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Kanungo S, Gupta N, Rawat R, Jain B, Solanki A, Panday A, Das P, Ganguly S. Doped Carbon Quantum Dots Reinforced Hydrogels for Sustained Delivery of Molecular Cargo. J Funct Biomater 2023; 14:jfb14030166. [PMID: 36976090 PMCID: PMC10057248 DOI: 10.3390/jfb14030166] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 03/16/2023] [Accepted: 03/17/2023] [Indexed: 03/29/2023] Open
Abstract
Hydrogels have emerged as important soft materials with numerous applications in fields including biomedicine, biomimetic smart materials, and electrochemistry. Because of their outstanding photo-physical properties and prolonged colloidal stability, the serendipitous findings of carbon quantum dots (CQDs) have introduced a new topic of investigation for materials scientists. CQDs confined polymeric hydrogel nanocomposites have emerged as novel materials with integrated properties of the individual constituents, resulting in vital uses in the realm of soft nanomaterials. Immobilizing CQDs within hydrogels has been shown to be a smart tactic for preventing the aggregation-caused quenching effect and also for manipulating the characteristics of hydrogels and introducing new properties. The combination of these two very different types of materials results in not only structural diversity but also significant improvements in many property aspects, leading to novel multifunctional materials. This review covers the synthesis of doped CQDs, different fabrication techniques for nanostructured materials made of CQDs and polymers, as well as their applications in sustained drug delivery. Finally, a brief overview of the present market and future perspectives are discussed.
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Affiliation(s)
- Shweta Kanungo
- Department of Engineering Science and Humanities, Indore Institute of Science and Technology, Indore 452001, Madhya Pradesh, India
| | - Neeta Gupta
- Department of Chemistry, Govt. E. Raghavendra Rao P. G. Science College, Bilaspur 495001, Chhattisgarh, India
| | - Reena Rawat
- Department of Chemistry, Echelon Institute of Technology, Faridabad 121101, Haryana, India
| | - Bhawana Jain
- Department of Chemistry, Govt. V.Y.T. PG. Autonomous College, Durg 491001, Chhattisgarh, India
| | - Aruna Solanki
- Department of Chemistry, JNS Govt PG College Shujalpur, Affiliated to Vikram University Ujjain (M.P.), Dist Shajapur 465333, Madhya Pradesh, India
| | - Ashutosh Panday
- Department of Physics, Dr. C.V. Raman University, Kota, Bilaspur 495113, Chhattisgarh, India
| | - P Das
- Bar-Ilan Institute for Nanotechnology and Advanced Materials, Ramat Gan 5290002, Israel
| | - S Ganguly
- Bar-Ilan Institute for Nanotechnology and Advanced Materials, Ramat Gan 5290002, Israel
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Yan P, Li M, Liu J, Song L, Tang K. Near-infrared responsive quaternized chitosan-coated MoS2/poly(vinyl alcohol) hydrogel with improved mechanical and rapid antibacterial properties. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Noninvasive Tracking of mPEG-poly(Ala) Hydrogel-Embedded MIN6 Cells after Subcutaneous Transplantation in Mice. Polymers (Basel) 2021; 13:polym13060885. [PMID: 33805723 PMCID: PMC7998640 DOI: 10.3390/polym13060885] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/11/2021] [Accepted: 03/11/2021] [Indexed: 01/10/2023] Open
Abstract
Recently, we demonstrated the feasibility of subcutaneous transplantation of MIN6 cells embedded in a scaffold with poly(ethylene glycol) methyl ether (mPEG)-poly(Ala) hydrogels. In this study, we further tracked these grafts using magnetic resonance (MR) and bioluminescence imaging. After being incubated overnight with chitosan-coated superparamagnetic iron oxide (CSPIO) nanoparticles and then mixed with mPEG-poly(Ala) hydrogels, MIN6 cells appeared as dark spots on MR scans. For in vivo experiments, we transfected MIN6 cells with luciferase and/or incubated them overnight with CSPIO overnight; 5 × 106 MIN6 cells embedded in mPEG-poly(Ala) hydrogels were transplanted into the subcutaneous space of each nude mouse. The graft of CSPIO-labeled MIN6 cells was visualized as a distinct hypointense area on MR images located at the implantation site before day 21. However, this area became hyperintense on MR scans for up to 64 days. In addition, positive bioluminescence images were also observed for up to 64 days after transplantation. The histology of removed grafts showed positive insulin and iron staining. These results indicate mPEG-poly(Ala) is a suitable scaffold for β-cell encapsulation and transplantation. Moreover, MR and bioluminescence imaging are useful noninvasive tools for detecting and monitoring mPEG-poly(Ala) hydrogel-embedded MIN6 cells at a subcutaneous site.
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Thanigai Arul K, Ramana Ramya J, Narayana Kalkura S. Impact of Dopants on the Electrical and Optical Properties of Hydroxyapatite. Biomaterials 2020. [DOI: 10.5772/intechopen.93092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This chapter deals with the effect of alternating electrical current on hydroxyapatite [HAp, Ca10(PO4)6(OH)2] and doped HAp along with their optical response and the processes involved. The dielectric constant, permittivity and ac conductivity were analyzed to have an insight into the surface charge polarization phenomenon. Further, the magnitude and the polarity of the surface charges, microstructure, and phases also play significant role in the cell proliferation and growth on the implants. Besides, the mechanism behind the electrical properties and the healing of bone fracture are discussed. The influence of various dopants on the optical properties of HAp viz., absorbance, transmission, band gaps and defects energy levels are analyzed along with the photoluminescence and excitation independent emission. In the future outlook, the analysis of effect of doping is summarized and its impact on the next generation biomaterials are elucidated.
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Xu L, Zhang Y, Pan H, Xu N, Mei C, Mao H, Zhang W, Cai J, Xu C. Preparation and Performance of Radiata-Pine-Derived Polyvinyl Alcohol/Carbon Quantum Dots Fluorescent Films. MATERIALS 2019; 13:ma13010067. [PMID: 31877792 PMCID: PMC6981502 DOI: 10.3390/ma13010067] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 12/09/2019] [Accepted: 12/19/2019] [Indexed: 11/16/2022]
Abstract
In this study, the low-cost processing residue of Radiata pine (Pinus radiata D. Don) was used as the lone carbon source for synthesis of CQDs (Carbon quantum dots) with a QY (The quantum yield of the CQDs) of 1.60%. The CQDs were obtained by the hydrothermal method, and +a PVA-based biofilm was prepared by the fluidized drying method. The effects of CQDs and CNF (cellulose nanofibers) content on the morphology, optical, mechanical, water-resistance, and wettability properties of the PVA/CQDs and PVA/CNF/CQDs films are discussed. The results revealed that, when the excitation wavelength was increased from 340 to 390 nm, the emission peak became slightly red-shifted, which was induced by the condensation between CQDs and PVA. The PVA composite films showed an increase in fluorescence intensity with the addition of the CNF and CQDs to polymers. The chemical structure of prepared films was determined by the FTIR spectroscopy, and no new chemical bonds were formed. In addition, the UV transmittance was inversely proportional to the change of CQDs content, which indicated that CQDs improved the UV barrier properties of the films. Furthermore, embedding CQDs Nano-materials and CNF into the PVA matrix improved the mechanical behavior of the Nano-composite. Tensile modulus and strength at break increased significantly with increasing the concentration of CQDs Nano-materials inside the Nano-composite, which was due to the increased in the density of crosslinking behavior. With the increase of CQDs content (>1 mL), the water absorption and surface contact angle of the prepared films decreased gradually, and the water-resistance and surface wettability of the films were improved. Therefore, PVA/CNF/CQDs bio-nanocomposite films could be used to prepare anti-counterfeiting, high-transparency, and ultraviolet-resistant composites, which have potential applications in ecological packaging materials.
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Affiliation(s)
- Li Xu
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (Y.Z.); (H.P.); (N.X.); (C.M.); (H.M.); (J.C.)
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Products, Nanjing Forestry University, Nanjing 210037, China
- Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, Nanjing 210037, China
- Correspondence: (L.X.); (C.X.); Tel.: +86-0258-542-7519 (C.X.)
| | - Yushu Zhang
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (Y.Z.); (H.P.); (N.X.); (C.M.); (H.M.); (J.C.)
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Products, Nanjing Forestry University, Nanjing 210037, China
- Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, Nanjing 210037, China
| | - Haiqing Pan
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (Y.Z.); (H.P.); (N.X.); (C.M.); (H.M.); (J.C.)
| | - Nan Xu
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (Y.Z.); (H.P.); (N.X.); (C.M.); (H.M.); (J.C.)
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Products, Nanjing Forestry University, Nanjing 210037, China
- Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, Nanjing 210037, China
| | - Changtong Mei
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (Y.Z.); (H.P.); (N.X.); (C.M.); (H.M.); (J.C.)
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Products, Nanjing Forestry University, Nanjing 210037, China
- Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, Nanjing 210037, China
| | - Haiyan Mao
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (Y.Z.); (H.P.); (N.X.); (C.M.); (H.M.); (J.C.)
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Products, Nanjing Forestry University, Nanjing 210037, China
- Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, Nanjing 210037, China
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA 94720, USA
- Jiangsu Chenguang Coating Co., Ltd., Changzhou 213164, China
| | - Wenqing Zhang
- Jiangsu Province Taizhou Efficient Processing Engineering Technology Research Center for Radiata Pine, Taizhou 214500, China;
| | - Jiabin Cai
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (Y.Z.); (H.P.); (N.X.); (C.M.); (H.M.); (J.C.)
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Products, Nanjing Forestry University, Nanjing 210037, China
- Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, Nanjing 210037, China
| | - Changyan Xu
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (Y.Z.); (H.P.); (N.X.); (C.M.); (H.M.); (J.C.)
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Products, Nanjing Forestry University, Nanjing 210037, China
- Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, Nanjing 210037, China
- Correspondence: (L.X.); (C.X.); Tel.: +86-0258-542-7519 (C.X.)
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