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Lourenço CB, Fava ALM, Dos Santos ÉM, de Macedo LM, Tundisi LL, Ataide JA, Mazzola PG. Brief descriptions of the principles of prominent methods used to study the penetration of materials into human hair and a review of examples of their use. Int J Cosmet Sci 2021; 43:113-122. [PMID: 33314178 DOI: 10.1111/ics.12683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 11/17/2020] [Accepted: 12/07/2020] [Indexed: 11/27/2022]
Abstract
Consumers are attracted to the latest fashion trends and different looks. This drives the search for novel hair treatments. Some chemicals present in hair treatment products can penetrate the hair shaft. These materials can either nourish or injure the hair cortex. Different techniques have been used to investigate the mechanism of molecule penetration and the conditions under which penetration occurs. This article reviews the techniques applied for this purpose. Various microscopy techniques are used to capture clear and colourful images to determine the diffusion pathways and the exact location of the molecules under study. However, the laborious sample preparation often leads to sample destruction since cross-sectioning is often required. While various other techniques have been successfully used for investigating the penetration methods, most of these require different amounts of work to be put in for sample preparation and instrumentation. Several spectroscopic techniques have been used to study the penetration of the molecules because of the high levels of accuracy and the quick response time of these techniques. Moreover, the samples are not damaged during the investigation.
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Affiliation(s)
- Carolina Botelho Lourenço
- Symrise Global Hair Care Center, Cotia, Sao Paulo, Brazil.,Faculty of Pharmaceutical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | | | | | | | | | - Janaína Artem Ataide
- Faculty of Pharmaceutical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | - Priscila Gava Mazzola
- Faculty of Pharmaceutical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
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2
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Wang S, Wu C, Luo J, Luo X, Yuan R, Yang X. Target-triggered configuration change of DNA tetrahedron for SERS assay of microRNA 122. Mikrochim Acta 2020; 187:460. [PMID: 32686039 DOI: 10.1007/s00604-020-04449-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 07/11/2020] [Indexed: 12/15/2022]
Abstract
A surface-enhanced Raman scattering (SERS) method is proposed for the assay of microRNA 122 based on configuration change of DNA tetrahedron. Firstly, a DNA tetrahedron was self-assembled with one vertex labeled with toluidine blue (TB). Then, it was immobilized on the porous Ni/SiO2@PEI@Au as a SERS platform, which was characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). At this time, the DNA tetrahedron was contracted; so, the TB is close to AuNPs and the Raman signal is high. When target microRNA 122 existed, with the nicking enzyme amplification strategy, a great deal of DNA signal chains (S5) was obtained, which can extend the contracted DNA tetrahedron and change it into a three-dimensional DNA tetrahedron. In this case, the TB was far from AuNPs, resulting in a lower Raman signal. Due to the configuration change of DNA tetrahedron, the Raman signal at 1624 cm-1 (with the excitation wavelength of 633 nm) has a linear relationship with the logarithm concentration of microRNA 122. This SERS assay has high sensitivity for microRNA 122 with a determination range from 0.01 aM to 10 fM and a detection limit of 0.009 aM. The recoveries from spiked samples were in the range 95 to 109%. This SERS strategy is designed based on the target-triggered configuration change of DNA tetrahedron, which can give new insight for DNA structures in bioanalysis. Graphical abstract A sensitive surface-enhanced Raman scattering (SERS) biosensor was developed to detect microRNA 122 using the configuration change of DNA tetrahedron to indirectly control the position of TB and hot spot.
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Affiliation(s)
- Shufan Wang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, People's Republic of China
| | - Caijun Wu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, People's Republic of China
| | - Jiajia Luo
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, People's Republic of China
| | - Xiliang Luo
- Shandong Key Laboratory of Biochemical Analysis; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, People's Republic of China
| | - Ruo Yuan
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, People's Republic of China.
| | - Xia Yang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, People's Republic of China
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Hossain MN, Igne B, Anderson CA, Drennen JK. Influence of moisture variation on the performance of Raman spectroscopy in quantitative pharmaceutical analyses. J Pharm Biomed Anal 2019; 164:528-535. [DOI: 10.1016/j.jpba.2018.10.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 10/12/2018] [Accepted: 10/12/2018] [Indexed: 10/28/2022]
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Halse ME, Procacci B, Perutz RN, Duckett SB. Towards measuring reactivity on micro-to-millisecond timescales with laser pump, NMR probe spectroscopy. Faraday Discuss 2019; 220:28-44. [DOI: 10.1039/c9fd00039a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We present a quantitative analysis of the timescales of reactivity that are accessible to a laser pump, NMR probe spectroscopy method using para-hydrogen induced polarisation (PHIP) and identify three kinetic regimes: fast, intermediate and slow.
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Affiliation(s)
| | - Barbara Procacci
- Centre for Hyperpolarisation in Magnetic Resonance
- Department of Chemistry
- University of York
- York
- UK
| | | | - Simon B. Duckett
- Centre for Hyperpolarisation in Magnetic Resonance
- Department of Chemistry
- University of York
- York
- UK
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Wang S, Luo J, He Y, Chai Y, Yuan R, Yang X. Combining Porous Magnetic Ni@C Nanospheres and CaCO 3 Microcapsule as Surface-Enhanced Raman Spectroscopy Sensing Platform for Hypersensitive C-Reactive Protein Detection. ACS APPLIED MATERIALS & INTERFACES 2018; 10:33707-33712. [PMID: 30182714 DOI: 10.1021/acsami.8b13061] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
In this work, we have designed an efficient and rapid surface-enhanced Raman spectroscopy (SERS) immunosensor for a supersensitive analysis of hypersensitive C-reactive protein (hs-CRP) with a label-free method by combining porous magnetic Ni@C nanospheres to aggregate together for simplifying the experiment operation and CaCO3 microcapsule to encapsulate rhodamine B as the Raman signal. The final solution containing the signal molecule was dropped on the Ag nanoparticle substrate, and the signal could be enhanced by Ag particles. First, rhodamine B was encapsulated in the CaCO3 microcapsule when it precipitated to form microcubes. Subsequently, the porous CaCO3 microcapsule was assembled layer by layer with poly(ether imide) (PEI) and a second antibody to obtain rhodamine B@CaCO3@PEI@Ab2. Then, the functionalized magnetic Ni@C nanospheres were prepared to immobilize the primary antibody (Ab1). Finally, the immunosensor was fabricated by the sandwiched antibody-antigen interactions. Compared to the DNA hydrogel, the low-cost CaCO3 microcapsule would be rapidly dissolved by ethylene diamine tetraacetic acid, releasing rhodamine B to produce a strong Raman signal for a rapid and efficient detection of hs-CRP. With the hs-CRP concentration ranging from 0.1 pg mL-1 to 1 μg mL-1, the SERS intensity of the platform has a linear relationship with the logarithm of hs-CRP concentration, and the detection limit was 0.01 pg mL-1. By this smart design, this work can give a direction for a rapid label-free SERS analysis.
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Affiliation(s)
- Shufan Wang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, College of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , People's Republic of China
| | - Jiajia Luo
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, College of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , People's Republic of China
| | - Yi He
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, College of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , People's Republic of China
| | - Yaqin Chai
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, College of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , People's Republic of China
| | - Ruo Yuan
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, College of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , People's Republic of China
| | - Xia Yang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, College of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , People's Republic of China
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Wang WT, Zhang H, Yuan Y, Guo Y, He SX. Research Progress of Raman Spectroscopy in Drug Analysis. AAPS PharmSciTech 2018; 19:2921-2928. [PMID: 30091063 DOI: 10.1208/s12249-018-1135-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 07/24/2018] [Indexed: 12/31/2022] Open
Abstract
Raman spectroscopy is a spectroscopic analysis technique that enables rapid qualitative and quantitative detection based on inelastic collision and Raman scattering intensity. This review detailed the generation principle, instrument composition, influencing factors, and common classifications of Raman spectrum. Furthermore, it summarized and forecast the research progress of Raman spectroscopy in the field of drug analysis simultaneously over the past decade, including the identification of active pharmaceutical ingredients (APIs), qualitative and quantitative studies of pharmaceutical preparations, detection of illicit drugs, the identification of Chinese herbal medicines, and the combination with other technologies. The development of Raman spectroscopy in other fields is additionally summarized.
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Brown AM, McCusker CE, Carey MC, Blanco-Rodríguez AM, Towrie M, Clark IP, Vlček A, McCusker JK. Vibrational Relaxation and Redistribution Dynamics in Ruthenium(II) Polypyridyl-Based Charge-Transfer Excited States: A Combined Ultrafast Electronic and Infrared Absorption Study. J Phys Chem A 2018; 122:7941-7953. [DOI: 10.1021/acs.jpca.8b06197] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Allison M. Brown
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Catherine E. McCusker
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Monica C. Carey
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Ana Maria Blanco-Rodríguez
- School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom
| | - Michael Towrie
- Central Laser Facility, Research Complex at Harwell, STFC, Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire OX11 0QX, United Kingdom
| | - Ian P. Clark
- Central Laser Facility, Research Complex at Harwell, STFC, Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire OX11 0QX, United Kingdom
| | - Antonín Vlček
- School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom
- J. Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Dolejskova 3, CZ-182 23 Prague, Czech Republic
| | - James K. McCusker
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
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8
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Aslam U, Rao VG, Chavez S, Linic S. Catalytic conversion of solar to chemical energy on plasmonic metal nanostructures. Nat Catal 2018. [DOI: 10.1038/s41929-018-0138-x] [Citation(s) in RCA: 409] [Impact Index Per Article: 68.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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9
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Halse ME, Procacci B, Henshaw SL, Perutz RN, Duckett SB. Coherent evolution of parahydrogen induced polarisation using laser pump, NMR probe spectroscopy: Theoretical framework and experimental observation. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2017; 278:25-38. [PMID: 28347906 DOI: 10.1016/j.jmr.2017.03.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 03/07/2017] [Accepted: 03/08/2017] [Indexed: 06/06/2023]
Abstract
We recently reported a pump-probe method that uses a single laser pulse to introduce parahydrogen (p-H2) into a metal dihydride complex and then follows the time-evolution of the p-H2-derived nuclear spin states by NMR. We present here a theoretical framework to describe the oscillatory behaviour of the resultant hyperpolarised NMR signals using a product operator formalism. We consider the cases where the p-H2-derived protons form part of an AX, AXY, AXYZ or AA'XX' spin system in the product molecule. We use this framework to predict the patterns for 2D pump-probe NMR spectra, where the indirect dimension represents the evolution during the pump-probe delay and the positions of the cross-peaks depend on the difference in chemical shift of the p-H2-derived protons and the difference in their couplings to other nuclei. The evolution of the NMR signals of the p-H2-derived protons, as well as the transfer of hyperpolarisation to other NMR-active nuclei in the product, is described. The theoretical framework is tested experimentally for a set of ruthenium dihydride complexes representing the different spin systems. Theoretical predictions and experimental results agree to within experimental error for all features of the hyperpolarised 1H and 31P pump-probe NMR spectra. Thus we establish the laser pump, NMR probe approach as a robust way to directly observe and quantitatively analyse the coherent evolution of p-H2-derived spin order over micro-to-millisecond timescales.
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Affiliation(s)
- Meghan E Halse
- Centre for Hyperpolarisation in Magnetic Resonance, Department of Chemistry, York Science Park, University of York, Heslington, York YO10 5NY, UK; Department of Chemistry, University of York, Heslington, York YO10 5DD, UK.
| | - Barbara Procacci
- Centre for Hyperpolarisation in Magnetic Resonance, Department of Chemistry, York Science Park, University of York, Heslington, York YO10 5NY, UK; Department of Chemistry, University of York, Heslington, York YO10 5DD, UK
| | - Sarah-Louise Henshaw
- Centre for Hyperpolarisation in Magnetic Resonance, Department of Chemistry, York Science Park, University of York, Heslington, York YO10 5NY, UK; Department of Chemistry, University of York, Heslington, York YO10 5DD, UK
| | - Robin N Perutz
- Department of Chemistry, University of York, Heslington, York YO10 5DD, UK.
| | - Simon B Duckett
- Centre for Hyperpolarisation in Magnetic Resonance, Department of Chemistry, York Science Park, University of York, Heslington, York YO10 5NY, UK; Department of Chemistry, University of York, Heslington, York YO10 5DD, UK.
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10
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Yuan Y, Panwar N, Yap SHK, Wu Q, Zeng S, Xu J, Tjin SC, Song J, Qu J, Yong KT. SERS-based ultrasensitive sensing platform: An insight into design and practical applications. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.02.006] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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11
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He Y, Yang X, Yuan R, Chai Y. "Off" to "On" Surface-Enhanced Raman Spectroscopy Platform with Padlock Probe-Based Exponential Rolling Circle Amplification for Ultrasensitive Detection of MicroRNA 155. Anal Chem 2017; 89:2866-2872. [PMID: 28194952 DOI: 10.1021/acs.analchem.6b04082] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
In this work, an "off" to "on" surface-enhanced Raman spectroscopy (SERS) platform was constructed for ultrasensitive detection of microRNA (miRNA) by using a magnetic SERS substrate (Co@C/PEI/Ag) and padlock probe-based exponential rolling circle amplification (P-ERCA) strategy. Herein, miRNA 155 could act as primers to initiate rolling circle amplification (RCA) for producing a long repeat sequence, and then the obtained DNA would be cleaved into two kinds of single-stranded DNAs in the presence of nickase. One of the DNAs can be a new primer to initiate new cycle reactions for obtaining large numbers of the other one (trigger DNA), consequently leading to an exponential amplification. On the other hand, the hairpin DNA (H1), with a Raman label (Cy5) at one end, would form a hairpin structure to make the Cy5 closer to the SERS substrates, which could produce a strong SERS signal ("on" status). Then placeholder DNA (P2) partly hybridized with H1 to open the hairpin structure making Cy5 far away from substrates with a decreased signal ("off" status). Next, the obtained trigger DNA can complement with P2 to make the Raman label reclosed to the SERS substrates with a strong SERS signal ("on" status). From this principle, the strategy could achieve the change from "off" to "on" status. This SERS strategy exhibited a wide linear range of 100 aM to 100 pM with a low detection limit of 70.2 aM, which indicated the proposed SERS platform has potential application value for ultrasensitive bioassay of miRNA.
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Affiliation(s)
- Yi He
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University , Chongqing 400715, People's Republic of China
| | - Xia Yang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University , Chongqing 400715, People's Republic of China
| | - Ruo Yuan
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University , Chongqing 400715, People's Republic of China
| | - Yaqin Chai
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University , Chongqing 400715, People's Republic of China
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Shillito GE, Larsen CB, McLay JRW, Lucas NT, Gordon KC. Effect of Bridge Alteration on Ground- and Excited-State Properties of Ruthenium(II) Complexes with Electron-Donor-Substituted Dipyrido[3,2-a:2',3'-c]phenazine Ligands. Inorg Chem 2016; 55:11170-11184. [PMID: 27723325 DOI: 10.1021/acs.inorgchem.6b01810] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of Ru(II) 2,2'-bipyridine (bpy) complexes with an electron-accepting dipyrido[3,2-a:2',3'-c]phenazine (dppz) ligand coupled to an electron-donating triarylamine (TAA) group have been investigated. Systematic alteration of a bridging unit between the dppz and TAA allowed exploration into how communication between the donor and acceptor is perturbed by distance, as well as by steric and electronic effects. The effect of the bridging group on the electronic properties of the systems was characterized using a variety of spectroscopic methods, including Fourier transform-Raman (FT-Raman) spectroscopy, resonance Raman spectroscopy, and transient resonance Raman (TR2) spectroscopy. These methods were used in conjunction with ground- and excited-state absorption spectroscopy, electrochemical studies, and DFT calculations. The ground-state electronic absorption spectra show distinct variation with the bridging group, with the wavelength observed for the lowest energy electronic transition ranging from 449 nm to 522 nm, accompanied by large changes in the molar absorptivity. The lowest-energy Franck-Condon state was determined to be intra-ligand charge transfer (ILCT) in nature for most compounds. The presence of higher-energy metal-to-ligand charge transfer (MLCT) Ru(II) → bpy and Ru(II) → dppz transitions was also confirmed via resonance Raman spectroscopy. The TR2 spectra showed characteristic dppz• - and TAA• + vibrations, indicating that the THEXI state formed was also ILCT in nature. Excited-state lifetime measurements reveal that the rate of decay is in accordance with the energy gap law and is not otherwise affected by the nature of the bridging unit.
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Affiliation(s)
- Georgina E Shillito
- Department of Chemistry, University of Otago , P.O. Box 56, Dunedin, New Zealand
| | - Christopher B Larsen
- Department of Chemistry, University of Otago , P.O. Box 56, Dunedin, New Zealand
| | - James R W McLay
- Department of Chemistry, University of Otago , P.O. Box 56, Dunedin, New Zealand
| | - Nigel T Lucas
- Department of Chemistry, University of Otago , P.O. Box 56, Dunedin, New Zealand
| | - Keith C Gordon
- Department of Chemistry, University of Otago , P.O. Box 56, Dunedin, New Zealand
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Horvath R, Huff GS, Gordon KC, George MW. Probing the excited state nature of coordination complexes with blended organic and inorganic chromophores using vibrational spectroscopy. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.04.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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14
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Boerigter C, Aslam U, Linic S. Mechanism of Charge Transfer from Plasmonic Nanostructures to Chemically Attached Materials. ACS NANO 2016; 10:6108-15. [PMID: 27268233 DOI: 10.1021/acsnano.6b01846] [Citation(s) in RCA: 195] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Plasmonic metal nanoparticles can efficiently convert the energy of visible photons into the energy of hot charge carriers within the nanoparticles. These energetic charge carriers can transfer to molecules or semiconductors, chemically attached to the nanoparticles, where they can induce photochemical transformations. Classical models of photoinduced charge excitation and transfer in metals suggest that the majority of the energetic charge carriers rapidly decay within the metal nanostructure before they are transferred into the neighboring molecule or semiconductor, and therefore, the efficiency of charge transfer is low. Herein, we present experimental evidence that calls into question this conventional picture. We demonstrate a system where the presence of a molecule, adsorbed on the surface of a plasmonic nanoparticle, significantly changes the flow of charge within the excited plasmonic system. The nanoparticle-adsorbate system experiences high rates of direct, resonant flow of charge from the nanoparticle to the molecule, bypassing the conventional charge excitation and thermalization process taking place in the nanoparticle. This picture of charge transfer suggests that the yield of extracted hot electrons (or holes) from plasmonic nanoparticles can be significantly higher than the yields expected based on conventional models. We discuss a conceptual physical framework that allows us to explain our experimental observations. This analysis points us in a direction toward molecular control of the charge transfer process using interface and local field engineering strategies.
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Affiliation(s)
- Calvin Boerigter
- Department of Chemical Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
| | - Umar Aslam
- Department of Chemical Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
| | - Suljo Linic
- Department of Chemical Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
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Byrne A, Dolan C, Moriarty RD, Martin A, Neugebauer U, Forster RJ, Davies A, Volkov Y, Keyes TE. Osmium(II) polypyridyl polyarginine conjugate as a probe for live cell imaging; a comparison of uptake, localization and cytotoxicity with its ruthenium(II) analogue. Dalton Trans 2016. [PMID: 26197944 DOI: 10.1039/c5dt01833a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A first investigation into the application of a luminescent osmium(ii) bipyridine complex to live cell imaging is presented. Osmium(ii) (bis-2,2-bipyridyl)-2(4-carboxylphenyl) imidazo[4,5f][1,10]phenanthroline was prepared and conjugated to octaarginine, a cell penetrating peptide. The photophysics, cell uptake and cytotoxicity of this osmium complex conjugate were performed and compared with its ruthenium analogue. Cell uptake and distribution of both ruthenium and osmium conjugates were very similar with rapid transmembrane transport of the osmium probe (complete within approx. 20 min) and dispersion throughout the cytoplasm and organelles. The near-infrared (NIR) emission of the osmium complex (λmax 726 nm) coincides well with the biological optical window and this facilitated luminescent and luminescence lifetime imaging of the cell which was well resolved from cell autofluorescence. The large Stokes shift of the emission also permitted resonance Raman mapping of the dye within CHO cells. Rather surprisingly, the osmium conjugate exhibited very low cytotoxicity when incubated both in the dark and under visible irradiation. This was attributed to the remarkable stability of this complex which was reflected by the complete absence of photo-bleaching of the complex even under extended continuous irradiation. In addition, when compared to its ruthenium analogue its luminescence was short-lived in water therefore rendering it insensitive to O2.
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Affiliation(s)
- Aisling Byrne
- School of Chemical Sciences, National Centre for Sensor Research, Dublin City University, Glasnevin, Dublin 9, Ireland.
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16
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Smolentsev G, Sundström V. Time-resolved X-ray absorption spectroscopy for the study of molecular systems relevant for artificial photosynthesis. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2015.03.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Abdolahzadeh S, de Boer JW, Browne WR. Redox-State Dependent Ligand Exchange in Manganese-Based Oxidation Catalysis. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500134] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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18
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Draksharapu A, Boersma AJ, Browne WR, Roelfes G. Characterisation of the interactions between substrate, copper(ii) complex and DNA and their role in rate acceleration in DNA-based asymmetric catalysis. Dalton Trans 2015; 44:3656-63. [DOI: 10.1039/c4dt02734e] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
High effective molarity is responsible for the significant increase of binding of substrates to copper(ii) complexes in DNA-based catalysis.
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Affiliation(s)
- Apparao Draksharapu
- Stratingh Institute for Chemistry
- Faculty of Mathematics and Natural Sciences
- University of Groningen
- Groningen
- The Netherlands
| | - Arnold J. Boersma
- Stratingh Institute for Chemistry
- Faculty of Mathematics and Natural Sciences
- University of Groningen
- Groningen
- The Netherlands
| | - Wesley R. Browne
- Stratingh Institute for Chemistry
- Faculty of Mathematics and Natural Sciences
- University of Groningen
- Groningen
- The Netherlands
| | - Gerard Roelfes
- Stratingh Institute for Chemistry
- Faculty of Mathematics and Natural Sciences
- University of Groningen
- Groningen
- The Netherlands
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19
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Robinson AM, Zhao L, Shah Alam MY, Bhandari P, Harroun SG, Dendukuri D, Blackburn J, Brosseau CL. The development of “fab-chips” as low-cost, sensitive surface-enhanced Raman spectroscopy (SERS) substrates for analytical applications. Analyst 2015; 140:779-85. [DOI: 10.1039/c4an01633e] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Modification of metal-coated zari fabric chips with silver nanoparticles results in sensitive, affordable SERS substrates which are useful for a wide range of chemical sensing applications.
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Affiliation(s)
| | - Lili Zhao
- Department of Chemisty
- Saint Mary's University
- Halifax
- Canada
| | | | | | | | | | - Jonathan Blackburn
- Institute of Infectious Disease & Molecular Medicine
- Division of Medical Biochemistry
- University of Cape Town
- Faculty of Health Sciences
- Cape Town
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20
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Gallo E, Glatzel P. Valence to core X-ray emission spectroscopy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:7730-46. [PMID: 24861500 DOI: 10.1002/adma.201304994] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 04/15/2014] [Indexed: 05/20/2023]
Abstract
This Progress Report discusses the chemical sensitivity of Kβ valence to core X-ray emission spectroscopy (vtc-XES) and its applications for investigating 3d-transition-metal based materials. Vtc-XES can be used for ligand identification and for the characterization of the valence electronic levels. The technique provides information that is similar to valence band photoemission spectroscopy but the sample environment can be chosen freely and thus allows measurements in presence of gases and liquids and it can be applied for measurements under in situ/operando or extreme conditions. The theoretical basis of the technique is presented using a one-electron approach and the vtc-XES spectral features are interpreted using ground state density functional theory calculations. Some recent results obtained by vtc-XES in various scientific fields are discussed to demonstrate the potential and future applications of this technique. Resonant X-ray emission spectroscopy is briefly introduced with some applications for the study of 3d and 5d-transition-metal based systems.
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Affiliation(s)
- Erik Gallo
- ESRF - The European Synchrotron, 71 Avenue des Martyres, Grenoble, 38000, France
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21
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Torres O, Procacci B, Halse ME, Adams RW, Blazina D, Duckett SB, Eguillor B, Green RA, Perutz RN, Williamson DC. Photochemical Pump and NMR Probe: Chemically Created NMR Coherence on a Microsecond Time Scale. J Am Chem Soc 2014; 136:10124-31. [DOI: 10.1021/ja504732u] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Olga Torres
- Department
of Chemistry, University of York, Heslington, York YO10
5DD, U.K
| | - Barbara Procacci
- Department
of Chemistry, University of York, Heslington, York YO10
5DD, U.K
| | - Meghan E. Halse
- Department
of Chemistry, University of York, Heslington, York YO10
5DD, U.K
| | - Ralph W. Adams
- Department
of Chemistry, University of York, Heslington, York YO10
5DD, U.K
| | - Damir Blazina
- Department
of Chemistry, University of York, Heslington, York YO10
5DD, U.K
| | - Simon B. Duckett
- Department
of Chemistry, University of York, Heslington, York YO10
5DD, U.K
| | - Beatriz Eguillor
- Department
of Chemistry, University of York, Heslington, York YO10
5DD, U.K
| | - Richard A. Green
- Department
of Chemistry, University of York, Heslington, York YO10
5DD, U.K
| | - Robin N. Perutz
- Department
of Chemistry, University of York, Heslington, York YO10
5DD, U.K
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22
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YU J, CUI L, HE H, YAN S, HU Y, WU H. Raman spectra of RE2O3 (RE=Eu, Gd, Dy, Ho, Er, Tm, Yb, Lu, Sc and Y): laser-excited luminescence and trace impurity analysis. J RARE EARTH 2014. [DOI: 10.1016/s1002-0721(14)60025-9] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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23
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Tissot A, Fertey P, Guillot R, Briois V, Boillot M. Structural, Magnetic, and Vibrational Investigations of Fe
III
Spin‐Crossover Compounds [Fe(4‐MeO–SalEen)
2
]X with X = NO
3
–
and PF
6
–. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300960] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Antoine Tissot
- ICMMO‐ECI, UMR CNRS 8182, Université Paris‐Sud, 91405 Orsay, France, http://www.icmmo.u‐psud.fr/labos/LCI
| | - Pierre Fertey
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint Aubin, 91192 Gif sur Yvette, France
| | - Régis Guillot
- ICMMO‐ECI, UMR CNRS 8182, Université Paris‐Sud, 91405 Orsay, France, http://www.icmmo.u‐psud.fr/labos/LCI
| | - Valérie Briois
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint Aubin, 91192 Gif sur Yvette, France
| | - Marie‐Laure Boillot
- ICMMO‐ECI, UMR CNRS 8182, Université Paris‐Sud, 91405 Orsay, France, http://www.icmmo.u‐psud.fr/labos/LCI
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24
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Wächtler M, Maiuri M, Brida D, Popp J, Rau S, Cerullo G, Dietzek B. Utilizing Ancillary Ligands to Optimize the Photophysical Properties of 4H-Imidazole Ruthenium Dyes. Chemphyschem 2013; 14:2973-83. [DOI: 10.1002/cphc.201300383] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Indexed: 11/09/2022]
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25
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Shepherd HJ, Molnár G, Nicolazzi W, Salmon L, Bousseksou A. Spin Crossover at the Nanometre Scale. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201201205] [Citation(s) in RCA: 125] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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26
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Charge-separated excited states in platinum(II) chromophores: Photophysics, formation, stabilization and utilization in solar energy conversion. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.07.010] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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27
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Wächtler M, Guthmuller J, González L, Dietzek B. Analysis and characterization of coordination compounds by resonance Raman spectroscopy. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.02.004] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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28
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Ultrafast Manipulation of Raman Transitions and Prevention of Decoherence Using Chirped Pulses and Optical Frequency Combs. ADVANCES IN QUANTUM CHEMISTRY 2012. [DOI: 10.1016/b978-0-12-396498-4.00007-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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29
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Draksharapu A, Li Q, Logtenberg H, van den Berg TA, Meetsma A, Killeen JS, Feringa BL, Hage R, Roelfes G, Browne WR. Ligand Exchange and Spin State Equilibria of FeII(N4Py) and Related Complexes in Aqueous Media. Inorg Chem 2011; 51:900-13. [DOI: 10.1021/ic201879b] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Apparao Draksharapu
- Stratingh Institute
for Chemistry,
Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747AG Groningen, The Netherlands
| | - Qian Li
- Stratingh Institute
for Chemistry,
Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747AG Groningen, The Netherlands
| | - Hella Logtenberg
- Stratingh Institute
for Chemistry,
Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747AG Groningen, The Netherlands
| | - Tieme A. van den Berg
- Stratingh Institute
for Chemistry,
Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747AG Groningen, The Netherlands
| | - Auke Meetsma
- Zernike Institute for Advanced
Materials, Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747AG Groningen,
The Netherlands
| | - J. Scott Killeen
- Unilever R&D Vlaardingen, P.O. Box 114, 3130 AC Vlaardingen, The Netherlands
| | - Ben L. Feringa
- Stratingh Institute
for Chemistry,
Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747AG Groningen, The Netherlands
- Zernike Institute for Advanced
Materials, Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747AG Groningen,
The Netherlands
| | - Ronald Hage
- Rahu Catalytics BV, BioPartner Center Leiden, Wassenaarseweg 72, 2333,
AL Leiden, The Netherlands
| | - Gerard Roelfes
- Stratingh Institute
for Chemistry,
Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747AG Groningen, The Netherlands
- Zernike Institute for Advanced
Materials, Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747AG Groningen,
The Netherlands
| | - Wesley R. Browne
- Stratingh Institute
for Chemistry,
Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747AG Groningen, The Netherlands
- Zernike Institute for Advanced
Materials, Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747AG Groningen,
The Netherlands
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30
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Sahoo SK, Umapathy S, Parker AW. Time-resolved resonance Raman spectroscopy: exploring reactive intermediates. APPLIED SPECTROSCOPY 2011; 65:1087-115. [PMID: 21986070 DOI: 10.1366/11-06406] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The study of reaction mechanisms involves systematic investigations of the correlation between structure, reactivity, and time. The challenge is to be able to observe the chemical changes undergone by reactants as they change into products via one or several intermediates such as electronic excited states (singlet and triplet), radicals, radical ions, carbocations, carbanions, carbenes, nitrenes, nitrinium ions, etc. The vast array of intermediates and timescales means there is no single "do-it-all" technique. The simultaneous advances in contemporary time-resolved Raman spectroscopic techniques and computational methods have done much towards visualizing molecular fingerprint snapshots of the reactive intermediates in the microsecond to femtosecond time domain. Raman spectroscopy and its sensitive counterpart resonance Raman spectroscopy have been well proven as means for determining molecular structure, chemical bonding, reactivity, and dynamics of short-lived intermediates in solution phase and are advantageous in comparison to commonly used time-resolved absorption and emission spectroscopy. Today time-resolved Raman spectroscopy is a mature technique; its development owes much to the advent of pulsed tunable lasers, highly efficient spectrometers, and high speed, highly sensitive multichannel detectors able to collect a complete spectrum. This review article will provide a brief chronological development of the experimental setup and demonstrate how experimentalists have conquered numerous challenges to obtain background-free (removing fluorescence), intense, and highly spectrally resolved Raman spectra in the nanosecond to microsecond (ns-μs) and picosecond (ps) time domains and, perhaps surprisingly, laid the foundations for new techniques such as spatially offset Raman spectroscopy.
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Affiliation(s)
- Sangram Keshari Sahoo
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore-560012, India
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31
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Lockard JV, Rachford AA, Smolentsev G, Stickrath AB, Wang X, Zhang X, Atenkoffer K, Jennings G, Soldatov A, Rheingold AL, Castellano FN, Chen LX. Triplet Excited State Distortions in a Pyrazolate Bridged Platinum Dimer Measured by X-ray Transient Absorption Spectroscopy. J Phys Chem A 2010; 114:12780-7. [DOI: 10.1021/jp1088299] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jenny V. Lockard
- Chemical Sciences and Engineering Division and X-ray Sciences Division, Argonne National Laboratory, Argonne, Illinois 60439, United States, Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States, Department of Chemistry & Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States, Research Center for Nanoscale Structure of Matter, Southern Federal University, Sorge 5, Rostov-na-Donu, 344090 Russia, Department of Chemical
| | - Aaron A. Rachford
- Chemical Sciences and Engineering Division and X-ray Sciences Division, Argonne National Laboratory, Argonne, Illinois 60439, United States, Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States, Department of Chemistry & Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States, Research Center for Nanoscale Structure of Matter, Southern Federal University, Sorge 5, Rostov-na-Donu, 344090 Russia, Department of Chemical
| | - Grigory Smolentsev
- Chemical Sciences and Engineering Division and X-ray Sciences Division, Argonne National Laboratory, Argonne, Illinois 60439, United States, Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States, Department of Chemistry & Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States, Research Center for Nanoscale Structure of Matter, Southern Federal University, Sorge 5, Rostov-na-Donu, 344090 Russia, Department of Chemical
| | - Andrew B. Stickrath
- Chemical Sciences and Engineering Division and X-ray Sciences Division, Argonne National Laboratory, Argonne, Illinois 60439, United States, Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States, Department of Chemistry & Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States, Research Center for Nanoscale Structure of Matter, Southern Federal University, Sorge 5, Rostov-na-Donu, 344090 Russia, Department of Chemical
| | - Xianghuai Wang
- Chemical Sciences and Engineering Division and X-ray Sciences Division, Argonne National Laboratory, Argonne, Illinois 60439, United States, Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States, Department of Chemistry & Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States, Research Center for Nanoscale Structure of Matter, Southern Federal University, Sorge 5, Rostov-na-Donu, 344090 Russia, Department of Chemical
| | - Xiaoyi Zhang
- Chemical Sciences and Engineering Division and X-ray Sciences Division, Argonne National Laboratory, Argonne, Illinois 60439, United States, Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States, Department of Chemistry & Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States, Research Center for Nanoscale Structure of Matter, Southern Federal University, Sorge 5, Rostov-na-Donu, 344090 Russia, Department of Chemical
| | - Klaus Atenkoffer
- Chemical Sciences and Engineering Division and X-ray Sciences Division, Argonne National Laboratory, Argonne, Illinois 60439, United States, Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States, Department of Chemistry & Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States, Research Center for Nanoscale Structure of Matter, Southern Federal University, Sorge 5, Rostov-na-Donu, 344090 Russia, Department of Chemical
| | - Guy Jennings
- Chemical Sciences and Engineering Division and X-ray Sciences Division, Argonne National Laboratory, Argonne, Illinois 60439, United States, Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States, Department of Chemistry & Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States, Research Center for Nanoscale Structure of Matter, Southern Federal University, Sorge 5, Rostov-na-Donu, 344090 Russia, Department of Chemical
| | - Alexander Soldatov
- Chemical Sciences and Engineering Division and X-ray Sciences Division, Argonne National Laboratory, Argonne, Illinois 60439, United States, Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States, Department of Chemistry & Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States, Research Center for Nanoscale Structure of Matter, Southern Federal University, Sorge 5, Rostov-na-Donu, 344090 Russia, Department of Chemical
| | - Arnold L. Rheingold
- Chemical Sciences and Engineering Division and X-ray Sciences Division, Argonne National Laboratory, Argonne, Illinois 60439, United States, Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States, Department of Chemistry & Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States, Research Center for Nanoscale Structure of Matter, Southern Federal University, Sorge 5, Rostov-na-Donu, 344090 Russia, Department of Chemical
| | - Felix N. Castellano
- Chemical Sciences and Engineering Division and X-ray Sciences Division, Argonne National Laboratory, Argonne, Illinois 60439, United States, Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States, Department of Chemistry & Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States, Research Center for Nanoscale Structure of Matter, Southern Federal University, Sorge 5, Rostov-na-Donu, 344090 Russia, Department of Chemical
| | - Lin X. Chen
- Chemical Sciences and Engineering Division and X-ray Sciences Division, Argonne National Laboratory, Argonne, Illinois 60439, United States, Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States, Department of Chemistry & Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States, Research Center for Nanoscale Structure of Matter, Southern Federal University, Sorge 5, Rostov-na-Donu, 344090 Russia, Department of Chemical
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Horvath R, Gordon KC. Understanding excited-state structure in metal polypyridyl complexes using resonance Raman excitation profiles, time-resolved resonance Raman spectroscopy and density functional theory. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2009.11.015] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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33
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Izake EL. Forensic and homeland security applications of modern portable Raman spectroscopy. Forensic Sci Int 2010; 202:1-8. [DOI: 10.1016/j.forsciint.2010.03.020] [Citation(s) in RCA: 132] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2009] [Revised: 03/13/2010] [Accepted: 03/17/2010] [Indexed: 10/19/2022]
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34
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Kudernac T, Katsonis N, Browne WR, Feringa BL. Nano-electronic switches: Light-induced switching of the conductance of molecular systems. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b902009h] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Bergeson SD, Peatross JB, Eyring NJ, Fralick JF, Stevenson DN, Ferguson SB. Resonance Raman measurements of carotenoids using light-emitting diodes. JOURNAL OF BIOMEDICAL OPTICS 2008; 13:044026. [PMID: 19021353 DOI: 10.1117/1.2952075] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We report on the development of a compact commercial instrument for measuring carotenoids in skin tissue. The instrument uses two light-emitting diodes (LEDs) for dual-wavelength excitation and four photomultiplier tubes for multichannel detection. Bandpass filters are used to select the excitation detection wavelengths. The f1.3 optical system has high optical throughput and single photon sensitivity, both of which are crucial in LED-based Raman measurements. We employ a signal processing technique that compensates for detector drift and error. The sensitivity and reproducibility of the LED Raman instrument compares favorably to laser-based Raman spectrometers. This compact, portable instrument is used for noninvasive measurement of carotenoid molecules in human skin with a repeatability better than 10%.
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Affiliation(s)
- Scott D Bergeson
- Brigham Young University, Department of Physics Astronomy, Provo, Utah 84602, USA.
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36
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Pearman WF, Lawrence-Snyder M, Angel SM, Decho AW. Surface-enhanced Raman spectroscopy for in situ measurements of signaling molecules (autoinducers) relevant to bacteria quorum sensing. APPLIED SPECTROSCOPY 2007; 61:1295-1300. [PMID: 18198020 DOI: 10.1366/000370207783292244] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Autoinducer (AI) molecules are used by quorum sensing (QS) bacteria to communicate information about their environment and are critical to their ability to coordinate certain physiological activities. Studying how these organisms react to environmental stresses could provide insight into methods to control these activities. To this end, we are investigating spectroscopic methods of analysis that allow in situ measurements of these AI molecules under different environmental conditions. We found that for one class of AIs, N-acyl-homoserine lactones (AHLs), surface-enhanced Raman spectroscopy (SERS) is a method capable of performing such measurements in situ. SERS spectra of seven different AHLs with acyl chain lengths from 4 to 12 carbons were collected for the first time using Ag colloidal nanoparticles synthesized via both citrate and borohydride reduction methods. Strong SERS spectra were obtained in as little as 10 seconds for 80 microM solutions of AI that exhibited the strongest SERS response, whereas 20 seconds was typical for most AI SERS spectra collected during this study. Although all spectra were similar, significant differences were detected in the SERS spectra of C4-AHL and 3-oxo-C6-AHL and more subtle differences were noted between all AHLs. Initial results indicate a detection limit of approximately 10(-6)M for C6-AHL, which is within the limits of biologically relevant concentrations of AI molecules (nM-microM). Based on these results, the SERS method shows promise for monitoring AI molecule concentrations in situ, within biofilms containing QS bacteria. This new capability offers the possibility to "listen in" on chemical communications between bacteria in their natural environment as that environment is stressed.
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Affiliation(s)
- William F Pearman
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA
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