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Seo D, Seong S, Kim H, Oh HS, Lee JH, Kim H, Kim YO, Maeda S, Chikami S, Hayashi T, Noh J. Molecular Self-Assembly and Adsorption Structure of 2,2'-Dipyrimidyl Disulfides on Au(111) Surfaces. Molecules 2024; 29:846. [PMID: 38398598 PMCID: PMC10892263 DOI: 10.3390/molecules29040846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 02/08/2024] [Accepted: 02/12/2024] [Indexed: 02/25/2024] Open
Abstract
The effects of solution concentration and pH on the formation and surface structure of 2-pyrimidinethiolate (2PymS) self-assembled monolayers (SAMs) on Au(111) via the adsorption of 2,2'-dipyrimidyl disulfide (DPymDS) were examined using scanning tunneling microscopy (STM) and X-ray photoelectron spectroscopy (XPS). STM observations revealed that the formation and structural order of 2PymS SAMs were markedly influenced by the solution concentration and pH. 2PymS SAMs formed in a 0.01 mM ethanol solution were mainly composed of a more uniform and ordered phase compared with those formed in 0.001 mM or 1 mM solutions. SAMs formed in a 0.01 mM solution at pH 2 were composed of a fully disordered phase with many irregular and bright aggregates, whereas SAMs formed at pH 7 had small ordered domains and many bright islands. As the solution pH increased from pH 7 to pH 12, the surface morphology of 2PymS SAMs remarkably changed from small ordered domains to large ordered domains, which can be described as a (4√2 × 3)R51° packing structure. XPS measurements clearly showed that the adsorption of DPymDS on Au(111) resulted in the formation of 2PymS (thiolate) SAMs via the cleavage of the disulfide (S-S) bond in DPymDS, and most N atoms in the pyrimidine rings existed in the deprotonated form. The results herein will provide a new insight into the molecular self-assembly behaviors and adsorption structures of DPymDS molecules on Au(111) depending on solution concentration and pH.
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Affiliation(s)
- Dongjin Seo
- Department of Chemistry, Hanyang University, Seoul 04763, Republic of Korea; (D.S.); (S.S.); (H.K.); (H.S.O.); (J.H.L.); (H.K.); (Y.O.K.)
| | - Sicheon Seong
- Department of Chemistry, Hanyang University, Seoul 04763, Republic of Korea; (D.S.); (S.S.); (H.K.); (H.S.O.); (J.H.L.); (H.K.); (Y.O.K.)
| | - Haeri Kim
- Department of Chemistry, Hanyang University, Seoul 04763, Republic of Korea; (D.S.); (S.S.); (H.K.); (H.S.O.); (J.H.L.); (H.K.); (Y.O.K.)
| | - Hyun Su Oh
- Department of Chemistry, Hanyang University, Seoul 04763, Republic of Korea; (D.S.); (S.S.); (H.K.); (H.S.O.); (J.H.L.); (H.K.); (Y.O.K.)
| | - Jun Hyeong Lee
- Department of Chemistry, Hanyang University, Seoul 04763, Republic of Korea; (D.S.); (S.S.); (H.K.); (H.S.O.); (J.H.L.); (H.K.); (Y.O.K.)
| | - Hongki Kim
- Department of Chemistry, Hanyang University, Seoul 04763, Republic of Korea; (D.S.); (S.S.); (H.K.); (H.S.O.); (J.H.L.); (H.K.); (Y.O.K.)
| | - Yeon O Kim
- Department of Chemistry, Hanyang University, Seoul 04763, Republic of Korea; (D.S.); (S.S.); (H.K.); (H.S.O.); (J.H.L.); (H.K.); (Y.O.K.)
| | - Shoichi Maeda
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Yokohama 226-8503, Japan; (S.M.); (S.C.)
| | - Shunta Chikami
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Yokohama 226-8503, Japan; (S.M.); (S.C.)
| | - Tomohiro Hayashi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Yokohama 226-8503, Japan; (S.M.); (S.C.)
| | - Jaegeun Noh
- Department of Chemistry, Hanyang University, Seoul 04763, Republic of Korea; (D.S.); (S.S.); (H.K.); (H.S.O.); (J.H.L.); (H.K.); (Y.O.K.)
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Yokohama 226-8503, Japan; (S.M.); (S.C.)
- Research Institute for Convergence of Basic Science, Hanyang University, Seoul 04763, Republic of Korea
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Leong SX, Tan EX, Han X, Luhung I, Aung NW, Nguyen LBT, Tan SY, Li H, Phang IY, Schuster S, Ling XY. Surface-Enhanced Raman Scattering-Based Surface Chemotaxonomy: Combining Bacteria Extracellular Matrices and Machine Learning for Rapid and Universal Species Identification. ACS NANO 2023; 17:23132-23143. [PMID: 37955967 DOI: 10.1021/acsnano.3c09101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
Rapid, universal, and accurate identification of bacteria in their natural states is necessary for on-site environmental monitoring and fundamental microbial research. Surface-enhanced Raman scattering (SERS) spectroscopy emerges as an attractive tool due to its molecule-specific spectral fingerprinting and multiplexing capabilities, as well as portability and speed of readout. Here, we develop a SERS-based surface chemotaxonomy that uses bacterial extracellular matrices (ECMs) as proxy biosignatures to hierarchically classify bacteria based on their shared surface biochemical characteristics to eventually identify six distinct bacterial species at >98% classification accuracy. Corroborating with in silico simulations, we establish a three-way inter-relation between the bacteria identity, their ECM surface characteristics, and their SERS spectral fingerprints. The SERS spectra effectively capture multitiered surface biochemical insights including ensemble surface characteristics, e.g., charge and biochemical profiles, and molecular-level information, e.g., types and numbers of functional groups. Our surface chemotaxonomy thus offers an orthogonal taxonomic definition to traditional classification methods and is achieved without gene amplification, biochemical testing, or specific biomarker recognition, which holds great promise for point-of-need applications and microbial research.
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Affiliation(s)
- Shi Xuan Leong
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371
| | - Emily Xi Tan
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371
| | - Xuemei Han
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371
| | - Irvan Luhung
- Singapore Centre for Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551
| | - Ngu War Aung
- Singapore Centre for Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551
| | - Lam Bang Thanh Nguyen
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371
| | - Si Yan Tan
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371
| | - Haitao Li
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, People's Republic of China
| | - In Yee Phang
- School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Stephan Schuster
- Singapore Centre for Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551
| | - Xing Yi Ling
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371
- School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
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3
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Kichijo R, Miyajima N, Ogawa D, Sugimori H, Wang KH, Imura Y, Kawai T. Water-phase synthesis of Au and Au-Ag nanowires and their SERS activity. RSC Adv 2022; 12:28937-28943. [PMID: 36320732 PMCID: PMC9551676 DOI: 10.1039/d2ra05496e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 10/06/2022] [Indexed: 11/06/2022] Open
Abstract
Metal nanowires (NWs) with a diameter of a few nanometers have attracted considerable attention as a promising one-dimensional nanomaterial due to their inherent flexibility and conductive properties and their weak plasmon absorption in the visible region. In a previous paper, we reported the synthesis of ultrathin 1.8 nm-diameter Au NWs using toluene-solubilized aqueous solutions of a long-chain amidoamine derivative (C18AA). This study investigates the effect of different organic solvents solubilized in C18AA aqueous solutions on the morphology of the Au products and demonstrates that solubilizing methylcyclohexane yields thick 2.7 nm-diameter Au NWs and 3.3 nm-diameter Au-Ag alloy NWs. Further, the surface-enhanced Raman scattering sensitivity of ultrathin Au NWs, thick Au NWs, and thick Au-Ag alloy NWs were assessed using 4-mercaptopyridine and found that their enhancement factors are 104-105 and the order is Au-Ag NWs > thick Au NWs > ultrathin Au NWs.
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Affiliation(s)
- Ryota Kichijo
- Faculty of Engineering, Tokyo University of Science6-3-1 Niijuku, Katsushika-ku125-8585TokyoJapan
| | - Naoya Miyajima
- Faculty of Engineering, Tokyo University of Science6-3-1 Niijuku, Katsushika-ku125-8585TokyoJapan
| | - Daisuke Ogawa
- Tokyo Metropolitan Industrial Technology Research Institute (TIRI)2-4-10 Aomi, Koto-ku135-0064TokyoJapan
| | - Hirokazu Sugimori
- Tokyo Metropolitan Industrial Technology Research Institute (TIRI)2-4-10 Aomi, Koto-ku135-0064TokyoJapan
| | - Ke-Hsuan Wang
- Faculty of Engineering, Tokyo University of Science6-3-1 Niijuku, Katsushika-ku125-8585TokyoJapan
| | - Yoshiro Imura
- Faculty of Engineering, Tokyo University of Science6-3-1 Niijuku, Katsushika-ku125-8585TokyoJapan
| | - Takeshi Kawai
- Faculty of Engineering, Tokyo University of Science6-3-1 Niijuku, Katsushika-ku125-8585TokyoJapan
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Nguyen LBT, Leong YX, Koh CSL, Leong SX, Boong SK, Sim HYF, Phan-Quang GC, Phang IY, Ling XY. Inducing Ring Complexation for Efficient Capture and Detection of Small Gaseous Molecules Using SERS for Environmental Surveillance. Angew Chem Int Ed Engl 2022; 61:e202207447. [PMID: 35672258 DOI: 10.1002/anie.202207447] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Indexed: 01/13/2023]
Abstract
Gas-phase surface-enhanced Raman scattering (SERS) remains challenging due to poor analyte affinity to SERS substrates. The reported use of capturing probes suffers from concurrent inconsistent signals and long response time due to the formation of multiple potential probe-analyte interaction orientations. Here, we demonstrate the use of multiple non-covalent interactions for ring complexation to boost the affinity of small gas molecules, SO2 and NO2 , to our SERS platform, achieving rapid capture and multiplex detection down to 100 ppm. Experimental and in-silico studies affirm stable ring complex formation, and kinetic investigations reveal a 4-fold faster response time compared to probes without stable ring complexation capability. By synergizing spectral concatenation and support vector machine regression, we achieve 91.7 % accuracy for multiplex quantification of SO2 and NO2 in excess CO2 , mimicking real-life exhausts. Our platform shows immense potential for on-site exhaust and air quality surveillance.
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Affiliation(s)
- Lam Bang Thanh Nguyen
- Division of Chemistry and Biological Chemistry, School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Yong Xiang Leong
- Division of Chemistry and Biological Chemistry, School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Charlynn Sher Lin Koh
- Division of Chemistry and Biological Chemistry, School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Shi Xuan Leong
- Division of Chemistry and Biological Chemistry, School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Siew Kheng Boong
- Division of Chemistry and Biological Chemistry, School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Howard Yi Fan Sim
- Division of Chemistry and Biological Chemistry, School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Gia Chuong Phan-Quang
- Division of Chemistry and Biological Chemistry, School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - In Yee Phang
- Division of Chemistry and Biological Chemistry, School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Xing Yi Ling
- Division of Chemistry and Biological Chemistry, School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
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5
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Nguyen LBT, Leong YX, Koh CSL, Leong SX, Boong SK, Sim HYF, Phan-Quang GC, Phang IY, Ling XY. Inducing ring complexation for efficient capturing and detection of small gaseous molecules using SERS for environmental surveillance. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207447] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Yong Xiang Leong
- Nanyang Technological University Chemistry and Biological Chemistry SINGAPORE
| | | | - Shi Xuan Leong
- Nanyang Technological University Chemistry and Biological Chemistry SINGAPORE
| | - Siew Kheng Boong
- Nanyang Technological University Chemistry and Biological Chemistry SINGAPORE
| | - Howard Yi Fan Sim
- Nanyang Technological University Chemistry and Biological Chemistry SINGAPORE
| | | | - In Yee Phang
- Nanyang Technological University Chemistry and Biological Chemistry SINGAPORE
| | - Xing Yi Ling
- Nanyang Technological University Division of Chemistry & Biological Chemistry 21 Nanyang Link,Nanyang Technological University, 637371 Singapore SINGAPORE
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6
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Liu J, Liu Z, Wang W, Tian Y. Real-time Tracking and Sensing of Cu + and Cu 2+ with a Single SERS Probe in the Live Brain: Toward Understanding Why Copper Ions Were Increased upon Ischemia. Angew Chem Int Ed Engl 2021; 60:21351-21359. [PMID: 34228388 DOI: 10.1002/anie.202106193] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/25/2021] [Indexed: 11/07/2022]
Abstract
The imbalance of Cu+ and Cu2+ in the brain is closely related to neurodegenerative diseases. However, it still lacks of effective analytical methods for simultaneously determining the concentrations of Cu+ and Cu2+ . Herein, we created a novel SERS probe (CuSP) to real-time track and accurately quantify extracellular concentrations of Cu+ and Cu2+ in the live brain. The present CuSP probe demonstrated specific ability for recognition of Cu+ and Cu2+ in a dual-recognition mode. Then, a microarray consisting of 8 CuSP probes with high tempo-spatial resolution and good accuracy was constructed for tracking and simultaneously biosensing of Cu+ and Cu2+ in the cerebral cortex of living brain. Using our powerful tool, it was found that that the concentrations of Cu2+ and Cu+ were increased by ≈4.26 and ≈1.80 times upon ischemia, respectively. Three routes were first discovered for understanding the mechanisms of the increased concentrations of Cu+ and Cu2+ during ischemia.
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Affiliation(s)
- Jiaqi Liu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Dongchuan Road 500, Shanghai, 200241, China
| | - Zhichao Liu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Dongchuan Road 500, Shanghai, 200241, China
| | - Weikang Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Dongchuan Road 500, Shanghai, 200241, China
| | - Yang Tian
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Dongchuan Road 500, Shanghai, 200241, China
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7
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Liu J, Liu Z, Wang W, Tian Y. Real‐time Tracking and Sensing of Cu
+
and Cu
2+
with a Single SERS Probe in the Live Brain: Toward Understanding Why Copper Ions Were Increased upon Ischemia. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106193] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jiaqi Liu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University Dongchuan Road 500 Shanghai 200241 China
| | - Zhichao Liu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University Dongchuan Road 500 Shanghai 200241 China
| | - Weikang Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University Dongchuan Road 500 Shanghai 200241 China
| | - Yang Tian
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University Dongchuan Road 500 Shanghai 200241 China
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8
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Benassi E, Fan H. Quantitative characterisation of the ring normal modes. Pyridine as a study case. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 246:119026. [PMID: 33070012 DOI: 10.1016/j.saa.2020.119026] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 09/19/2020] [Accepted: 09/27/2020] [Indexed: 06/11/2023]
Abstract
In the present work, the vibrational normal modes (NM) of pyridine were revisited. Quantum Chemical calculations were performed to help understand the true nature of some ring related vibrational normal modes (RNM) and how they may be correlated with the electronic structure on the ring. The 27 vibrational normal modes were decomposed into the molecular internal coordinates, and the interest was focused on 7 of them, involving the in-plane ring motion. The electronic structure was analysed through frontier Molecular Orbitals (MO), maps of Molecular Electrostatic Potential surfaces (MEPs) and Natural Bond Orbital (NBO) analysis in a dynamic manner, wherein, each vibration was scanned. The present investigation is aimed to provide the Reader with a quantitative characterisation of the RNMs of pyridine.
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Affiliation(s)
- E Benassi
- School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China.
| | - H Fan
- Chemistry Department, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan City 010000, Kazakhstan
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9
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Sukmanee T, Wongravee K, Kitahama Y, Ekgasit S, Itoh T, Pienpinijtham P, Ozaki Y. Distinguishing Enantiomers by Tip‐Enhanced Raman Scattering: Chemically Modified Silver Tip with an Asymmetric Atomic Arrangement. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005446] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Thanyada Sukmanee
- Department of Chemistry School of Science and Technology Kwansei Gakuin University 2-1 Gakuen Sanda Hyogo 669-1337 Japan
- Sensor Research Unit Department of Chemistry Faculty of Science Chulalongkorn University 254 Phayathai Rd., Pathumwan Bangkok 10330 Thailand
- National Nanotechnology Center of Advanced Structural and Functional Nanomaterials Faculty of Science Chulalongkorn University 254 Phayathai Rd., Pathumwan Bangkok 10330 Thailand
| | - Kanet Wongravee
- Sensor Research Unit Department of Chemistry Faculty of Science Chulalongkorn University 254 Phayathai Rd., Pathumwan Bangkok 10330 Thailand
- National Nanotechnology Center of Advanced Structural and Functional Nanomaterials Faculty of Science Chulalongkorn University 254 Phayathai Rd., Pathumwan Bangkok 10330 Thailand
| | - Yasutaka Kitahama
- Department of Chemistry School of Science and Technology Kwansei Gakuin University 2-1 Gakuen Sanda Hyogo 669-1337 Japan
| | - Sanong Ekgasit
- Sensor Research Unit Department of Chemistry Faculty of Science Chulalongkorn University 254 Phayathai Rd., Pathumwan Bangkok 10330 Thailand
- National Nanotechnology Center of Advanced Structural and Functional Nanomaterials Faculty of Science Chulalongkorn University 254 Phayathai Rd., Pathumwan Bangkok 10330 Thailand
| | - Tamitake Itoh
- National Institute of Advanced Industrial Science and Technology (AIST) Takamatsu Kagawa 761-0395 Japan
| | - Prompong Pienpinijtham
- Sensor Research Unit Department of Chemistry Faculty of Science Chulalongkorn University 254 Phayathai Rd., Pathumwan Bangkok 10330 Thailand
- National Nanotechnology Center of Advanced Structural and Functional Nanomaterials Faculty of Science Chulalongkorn University 254 Phayathai Rd., Pathumwan Bangkok 10330 Thailand
| | - Yukihiro Ozaki
- Department of Chemistry School of Science and Technology Kwansei Gakuin University 2-1 Gakuen Sanda Hyogo 669-1337 Japan
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10
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Leong SX, Koh LK, Koh CSL, Phan-Quang GC, Lee HK, Ling XY. In Situ Differentiation of Multiplex Noncovalent Interactions Using SERS and Chemometrics. ACS APPLIED MATERIALS & INTERFACES 2020; 12:33421-33427. [PMID: 32578974 DOI: 10.1021/acsami.0c08053] [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
Probing changes of noncovalent interactions is crucial to study the binding efficiencies and strengths of (bio)molecular complexes. While surface-enhanced Raman scattering (SERS) offers unique molecular fingerprints to examine such interactions in situ, current platforms are only able to recognize hydrogen bonds because of their reliance on manual spectral identification. Here, we differentiate multiple intermolecular interactions between two interacting species by synergizing plasmonic liquid marble-based SERS platforms, chemometrics, and density functional theory. We demonstrate that characteristic 3-mercaptobenzoic acid (probe) Raman signals have distinct peak shifts upon hydrogen bonding and ionic interactions with tert-butylamine, a model interacting species. Notably, we further quantify the contributions from each noncovalent interaction coexisting in different proportions. As a proof-of-concept, we detect and categorize biologically important nucleotide bases based on molecule-specific interactions. This will potentially be useful to study how subtle changes in biomolecular interactions affect their structural and binding properties.
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Affiliation(s)
- Shi Xuan Leong
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Li Keng Koh
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Charlynn Sher Lin Koh
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Gia Chuong Phan-Quang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Hiang Kwee Lee
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Xing Yi Ling
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
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11
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Sukmanee T, Wongravee K, Kitahama Y, Ekgasit S, Itoh T, Pienpinijtham P, Ozaki Y. Distinguishing Enantiomers by Tip‐Enhanced Raman Scattering: Chemically Modified Silver Tip with an Asymmetric Atomic Arrangement. Angew Chem Int Ed Engl 2020; 59:14564-14569. [DOI: 10.1002/anie.202005446] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/27/2020] [Indexed: 12/23/2022]
Affiliation(s)
- Thanyada Sukmanee
- Department of Chemistry School of Science and Technology Kwansei Gakuin University 2-1 Gakuen Sanda Hyogo 669-1337 Japan
- Sensor Research Unit Department of Chemistry Faculty of Science Chulalongkorn University 254 Phayathai Rd., Pathumwan Bangkok 10330 Thailand
- National Nanotechnology Center of Advanced Structural and Functional Nanomaterials Faculty of Science Chulalongkorn University 254 Phayathai Rd., Pathumwan Bangkok 10330 Thailand
| | - Kanet Wongravee
- Sensor Research Unit Department of Chemistry Faculty of Science Chulalongkorn University 254 Phayathai Rd., Pathumwan Bangkok 10330 Thailand
- National Nanotechnology Center of Advanced Structural and Functional Nanomaterials Faculty of Science Chulalongkorn University 254 Phayathai Rd., Pathumwan Bangkok 10330 Thailand
| | - Yasutaka Kitahama
- Department of Chemistry School of Science and Technology Kwansei Gakuin University 2-1 Gakuen Sanda Hyogo 669-1337 Japan
| | - Sanong Ekgasit
- Sensor Research Unit Department of Chemistry Faculty of Science Chulalongkorn University 254 Phayathai Rd., Pathumwan Bangkok 10330 Thailand
- National Nanotechnology Center of Advanced Structural and Functional Nanomaterials Faculty of Science Chulalongkorn University 254 Phayathai Rd., Pathumwan Bangkok 10330 Thailand
| | - Tamitake Itoh
- National Institute of Advanced Industrial Science and Technology (AIST) Takamatsu Kagawa 761-0395 Japan
| | - Prompong Pienpinijtham
- Sensor Research Unit Department of Chemistry Faculty of Science Chulalongkorn University 254 Phayathai Rd., Pathumwan Bangkok 10330 Thailand
- National Nanotechnology Center of Advanced Structural and Functional Nanomaterials Faculty of Science Chulalongkorn University 254 Phayathai Rd., Pathumwan Bangkok 10330 Thailand
| | - Yukihiro Ozaki
- Department of Chemistry School of Science and Technology Kwansei Gakuin University 2-1 Gakuen Sanda Hyogo 669-1337 Japan
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12
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Huang Y, Liu W, Wang D, Gong Z, Fan M. Evaluation of the intrinsic pH sensing performance of surface-enhanced Raman scattering pH probes. Microchem J 2020. [DOI: 10.1016/j.microc.2019.104565] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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13
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Chevalier RB, Dwyer JR. An Open Source, Iterative Dual-Tree Wavelet Background Subtraction Method Extended from Automated Diffraction Pattern Analysis to Optical Spectroscopy. APPLIED SPECTROSCOPY 2019; 73:1370-1379. [PMID: 31397582 DOI: 10.1177/0003702819871330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Background subtraction is a general problem in spectroscopy often addressed with application-specific techniques, or methods that introduce a variety of implementation barriers such as having to specify peak-free regions of the spectrum. An iterative dual-tree complex wavelet transform-based background subtraction method (DTCWT-IA) was recently developed for the analysis of ultrafast electron diffraction patterns. The method was designed to require minimal user intervention, to support streamlined analysis of many diffraction patterns with complex overlapping peaks and time-varying backgrounds, and is implemented in an open-source computer program. We examined the performance of DTCWT-IA for the analysis of spectra acquired by a range of optical spectroscopies including ultraviolet-visible spectroscopy (UV-Vis), X-ray photoelectron spectroscopy (XPS), and surface-enhanced Raman spectroscopy (SERS). A key benefit of the method is that the user need not specify regions of the spectrum where no peaks are expected to occur. SER spectra were used to investigate the robustness of DTCWT-IA to signal-to-noise levels in the spectrum and to user operation, specifically to two of the algorithm parameter settings: decomposition level and iteration number. The single, general DTCWT-IA implementation performs well in comparison to the different conventional approaches to background subtraction for UV-Vis, XPS, and SERS, while requiring minimal input. The method thus holds the same potential for optical spectroscopy as for ultrafast electron diffraction, namely streamlined analysis of spectra with complex distributions of peaks and varying signal levels, thus supporting real-time spectral analysis or the analysis of data acquired from different sources.
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Affiliation(s)
| | - Jason R Dwyer
- Department of Chemistry, University of Rhode Island, Kingston, RI, USA
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14
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Quinn A, You YH, McShane MJ. Hydrogel Microdomain Encapsulation of Stable Functionalized Silver Nanoparticles for SERS pH and Urea Sensing. SENSORS (BASEL, SWITZERLAND) 2019; 19:E3521. [PMID: 31408931 PMCID: PMC6720209 DOI: 10.3390/s19163521] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 07/23/2019] [Accepted: 07/25/2019] [Indexed: 12/24/2022]
Abstract
Conceptual and commercial examples of implantable sensors have been limited to a relatively small number of target analytes, with a strong focus on glucose monitoring. Recently, surface-enhanced Raman spectroscopy (SERS) pH sensors were demonstrated to track acid-producing enzymatic reactions targeting specific analytes. We show here that SERS pH tracking in the basic regime is also possible, and can be used to monitor urea concentration. To accomplish this, we developed a hydrogel consisting of polyelectrolyte multilayer microcapsules containing a SERS-sensitive pH reporter (4-mercapopyridine capped silver nanoparticles modified with bovine serum albumin). This pH sensing material exhibited a sensitive Raman scattering response to a wide range of pH from 6.5-9.7. By incorporating urease into the hydrogel matrix, the new sensor was capable of distinguishing urea concentrations of 0, 0.1, 1, and 10 mM. We also found that bovine serum albumin (BSA) prevented severe aggregation of the nanoparticle-based pH sensor, which improved sensing range and sensitivity. Furthermore, BSA safeguarded the pH sensor during the encapsulation procedure. Together, the combination of materials represents a novel approach to enabling optical sensing of reactions that generate pH changes in the basic range.
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Affiliation(s)
- Alexander Quinn
- Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Yil-Hwan You
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Michael J McShane
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX 77843, USA.
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA.
- Center for Remote Health Technologies and Systems, Texas A&M Engineering Experiment Station, College Station, TX 77843, USA.
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15
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Wattanavichean N, Gilby M, Nichols RJ, Arnolds H. Detection of Metal–Molecule–Metal Junction Formation by Surface Enhanced Raman Spectroscopy. Anal Chem 2019; 91:2644-2651. [DOI: 10.1021/acs.analchem.8b03576] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Nungnit Wattanavichean
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, United Kingdom
| | - Matthew Gilby
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, United Kingdom
| | - Richard J. Nichols
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, United Kingdom
| | - Heike Arnolds
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, United Kingdom
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