,Shenzhen,518057,China
First Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Recommended Citation
GB/T 7714
Tao Liang,Enshan Liu,Minghui Li,et al. Morphology Control of Luminescent Carbon Nanomaterials: From Dots to Rolls and Belts[J]. ACS Nano,2021,15(1):1579-1586.
APA Tao Liang,Enshan Liu,Minghui Li,Elena V. Ushakova,Stephen V. Kershaw,Andrey L. Rogach,Zikang Tang,&Songnan Qu.(2021).Morphology Control of Luminescent Carbon Nanomaterials: From Dots to Rolls and Belts.ACS Nano,15(1),1579-1586.
MLA Tao Liang,et al."Morphology Control of Luminescent Carbon Nanomaterials: From Dots to Rolls and Belts".ACS Nano 15.1(2021):1579-1586.
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