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Wang Z, Ju S, Wang Y, Zhang R, Ma L, Song J, Lin K. The isosbestic point in the Raman spectra of the hydration shell. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 317:124413. [PMID: 38728849 DOI: 10.1016/j.saa.2024.124413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 04/16/2024] [Accepted: 05/05/2024] [Indexed: 05/12/2024]
Abstract
Isosbestic point is often observed in a series of spectra, but their interpretation is still controversial, such as whether the continuum model can produce an isosbestic point. In order to answer this question, the Raman spectra of hydration shell with continuous distribution structure in different ionic aqueous solutions were separated by Raman ratio spectra, and an isosbestic point was successfully observed. Our experimental results show that the continuum model can indeed produce the isosbestic point. In order to deepen the understanding of the isosbestic point, we calculate the first moment of the Raman spectra and conduct molecular dynamics (MD) simulations. Both experimental and theoretical findings indicate that elevated temperatures lead to increased disorder among water molecules within the hydration shell.
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Affiliation(s)
- Zhiqiang Wang
- School of Physics, Xidian University, Xi'an, 710071, P. R. China
| | - Siwen Ju
- School of Physics, Xidian University, Xi'an, 710071, P. R. China
| | - Yuxi Wang
- School of Flexible Electronics (SOFE) & State Key Laboratory of Optoelectronic Materials and Technologies (OEMT), Sun Yat-sen University, Shenzhen, 5181071, P. R. China
| | - Ruiting Zhang
- School of Physics, Xidian University, Xi'an, 710071, P. R. China.
| | - Lin Ma
- School of Physics, Xidian University, Xi'an, 710071, P. R. China
| | - Jiangluqi Song
- School of Physics, Xidian University, Xi'an, 710071, P. R. China
| | - Ke Lin
- School of Physics, Xidian University, Xi'an, 710071, P. R. China; Interdisciplinary Research Center of Smart Sensor, Xidian University, Xi'an, 710071, P. R. China.
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2
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Mozhdehei A, Mercury L, Slodczyk A. Ubiquity of the Micrometer-Thick Interface along a Quartz-Water Boundary. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:13025-13041. [PMID: 38870148 DOI: 10.1021/acs.langmuir.4c00742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
Water-rock interactions determine how the geochemical cycles revolve from the Earth's surface to the deep interior (large T-P intervals). The underlying mechanisms interweave the fluxes of matter, time, and reactivity between fluid phases and solids. The deformation processes of crustal rocks are also known to be significantly affected by the presence or absence of water, typically with the hydrolytic weakening of quartz, olivine, and other silicate minerals. In fact, fluid-rock interactions mechanistically unfold along their interfaces, developing over a certain thickness within the two phases. Diffraction-limited mid-infrared microspectroscopy was employed to monitor the thermodynamic characteristics of liquid water along a quartz boundary. The hyperspectral Fourier transform infrared data set displayed a very strong distance-dependent signature for water over a 1 ± 0.5 μm thickness, while quartz appears unmodified, which is consistent with recent studies. This unexpected thick interface is tested against the geometry of the inclusion, the chemistry of the occluded liquid (especially pH), and the thermal conditions ranging from room temperature to 155 °C. Throughout this range of physicochemical conditions, the micrometer-thick interface is characterized by a ubiquitous, significant shift in the Gibbs free energy of water inside the interfacial layer. This conclusion suggests that the interface-imprinting phenomenon driving this microthick layer has thermodynamic roots that give rise to specific properties along the quartz-water interface. This finding questions the systematic use of the bulk phase data sets to evaluate how water-rock interactions progress in porous media.
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Affiliation(s)
- Armin Mozhdehei
- Institut des Sciences de la Terre d'Orléans (ISTO) - UMR 7327 Université d'Orléans, CNRS, BRGM, 45071 Orléans Cedex, France
| | - Lionel Mercury
- Institut des Sciences de la Terre d'Orléans (ISTO) - UMR 7327 Université d'Orléans, CNRS, BRGM, 45071 Orléans Cedex, France
| | - Aneta Slodczyk
- Institut des Sciences de la Terre d'Orléans (ISTO) - UMR 7327 Université d'Orléans, CNRS, BRGM, 45071 Orléans Cedex, France
- CEMHTI, UPR 3079 CNRS - Université d'Orléans, F-45071 Orléans, France
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3
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Trodtfeld F, Tölke T, Wiegand C. Developing a Prolamin-Based Gel for Food Packaging: In-Vitro Assessment of Cytocompatibility. Gels 2023; 9:740. [PMID: 37754421 PMCID: PMC10531018 DOI: 10.3390/gels9090740] [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: 08/17/2023] [Revised: 09/08/2023] [Accepted: 09/10/2023] [Indexed: 09/28/2023] Open
Abstract
Growing environmental concerns drive efforts to reduce packaging waste by adopting biodegradable polymers, coatings, and films. However, biodegradable materials used in packaging face challenges related to barrier properties, mechanical strength, and processing compatibility. A composite gel was developed using biodegradable compounds (prolamin, d-mannose, citric acid), as a coating to increase the oxygen barrier of food packaging materials. To improve gel stability and mechanical properties, the gels were physically cross-linked with particles synthesized from tetraethyl orthosilicate and tetramethyl orthosilicate precursors. Additionally, biocompatibility assessments were performed on human keratinocytes and fibroblasts, demonstrating the safety of the gels for consumer contact. The gel properties were characterized, including molecular structure, morphology, and topography. Biocompatibility of the gels was assessed using bioluminescent ATP assay to detect cell viability, lactate dehydrogenase assay to determine cell cytotoxicity, and a leukocyte stimulation test to detect inflammatory potential. A composite gel with strong oxygen barrier properties in low-humidity environments was prepared. Increasing the silane precursor to 50 wt% during gel preparation slowed degradation in water. The addition of citric acid decreased gel solubility. However, higher precursor amounts increased surface roughness, making the gel more brittle yet mechanically resistant. The increase of precursor in the gel also increased gel viscosity. Importantly, the gels showed no cytotoxicity on human keratinocytes or fibroblasts and had no inflammatory effects on leukocytes. This composite gel holds promise for oxygen barrier food packaging and is safe for consumer contact. Further research should focus on optimizing the stability of the oxygen barrier in humid environments and investigate the potential sensitizing effects of biodegradable materials on consumers.
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Affiliation(s)
- Franziska Trodtfeld
- Department of Dermatology, Jena University Hospital, Friedrich Schiller University Jena, Am Klinikum 1, D-07747 Jena, Germany
- INNOVENT e.V., Prüssingstraße 27 B, D-07745 Jena, Germany;
| | - Tina Tölke
- INNOVENT e.V., Prüssingstraße 27 B, D-07745 Jena, Germany;
| | - Cornelia Wiegand
- Department of Dermatology, Jena University Hospital, Friedrich Schiller University Jena, Am Klinikum 1, D-07747 Jena, Germany
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4
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Wang M, Mahajan A, Miller JS, McKenna DH, Aksan A. Physicochemical Mechanisms of Protection Offered by Agarose Encapsulation during Cryopreservation of Mammalian Cells in the Absence of Membrane-Penetrating Cryoprotectants. ACS APPLIED BIO MATERIALS 2023; 6:2226-2236. [PMID: 37212878 PMCID: PMC10330259 DOI: 10.1021/acsabm.3c00098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
During freeze/thaw, cells are exposed to mechanical, thermal, chemical, and osmotic stresses, which cause loss of viability and function. Cryopreservation agents such as dimethyl sulfoxide (DMSO) are deployed to minimize freeze/thaw damage. However, there is a pressing need to eliminate DMSO from cryopreservation solutions due to its adverse effects. This is of the highest priority especially for cryopreservation of infusible/transplantable cell therapy products. In order to address this issue, we introduce reversible encapsulation in agarose hydrogels in the presence of the membrane-impermeable cryoprotectant, trehalose, as a viable, safe, and effective cryopreservation method. Our findings, which are supported by IR spectroscopy and differential scanning calorimetry analyses, demonstrate that encapsulation in 0.75% agarose hydrogels containing 10-20% trehalose inhibits mechanical damage induced by eutectic phase change, devitrification, and recrystallization, resulting in post-thaw viability comparable to the gold standard 10% DMSO.
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Affiliation(s)
- Mian Wang
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455
| | - Advitiya Mahajan
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455
| | - Jeffrey S. Miller
- Department of Medicine, University of Minnesota, Minneapolis, MN 55455
| | - David H. McKenna
- Molecular & Cellular Therapeutics, University of Minnesota, St. Paul, MN 55108
| | - Alptekin Aksan
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455
- The BioTechnology Institute, University of Minnesota, St. Paul, MN 55108
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Begušić T, Blake GA. Two-dimensional infrared-Raman spectroscopy as a probe of water's tetrahedrality. Nat Commun 2023; 14:1950. [PMID: 37029146 PMCID: PMC10082090 DOI: 10.1038/s41467-023-37667-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 03/22/2023] [Indexed: 04/09/2023] Open
Abstract
Two-dimensional spectroscopic techniques combining terahertz (THz), infrared (IR), and visible pulses offer a wealth of information about coupling among vibrational modes in molecular liquids, thus providing a promising probe of their local structure. However, the capabilities of these spectroscopies are still largely unexplored due to experimental limitations and inherently weak nonlinear signals. Here, through a combination of equilibrium-nonequilibrium molecular dynamics (MD) and a tailored spectrum decomposition scheme, we identify a relationship between the tetrahedral order of liquid water and its two-dimensional IR-IR-Raman (IIR) spectrum. The structure-spectrum relationship can explain the temperature dependence of the spectral features corresponding to the anharmonic coupling between low-frequency intermolecular and high-frequency intramolecular vibrational modes of water. In light of these results, we propose new experiments and discuss the implications for the study of tetrahedrality of liquid water.
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Affiliation(s)
- Tomislav Begušić
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, 91125, USA.
| | - Geoffrey A Blake
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, 91125, USA.
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, 91125, USA.
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6
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Bertini L, Libera V, Ripanti F, Natali F, Paolantoni M, Orecchini A, Nucara A, Petrillo C, Comez L, Paciaroni A. Polymorphism and Ligand Binding Modulate Fast Dynamics of Human Telomeric G-Quadruplexes. Int J Mol Sci 2023; 24:ijms24054280. [PMID: 36901712 PMCID: PMC10001961 DOI: 10.3390/ijms24054280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 02/07/2023] [Accepted: 02/15/2023] [Indexed: 02/25/2023] Open
Abstract
Telomeric G-quadruplexes (G4s) are promising targets in the design and development of anticancer drugs. Their actual topology depends on several factors, resulting in structural polymorphism. In this study, we investigate how the fast dynamics of the telomeric sequence AG3(TTAG3)3 (Tel22) depends on the conformation. By using Fourier transform Infrared spectroscopy, we show that, in the hydrated powder state, Tel22 adopts parallel and mixed antiparallel/parallel topologies in the presence of K+ and Na+ ions, respectively. These conformational differences are reflected in the reduced mobility of Tel22 in Na+ environment in the sub-nanosecond timescale, as probed by elastic incoherent neutron scattering. These findings are consistent with the G4 antiparallel conformation being more stable than the parallel one, possibly due to the presence of ordered hydration water networks. In addition, we study the effect of Tel22 complexation with BRACO19 ligand. Despite the quite similar conformation in the complexed and uncomplexed state, the fast dynamics of Tel22-BRACO19 is enhanced compared to that of Tel22 alone, independently of the ions. We ascribe this effect to the preferential binding of water molecules to Tel22 against the ligand. The present results suggest that the effect of polymorphism and complexation on the G4 fast dynamics is mediated by hydration water.
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Affiliation(s)
- Luca Bertini
- Department of Physics and Geology, University of Perugia, Via Alessandro Pascoli, 06123 Perugia, Italy
| | - Valeria Libera
- Department of Physics and Geology, University of Perugia, Via Alessandro Pascoli, 06123 Perugia, Italy
- CNR-IOM c/o Department of Physics and Geology, University of Perugia, Via Alessandro Pascoli, 06123 Perugia, Italy
| | - Francesca Ripanti
- Department of Physics and Geology, University of Perugia, Via Alessandro Pascoli, 06123 Perugia, Italy
- Correspondence: (F.R.); (L.C.)
| | - Francesca Natali
- CNR-IOM and INSIDE@ILL c/o OGG, 71 avenue des Martyrs, CEDEX 9, 38042 Grenoble, France
| | - Marco Paolantoni
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via Elce di Sotto 6, 06123 Perugia, Italy
| | - Andrea Orecchini
- Department of Physics and Geology, University of Perugia, Via Alessandro Pascoli, 06123 Perugia, Italy
- CNR-IOM c/o Department of Physics and Geology, University of Perugia, Via Alessandro Pascoli, 06123 Perugia, Italy
| | - Alessandro Nucara
- Department of Physics, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Roma, Italy
| | - Caterina Petrillo
- Department of Physics and Geology, University of Perugia, Via Alessandro Pascoli, 06123 Perugia, Italy
| | - Lucia Comez
- CNR-IOM c/o Department of Physics and Geology, University of Perugia, Via Alessandro Pascoli, 06123 Perugia, Italy
- Correspondence: (F.R.); (L.C.)
| | - Alessandro Paciaroni
- Department of Physics and Geology, University of Perugia, Via Alessandro Pascoli, 06123 Perugia, Italy
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Gao J, Xu X, Yu X, Fu Y, Zhang H, Gu S, Cao D, Guo Q, Xu L, Ding J. Quantitatively relating magnetic resonance T1 and T2 to glycosaminoglycan and collagen concentrations mediated by penetrated contrast agents and biomacromolecule-bound water. Regen Biomater 2023; 10:rbad035. [PMID: 37206162 PMCID: PMC10191676 DOI: 10.1093/rb/rbad035] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 04/03/2023] [Accepted: 04/07/2023] [Indexed: 05/21/2023] Open
Abstract
Magnetic resonance imaging (MRI) is a promising non-invasive method to assess cartilage regeneration based on the quantitative relationship between MRI features and concentrations of the major components in the extracellular matrix (ECM). To this end, in vitro experiments are performed to investigate the relationship and reveal the underlying mechanism. A series of collagen (COL) and glycosaminoglycan (GAG) solutions at different concentrations are prepared, and T1 and T2 relaxation times are measured with or without a contrast agent (Gd-DTPA2-) by MRI. Fourier transform infrared spectrometry is also used to measure the contents of biomacromolecule-bound water and other water, allowing theoretical derivation of the relationship between biomacromolecules and the resulting T2 values. It has been revealed that the MRI signal in the biomacromolecule aqueous systems is mainly influenced by the protons in hydrogens of biomacromolecule-bound water, which we divide into inner-bound water and outer-bound water. We have also found that COL results in higher sensitivity of bound water than GAG in T2 mapping. Owing to the charge effect, GAG regulates the penetration of the contrast agent during dialysis and has a more significant effect on T1 values than COL. Considering that COL and GAG are the most abundant biomacromolecules in the cartilage, this study is particularly useful for the real-time MRI-guided assessment of cartilage regeneration. A clinical case is reported as an in vivo demonstration, which is consistent with our in vitro results. The established quantitative relation plays a critical academic role in establishing an international standard ISO/TS24560-1:2022 'Clinical evaluation of regenerative knee articular cartilage using delayed gadolinium-enhanced MRI of cartilage (dGEMRIC) and T2 mapping' drafted by us and approved by International Standard Organization.
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Affiliation(s)
- Jingming Gao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Xian Xu
- Correspondence address. E-mail: (X.X.); (J.D.)
| | - Xiaoye Yu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Ye Fu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Hongjie Zhang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Siyi Gu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Dinglingge Cao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Quanyi Guo
- Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries of PLA, Beijing 100853, China
| | - Liming Xu
- Institute for Medical Device Control, National Institutes for Food and Drug Control, Beijing 102629, China
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8
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Zhang J, Matsuura H, Shirakashi R. Prediction of water relaxation time using near infrared spectroscopy. J FOOD PROCESS ENG 2022. [DOI: 10.1111/jfpe.14095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Junkai Zhang
- Institute of Industrial Science, The University of Tokyo Tokyo Japan
| | - Hiroaki Matsuura
- Institute of Industrial Science, The University of Tokyo Tokyo Japan
- Research Fellow of the Japan Society for the Promotion of Science Tokyo Japan
| | - Ryo Shirakashi
- Institute of Industrial Science, The University of Tokyo Tokyo Japan
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9
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Cox HJ, Cooper I, Kaspar HF, Packer MA, Badyal JPS. Anti-biofouling functional surfaces for marine aquaculture. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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10
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Tomarchio L, Macis S, Mosesso L, Nguyen LT, Grilli A, Guidi MC, Cava RJ, Lupi S. Low energy electrodynamics of CrI 3 layered ferromagnet. Sci Rep 2021; 11:23405. [PMID: 34862444 PMCID: PMC8642409 DOI: 10.1038/s41598-021-02918-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 11/16/2021] [Indexed: 11/09/2022] Open
Abstract
We report on the optical properties from terahertz (THz) to Near-Infrared (NIR) of the layered magnetic compound CrI3 at various temperatures, both in the paramagnetic and ferromagnetic phase. In the NIR spectral range, we observe an insulating electronic gap around 1.1 eV which strongly hardens with decreasing temperature. The blue shift observed represents a record in insulating materials and it is a fingerprint of a strong electron-phonon interaction. Moreover, a further gap hardening is observed below the Curie temperature, indicating the establishment of an effective interaction between electrons and magnetic degrees of freedom in the ferromagnetic phase. Similar interactions are confirmed by the disappearance of some phonon modes in the same phase, as expected from a spin-lattice interaction theory. Therefore, the optical properties of CrI3 reveal a complex interaction among electronic, phononic and magnetic degrees of freedom, opening many possibilities for its use in 2-Dimensional heterostructures.
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Affiliation(s)
- Luca Tomarchio
- Department of Physics, Sapienza University, Piazzale Aldo Moro 5, 00185, Rome, Italy
- INFN section of Rome, P.Le Aldo Moro, 2, 00185, Rome, Italy
| | - Salvatore Macis
- Department of Physics, Sapienza University, Piazzale Aldo Moro 5, 00185, Rome, Italy
- INFN - Laboratori Nazionali di Frascati, via Enrico Fermi 54, 00044, Frascati, Rome, Italy
| | - Lorenzo Mosesso
- Department of Physics, Sapienza University, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Loi T Nguyen
- Department of Chemistry, Princeton University, Princeton, NJ, 08544, USA
| | - Antonio Grilli
- INFN - Laboratori Nazionali di Frascati, via Enrico Fermi 54, 00044, Frascati, Rome, Italy
| | | | - Robert J Cava
- Department of Chemistry, Princeton University, Princeton, NJ, 08544, USA
| | - Stefano Lupi
- Department of Physics, Sapienza University, Piazzale Aldo Moro 5, 00185, Rome, Italy.
- INFN - Laboratori Nazionali di Frascati, via Enrico Fermi 54, 00044, Frascati, Rome, Italy.
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11
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Buemi G, Sergio Cataliotti R. The Polarizable continuum potential model in the liquid state Calculations. Density functional computational analysis of the anharmonic vibrational spectrum of liquid water. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116941] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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12
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Rosa AS, Disalvo EA, Frias MA. Water Behavior at the Phase Transition of Phospholipid Matrixes Assessed by FTIR Spectroscopy. J Phys Chem B 2020; 124:6236-6244. [DOI: 10.1021/acs.jpcb.0c03719] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A. S. Rosa
- Applied Biophysics and Food Research Center, National University of Santiago del Estero (CIBAAL-UNSE-CONICET), G4200 Santiago del Estero, Argentina
| | - E. A. Disalvo
- Applied Biophysics and Food Research Center, National University of Santiago del Estero (CIBAAL-UNSE-CONICET), G4200 Santiago del Estero, Argentina
| | - M. A. Frias
- Applied Biophysics and Food Research Center, National University of Santiago del Estero (CIBAAL-UNSE-CONICET), G4200 Santiago del Estero, Argentina
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13
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Deng GH, Shen Y, Chen H, Chen Y, Jiang B, Wu G, Yang X, Yuan K, Zheng J. Ordered-to-Disordered Transformation of Enhanced Water Structure on Hydrophobic Surfaces in Concentrated Alcohol-Water Solutions. J Phys Chem Lett 2019; 10:7922-7928. [PMID: 31794227 DOI: 10.1021/acs.jpclett.9b03429] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The effects of hydrophobic solutes on the structure of the surrounding water have been a topic of debate for almost 70 years. However, a consistent description of the physical insight into the causes of the anomalous thermodynamic properties of alcohol-water mixtures is lacking. Here we report experimental results that combined temperature-dependent linear and femtosecond infrared spectroscopy measurements to explore the water structural transformation in concentrated alcohol-water solutions. Experiments show that the enhancement of water structure arises around microhydrophobic interfaces at room temperature in the solutions. As temperature increases, this ordered water structure disappears and a surface topography-dependent new disordered water structure arises at concentrated solutions of large alcohols. The water structural transformation is dependent on not only the length of the alkyl chain but also the clustering of the alcohols. A more-ordered-than-water structure can transform into a less-ordered-than-water structure.
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Affiliation(s)
- Gang-Hua Deng
- State Key Laboratory of Molecular Reaction Dynamics , Dalian Institute of Chemical Physics , Chinese Academy of Sciences, 457 Zhongshan Road , Dalian 116023 , China
| | - Yuneng Shen
- State Key Laboratory of Molecular Reaction Dynamics , Dalian Institute of Chemical Physics , Chinese Academy of Sciences, 457 Zhongshan Road , Dalian 116023 , China
- School of Physical Science and Technology , ShanghaiTech University , Shanghai 201210 , China
| | - Hailong Chen
- Beijing National Laboratory for Condensed Matter Physics, CAS Key Laboratory of Soft Matter Physics , Institute of Physics, Chinese Academy of Sciences , Beijing 100190 , China
| | - Yajing Chen
- State Key Laboratory of Molecular Reaction Dynamics , Dalian Institute of Chemical Physics , Chinese Academy of Sciences, 457 Zhongshan Road , Dalian 116023 , China
| | - Bo Jiang
- State Key Laboratory of Molecular Reaction Dynamics , Dalian Institute of Chemical Physics , Chinese Academy of Sciences, 457 Zhongshan Road , Dalian 116023 , China
| | - Guorong Wu
- State Key Laboratory of Molecular Reaction Dynamics , Dalian Institute of Chemical Physics , Chinese Academy of Sciences, 457 Zhongshan Road , Dalian 116023 , China
| | - Xueming Yang
- State Key Laboratory of Molecular Reaction Dynamics , Dalian Institute of Chemical Physics , Chinese Academy of Sciences, 457 Zhongshan Road , Dalian 116023 , China
| | - Kaijun Yuan
- State Key Laboratory of Molecular Reaction Dynamics , Dalian Institute of Chemical Physics , Chinese Academy of Sciences, 457 Zhongshan Road , Dalian 116023 , China
| | - Junrong Zheng
- College of Chemistry and Molecular Engineering, Beijing National Laboratory for Molecular Sciences , Peking University , Beijing 100871 , China
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14
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Perturbation of water structure by water-polymer interactions probed by FTIR and polarized Raman spectroscopy. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.11.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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15
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Reddy SK, Moberg DR, Straight SC, Paesani F. Temperature-dependent vibrational spectra and structure of liquid water from classical and quantum simulations with the MB-pol potential energy function. J Chem Phys 2017; 147:244504. [DOI: 10.1063/1.5006480] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Affiliation(s)
- Sandeep K. Reddy
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California 92093, USA
| | - Daniel R. Moberg
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California 92093, USA
| | - Shelby C. Straight
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California 92093, USA
| | - Francesco Paesani
- Department of Chemistry and Biochemistry, Materials Science and Engineering, and San Diego Supercomputer Center, University of California San Diego, La Jolla, California 92093, USA
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16
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Max JJ, Larouche P, Chapados C. Orthogonalyzed H 2 O and D 2 O species obtained from infrared spectra of liquid water at several temperatures. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.07.084] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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17
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Venuti V, Stancanelli R, Acri G, Crupi V, Paladini G, Testagrossa B, Tommasini S, Ventura CA, Majolino D. “Host-guest” interactions in Captisol®/Coumestrol inclusion complex: UV–vis, FTIR-ATR and Raman studies. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.06.054] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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18
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19
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Inoue KI, Ishiyama T, Nihonyanagi S, Yamaguchi S, Morita A, Tahara T. Efficient Spectral Diffusion at the Air/Water Interface Revealed by Femtosecond Time-Resolved Heterodyne-Detected Vibrational Sum Frequency Generation Spectroscopy. J Phys Chem Lett 2016; 7:1811-5. [PMID: 27120559 DOI: 10.1021/acs.jpclett.6b00701] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Femtosecond vibrational dynamics at the air/water interface is investigated by time-resolved heterodyne-detected vibrational sum frequency generation (TR-HD-VSFG) spectroscopy and molecular dynamics (MD) simulation. The low- and high-frequency sides of the hydrogen-bonded (HB) OH stretch band at the interface are selectively excited with special attention to the bandwidth and energy of the pump pulses. Narrow bleach is observed immediately after excitation of the high-frequency side of the HB OH band at ∼3500 cm(-1), compared to the broad bleach observed with excitation of the low-frequency side at ∼3300 cm(-1). However, the time-resolved spectra observed with the two different excitations become very similar at 0.5 ps and almost indistinguishable by 1.0 ps. This reveals that efficient spectral diffusion occurs regardless of the difference of the pump frequency. The experimental observations are well-reproduced by complementary MD simulation. There is no experimental and theoretical evidence that supports extraordinary slow dynamics in the high-frequency side of the HB OH band, which was reported before.
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Affiliation(s)
- Ken-Ichi Inoue
- Molecular Spectroscopy Laboratory, RIKEN , 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Tatsuya Ishiyama
- Department of Applied Chemistry, Graduate School of Science and Engineering, University of Toyama , Toyama 930-8555, Japan
| | - Satoshi Nihonyanagi
- Molecular Spectroscopy Laboratory, RIKEN , 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Ultrafast Spectroscopy Research Team, RIKEN Center for Advanced Photonics (RAP) , 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Shoichi Yamaguchi
- Molecular Spectroscopy Laboratory, RIKEN , 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Applied Chemistry, Graduate School of Science and Engineering, Saitama University , 255 Shimo-Okubo, Sakura, Saitama 338-8570, Japan
| | - Akihiro Morita
- Department of Chemistry, Graduate School of Science, Tohoku University , Sendai 980-8578, Japan
- Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University , Kyoto 615-8520, Japan
| | - Tahei Tahara
- Molecular Spectroscopy Laboratory, RIKEN , 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Ultrafast Spectroscopy Research Team, RIKEN Center for Advanced Photonics (RAP) , 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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20
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Venuti V, Rossi B, Crupi V, D'Amico F, Gessini A, Majolino D, Masciovecchio C, Stancanelli R, Ventura CA. Solute-Solvent Interactions in Aqueous Solutions of Sulfobutyl Ether-β-cyclodextrin As Probed by UV-Raman and FTIR-ATR Analysis. J Phys Chem B 2016; 120:3746-53. [PMID: 27043008 DOI: 10.1021/acs.jpcb.6b02261] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A vibrational study by means of UV-Raman and FTIR-ATR measurements has been performed on sulfobutyl ether β-cyclodextrin (SBE-β-CD)-water solutions, as a function of concentration and temperature, with the aim to provide a molecular-scale explanation of the enhanced performances as carrier agent exhibited by this modified macrocycle with respect to natural cyclodextrin. The attention has been mainly paid to the modifications induced on the vibrational band assigned to the O-H stretching intramolecular mode, in turn related to the dynamical rearrangement occurring in the hydrogen bonding (HB) network of water molecules. The results of our measurements clearly showed a characteristic "structure-breaker" effect on the tetrahedral HB arrangements induced on water molecules by increasing of both temperature and solute concentration, allowing us to also extract thermodynamic parameters. These results could be a key step for a clearer understanding of the connection between the dynamical properties of hydration water and the complexing ability of this cyclodextrin derivative.
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Affiliation(s)
- Valentina Venuti
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università degli Studi di Messina , viale Ferdinando Stagno D'Alcontres 31, 98166 Messina, Italy
| | - Barbara Rossi
- Elettra - Sincrotrone Trieste , Strada Statale 14 km 163.5, Area Science Park, I-34149 Trieste, Italy.,Dipartimento di Fisica, Università degli Studi di Trento , via Sommarive 14, I-38123 Povo, Trento, Italy
| | - Vincenza Crupi
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università degli Studi di Messina , viale Ferdinando Stagno D'Alcontres 31, 98166 Messina, Italy
| | - Francesco D'Amico
- Elettra - Sincrotrone Trieste , Strada Statale 14 km 163.5, Area Science Park, I-34149 Trieste, Italy
| | - Alessandro Gessini
- Elettra - Sincrotrone Trieste , Strada Statale 14 km 163.5, Area Science Park, I-34149 Trieste, Italy
| | - Domenico Majolino
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università degli Studi di Messina , viale Ferdinando Stagno D'Alcontres 31, 98166 Messina, Italy
| | - Claudio Masciovecchio
- Dipartimento di Fisica, Università degli Studi di Trento , via Sommarive 14, I-38123 Povo, Trento, Italy
| | - Rosanna Stancanelli
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche e Ambientali, Università degli Studi di Messina , viale Ferdinando Stagno D'Alcontres 31, 98166 Messina, Italy
| | - Cinzia Anna Ventura
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche e Ambientali, Università degli Studi di Messina , viale Ferdinando Stagno D'Alcontres 31, 98166 Messina, Italy
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21
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Chakrabarty S, Williams ER. The effect of halide and iodate anions on the hydrogen-bonding network of water in aqueous nanodrops. Phys Chem Chem Phys 2016; 18:25483-25490. [DOI: 10.1039/c6cp05033f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The hydration of halide and iodate anions was investigated using electrospray ionization (ESI) mass spectrometry and infrared photodissociation (IRPD) spectroscopy.
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22
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Rossi B, Venuti V, D'Amico F, Gessini A, Mele A, Punta C, Melone L, Crupi V, Majolino D, Trotta F, Masciovecchio C. Toward an understanding of the thermosensitive behaviour of pH-responsive hydrogels based on cyclodextrins. SOFT MATTER 2015; 11:5862-5871. [PMID: 26107102 DOI: 10.1039/c5sm01093d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The molecular mechanism responsible for the thermosensitive behaviour exhibited by pH-responsive cyclodextrin-based hydrogels is explored here with the twofold aim of clarifying some basic aspects of H-bond interactions in hydrogel phases and contributing to a future engineering of cyclodextrin hydrogels for targeted delivery and release of bioactive agents. The degree of H-bond association of water molecules entrapped in the gel network and the extent of intermolecular interactions involving the hydrophobic/hydrophilic moieties of the polymer matrix are probed by UV Raman and IR experiments, in order to address the question of how these different and complementary aspects combine to determine the pH-dependent thermal activation exhibited by these hydrogels. Complementary vibrational spectroscopies are conveniently employed in this study with the aim of safely disentangling the spectral response arising from the two main components of the hydrogel systems, i.e. the polymer matrix and water solvent. The experimental evidence suggests that the dominant effects in the mechanism of solvation of cyclodextrin-based hydrogels are due to the changes occurring, upon increasing of temperature, in the hydrophobicity character of specific chemical moieties of the polymer, as triggered by pH variations. The achievements of this work corroborate the potentiality of the UV Raman scattering technique, in combination with more conventional IR experiments, to provide a "molecular view" of complex macroscopic phenomena exhibited in hydrogel phases.
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Affiliation(s)
- Barbara Rossi
- Elettra-Sincrotrone Trieste, Strada Statale 14 km 163.5, Area Science Park, 34149 Trieste, Italy.
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23
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Ni Y, Skinner JL. IR and SFG vibrational spectroscopy of the water bend in the bulk liquid and at the liquid-vapor interface, respectively. J Chem Phys 2015; 143:014502. [DOI: 10.1063/1.4923462] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Yicun Ni
- Theoretical Chemistry Institute and Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J. L. Skinner
- Theoretical Chemistry Institute and Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, USA
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24
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Cooper RJ, Heiles S, Williams ER. Effects of electronic structure on the hydration of PbNO3(+) and SrNO3(+) ion pairs. Phys Chem Chem Phys 2015; 17:15963-75. [PMID: 26028325 DOI: 10.1039/c5cp01859e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydration of PbNO3(+) and SrNO3(+) with up to 30 water molecules was investigated with infrared photodissociation (IRPD) spectroscopy and with theory. These ions are the same size, yet the IRPD spectra of these ion pairs for n = 2-8 are significantly different. Bands in the bonded O-H region (∼3000-3550 cm(-1)) indicate that the onset of a second hydration shell begins at n = 5 for PbNO3(+) and n = 6 for SrNO3(+). Spectra for [PbNO3](+)(H2O)2-5 and [SrNO3](+)(H2O)3-6 indicate that the structures of clusters with Pb(ii) are hemidirected with a void in the coordinate sphere. A natural bond orbital analysis of [PbNO3](+)(H2O)5 indicates that the anisotropic solvation of the ion is due to a region of asymmetric electron density on Pb(ii) that can be explained by charge transfer from the nitrate and water ligands into unoccupied p-orbitals on Pb(ii). There are differences in the IRPD spectra of PbNO3(+) and SrNO3(+) with up to 25 water molecules attached. IR intensity in the bonded O-H region is blue-shifted by ∼50 cm(-1) in nanodrops containing SrNO3(+) compared to those containing PbNO3(+), indicative of a greater perturbation of the water H-bond network by strontium. The free O-H stretches of surface water molecules in nanodrops containing 10, 15, 20, and 25 water molecules are red-shifted by ∼3-8 cm(-1) for PbNO3(+) compared to those for SrNO3(+), consistent with more charge transfer between water molecules and Pb(ii). These results demonstrate that the different electronic structure of these ions significantly influences how they are solvated.
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Affiliation(s)
- Richard J Cooper
- Department of Chemistry, University of California, Berkeley, California 94720-1460, USA.
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25
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Alcaráz MR, Schwaighofer A, Kristament C, Ramer G, Brandstetter M, Goicoechea H, Lendl B. External-Cavity Quantum Cascade Laser Spectroscopy for Mid-IR Transmission Measurements of Proteins in Aqueous Solution. Anal Chem 2015; 87:6980-7. [DOI: 10.1021/acs.analchem.5b01738] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Mirta R. Alcaráz
- Institute
of Chemical Technologies and Analytics, Vienna University of Technology, Getreidemarkt 9/164-UPA, 1060 Vienna, Austria
- Laboratorio
de Desarrollo Analítico y Quimiometría (LADAQ), Cátedra
de Química Analítica I, Facultad de Bioquímica
y Ciencias Biológicas, Universidad Nacional del Litoral-CONICET, Ciudad Universitaria, 3000 Santa Fe, Argentina
| | - Andreas Schwaighofer
- Institute
of Chemical Technologies and Analytics, Vienna University of Technology, Getreidemarkt 9/164-UPA, 1060 Vienna, Austria
| | - Christian Kristament
- Institute
of Chemical Technologies and Analytics, Vienna University of Technology, Getreidemarkt 9/164-UPA, 1060 Vienna, Austria
| | - Georg Ramer
- Institute
of Chemical Technologies and Analytics, Vienna University of Technology, Getreidemarkt 9/164-UPA, 1060 Vienna, Austria
| | - Markus Brandstetter
- Institute
of Chemical Technologies and Analytics, Vienna University of Technology, Getreidemarkt 9/164-UPA, 1060 Vienna, Austria
| | - Héctor Goicoechea
- Laboratorio
de Desarrollo Analítico y Quimiometría (LADAQ), Cátedra
de Química Analítica I, Facultad de Bioquímica
y Ciencias Biológicas, Universidad Nacional del Litoral-CONICET, Ciudad Universitaria, 3000 Santa Fe, Argentina
| | - Bernhard Lendl
- Institute
of Chemical Technologies and Analytics, Vienna University of Technology, Getreidemarkt 9/164-UPA, 1060 Vienna, Austria
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26
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Singh PC. 2D heterodyne-detected sum frequency generation study on the ultrafast vibrational dynamics of H2O and HOD water at charged interfaces. J Chem Phys 2015; 142:212431. [DOI: 10.1063/1.4918644] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Prashant C. Singh
- Molecular Spectroscopy Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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27
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DiTucci MJ, Heiles S, Williams ER. Role of Water in Stabilizing Ferricyanide Trianion and Ion-Induced Effects to the Hydrogen-Bonding Water Network at Long Distance. J Am Chem Soc 2015; 137:1650-7. [DOI: 10.1021/ja5119545] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Matthew J. DiTucci
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
| | - Sven Heiles
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
| | - Evan R. Williams
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
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28
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Rossi B, Venuti V, Mele A, Punta C, Melone L, Crupi V, Majolino D, Trotta F, D’Amico F, Gessini A, Masciovecchio C. Probing the molecular connectivity of water confined in polymer hydrogels. J Chem Phys 2015; 142:014901. [DOI: 10.1063/1.4904946] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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29
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Crupi V, Fontana A, Majolino D, Mele A, Melone L, Punta C, Rossi B, Rossi F, Trotta F, Venuti V. Hydrogen-bond dynamics of water confined in cyclodextrin nanosponges hydrogel. J INCL PHENOM MACRO 2014. [DOI: 10.1007/s10847-014-0387-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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30
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Bergonzi I, Mercury L, Brubach JB, Roy P. Gibbs free energy of liquid water derived from infrared measurements. Phys Chem Chem Phys 2014; 16:24830-40. [DOI: 10.1039/c4cp03466j] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A completely new set of IR bands of liquid water from 4 cm−1 to 4000 cm−1 is studied from spectroscopic and thermodynamic viewpoints over a large thermal range, evidencing the so-called isosbestic points on the different absorption bands.
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Affiliation(s)
- Isabelle Bergonzi
- Institut des Sciences de la Terre d'Orléans
- UMR 7327 Université d'Orléans/CNRS/BRGM
- 45071 Orléans cedex, France
| | - Lionel Mercury
- Institut des Sciences de la Terre d'Orléans
- UMR 7327 Université d'Orléans/CNRS/BRGM
- 45071 Orléans cedex, France
| | - Jean-Blaise Brubach
- Synchrotron SOLEIL
- L'Orme des Merisiers Saint Aubin
- 91192 Gif-sur-Yvette, France
| | - Pascale Roy
- Synchrotron SOLEIL
- L'Orme des Merisiers Saint Aubin
- 91192 Gif-sur-Yvette, France
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31
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Donald W, Williams E. Measuring Absolute Single Half-Cell Reduction Potentials with Mass Spectrometry. ELECTROANALYTICAL CHEMISTRY: A SERIES OF ADVANCES 2013. [DOI: 10.1201/b15576-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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32
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Warren FJ, Perston BB, Royall PG, Butterworth PJ, Ellis PR. Infrared spectroscopy with heated attenuated total internal reflectance enabling precise measurement of thermally induced transitions in complex biological polymers. Anal Chem 2013; 85:3999-4006. [PMID: 23461675 DOI: 10.1021/ac303552s] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report an improved tool for acquiring temperature-resolved fourier transform infrared (FT-IR) spectra of complex polymer systems undergoing thermal transitions, illustrated by application to several phenomena related to starch gelatinization that have proved difficult to study by other means. Starch suspensions from several botanical origins were gelatinized using a temperature-controlled attenuated total reflectance (ATR) crystal, with IR spectra collected every 0.25 °C. By following the 995/1022 cm(-1) peak ratio, clear transitions occurring between 59 and 70 °C were observed, for which the midpoints could be determined accurately by sigmoidal fits. The magnitude of the change in peak ratio was found to be strongly correlated to the enthalpy of gelatinization as measured by differential scanning calorimetry (DSC, R(2) = 0.988). An important advantage of the technique, compared to DSC, is that the signal-to-noise ratio is not reduced when measuring very broad transitions. This has the potential to allow more precise determination of the gelatinization parameters of high-amylose starches, for which gelatinization may take place over several tens of °C.
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Affiliation(s)
- Frederick J Warren
- King's College London, School of Medicine, Diabetes and Nutritional Sciences Division, Biopolymers Group, London, Franklin-Wilkins Building, 150 Stamford Street, London, SE1 9NH, United Kingdom
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33
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Giugliarelli A, Paolantoni M, Morresi A, Sassi P. Denaturation and Preservation of Globular Proteins: The Role of DMSO. J Phys Chem B 2012; 116:13361-7. [DOI: 10.1021/jp308655p] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Marco Paolantoni
- Department of Chemistry, University of Perugia, Via Elce di sotto 8, 06100 Perugia, Italy
| | - Assunta Morresi
- Department of Chemistry, University of Perugia, Via Elce di sotto 8, 06100 Perugia, Italy
| | - Paola Sassi
- Department of Chemistry, University of Perugia, Via Elce di sotto 8, 06100 Perugia, Italy
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34
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Manka A, Pathak H, Tanimura S, Wölk J, Strey R, Wyslouzil BE. Freezing water in no-man's land. Phys Chem Chem Phys 2012; 14:4505-16. [DOI: 10.1039/c2cp23116f] [Citation(s) in RCA: 144] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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35
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Hans KMC, Müller S, Sigrist MW. Infrared attenuated total reflection (IR-ATR) spectroscopy for detecting drugs in human saliva. Drug Test Anal 2011; 4:420-9. [DOI: 10.1002/dta.346] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2011] [Revised: 07/26/2011] [Accepted: 07/26/2011] [Indexed: 11/11/2022]
Affiliation(s)
| | - Susanne Müller
- ETH Zurich; Institute for Quantum Electronics; Zurich; Switzerland
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36
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Sassi P, Giugliarelli A, Paolantoni M, Morresi A, Onori G. Unfolding and aggregation of lysozyme: A thermodynamic and kinetic study by FTIR spectroscopy. Biophys Chem 2011; 158:46-53. [DOI: 10.1016/j.bpc.2011.05.002] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2011] [Revised: 04/29/2011] [Accepted: 05/01/2011] [Indexed: 11/29/2022]
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37
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Prell JS, O’Brien JT, Williams ER. Structural and Electric Field Effects of Ions in Aqueous Nanodrops. J Am Chem Soc 2011; 133:4810-8. [DOI: 10.1021/ja108341t] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- James S. Prell
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
| | - Jeremy T. O’Brien
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
| | - Evan R. Williams
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
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38
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39
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Kitadai N, Yokoyama T, Nakashima S. Temperature dependence of molecular structure of dissolved glycine as revealed by ATR-IR spectroscopy. J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2010.08.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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40
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Reátegui E, Aksan A. Effects of water on the structure and low/high temperature stability of confined proteins. Phys Chem Chem Phys 2010; 12:10161-72. [PMID: 20689888 DOI: 10.1039/c003517c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study well-characterized model proteins were confined in silica nanoporous matrices. Confinement of the proteins in silica matrices allowed us to explore the role of water hydrogen bonding on the structures of the proteins in a broad range of temperatures (-120 degrees C to 95 degrees C). At low temperatures confinement suppressed freezing of water, which remained in the liquid state. We obtained direct evidence that the changes in the hydrogen bonding of water induced changes in the structure of confined proteins. At high temperatures, a reduction of hydrogen bonding of water facilitated protein-silica interactions and the confined proteins underwent denaturation. However, the incorporation of the osmolyte, trehalose, reduced protein-silica interactions, and altered the hydrogen bonding of water. As a result, the high temperature thermal stability of the confined proteins was greatly improved.
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Affiliation(s)
- Eduardo Reátegui
- Biostabilization Laboratory, Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN, USA
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41
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O’Brien JT, Prell JS, Bush MF, Williams ER. Sulfate Ion Patterns Water at Long Distance. J Am Chem Soc 2010; 132:8248-9. [DOI: 10.1021/ja1024113] [Citation(s) in RCA: 121] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Jeremy T. O’Brien
- Department of Chemistry, University of California, Berkeley, California 94720-1460
| | - James S. Prell
- Department of Chemistry, University of California, Berkeley, California 94720-1460
| | - Matthew F. Bush
- Department of Chemistry, University of California, Berkeley, California 94720-1460
| | - Evan R. Williams
- Department of Chemistry, University of California, Berkeley, California 94720-1460
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42
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Li H, Doucette LD, Bousfield D, Tripp CP. Detection of Spores Using Electric Field-Assisted FTIR-ATR. Anal Chem 2010; 82:5053-9. [DOI: 10.1021/ac902984s] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- He Li
- Laboratory for Surface Science and Technology, Department of Chemistry, and Department of Chemical and Biological Engineering, University of Maine, Orono, Maine 04469, and Orono Spectral Solutions, Old Town, Maine 04468
| | - Luke D. Doucette
- Laboratory for Surface Science and Technology, Department of Chemistry, and Department of Chemical and Biological Engineering, University of Maine, Orono, Maine 04469, and Orono Spectral Solutions, Old Town, Maine 04468
| | - Doug Bousfield
- Laboratory for Surface Science and Technology, Department of Chemistry, and Department of Chemical and Biological Engineering, University of Maine, Orono, Maine 04469, and Orono Spectral Solutions, Old Town, Maine 04468
| | - Carl P. Tripp
- Laboratory for Surface Science and Technology, Department of Chemistry, and Department of Chemical and Biological Engineering, University of Maine, Orono, Maine 04469, and Orono Spectral Solutions, Old Town, Maine 04468
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43
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Malsam J, Aksan A. Hydrogen Bonding and Compartmentalization of Water in Supercooled and Frozen Aqueous Acetone Solutions. J Phys Chem B 2010; 114:4238-45. [DOI: 10.1021/jp904381d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jason Malsam
- Biostabilization Laboratory, Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN
| | - Alptekin Aksan
- Biostabilization Laboratory, Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN
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44
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Zhang L, Aksan A. Fourier transform infrared analysis of the thermal modification of human cornea tissue during conductive keratoplasty. APPLIED SPECTROSCOPY 2010; 64:23-29. [PMID: 20132594 DOI: 10.1366/000370210790571918] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
This paper presents a study using in vitro Fourier transform infrared spectroscopy (FT-IR) analysis to determine the thermal damage induced to the human cornea by the conductive keratoplasty (CK) procedure. Human cornea tissues were treated with CK at different radiofrequency power (58-64%) and pulse duration (0.6-1.0 s) settings. The cornea tissues were cryo-sectioned and FT-IR analysis was performed to detect the extent of thermal damage by the second-derivative analysis of the infrared (IR) spectral bands corresponding to protein secondary structure. The protein amide I and II spectral bands measured in vitro mainly arose from collagen. The denatured cornea tissue showed a higher beta-sheet content than the native tissue. The extent of the thermal damage created by the CK treatment depended on power and duration settings, with the latter having a stronger effect. With clinical settings (60%, 0.6 s), the thermal damage area was confined within a radius of 100 microm. CK treatment duration had a more significant effect on the damage zone than the power setting.
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Affiliation(s)
- Li Zhang
- Mechanical Engineering Department, University of Minnesota, Minneapolis 55455, USA
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Malsam J, Aksan A. 88. Presence of confined water clusters in supercooled carbohydrate solutions. Cryobiology 2009. [DOI: 10.1016/j.cryobiol.2009.10.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Donald WA, Leib RD, Demireva M, O’Brien JT, Prell JS, Williams ER. Directly relating reduction energies of gaseous Eu(H2O)n(3+), n = 55-140, to aqueous solution: the absolute SHE potential and real proton solvation energy. J Am Chem Soc 2009; 131:13328-37. [PMID: 19711981 PMCID: PMC2909332 DOI: 10.1021/ja902815v] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
In solution, half-cell potentials are measured relative to other half-cells resulting in a ladder of thermodynamic values that is anchored to the standard hydrogen electrode (SHE), which is assigned an arbitrary value of exactly 0 V. A new method for measuring the absolute SHE potential is introduced in which reduction energies of Eu(H(2)O)(n)(3+), from n = 55 to 140, are extrapolated as a function of the geometric dependence of the cluster reduction energy to infinite size. These measurements make it possible to directly relate absolute reduction energies of these gaseous nanodrops containing Eu(3+) to the absolute reduction enthalpy of this ion in bulk solution. From this value, an absolute SHE potential of +4.11 V and a real proton solvation energy of -269.0 kcal/mol are obtained. The infrared photodissociation spectrum of Eu(H(2)O)(119-124)(3+) indicates that the structure of the surface of the nanodrops is similar to that at the bulk air-water interface and that the hydrogen bonding of interior water molecules is similar to that in aqueous solution. These results suggest that the environment of Eu(3+) in these nanodrops and the surface potential of the nandrops are comparable to those of the condensed phase. This method for obtaining absolute potentials of redox couples has the advantage that no explicit solvation model is required, which eliminates uncertainties associated with these models, making this method potentially more accurate than previous methods.
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Affiliation(s)
- William A. Donald
- Department of Chemistry, University of California, Berkeley, California 94720-1460
| | - Ryan D. Leib
- Department of Chemistry, University of California, Berkeley, California 94720-1460
| | - Maria Demireva
- Department of Chemistry, University of California, Berkeley, California 94720-1460
| | - Jeremy T. O’Brien
- Department of Chemistry, University of California, Berkeley, California 94720-1460
| | - James S. Prell
- Department of Chemistry, University of California, Berkeley, California 94720-1460
| | - Evan R. Williams
- Department of Chemistry, University of California, Berkeley, California 94720-1460
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Reátegui E, Aksan A. Effects of the Low-Temperature Transitions of Confined Water on the Structures of Isolated and Cytoplasmic Proteins. J Phys Chem B 2009; 113:13048-60. [DOI: 10.1021/jp903294q] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Eduardo Reátegui
- Biostabilization Laboratory, Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota
| | - Alptekin Aksan
- Biostabilization Laboratory, Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota
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Malsam J, Aksan A. Hydrogen Bonding and Kinetic/Thermodynamic Transitions of Aqueous Trehalose Solutions at Cryogenic Temperatures. J Phys Chem B 2009; 113:6792-9. [DOI: 10.1021/jp8099434] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jason Malsam
- Biostabilization Laboratory, Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455
| | - Alptekin Aksan
- Biostabilization Laboratory, Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455
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Petersen C, Thøgersen J, Knak Jensen S, Keiding SR, Sassi P. Solvent response to solute photo-dissociation. Phys Chem Chem Phys 2008; 10:990-5. [DOI: 10.1039/b711466d] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Gallina ME, Sassi P, Paolantoni M, Morresi A, Cataliotti RS. Vibrational Analysis of Molecular Interactions in Aqueous Glucose Solutions. Temperature and Concentration Effects. J Phys Chem B 2006; 110:8856-64. [PMID: 16640445 DOI: 10.1021/jp056213y] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A vibrational analysis using FTIR and Raman spectroscopies was carried out on aqueous glucose solutions with a wide range of solute molar fractions and temperatures. The analysis was aimed at revealing structural changes in the local hydrogen-bonding (HB) network of liquid water, correlating these with the conservative properties of biomolecules, and comparing them with those of other sugars. The results of our measurements clearly show that the action of glucose is 2-fold; on one hand, there is a linkage with free hydroxyls of water; on the other, there is a slight lessening of the ordered (tetrahedral) H-bonded assembly of bulk H(2)O. These opposite effects do not balance each other, so the average HB interaction strength decreases on increasing glucose concentration. As a result, there is a reduction in the temperature dependence of solutions structure. In our opinion, this could be related to the low bioprotective action of this carbohydrate.
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Affiliation(s)
- Maria Elena Gallina
- Dipartimento di Chimica, Università di Perugia, Via Elce di Sott, 8, 06100 Perugia, Italy
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