1
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Alotaibi AF, Rodriguez BJ, Rice JH. A nano-imprinted graphene oxide-cellulose composite as a SERS active substrate. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:3385-3391. [PMID: 38751361 DOI: 10.1039/d4ay00749b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
Cellulose is a sustainable material capable of forming optically active nanoarrays on its surface. We created a composite of cellulose acetate (CA) and graphene oxide (GO), by mixing GO (0.1 mg mL-1) into CA. This was then imprinted with nanoscale surface features that form Bragg-like modes in resonance with the excitation laser when a thin layer of silver is vapor deposited onto the surface of the substrate. The addition of GO leads to improved surface-enhanced Raman scattering (SERS) signal strengths, obtaining an average SERS signal increase of 1.4-fold following the inclusion of GO. The combination of photonic and electromagnetic effects with charge transfer-based processes that support the SERS chemical mechanism and the possible presence of electromagnetic hot spots from the roughened surface results in an enhanced SERS signal strength when GO is added. This work shows the potential for nanoimprinted graphene oxide/cellulose acetate composites as flexible sensor platforms to detect target molecules.
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Affiliation(s)
- Aeshah F Alotaibi
- School of Physics, University College Dublin, Belfield, Dublin 4, Ireland.
- Department of Physics, College of Science and Humanities, Shaqra University, Shaqra, Kingdom of Saudi Arabia
| | - Brian J Rodriguez
- School of Physics, University College Dublin, Belfield, Dublin 4, Ireland.
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
| | - James H Rice
- School of Physics, University College Dublin, Belfield, Dublin 4, Ireland.
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2
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Almohammed S, Finlay A, Duleba D, Cosgrave S, Johnson R, Rodriguez BJ, Rice JH. Piezoelectric Peptide Nanotube Substrate Sensors Activated through Sound Wave Energy. ACS MATERIALS LETTERS 2024; 6:1863-1869. [PMID: 38726043 PMCID: PMC11077579 DOI: 10.1021/acsmaterialslett.3c01613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 04/02/2024] [Accepted: 04/04/2024] [Indexed: 05/12/2024]
Abstract
The use of sustainable and safe materials is increasingly in demand for the creation of photonic-based technology. Piezoelectric peptide nanotubes make up a class of safe and sustainable materials. We show that these materials can generate piezoelectric charge through the deformation of oriented molecular dipoles when the tube length is flexed through the application of sound energy. Through the combination of peptide nanotubes with plasmon active nanomaterials, harvesting of low-frequency acoustic sound waves was achieved. This effect was applied to boost surface-enhanced Raman scattering signal detection of analytes, including glucose. This work demonstrates the potential of utilizing sound to boost sensing by using piezoelectric materials.
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Affiliation(s)
- Sawsan Almohammed
- School
of Physics, University College Dublin, Belfield, Dublin 4 D04 V1W8, Ireland
- Conway
Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4 D04 V1W8, Ireland
| | - Allan Finlay
- School
of Physics, University College Dublin, Belfield, Dublin 4 D04 V1W8, Ireland
| | - Dominik Duleba
- School
of Chemistry, University College Dublin, Belfield, Dublin 4 D04 V1W8, Ireland
| | - Shane Cosgrave
- School
of Physics, University College Dublin, Belfield, Dublin 4 D04 V1W8, Ireland
| | - Robert Johnson
- School
of Chemistry, University College Dublin, Belfield, Dublin 4 D04 V1W8, Ireland
| | - Brian J. Rodriguez
- School
of Physics, University College Dublin, Belfield, Dublin 4 D04 V1W8, Ireland
- Conway
Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4 D04 V1W8, Ireland
| | - James H. Rice
- School
of Physics, University College Dublin, Belfield, Dublin 4 D04 V1W8, Ireland
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3
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Yang L, Wang Y, Zhang W, Ma G. New Insight into the Structural Nature of Diphenylalanine Nanotube through Comparison with Amyloid Assemblies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:1046-1057. [PMID: 38153333 DOI: 10.1021/acs.langmuir.3c03270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
Diphenylalanine (FF) nanotubes are a star material in the field of peptide self-assembly and have demonstrated numerous intriguing applications. Due to its resemblance to amyloid assembly, the FF nanotube is widely regarded as a simplified mimic of amyloids. Yet, whether FF nanotube truly possesses amyloid structure remains an open question. To better understand the structural nature of FF nanotube, we herein performed a comparative structural investigation between FF nanotube and typical amyloid systems by Aβ1-40, Aβ1-42, Aβ16-22, Aβ13-23, α-synuclein, and lysozyme using Fourier transform infrared spectroscopy. Through this comparative investigation, we obtained clear evidence to support that the FF nanotube does not possess a β-sheet structure, a key structural characteristic of amyloid assembly, thus revealing the non-amyloid structural nature of the FF nanotube. At last, in light of our new finding, we further discussed the unique self-assembly behaviors of FF during nanotube formation and the implications of our work for FF nanotube related applications.
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Affiliation(s)
- Lujuan Yang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Key Laboratory of Analytical Science and Technology of Hebei Province, State Key Laboratory of New Pharmaceutical Preparations and Excipients, College of Chemistry and Materials Science, Hebei University, Baoding 071002, China
| | - Yao Wang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Key Laboratory of Analytical Science and Technology of Hebei Province, State Key Laboratory of New Pharmaceutical Preparations and Excipients, College of Chemistry and Materials Science, Hebei University, Baoding 071002, China
| | - Wenkai Zhang
- Department of Physics, Applied Optics Beijing Area Major Laboratory, Center for Advanced Quantum Studies, Beijing Normal University, Beijing 100875, China
| | - Gang Ma
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Key Laboratory of Analytical Science and Technology of Hebei Province, State Key Laboratory of New Pharmaceutical Preparations and Excipients, College of Chemistry and Materials Science, Hebei University, Baoding 071002, China
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4
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Alanazi AT, Alotaibi A, Alqahtani M, Rice JH. Dichalcogenide and Metal Oxide Semiconductor-Based Composite to Support Plasmonic Catalysis. ACS OMEGA 2023; 8:6318-6324. [PMID: 36844575 PMCID: PMC9947995 DOI: 10.1021/acsomega.2c06337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 02/03/2023] [Indexed: 06/18/2023]
Abstract
Nanocomposites comprising plasmon active metal nanostructures and semiconductors have been used to control the charge states in the metal to support catalytic activity. In this context dichalcogenides when combined with metal oxides offer the potential to control charge states in plasmonic nanomaterials. Using a model plasmonic mediated oxidation reaction p-amino thiophenol ↔ p-nitrophenol, we show that through the introduction of transition metal dichalcogenide nanomaterial, reaction outcomes can be influenced, achieved through controlling the occurrence of the reaction intermediate dimercaptoazobenzene by opening new electron transfer routes in a semiconductor-plasmonic system. This study demonstrates the ability to control plasmonic reactions by carefully controlling the choice of semiconductors.
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Affiliation(s)
- Ahmed T. Alanazi
- School
of Physics, University College Dublin, Belfield, 4 Dublin, Ireland
| | - Aeshah Alotaibi
- School
of Physics, University College Dublin, Belfield, 4 Dublin, Ireland
| | - Mahdi Alqahtani
- King
Abdulaziz City for Science and Technology (KACST), Riyadh 12371, Saudi Arabia
| | - James H. Rice
- School
of Physics, University College Dublin, Belfield, 4 Dublin, Ireland
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5
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Si F, Zhang Y, Lu J, Hou M, Yang H, Liu Y. A highly sensitive, eco-friendly electrochemical assay for alkaline phosphatase activity based on a photoATRP signal amplification strategy. Talanta 2023; 252:123775. [DOI: 10.1016/j.talanta.2022.123775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 07/08/2022] [Accepted: 07/22/2022] [Indexed: 11/15/2022]
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6
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Zhu X, Wu J, Liu R, Xiang H, Zhang W, Chang Q, Wang S, Jiang R, Zhao F, Li Q, Huang L, Yan L, Zhao Y. Engineering Single-Atom Iron Nanozymes with Radiation-Enhanced Self-Cascade Catalysis and Self-Supplied H 2O 2 for Radio-enzymatic Therapy. ACS NANO 2022; 16:18849-18862. [PMID: 36278792 DOI: 10.1021/acsnano.2c07691] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Single-atom nanozymes (SAzymes), with individually isolated metal atom as active sites, have shown tremendous potential as enzyme-based drugs for enzymatic therapy. However, using SAzymes in tumor theranostics remains challenging because of deficient enzymatic activity and insufficient endogenous H2O2. We develop an external-field-enhanced catalysis by an atom-level engineered FeN4-centered nanozyme (FeN4-SAzyme) for radio-enzymatic therapy. This FeN4-SAzyme exhibits peroxidase-like activity capable of catalyzing H2O2 into hydroxyl radicals and converting single-site FeII species to FeIII for subsequent glutathione oxidase-like activity. Density functional theory calculations are used to rationalize the origin of the single-site self-cascade enzymatic activity. Importantly, using X-rays can improve the overall single-site cascade enzymatic reaction process via promoting the conversion frequency of FeII/FeIII. As a H2O2 producer, natural glucose oxidase is further decorated onto the surface of FeN4-SAzyme to yield the final construct GOD@FeN4-SAzyme. The resulting GOD@FeN4-SAzyme not only supplies in situ H2O2 to continuously produce highly toxic hydroxyl radicals but also induces the localized deposition of radiation dose, subsequently inducing intensive apoptosis and ferroptosis in vitro. Such a synergistic effect of radiotherapy and self-cascade enzymatic therapy allows for improved tumor growth inhibition with minimal side effects in vivo. Collectively, this work demonstrates the introduction of external fields to enhance enzyme-like performance of nanozymes without changing their properties and highlights a robust therapeutic capable of self-supplying H2O2 and amplifying self-cascade reactions to address the limitations of enzymatic treatment.
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Affiliation(s)
- Xianyu Zhu
- Institute of Marine Science and Technology, Shandong University, Qingdao266237, P.R. China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics and National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing100049, P.R. China
| | - Jiabin Wu
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei430074, P.R. China
| | - Ruixue Liu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics and National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing100049, P.R. China
| | - Huandong Xiang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics and National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing100049, P.R. China
- GBA Research Innovation Institute for Nanotechnology, Guangdong510700, P.R. China
| | - Wenqi Zhang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics and National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing100049, P.R. China
| | - Qingchao Chang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics and National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing100049, P.R. China
| | - Shanshan Wang
- Institute of Quality Standards & Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing100081, P.R. China
| | - Rui Jiang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei430074, P.R. China
| | - Feng Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics and National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing100049, P.R. China
| | - Qiqiang Li
- Institute of Marine Science and Technology, Shandong University, Qingdao266237, P.R. China
| | - Liang Huang
- GBA Research Innovation Institute for Nanotechnology, Guangdong510700, P.R. China
| | - Liang Yan
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics and National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing100049, P.R. China
- University of Chinese Academy of Sciences, Beijing100049, P.R. China
| | - Yuliang Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics and National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing100049, P.R. China
- National Center for Nanoscience and Technology, Beijing100190, P.R. China
- University of Chinese Academy of Sciences, Beijing100049, P.R. China
- GBA Research Innovation Institute for Nanotechnology, Guangdong510700, P.R. China
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7
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Ji C, Lu J, Shan B, Li F, Zhao X, Yu J, Xu S, Man B, Zhang C, Li Z. The Origin of Mo 2C Films for Surface-Enhanced Raman Scattering Analysis: Electromagnetic or Chemical Enhancement? J Phys Chem Lett 2022; 13:8864-8871. [PMID: 36125003 DOI: 10.1021/acs.jpclett.2c02392] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The relatively weak Raman enhanced factors of semiconductor-based substrate limit its further application in surface-enhanced Raman scattering (SERS). Here, a kind of two-dimensional (2D) semimetal material, molybdenum carbide (Mo2C) film, is prepared via a chemical vapor deposition (CVD) method, and the origin of SERS is investigated for the first time. The detection limits of the prepared Mo2C films for crystal violet (CV) and rhodamine 6G (R6G) molecules are low at 10-6 M and 10-8 M, respectively. Our detailed theoretical analysis, based on density functional theory and the finite element method, demonstrates that the enhancement of the 2D Mo2C film is indeed CM in nature rather than the EM effects. Besides, the basic doping strategies are proposed to further optimize the SERS sensitivity of Mo2C for Fermi level regulation. We believe this work will provide a helpful guide for developing a highly sensitive semimetal SERS substrate.
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Affiliation(s)
- Chang Ji
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, P.R. China
| | - Jinxuan Lu
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, P.R. China
| | - Baojie Shan
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, P.R. China
| | - Fengrui Li
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, P.R. China
| | - Xiaofei Zhao
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, P.R. China
| | - Jing Yu
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, P.R. China
| | - Shicai Xu
- Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, P.R. China
| | - Baoyuan Man
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, P.R. China
| | - Chao Zhang
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, P.R. China
| | - Zhen Li
- Shandong Provincial Engineering and Technical Center of Light Manipulation, School of Physics and Electronics, Shandong Normal University, Jinan 250014, P.R. China
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8
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Habimana JDD, Huang R, Muhoza B, Kalisa YN, Han X, Deng W, Li Z. Mechanistic insights of CRISPR/Cas nucleases for programmable targeting and early-stage diagnosis: A review. Biosens Bioelectron 2022; 203:114033. [DOI: 10.1016/j.bios.2022.114033] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 01/19/2022] [Accepted: 01/20/2022] [Indexed: 12/21/2022]
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9
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Almohammed S, Fularz A, Kanoun MB, Goumri-Said S, Aljaafari A, Rodriguez BJ, Rice JH. Structural Transition-Induced Raman Enhancement in Bioinspired Diphenylalanine Peptide Nanotubes. ACS APPLIED MATERIALS & INTERFACES 2022; 14:12504-12514. [PMID: 35254049 PMCID: PMC8931724 DOI: 10.1021/acsami.1c22770] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 02/18/2022] [Indexed: 06/14/2023]
Abstract
Semiconducting materials are increasingly proposed as alternatives to noble metal nanomaterials to enhance Raman scattering. We demonstrate that bioinspired semiconducting diphenylalanine peptide nanotubes annealed through a reported structural transition can support Raman detection of 10-7 M concentrations for a range of molecules including mononucleotides. The enhancement is attributed to the introduction of electronic states below the conduction band that facilitate charge transfer to the analyte molecule. These results show that organic semiconductor-based materials can serve as platforms for enhanced Raman scattering for chemical sensing. As the sensor is metal-free, the enhancement is achieved without the introduction of electromagnetic surface-enhanced Raman spectroscopy.
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Affiliation(s)
- Sawsan Almohammed
- School
of Physics, University College Dublin, Belfield, Dublin D04 V1W8, Ireland
- Conway
Institute of Biomolecular and Biomedical Research, University College,
Dublin, Belfield, Dublin D04 V1W8, Ireland
| | - Agata Fularz
- School
of Physics, University College Dublin, Belfield, Dublin D04 V1W8, Ireland
| | - Mohammed Benali Kanoun
- Department
of Physics, College of Science, King Faisal
University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia
| | - Souraya Goumri-Said
- Physics
Department, College of Science and General Studies, Alfaisal University, P.O. Box 50927, Riyadh 11533, Saudi Arabia
| | - Abdullah Aljaafari
- Department
of Physics, College of Science, King Faisal
University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia
| | - Brian J. Rodriguez
- School
of Physics, University College Dublin, Belfield, Dublin D04 V1W8, Ireland
- Conway
Institute of Biomolecular and Biomedical Research, University College,
Dublin, Belfield, Dublin D04 V1W8, Ireland
| | - James H. Rice
- School
of Physics, University College Dublin, Belfield, Dublin D04 V1W8, Ireland
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10
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Zheng R, Li J, Zhu R, Wang R, Feng X, Chen Z, Wei W, Yang D, Chen H. Enhanced Cr(VI) reduction on natural chalcopyrite mineral modulated by degradation intermediates of RhB. JOURNAL OF HAZARDOUS MATERIALS 2022; 423:127206. [PMID: 34544002 DOI: 10.1016/j.jhazmat.2021.127206] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 09/02/2021] [Accepted: 09/08/2021] [Indexed: 06/13/2023]
Abstract
Wastewater with complex compositions of both heavy metals and organic pollutants is of critical environmental and socioeconomic threat worldwide, which urgently requires feasible remediation technologies to target this challenge. In this study, natural chalcopyrite (CuFeS2, NCP), the most abundant copper-based mineral in the Earth's crust, has been discovered to be a heterogeneous catalyst that can activate peroxydisulfate (PDS) for the simultaneous degradation of organic pollutant Rhodamine B (RhB) and reduction of hexavalent chromium (Cr(VI)). Batch experimental results indicate that both RhB and Cr(VI) could be simultaneously removed under a near-neutral condition in NCP/PDS combined system. The radicals SO4•- and •OH generated from PDS activation are the main oxidative species detected by electron paramagnetic resonance (EPR) spectroscopy. SO4•- acted as a predominant role in RhB degradation, while Cr(VI) reduction is mainly attributed to the oxidization of S2- and S22- species on NCP surface, as well as the photoreduction performance of NCP, which could be enhanced by the intermediates generated from RhB degradation. Density functional theory (DFT) calculation results disclose that Fe is the critical catalytic site for PDS activation. This work demonstrates a user-friendly strategy for remediation of complex wastewater containing both heavy metal and organic pollutants by combining photoreduction and advanced oxidation processes (AOPs) with natural minerals. It paves a way for wastewater treatment by utilizing low-cost natural abundant minerals as catalysts.
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Affiliation(s)
- Renji Zheng
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology, Shenzhen 518055, China; National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Jing Li
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology, Shenzhen 518055, China
| | - Runliang Zhu
- Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou 510640, China
| | - Ranhao Wang
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xuezhen Feng
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhijie Chen
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology, Shenzhen 518055, China
| | - Wenfei Wei
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology, Shenzhen 518055, China
| | - Dazhong Yang
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology, Shenzhen 518055, China
| | - Hong Chen
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology, Shenzhen 518055, China.
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11
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Mukunzi D, Habimana JDD, Li Z, Zou X. Mycotoxins detection: view in the lens of molecularly imprinted polymer and nanoparticles. Crit Rev Food Sci Nutr 2022; 63:6034-6068. [PMID: 35048762 DOI: 10.1080/10408398.2022.2027338] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Molecularly imprinted polymers (MIPs) are tailor-made functional composites which selectively recognize and bind the target molecule of interest. MIP composites are products of the massively cross-linked polymer matrices, generated via polymerization, with bio-inspired recognition cavities that are morphologically similar in size, shape and spatial patterns to the target conformation. These features have enabled researchers to expand the field of molecular recognition, more specifically for target with peculiar requirements. Nevertheless, MIPs alone are characterized with weak sensitivity. Besides, nanoparticles (NPs) are remarkably sensitive but also suffer from poor selectivity. Intriguingly, the combination of the two results in a highly sensitive and selective MIP composite. For instance, the conjugation of different functional NPs with MIPs can generate new flexible target capture tools, either a dynamic sensor or a novel drug delivery system. In this regard, although the technology is considered an established and feasible approach, it is still perceived as a burgeoning technology for various fields, which makes it unceasingly worthy reviewing. Therefore, in this review, we attempt to give an update on various custom-made biosensors based on MIPs in combination with various NPs for the detection of mycotoxins, the toxic secondary metabolites of fungi. We first summarize the classification, prevalence, and toxicological characteristics of common mycotoxins. Next, we provide an overview of MIP composites and their characterization, and then segment the role of NPs with respect to common types of MIP-based sensors. At last, conclusions and outlook are discussed.
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Affiliation(s)
- Daniel Mukunzi
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Jean de Dieu Habimana
- Key Laboratory of Regenerative Biology, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Zhiyuan Li
- Key Laboratory of Regenerative Biology, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xiaobo Zou
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
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12
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Li P, Zhang Y, Gong P, Liu Y, Feng W, Yang H. Photoinduced atom transfer radical polymerization combined with click chemistry for highly sensitive detection of tobacco mosaic virus RNA. Talanta 2021; 235:122803. [PMID: 34517661 DOI: 10.1016/j.talanta.2021.122803] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 07/24/2021] [Accepted: 08/11/2021] [Indexed: 10/20/2022]
Abstract
An electrochemical biosensor for highly sensitive detection of tobacco mosaic virus (TMV) RNA (tRNA) based on click chemistry and photoinduced atom transfer radical polymerization (photoATRP) is developed for the first time. Herein, tRNA is recognized and captured by hairpin DNA immobilized on the gold electrode surface by Au-S self-assembly. Propyl 2-bromoisobutyrate (PBIB), a photoATRP initiator containing an alkyne group, is conjugated to the azide group of hairpin DNA via a Cu(I)-catalyzed azidoalkyl cyclization reaction (CuAAC). Under the irradiation of 470 nm blue light, photoATRP is activated by the photoredox catalyst (eosin Y, EY), resulting in the formation of a large number of electroactive probes (ferrocenylmethyl methacrylate, FMMA), which significantly amplifies the signal. Under the optimal experimental parameters, the strategy has a wide linear detection (0.1 pM-10 nM) (R2 = 0.995) with a limit of detection (LOD) as low as 3.5 fM. In addition, the biosensor also exhibited good selectivity for mismatched bases, excellent stability and reproducibility. Moreover, satisfactory result was achieved when the biosensor was applied to the detection of tRNA from healthy rehmannia total RNA extracts, which demonstrates the great potential of the method in the practical detection of TMV.
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Affiliation(s)
- Peipei Li
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China
| | - Yaping Zhang
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China
| | - Pengfei Gong
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China
| | - Yanju Liu
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China.
| | - Weisheng Feng
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China.
| | - Huaixia Yang
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China.
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13
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Almohammed S, K. Orhan O, Daly S, O’Regan DD, Rodriguez BJ, Casey E, Rice JH. Electric Field Tunability of Photoluminescence from a Hybrid Peptide-Plasmonic Metal Microfabricated Chip. JACS AU 2021; 1:1987-1995. [PMID: 35574042 PMCID: PMC8611722 DOI: 10.1021/jacsau.1c00323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Indexed: 06/14/2023]
Abstract
Enhancement of fluorescence through the application of plasmonic metal nanostructures has gained substantial research attention due to the widespread use of fluorescence-based measurements and devices. Using a microfabricated plasmonic silver nanoparticle-organic semiconductor platform, we show experimentally the enhancement of fluorescence intensity achieved through electro-optical synergy. Fluorophores located sufficiently near silver nanoparticles are combined with diphenylalanine nanotubes (FFNTs) and subjected to a DC electric field. It is proposed that the enhancement of the fluorescence signal arises from the application of the electric field along the length of the FFNTs, which stimulates the pairing of low-energy electrons in the FFNTs with the silver nanoparticles, enabling charge transport across the metal-semiconductor template that enhances the electromagnetic field of the plasmonic nanoparticles. Many-body perturbation theory calculations indicate that, furthermore, the charging of silver may enhance its plasmonic performance intrinsically at particular wavelengths, through band-structure effects. These studies demonstrate for the first time that field-activated plasmonic hybrid platforms can improve fluorescence-based detection beyond using plasmonic nanoparticles alone. In order to widen the use of this hybrid platform, we have applied it to enhance fluorescence from bovine serum albumin and Pseudomonas fluorescens. Significant enhancement in fluorescence intensity was observed from both. The results obtained can provide a reference to be used in the development of biochemical sensors based on surface-enhanced fluorescence.
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Affiliation(s)
- Sawsan Almohammed
- School
of Physics, University College Dublin, Belfield, Dublin D04 V1W8, Ireland
- Conway
Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin D04 V1W8, Ireland
| | - Okan K. Orhan
- School
of Physics, AMBER, and CRANN Institute, Trinity College Dublin, The University of Dublin, Dublin D02 PN40, Ireland
| | - Sorcha Daly
- School
of Chemical and Bioprocess Engineering, University College Dublin, Belfield, Dublin D04 V1W8, Ireland
| | - David D. O’Regan
- School
of Physics, AMBER, and CRANN Institute, Trinity College Dublin, The University of Dublin, Dublin D02 PN40, Ireland
| | - Brian J. Rodriguez
- School
of Physics, University College Dublin, Belfield, Dublin D04 V1W8, Ireland
- Conway
Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin D04 V1W8, Ireland
| | - Eoin Casey
- School
of Chemical and Bioprocess Engineering, University College Dublin, Belfield, Dublin D04 V1W8, Ireland
| | - James H. Rice
- School
of Physics, University College Dublin, Belfield, Dublin D04 V1W8, Ireland
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14
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Narayan B, Herbert C, Rodriguez BJ, Brooks BR, Buchete NV. Replica Exchange Molecular Dynamics of Diphenylalanine Amyloid Peptides in Electric Fields. J Phys Chem B 2021; 125:5233-5242. [PMID: 33990140 PMCID: PMC8279545 DOI: 10.1021/acs.jpcb.1c01939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The self-assembling propensity of amyloid peptides such as diphenylalanine (FF) allows them to form ordered, nanoscale structures, with biocompatible properties important for biomedical applications. Moreover, piezoelectric properties allow FF molecules and their aggregates (e.g., FF nanotubes) to be aligned in a controlled way by the application of external electric fields. However, while the behavior of FF nanostructures emerges from the biophysical properties of the monomers, the detailed responses of individual peptides to both temperature and electric fields are not fully understood. Here, we study the temperature-dependent conformational dynamics of FF peptides solvated in explicit water molecules, an environment relevant to biomedical applications, by using an enhanced sampling method, replica exchange molecular dynamics (REMD), in conjunction with applied electric fields. Our simulations highlight and overcome possible artifacts that may occur during the setup of REMD simulations of explicitly solvated peptides in the presence of external electric fields, a problem particularly important in the case of short peptides such as FF. The presence of the external fields could overstabilize certain conformational states in one or more REMD replicas, leading to distortions of the underlying potential energy distributions observed at each temperature. This can be overcome by correcting the REMD initial conditions to include the lower-energy conformations induced by the external field. We show that the converged REMD data can be analyzed using a Markovian description of conformational states and show that a rather complex, 3-state, temperature-dependent conformational dynamics in the absence of electric fields collapses to only one of these states in the presence of the electric fields. These details on the temperature- and electric-field-dependent thermodynamic and kinetic properties of small FF amyloid peptides can be useful in understanding and devising new methods to control their aggregation-prone biophysical properties and, possibly, the structural and biophysical properties of FF molecular nanostructures.
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Affiliation(s)
- Brajesh Narayan
- School of Physics, University College Dublin, Belfield, Dublin 4, Ireland.,Institute for Discovery, University College Dublin, Belfield, Dublin 4, Ireland
| | - Colm Herbert
- School of Physics, University College Dublin, Belfield, Dublin 4, Ireland.,Institute for Discovery, University College Dublin, Belfield, Dublin 4, Ireland
| | - Brian J Rodriguez
- School of Physics, University College Dublin, Belfield, Dublin 4, Ireland.,Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
| | - Bernard R Brooks
- Laboratory of Computational Biology, NHLBI, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Nicolae-Viorel Buchete
- School of Physics, University College Dublin, Belfield, Dublin 4, Ireland.,Institute for Discovery, University College Dublin, Belfield, Dublin 4, Ireland
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15
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Improved photothermal therapy of brain cancer cells and photogeneration of reactive oxygen species by biotin conjugated gold photoactive nanoparticles. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 215:112102. [PMID: 33388605 DOI: 10.1016/j.jphotobiol.2020.112102] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 10/15/2020] [Accepted: 12/09/2020] [Indexed: 12/20/2022]
Abstract
Herein, we report on the design and development of functionalized acrylic polymeric nanoparticles with Spiropyrans (SPs) and imidazole moieties via superficial polymerizations. Then, Au3+ ions were immobilized and reduced on their surface to obtain photoresponsive gold-decorated polymer nanoparticles(Au-NPs). The synthesized Au-NPs were surface adapted with biotin as specific targeting tumor penetration cells and enhance the intercellular uptake through the endocytosis. FT-IR (Fourier-transform Infrared Spectroscopy), UV-Vis (Ultra Violet-Visible Spectrophotometer), EDS (Energy Dispersive X-Ray Spectroscopy), SEM (Scanning Electron Microscope) and HR-TEM (High-resolution transmission electron microscopy) descriptions were engaged to illustrate their spectral analysis and morphological examinations of Bt@Au-NPs. Fluorescence microscopy images of cellular uptake descriptions and ICP-MS (Inductively coupled plasma mass spectrometry) investigation established the cell lines labeling ability and enhanced targetting efficacy of biotin-conjugated Au-NPs (Bt@Au-NPs) toward C6 glioma cells (brain cancer cells) with 72.5% cellular uptake relative to 30.2% for non-conjugated lone. These were further established through intracellular ROS examinations and in vitro cytotoxicity investigation on the C6 glioma cell line. The solid surface plasmon absorptions of the Au-NPs and Bt@Au-NPs providing raised photothermal therapy under UV irradiation. The synthesized multifunctional Bt@Au-NPs with an inclusive combination of potential resources presented encouraging nanoprobe with targeting capability, improved photodynamic and photothermal cancer therapy.
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16
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Almohammed S, Fularz A, Zhang F, Alvarez-Ruiz D, Bello F, O'Regan DD, Rodriguez BJ, Rice JH. Flexing Piezoelectric Diphenylalanine-Plasmonic Metal Nanocomposites to Increase SERS Signal Strength. ACS APPLIED MATERIALS & INTERFACES 2020; 12:48874-48881. [PMID: 33054174 DOI: 10.1021/acsami.0c15498] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Piezoelectric quasi-1D peptide nanotubes and plasmonic metal nanoparticles are combined to create a flexible and self-energized surface-enhanced Raman spectroscopy (SERS) substrate that strengthens SERS signal intensities by over an order of magnitude compared to an unflexed substrate. The platform is used to sense bovine serum albumin, lysozyme, glucose, and adenine. Finite-element electromagnetic modeling indicates that the signal enhancement results from piezoelectric-induced charge, which is mechanically activated via substrate bending. The results presented here open the possibility of using peptide nanotubes on conformal substrates for in situ SERS detection.
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Affiliation(s)
- Sawsan Almohammed
- School of Physics, University College Dublin, Belfield, Dublin 4, Ireland
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
| | - Agata Fularz
- School of Physics, University College Dublin, Belfield, Dublin 4, Ireland
| | - Fengyuan Zhang
- School of Physics, University College Dublin, Belfield, Dublin 4, Ireland
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
| | - Diana Alvarez-Ruiz
- School of Physics, University College Dublin, Belfield, Dublin 4, Ireland
| | - Frank Bello
- School of Physics, AMBER and CRANN Institute, Trinity College Dublin, The University of Dublin, Dublin 2, Ireland
| | - David D O'Regan
- School of Physics, AMBER and CRANN Institute, Trinity College Dublin, The University of Dublin, Dublin 2, Ireland
| | - Brian J Rodriguez
- School of Physics, University College Dublin, Belfield, Dublin 4, Ireland
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
| | - James H Rice
- School of Physics, University College Dublin, Belfield, Dublin 4, Ireland
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17
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Zhang YL, Chang R, Duan HZ, Chen YX. Metal ion and light sequentially induced sol-gel-sol transition of a responsive peptide-hydrogel. SOFT MATTER 2020; 16:7652-7658. [PMID: 32797141 DOI: 10.1039/d0sm00442a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We developed a new responsive peptide hydrogel FmocFFpSC(oNB)-PEG, which could achieve gel formation induced by calcium ions and sequential dissolution stimulated by light. It provides a potential delivery system for the efficient encapsulation of drugs and their controlled release in a spatial and temporal way.
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Affiliation(s)
- Yun-Lai Zhang
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China.
| | - Rong Chang
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China.
| | - Hua-Zhen Duan
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China.
| | - Yong-Xiang Chen
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China.
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18
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Ge Q, Feng X, Wang R, Zheng R, Luo S, Duan L, Ji Y, Lin J, Chen H. Mixed Redox-Couple-Involved Chalcopyrite Phase CuFeS 2 Quantum Dots for Highly Efficient Cr(VI) Removal. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:8022-8031. [PMID: 32412745 DOI: 10.1021/acs.est.0c01018] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Iron-based nanosized ecomaterials for efficient Cr(VI) removal are of great interest to environmental chemists. Herein, inspired by the "mixed redox-couple" cations involved in the crystal structure and the quantum confinement effects resulting from the particle size, a novel type of iron-based ecomaterial, semiconducting chalcopyrite quantum dots (QDs), was developed and used for Cr(VI) removal. A high removal capacity up to 720 mg/g was achieved under optimal pH conditions, which is superior to those of the state-of-the-art nanomaterials for Cr(VI) removal. The mechanism of Cr(VI) removal was elucidated down to an atomic scale by combining comprehensive characterization techniques with adsorption kinetic experiments and DFT calculations. The experimental results revealed that the material was a good electron donor semiconductor attributed to the existence of "mixed redox couple of Cu(I)-S-Fe(III)" in the crystal structure. With the size-dependent quantum confinement effect and the high surface area, the semiconducting chalcopyrite QDs could effectively remove Cr(VI) from aqueous solution through a syngenetic photocatalytic reduction and adsorption mechanism. This study not only reports the design histogram of the iron-based CuFeS2 QD ecomaterial for efficient Cr(VI) removal but also paves the way for understanding the atomic-scale mechanism behind the syngenetic effects of using the QD semiconducting material for Cr(VI) removal.
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Affiliation(s)
- Qiuyue Ge
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
- Department of Physics, Shanghai University of Electric Power, Shanghai 200090, China
| | - Xuezhen Feng
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ranhao Wang
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Renji Zheng
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Siyuan Luo
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Lele Duan
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yongfei Ji
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Jia Lin
- Department of Physics, Shanghai University of Electric Power, Shanghai 200090, China
| | - Hong Chen
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
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19
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Zhang H, Wei J, Zhang XG, Zhang YJ, Radjenovica PM, Wu DY, Pan F, Tian ZQ, Li JF. Plasmon-Induced Interfacial Hot-Electron Transfer Directly Probed by Raman Spectroscopy. Chem 2020. [DOI: 10.1016/j.chempr.2019.12.015] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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20
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Liu Q, Jian L, Liu R, Yang H, Kong J, Zhang X. Metal-Free Photoinduced Atom Transfer Radical Polymerization for Highly Sensitive Detection of Lung Cancer DNA. Chemistry 2020; 26:1633-1639. [PMID: 31724757 DOI: 10.1002/chem.201904271] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 11/13/2019] [Indexed: 11/12/2022]
Abstract
Convenient and sensitive detection of biomolecules is of great significance to disease diagnosis. In this work, a metal-free photoinduced atom transfer radical polymerization (photoATRP) by a reductive quenching pathway as a novel strategy is applied to achieve lung cancer DNA detection. Thiolated PNA is exploited to specifically recognize target DNA, and the initiator of photoATRP is linked to the electrode surface via phosphate-Zr4+ -carboxylate. Under the excitation of blue light, the reductive quenching pathway is activated with eosin Y (EY) as photoredox catalyst and N,N,N',N'',N'-pentamethyldiethylenetriamine (PMDETA) as electron donor, and numerous polymeric chains are formed. Under optimal conditions, the linear range of this strategy is from 0.1 pm to 10 nm (R2 =0.989) with a limit of detection (LOD) of 1.4 fm (14 zmol in 10 μL). The variety of possible light sources for photoATRP and simple operation endow this biosensor with great potential for practical applications.
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Affiliation(s)
- Qianrui Liu
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Lihe Jian
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450008, P. R. China
| | - Ruiqian Liu
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Huaixia Yang
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450008, P. R. China
| | - Jinming Kong
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Xueji Zhang
- School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, Guangdong, 518060, P. R. China
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21
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Lin CH, Wang PH, Wang TH, Yang LJ, Wen TC. The surface-enhanced Raman scattering detection of N-nitrosodimethylamine and N-nitrosodiethylamine via gold nanorod arrays with a chemical linkage of zwitterionic copolymer. NANOSCALE 2020; 12:1075-1082. [PMID: 31845933 DOI: 10.1039/c9nr09404k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Due to the emerging issue of the contamination of sartan medicines and drinking water with N-nitrosodimethylamine (NDMA) and/or N-nitrosodiethylamine (NDEA), the detection of NDMA/NDEA has become an important theme. In this study, we utilized the focused ion beam (FIB) technique to fabricate gold nanorods (Au NRs) and Surface-enhanced Raman Scattering (SERS) substrates and modified them with 1,2-ethanedithiol to quench the high luminescence excitation background signals derived from the high density of localized surface plasmon resonance. To improve the surface hydrophilicity, zwitterionic copolymer PGMA-r-PSBMA was grafted onto the nanosurface of Au NRs, which was confirmed by contact angle analysis and AFM. Raman spectra of the copolymer were observed to confirm the successful grafting of Au NRs, which was also corroborated by TEM and SEM. The Au NRs could easily trap the small polar NDMA and NDEA molecules in aqueous solution due to strong zwitterionic hydrophilicity. Furthermore, the self-association of the anions and cations of the polymeric chain grafted in the hot spot zone assisted in trapping the NDMA/NDEA polar molecules. The Raman scattering cross-section of NDMA/NDEA molecules could be enhanced through the chemical linkage of 1,2-ethanedithiol and the self-association behavior of the zwitterionic copolymer. Accordingly, for the first time, we detected the characteristic peaks of NDMA/NDEA through SERS with detection limit of 10-8 M for both molecules.
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Affiliation(s)
- Chen-Hsueh Lin
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan.
| | - Po-Hsin Wang
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan.
| | - Tsang-Hsien Wang
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan.
| | - Li-Jung Yang
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan.
| | - Ten-Chin Wen
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan. and Center of Applied Nanomedicine, National Cheng Kung University, Tainan 70101, Taiwan
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