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Ullal N, Sahoo B, Sunil D, Kulkarni SD, Bhat K U, P J A. Yellow emissive and high fluorescence quantum yield carbon dots from perylene-3,4,9,10-tetracarboxylic dianhydride for anticounterfeiting applications. Dalton Trans 2024; 53:16287-16302. [PMID: 39311480 DOI: 10.1039/d4dt02219j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/09/2024]
Abstract
Forged products are widespread in the market and there is an immediate need to counter this growing menace. Anti-counterfeit techniques using fluorescent materials with covert features that appear hidden under daylight and display characteristic fluorescence upon specific source irradiation have gained popularity. Carbon dots (CDs) that can be prepared through facile synthesis from various raw materials are a class of fluorescent materials that provide tremendous opportunities to combat counterfeiting. This work focuses on the fabrication of perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) derived CDs via the solvothermal approach and their subsequent purification using column chromatography. The fifth fraction obtained exhibited remarkable yellow emission (λem = 540 nm) with a high fluorescence quantum yield of 53.22% and a lifetime of 4 ns. The CDs appeared quasi-spherical during TEM imaging with an average diameter of 1-3 nm and appeared polycrystalline from the SAED pattern. The XPS and TEM-EDS results suggested carbon as the major element along with oxygen and nitrogen as the other heteroatoms. The water-based ecofriendly ink formulated using the CDs was printed on UV dull paper using the flexography technique. The print-proof paper samples appeared pale pink under daylight and fluorescent yellow upon 365 nm UV illumination. Moreover, the stability of the print was confirmed upon exposure to strong UV radiation cycles and abrasion resistance. Besides, the fluorescence emission remained unaltered even after 5 months of storage under room temperature conditions. The ink was used to print on PVC sheets and FBB boards with good stability against scuffing, suggesting its applicability in the packaging industry. The CDs could also serve as fluorescent markers for identifying post-consumer plastic packaging for a circular economy.
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Affiliation(s)
- Namratha Ullal
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India.
| | - Bibekananda Sahoo
- Department of Metallurgical and Materials Engineering, National Institute of Technology, Surathkal 575025, Karnataka, India
| | - Dhanya Sunil
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India.
| | - Suresh D Kulkarni
- Centre of Applied Nanosciences, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Udaya Bhat K
- Department of Metallurgical and Materials Engineering, National Institute of Technology, Surathkal 575025, Karnataka, India
| | - Anand P J
- Manipal Technologies Limited, Manipal 576104, Karnataka, India
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Wawoczny A, Szymańska K, Gillner D. Novel stationary basket reactor for effective biomass delignification with deep eutectic solvent. BIORESOURCE TECHNOLOGY 2024; 413:131455. [PMID: 39260725 DOI: 10.1016/j.biortech.2024.131455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2024] [Revised: 08/26/2024] [Accepted: 09/05/2024] [Indexed: 09/13/2024]
Abstract
Biomass pretreatment and conversion are crucial for sustainable development, but lack information on equipment that ensures effective mass transfer and easy biomass separation post-process. This work introduces a novel basket reactor with a stationary bed (StatBioChem) for biomass processing using deep eutectic solvents (DESs). We compared the delignification efficiencies of soft and hard biomass samples processed in the StatBioChem reactor, a stirred tank reactor (STR), and a commercial SpinChem® reactor. The StatBioChem design allowed DES to flow evenly through biomass in the basket, achieving the highest delignification degree, particularly for hard biomass. This effect was not observed in the SpinChem® basket reactor. High delignification led to increased glucose yields in subsequent enzymatic hydrolysis. The StatBioChem effectively combines the simplicity and efficiency of an STR with the ease of solvent recovery typical of basket reactors.
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Affiliation(s)
- Agata Wawoczny
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Faculty of Chemistry, Silesian University of Technology, Krzywoustego 4, 44-100 Gliwice, Poland; Biotechnology Center, Silesian University of Technology, Krzywoustego 8, 44-100 Gliwice, Poland; Joint Doctoral School, Silesian University of Technology, Akademicka 2A, 44-100 Gliwice, Poland
| | - Katarzyna Szymańska
- Department of Chemical Engineering and Process Design, Silesian University of Technology, Ks. M. Strzody 7, 44-100 Gliwice, Poland
| | - Danuta Gillner
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Faculty of Chemistry, Silesian University of Technology, Krzywoustego 4, 44-100 Gliwice, Poland; Biotechnology Center, Silesian University of Technology, Krzywoustego 8, 44-100 Gliwice, Poland.
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Lagos KJ, García D, Cuadrado CF, de Souza LM, Mezzacappo NF, da Silva AP, Inada N, Bagnato V, Romero MP. Carbon dots: Types, preparation, and their boosted antibacterial activity by photoactivation. Current status and future perspectives. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2023:e1887. [PMID: 37100045 DOI: 10.1002/wnan.1887] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 02/14/2023] [Accepted: 03/03/2023] [Indexed: 04/28/2023]
Abstract
Carbon dots (CDs) correspond to carbon-based materials (CBM) with sizes usually below 10 nm. These nanomaterials exhibit attractive properties such us low toxicity, good stability, and high conductivity, which have promoted their thorough study over the past two decades. The current review describes four types of CDs: carbon quantum dots (CQDs), graphene quantum dots (GQDs), carbon nanodots (CNDs), and carbonized polymers dots (CPDs), together with the state of the art of the main routes for their preparation, either by "top-down" or "bottom-up" approaches. Moreover, among the various usages of CDs within biomedicine, we have focused on their application as a novel class of broad-spectrum antibacterial agents, concretely, owing their photoactivation capability that triggers an enhanced antibacterial property. Our work presents the recent advances in this field addressing CDs, their composites and hybrids, applied as photosensitizers (PS), and photothermal agents (PA) within antibacterial strategies such as photodynamic therapy (PDT), photothermal therapy (PTT), and synchronic PDT/PTT. Furthermore, we discuss the prospects for the possible future development of large-scale preparation of CDs, and the potential for these nanomaterials to be employed in applications to combat other pathogens harmful to human health. This article is categorized under: Therapeutic Approaches and Drug Discovery > Nanomedicine for Infectious Disease.
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Affiliation(s)
- Karina J Lagos
- Department of Materials, Escuela Politécnica Nacional (EPN), Quito, Ecuador
| | - David García
- Department of Materials, Escuela Politécnica Nacional (EPN), Quito, Ecuador
| | | | | | | | - Ana Paula da Silva
- São Carlos Institute of Physics, University of São Paulo (USP), São Carlos, Brazil
| | - Natalia Inada
- São Carlos Institute of Physics, University of São Paulo (USP), São Carlos, Brazil
| | - Vanderlei Bagnato
- São Carlos Institute of Physics, University of São Paulo (USP), São Carlos, Brazil
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Carbon dots from eco-friendly precursors for optical sensing application: an up-to-date review. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02353-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Abstract
Carbon dots (CDs) are zero-dimensional quasi-spherical nanoparticles endowed with excellent advantages including good luminescence features, photostability, low cytotoxicity, remarkable aqueous solubility, favourable biocompatibility, low risk to environment and great flexibility in surface modification. Fluorescent CDs that can selectively respond to specific inorganic/organic target molecules in environmental and biological samples are of prime significance amongst the new generation intelligent sensors due to the critical involvement of different ions/molecular species in not only human health, but also in environment processes. In this context, preparation of CDs from bioprecursors has immense significance due to the involvement of green principles, inexpensive, clean, nontoxic, easily accessible, renewable and large-scale production can be realized. This article aims at exploring different types of green raw materials including plant biomass, animal products, food items and waste materials as carbon sources for the synthesis of both undoped and doped CDs. The emphasis is given on different synthetic approaches adopted for improving the quantum yield without any chemical modification, the characterization techniques, mechanistic origin of photoluminescence and fluorescence response mechanisms involved in the sensing action towards various analytes. The significant benefits and limitations of CDs obtained from eco-friendly precursors through green approaches are summarized. Various challenges and the future prospects of these carbonaceous nanomaterials as sensors are also discussed.
Graphical abstract
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Vasin A, Kysil D, Rusavsky A, Isaieva O, Zaderko A, Nazarov A, Lysenko V. Synthesis and Luminescent Properties of Carbon Nanodots Dispersed in Nanostructured Silicas. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:3267. [PMID: 34947616 PMCID: PMC8706695 DOI: 10.3390/nano11123267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 10/25/2021] [Accepted: 11/23/2021] [Indexed: 12/02/2022]
Abstract
Luminescent carbon nanoparticles are a relatively new class of luminescent materials that have attracted the increasing interest of chemists, physicists, biologists and engineers. The present review has a particular focus on the synthesis and luminescent properties of carbon nanoparticles dispersed inside nanostructured silica of different natures: oxidized porous silicon, amorphous thin films, nanopowders, and nanoporous sol-gel-derived ceramics. The correlations of processing conditions with emission/excitation spectral properties, relaxation kinetics, and photoluminescence photodegradation behaviors are analyzed. Following the evolution of the photoluminescence (PL) through the "from-bottom-to-up" synthesis procedure, the transformation of molecular-like ultraviolet emission of organic precursor into visible emission of carbon nanoparticles is demonstrated. At the end of the review, a novel method for the synthesis of luminescent and transparent composites, in form of nanoporous silica filled with luminescent carbon nanodots, is presented. A prototype of white light emitting devices, constructed on the basis of such luminophores and violet light emitting diodes, is demonstrated.
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Affiliation(s)
- Andrii Vasin
- Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, 03028 Kyiv, Ukraine; (D.K.); (A.R.); (O.I.); (A.N.); (V.L.)
- Department of Applied Physics, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, 03056 Kyiv, Ukraine
| | - Dmytro Kysil
- Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, 03028 Kyiv, Ukraine; (D.K.); (A.R.); (O.I.); (A.N.); (V.L.)
| | - Andriy Rusavsky
- Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, 03028 Kyiv, Ukraine; (D.K.); (A.R.); (O.I.); (A.N.); (V.L.)
| | - Oksana Isaieva
- Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, 03028 Kyiv, Ukraine; (D.K.); (A.R.); (O.I.); (A.N.); (V.L.)
| | - Alexander Zaderko
- Institute of High Technologies, Taras Shevchenko National University of Kyiv, 01033 Kyiv, Ukraine;
| | - Alexei Nazarov
- Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, 03028 Kyiv, Ukraine; (D.K.); (A.R.); (O.I.); (A.N.); (V.L.)
- Department of General Physics and Solid State Physics, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, 03056 Kyiv, Ukraine
| | - Volodymyr Lysenko
- Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, 03028 Kyiv, Ukraine; (D.K.); (A.R.); (O.I.); (A.N.); (V.L.)
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Mikhraliieva A, Zaitsev V, Tkachenko O, Nazarkovsky M, Xing Y, Benvenutti EV. Graphene oxide quantum dots immobilized on mesoporous silica: preparation, characterization and electroanalytical application. RSC Adv 2020; 10:31305-31315. [PMID: 35520679 PMCID: PMC9056381 DOI: 10.1039/d0ra04605a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 07/15/2020] [Indexed: 11/29/2022] Open
Abstract
Because of its high surface area and combination of various functional groups, graphene oxide (GO) is currently one of the most actively studied materials for electroanalytical applications. It is not practical to utilize self-supported GO on its own and thus it is commonly integrated with different supporting carriers. Having a large lateral size, GO can only wrap the particles of the support and thus can significantly reduce the surface area of porous materials. To achieve synergy from the high surface area and polyfunctional nature of GO, and the rigid structure of a porous support, the lateral size of GO must essentially be decreased. Recently reported graphene oxide quantum dots (GOQDs) can fulfil this task. Here we report the successful preparation of an SiO2-GOQDs hybrid, where GOQDs have been incorporated into the mesoporous network of silica. The SiO2-GOQDs emit a strong luminescence with a band maximum at 404 nm. The Raman spectrum of SiO2-GOQDs shows two distinct peaks at 1585 cm−1 (G-peak) and 1372 cm−1 (D-peak), indicating the presence of a graphene ordered basal plane with aromatic sp2-domains and a disordered oxygen-containing structure. Covalent immobilization of GOQDs onto aminosilica via such randomly structured oxygen fragments was proven with the help of Fourier transform infrared spectroscopy, solid-state cross-polarization magic angle spinning 13C nuclear magnetic resonance, and X-ray photoelectron spectroscopy. SiO2-GOQDs were used as a modifier of a carbon paste electrode for differential pulse voltammetry determination of two antibiotics (sulfamethoxazole and trimethoprim) and two endocrine disruptors (diethylstilbestrol (DES) and estriol (EST)). The modified electrodes demonstrated a significant signal enhancement for EST (370%) and DES (760%), which was explained by a π–π stacking interaction between GOQDs and the aromatic system of the analytes. Graphene oxide quantum dots incorporated into a mesoporous silica network have been used as a modifier of a carbon paste electrode for the determination of antibiotics and hormones.![]()
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Affiliation(s)
- Albina Mikhraliieva
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro Marquês de São Vicente, 225 22451-900 Rio de Janeiro Brazil
| | - Vladimir Zaitsev
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro Marquês de São Vicente, 225 22451-900 Rio de Janeiro Brazil .,National University of Kyiv-Mohyla Academy 2 Skovorody vul. Kyiv 04070 Ukraine
| | - Oleg Tkachenko
- Materials Chemistry Department, V. N. Karazin Kharkiv National University 4 Svoboda Square Kharkiv 61022 Ukraine.,Institute of Chemistry, UFRGS PO Box 15003, CEP Porto Alegre RS 91501-970 Brazil
| | - Michael Nazarkovsky
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro Marquês de São Vicente, 225 22451-900 Rio de Janeiro Brazil
| | - Yutao Xing
- Laboratório de Microscopia Eletrônica de Alta Resolução, Centro de Caracterização Avançada para Indústria de Petróleo (LaMAR/CAIPE), Universidade Federal Fluminense 24210-346 Niterói RJ Brazil
| | - Edilson V Benvenutti
- Materials Chemistry Department, V. N. Karazin Kharkiv National University 4 Svoboda Square Kharkiv 61022 Ukraine
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