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Kou Y, Zhang XG, Li H, Zhang KL, Xu QC, Zheng QN, Tian JH, Zhang YJ, Li JF. SERS-Based Hydrogen Bonding Induction Strategy for Gaseous Acetic Acid Capture and Detection. Anal Chem 2024; 96:4275-4281. [PMID: 38409670 DOI: 10.1021/acs.analchem.3c05905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Surface-enhanced Raman scattering (SERS) can overcome the existing technological limitations, such as complex processes and harsh conditions in gaseous small-molecule detection, and advance the development of real-time gas sensing at room temperature. In this study, a SERS-based hydrogen bonding induction strategy for capturing and sensing gaseous acetic acid is proposed for the detection demands of gaseous acetic acid. This addresses the challenges of low adsorption of gaseous small molecules on SERS substrates and small Raman scattering cross sections and enables the first SERS-based detection of gaseous acetic acid by a portable Raman spectrometer. To provide abundant hydrogen bond donors and acceptors, 4-mercaptobenzoic acid (4-MBA) was used as a ligand molecule modified on the SERS substrate. Furthermore, a sensing chip with a low relative standard deviation (RSD) of 4.15% was constructed, ensuring highly sensitive and reliable detection. The hydrogen bond-induced acetic acid trapping was confirmed by experimental spectroscopy and density functional theory (DFT). In addition, to achieve superior accuracy compared to conventional methods, an innovative analytical method based on direct response hydrogen bond formation (IO-H/Iref) was proposed, enabling the detection of gaseous acetic acid at concentrations as low as 60 ppb. The strategy demonstrated a superior anti-interference capability in simulated breath and wine detection systems. Moreover, the high reusability of the chip highlights the significant potential for real-time sensing of gaseous acetic acid.
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Affiliation(s)
- Yichuan Kou
- College of Physical Science and Technology, College of Energy, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xia-Guang Zhang
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, College of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
| | - Hongmei Li
- College of Physical Science and Technology, College of Energy, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Kai-Le Zhang
- College of Physical Science and Technology, College of Energy, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Qing-Chi Xu
- College of Physical Science and Technology, College of Energy, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Qing-Na Zheng
- College of Physical Science and Technology, College of Energy, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Jing-Hua Tian
- Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen 361005, China
| | - Yue-Jiao Zhang
- College of Physical Science and Technology, College of Energy, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Jian-Feng Li
- College of Physical Science and Technology, College of Energy, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen 361005, China
- College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China
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JIANG X, WAN D, ZHENG F, XIE Y. Ionization Equilibrium of Water Molecule Dominated Ethanol-water Binary Solution Self-assemble. ELECTROCHEMISTRY 2022. [DOI: 10.5796/electrochemistry.22-00054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Xinyue JIANG
- School of Civil Engineering Architecture and Environment, Hubei University of Technology
| | - Duanji WAN
- School of Civil Engineering Architecture and Environment, Hubei University of Technology
| | - Fuping ZHENG
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University
| | - Yuqun XIE
- School of Bioengineering and Food Science, Hubei University of Technology
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3
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Lengvinaitė D, Aidas K, Kimtys L. Molecular aggregation in liquid acetic acid: insight from molecular dynamics/quantum mechanics modelling of structural and NMR properties. Phys Chem Chem Phys 2019; 21:14811-14820. [PMID: 31225541 DOI: 10.1039/c9cp01892a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The 1H NMR signal of the acidic proton in acetic acid molecules shows a marked upfield shift in the neat liquid as compared to that in low-concentration acetic acid solution in inert solvents where acetic acid cyclic dimers predominate. The underlying reasons for this phenomenon are analyzed in this work by considering classical molecular dynamics simulations and combined quantum mechanics/molecular mechanics calculations of the 1H NMR chemical shift of the acidic proton in the neat liquid and in the cyclic dimer of acetic acid in cyclohexane solution. Recorded trajectories were quantitatively analyzed in terms of different types of molecular aggregates formed in the neat liquid by using a geometrical definition of the hydrogen bond. Both the geometrical analysis and the computational NMR results indicate that the cyclic dimer cannot be the dominating aggregation pattern for acetic acid molecules in the neat liquid. The applied computational approach reproduces the lowering of the 1H NMR chemical shift of the acidic proton in acetic acid when going from cyclohexane solution to the neat liquid very well. The presence of acetic acid aggregates with hydrogen bonding between hydroxyl moieties and of monomeric acetic acid molecules in the neat liquid is found to lead to the observed lowering of the chemical shift, with lesser contribution from the formation of open acetic acid aggregates.
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Affiliation(s)
- Dovilė Lengvinaitė
- Institute of Chemical Physics, Faculty of Physics, Vilnius University, Saulėtekio al. 3, LT-10257 Vilnius, Lithuania.
| | - Kęstutis Aidas
- Institute of Chemical Physics, Faculty of Physics, Vilnius University, Saulėtekio al. 3, LT-10257 Vilnius, Lithuania.
| | - Liudvikas Kimtys
- Institute of Chemical Physics, Faculty of Physics, Vilnius University, Saulėtekio al. 3, LT-10257 Vilnius, Lithuania.
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Alam MS, Ashokkumar B, Siddiq AM. The density, dynamic viscosity and kinematic viscosity of protic and aprotic polar solvent (pure and mixed) systems: An experimental and theoretical insight of thermophysical properties. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.02.097] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Yang B, Li Y, Gong N, Cao X, Wang S, Sun C. Study of molecular association in acetic acid-water binary solution by Raman spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 213:463-466. [PMID: 30772663 DOI: 10.1016/j.saa.2018.08.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 08/13/2018] [Accepted: 08/15/2018] [Indexed: 06/09/2023]
Abstract
Raman spectra of acetic acid-water binary solutions with different concentrations have been measured in order to study molecular association of acetic acid. We find that the symmetric and asymmetric OH stretching vibration of water (3242 and 3443 cm-1) have marked changes of Raman shift when the volume fraction of acetic acid (VAA) is 0.3 and 0.8, respectively, which demonstrates that the hydrogen bonding of the water is affected, causing association molecule (acetic acid-water structure) to undergo two phase transitions. Furthermore, the peak of the HCH bending vibration is blue-shifted at VAA = 0.8, which shows that the acetic acid-acetic acid structure undergoes a phase transition and the acetic acid side-on dimer is formed. These results also indicate that the CH vibration mode in CH⋯O is HCH bending vibration. Finally, the phase transition process of association molecules (hydrated monomer, linear dimer, acetic acid side-on dimer and water-separated dimer) has been obtained in acetic acid-water binary solutions through theoretical analysis.
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Affiliation(s)
- Bo Yang
- Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, China
| | - Yeqiu Li
- Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, China; Key Laboratory of Physics and Technology for Advanced Batteries, College of Physics, Jilin University, Changchun 130012, China.
| | - Nan Gong
- Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, China
| | - Xianwen Cao
- Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, China
| | - Shenghan Wang
- Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, China; Key Laboratory of Physics and Technology for Advanced Batteries, College of Physics, Jilin University, Changchun 130012, China.
| | - Chenglin Sun
- Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, China; Key Laboratory of Physics and Technology for Advanced Batteries, College of Physics, Jilin University, Changchun 130012, China.
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Yoshimura N, Takahashi O, Oura M, Horikawa Y. Electronic States of Acetic Acid in a Binary Mixture of Acetic Acid and 1-Methylimidazole Depend on the Environment. J Phys Chem B 2019; 123:1332-1339. [PMID: 30685981 DOI: 10.1021/acs.jpcb.8b11437] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The unique characteristics of an acetic acid/1-methylimidazole (1-MI) mixture, showing higher electrical conductivity than either neat acetic acid or neat 1-MI, yet consisting of electrically neutral molecules, are reported. We have applied soft X-ray spectroscopy to reveal the electronic states of acetic acid in the acetic acid/1-MI mixture at various mole fractions of acetic acid (χHOAc). The results show that the amount of acetic acid monomer increases in the region of especially high electrical conductivity and the amount of complex of acetic acid and 1-MI formed by sharing molecular orbitals increases in the low electrical conductivity region. There is a little amount of acetic acid monomer in the low electrical conductivity region because the complex inhibits acetic acid from creating its monomer. These results suggest the possibility that the acetic acid monomer is related to electrical conduction.
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Affiliation(s)
- Noriko Yoshimura
- Graduate School of Science and Technology for Innovation , Yamaguchi University , Yamaguchi 753-8512 , Japan.,RIKEN SPring-8 Center, Soft X-ray Spectroscopy Instrumentation Team , Hyogo 679-5148 , Japan
| | - Osamu Takahashi
- RIKEN SPring-8 Center, Soft X-ray Spectroscopy Instrumentation Team , Hyogo 679-5148 , Japan.,Department of Chemistry, Graduate School of Science , Hiroshima University , Higashi-Hiroshima 739-8526 , Japan
| | - Masaki Oura
- RIKEN SPring-8 Center, Soft X-ray Spectroscopy Instrumentation Team , Hyogo 679-5148 , Japan
| | - Yuka Horikawa
- Graduate School of Science and Technology for Innovation , Yamaguchi University , Yamaguchi 753-8512 , Japan.,RIKEN SPring-8 Center, Soft X-ray Spectroscopy Instrumentation Team , Hyogo 679-5148 , Japan
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Gailus T, Krah H, Kühnel V, Rupprecht A, Kaatze U. Carboxylic acids in aqueous solutions: Hydrogen bonds, hydrophobic effects, concentration fluctuations, ionization, and catalysis. J Chem Phys 2019; 149:244503. [PMID: 30599745 DOI: 10.1063/1.5063877] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In the frequency range between 100 kHz and 2 GHz, ultrasonic absorption spectra have been measured for a series of carboxylic acids from formic to enanthic acid, including constitutional isomers. Also investigated have been the spectra for mixtures with water of short-chain formic, acetic, propionic, butyric, and isobutyric acid, in each case covering the complete composition range. The neat carboxylic acids feature two Debye-type relaxation terms with relaxation times between 5.6 and 260 ns as well as 0.14 and 1.4 ns, respectively, at room temperature. Depending on the composition, mixtures with water reveal an additional Debye relaxation term in the intermediate frequency range (acetic acid) or a term subject to a relaxation time distribution (propionic, butyric, and isobutyric acid). The relaxations of the neat acids are assigned to the equilibrium between monomers and single-hydrogen-bonded linear dimers and between linear and twofold-hydrogen-bonded cyclic dimers. The latter equilibrium is considerably catalyzed by hydronium and carboxylate ions. Several mixtures with water indicate one of the up to three Debye relaxations to reflect the protolysis of the organic acid. The term with underlying relaxation time distribution is due to noncritical fluctuations in the local concentrations. The Debye relaxations are evaluated to yield the parameters of the relevant elementary chemical reactions, such as the rate and equilibrium constants and the isentropic reaction volumes. A comparison of the correlation length of concentration fluctuations with data for other aqueous systems confirms the idea that the hydrophobic part of the organic constituent promotes the formation of a micro-heterogeneous liquid structure, whereas the hydrophilic moiety is of minor importance in this respect. The high-frequency limiting absorption suggests the equilibrium between conformers of linear dimers to contribute to the spectra well above the frequency range of measurements.
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Affiliation(s)
- Torsten Gailus
- Drittes Physikalisches Institut, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
| | - Holger Krah
- Drittes Physikalisches Institut, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
| | - Volker Kühnel
- Drittes Physikalisches Institut, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
| | - Andreas Rupprecht
- Drittes Physikalisches Institut, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
| | - Udo Kaatze
- Drittes Physikalisches Institut, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
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8
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Kneale C, Brown SD. Band target entropy minimization and target partial least squares for spectral recovery and quantitation. Anal Chim Acta 2018; 1031:38-46. [PMID: 30119742 DOI: 10.1016/j.aca.2018.07.054] [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: 03/28/2018] [Revised: 07/11/2018] [Accepted: 07/23/2018] [Indexed: 10/28/2022]
Abstract
The resolution and quantitation of pure spectra of minority components in measurements of chemical mixtures without prior knowledge of the mixture is a challenging problem. In this work, a combination of band target entropy minimization (BTEM) and target partial least squares (T-PLS) was used to obtain estimates for single pure component spectra and to calibrate those estimates in a true, one-at-a-time fashion. This approach allows for minor components to be targeted and their relative amounts estimated in the presence of other varying components in spectral data. The use of T-PLS estimation is an improvement to the BTEM method because it overcomes the need to identify all of the pure components prior to estimation. Estimated amounts from this combination were found to be similar to those obtained from a standard method, multivariate curve resolution-alternating least squares (MCR-ALS), on a simple, three component mixture dataset. Studies from two experimental datasets demonstrate where the combination of BTEM and T-PLS was used to model the pure component spectra and to obtain concentration profiles of minor components, but MCR-ALS could not.
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Affiliation(s)
- Casey Kneale
- Department of Chemistry and Biochemistry, University of Delaware, 163 The Green, Newark, DE, 19716, USA
| | - Steven D Brown
- Department of Chemistry and Biochemistry, University of Delaware, 163 The Green, Newark, DE, 19716, USA.
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9
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Chen WL, Lin ST. A Priori Prediction of the Vapor–Liquid Equilibria of Mixtures of Acetic Acid and Water or Alcohols by Explicit Consideration of Hydrogen-Bonded Dimers. Ind Eng Chem Res 2014. [DOI: 10.1021/ie502492n] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wei-Lin Chen
- Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan 10617
| | - Shiang-Tai Lin
- Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan 10617
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10
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Li Z, Hao A, Li X. β-Cyclodextrin supramolecular organogels induced by different carboxylic acids that exhibit diverse morphologies. J Mol Liq 2014. [DOI: 10.1016/j.molliq.2014.03.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Quardokus RC, Wasio NA, Christie JA, Henderson KW, Forrest RP, Lent CS, Corcelli SA, Alex Kandel S. Hydrogen-bonded clusters of ferrocenecarboxylic acid on Au(111). Chem Commun (Camb) 2014; 50:10229-32. [DOI: 10.1039/c4cc03664f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A STM image of ferrocenecarboxylic acid clusters on Au(111), showing molecular clusters with both double-row and regular pentagonal geometries.
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Affiliation(s)
| | - Natalie A. Wasio
- Department of Chemistry and Biochemistry
- University of Notre Dame
- Notre Dame, USA
| | - John A. Christie
- Department of Chemistry and Biochemistry
- University of Notre Dame
- Notre Dame, USA
| | | | - Ryan P. Forrest
- Department of Chemistry and Biochemistry
- University of Notre Dame
- Notre Dame, USA
| | - Craig S. Lent
- Department of Electrical Engineering
- University of Notre Dame
- Notre Dame, USA
| | - Steven A. Corcelli
- Department of Chemistry and Biochemistry
- University of Notre Dame
- Notre Dame, USA
| | - S. Alex Kandel
- Department of Chemistry and Biochemistry
- University of Notre Dame
- Notre Dame, USA
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12
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Schröder D, Buděšínský M, Roithová J. Deprotonation of p-Hydroxybenzoic Acid: Does Electrospray Ionization Sample Solution or Gas-Phase Structures? J Am Chem Soc 2012; 134:15897-905. [DOI: 10.1021/ja3060589] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Detlef Schröder
- Institute of Organic Chemistry and Biochemistry, Flemingovo nám. 2,
16610 Prague 6, Czech Republic
| | - Miloš Buděšínský
- Institute of Organic Chemistry and Biochemistry, Flemingovo nám. 2,
16610 Prague 6, Czech Republic
| | - Jana Roithová
- Department of Organic Chemistry,
Faculty of Sciences, Charles University in Prague, Hlavova 8, 12843 Prague 2, Czech Republic
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13
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Li M, Zeng C, Zhang L. Hydrothermal synthesis of SAPO-5 with novel morphologies from hydrogels containing acetic acid and high concentration of triethylamine under neutral or alkaline conditions. CrystEngComm 2012. [DOI: 10.1039/c2ce06645a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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14
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Horikawa Y, Arai H, Tokushima T, Shin S. Spectral fingerprint in X-ray absorption for hydrogen-bonded dimer formation of acetic acids in solution. Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2011.11.061] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Tjahjono M, Cheng S, Li C, Garland M. Self-Association of Acetic Acid in Dilute Deuterated Chloroform. Wide-Range Spectral Reconstructions and Analysis using FTIR Spectroscopy, BTEM, and DFT. J Phys Chem A 2010; 114:12168-75. [DOI: 10.1021/jp106720v] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Martin Tjahjono
- Institute of Chemical and Engineering Sciences, Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, Singapore 627833, Singapore
| | - Shuying Cheng
- Institute of Chemical and Engineering Sciences, Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, Singapore 627833, Singapore
| | - Chuanzhao Li
- Institute of Chemical and Engineering Sciences, Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, Singapore 627833, Singapore
| | - Marc Garland
- Institute of Chemical and Engineering Sciences, Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, Singapore 627833, Singapore
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16
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Hydration mechanism on a poly(methacrylic acid) film studied by in situ attenuated total reflection infrared spectroscopy. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.09.060] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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17
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Safonova LP, Pryakhin AA, Shmukler LE, Fadeeva YA. NMR studies of N,N-dimethylformamide mixtures with acetic acid and ethanol. RUSS J GEN CHEM+ 2009. [DOI: 10.1134/s1070363209020133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Mitchell-Koch KR, Thompson WH. Infrared spectra of a model phenol-amine proton transfer complex in nanoconfined CH3Cl. J Phys Chem B 2008; 112:7448-59. [PMID: 18517239 DOI: 10.1021/jp076714e] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The vibrational spectra of a model phenol-amine proton transfer complex dissolved in CH3Cl solvent confined in a 12 A radius spherical hydrophobic cavity were calculated using mixed quantum-classical molecular dynamics simulations. The reaction free energy of the proton transfer complex was varied in order to explore the contributions to the vibrational absorption band from product and reactant species. The vibrational spectra of the model proton transfer complex resulted in motionally narrowed spectral linewidths with two distinct peaks for products and reactants in cases where the system undergoes chemical exchange. It was found that the n=1 and n=2 vibrational excited states combine to form diabatic states such that the spectra have contributions from both n=0 --> n=1 and n=0 --> n=2 transitions. A strong relationship between the instantaneous vibrational frequency and a collective solvent coordinate was found that assists in understanding the origin of the spectral features.
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Tjahjono M, Allian AD, Garland M. Experimental Dipole Moments for Nonisolatable Acetic Acid Structures in a Nonpolar Medium. A Combined Spectroscopic, Dielectric, and DFT Study for Self-Association in Solution. J Phys Chem B 2008; 112:6448-59. [DOI: 10.1021/jp800609w] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Martin Tjahjono
- Department of Chemical and Biomolecular Engineering, 4 Engineering Drive 4, National University of Singapore 117576, Singapore, and Institute of Chemical and Engineering Sciences, Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island 627833, Singapore
| | - Ayman Daoud Allian
- Department of Chemical and Biomolecular Engineering, 4 Engineering Drive 4, National University of Singapore 117576, Singapore, and Institute of Chemical and Engineering Sciences, Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island 627833, Singapore
| | - Marc Garland
- Department of Chemical and Biomolecular Engineering, 4 Engineering Drive 4, National University of Singapore 117576, Singapore, and Institute of Chemical and Engineering Sciences, Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island 627833, Singapore
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20
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Rodríguez-Cuamatzi P, Arillo-Flores OI, Bernal-Uruchurtu MI, Höpfl H. Experimental and Theoretical Analysis of the Hydrogen-bonding Motifs Formed Between the Carboxyl and the Carboxylate Group: Towards a Systematic Classification of their Supramolecular Motifs. Supramol Chem 2007. [DOI: 10.1080/10610270701474439] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- P. Rodríguez-Cuamatzi
- a Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos , Av. Universidad 1001, C.P. 62209, Cuernavaca, México
| | - O. I. Arillo-Flores
- a Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos , Av. Universidad 1001, C.P. 62209, Cuernavaca, México
| | - M. I. Bernal-Uruchurtu
- a Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos , Av. Universidad 1001, C.P. 62209, Cuernavaca, México
| | - H. Höpfl
- a Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos , Av. Universidad 1001, C.P. 62209, Cuernavaca, México
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21
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Alía JM, Edwards HGM. Vibrational spectroscopic properties of hydrogen bonded acetonitrile studied by DFT. J Phys Chem A 2007; 109:7977-87. [PMID: 16834180 DOI: 10.1021/jp051892y] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Vibrational properties (band position, Infrared and Raman intensities) of the acetonitrile C[triple bond]N stretching mode were studied in 27 gas-phase medium intensity (length range: = 1.71-2.05 angstroms; -deltaE range = 13-48 kJ/mol) hydrogen-bonded 1:1 complexes of CH3CN with organic and inorganic acids using density functional theory (DFT) calculations [B3LYP-6-31++G(2d,2p)]. Furthermore, general characteristics of the hydrogen bonds and vibrational changes in the OH stretching band of the acids were also considered. Experimentally observed blue-shifts of the C[triple bond]N stretching band promoted by the hydrogen bonding, which shortens the triple bond length, are very well reproduced and quantitatively depend on the hydrogen bond length. Both predicted enhancement of the infrared and Raman nu(C[triple bond]N) band intensities are in good agreement with the experimental results. Infrared band intensity increase is a direct function of the hydrogen bond energy. However, the predicted increase in the Raman band intensity increase is a more complex function, depending simultaneously on the characteristics of both the hydrogen bond (C[triple bond]N bond length) and the H-donating acid polarizability. Accounting for these two parameters, the calculated nu(C[triple bond]N) Raman intensities of the complexes are explained with a mean error of +/- 2.4%.
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Affiliation(s)
- Jose M Alía
- Departamento de Química-Física, E.U.I.T.A., Universidad de Castilla-La Mancha, Ronda de Calatrava 7, 13071 Ciudad Real, Spain.
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Nose A, Myojin M, Hojo M, Ueda T, Okuda T. Proton nuclear magnetic resonance and Raman spectroscopic studies of Japanese sake, an alcoholic beverage. J Biosci Bioeng 2005; 99:493-501. [PMID: 16233822 DOI: 10.1263/jbb.99.493] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2004] [Accepted: 02/16/2005] [Indexed: 11/17/2022]
Abstract
The hydrogen-bonding property of water--ethanol in Japanese sake, a kind of brewage, was examined on the basis of both (1)H NMR chemical shifts of the OH of water--ethanol and the Raman OH stretching spectra. In 20% (v/v) EtOH-H(2)O solution, amino acids as well as organic acids caused low-field chemical shifts, i.e., the development of a hydrogen-bonding structure. Additional functional groups, apart from the essential amino- and carboxyl groups, in amino acids caused differences in their effects. The low-field chemical shifts caused by solutes were demonstrated under constant pH conditions maintained by sodium hydrogen citrate. Using both the measurement of (1)H NMR chemical shifts and Raman OH stretching spectra, the strength of the hydrogen bond of water--ethanol in Japanese sake products was found to be correlated with the total concentration of organic acids and amino acids. Glucose or saccharides should not have a strengthening effect on the hydrogen bond of water--ethanol. The effects of the main inorganic ions and amines were also discussed. It was concluded that chemical components originating from the starting material, rice, or products produced by microorganisms during the ethanol fermentation affect the hydrogen-bonding structure in Japanese sake.
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Affiliation(s)
- Akira Nose
- Graduate School of Science, Kochi University, 2-5-1 Akebono-cho, Kochi 780-8520, Japan
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Nose A, Hamasaki T, Hojo M, Kato R, Uehara K, Ueda T. Hydrogen bonding in alcoholic beverages (distilled spirits) and water-ethanol mixtures. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2005; 53:7074-81. [PMID: 16131113 DOI: 10.1021/jf058061+] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The hydrogen-bonding properties of water-ethanol of alcoholic beverages and water-ethanol mixtures of the corresponding ethanol contents were examined on the basis of OH proton NMR chemical shifts and the Raman OH stretching spectra of water and ethanol. Japanese shochu, an unaged distilled spirit of 25% (v/v) alcoholic content made from various grains, was provided for the samples; it is a high-purity spirit as it contains only small amounts of dissolved components, like typical vodka, gin, and white rum. The hydrogen-bonding structure in shochu containing some acids was found to be different from that of the water-ethanol mixture with corresponding ethanol content. It was concluded that, by the presence of small amounts of organic acids, the water-ethanol hydrogen-bonding structure was strengthened, at the same time, the proton exchange between water and ethanol molecules was promoted in shochu, compared with the water-ethanol mixture. The NMR chemical shifts of fruit cocktail drinks suggested that the hydrogen bonding of water-ethanol in the solution was developed by organic acids and (poly)phenols from fruit juices.
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Affiliation(s)
- Akira Nose
- Graduate School of Science and Department of Chemistry, Faculty of Science, Kochi University, Akebono-cho, Kochi 780-8520, Japan
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Johnson CM, Tyrode E, Baldelli S, Rutland MW, Leygraf C. A Vibrational Sum Frequency Spectroscopy Study of the Liquid−Gas Interface of Acetic Acid−Water Mixtures: 1. Surface Speciation. J Phys Chem B 2004; 109:321-8. [PMID: 16851018 DOI: 10.1021/jp047338q] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Aqueous acetic acid solutions have been studied by vibrational sum frequency spectroscopy (VSFS) in order to acquire molecular information about the liquid-gas interface. The concentration range 0-100% acetic acid has been studied in the CH/OH and the C-O/C=O regions, and in order to clarify peak assignments, experiments with deuterated acetic acid and water have also been performed. Throughout the whole concentration range, the acetic acid is proven to be protonated. It is explicitly shown that the structure of a water surface becomes disrupted even at small additions of acetic acid. Furthermore, the spectral evolution upon increasing the concentration of acetic acid is explained in terms of the different complexes of acetic acid molecules, such as the hydrated monomer, linear dimer, and cyclic dimer. In the C=O region, the hydrated monomer is concluded to give rise to the sum frequency (SF) signal, and in the CH region, the cyclic dimer contributes to the signal as well. The combination of results from the CH/OH and the C-O/C=O regions allows a thorough characterization of the behavior of the acetic acid molecules at the interface to be obtained.
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Affiliation(s)
- C Magnus Johnson
- Division of Corrosion Science, Royal Institute of Technology, Drottning Kristinas Väg 51, SE-100 44 Stockholm, Sweden
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Tyrode E, Johnson CM, Baldelli S, Leygraf C, Rutland MW. A Vibrational Sum Frequency Spectroscopy Study of the Liquid−Gas Interface of Acetic Acid−Water Mixtures: 2. Orientation Analysis. J Phys Chem B 2004; 109:329-41. [PMID: 16851019 DOI: 10.1021/jp047337y] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Vibrational sum frequency spectroscopy has been used to investigate the surface of aqueous acetic acid solutions. By studying the methyl and carbonyl vibrations with different polarization combinations, an orientation analysis of the acetic acid molecules has been performed in the concentration range 0-100%. The surface tension of acetic acid solutions was also measured in order to obtain the surface concentration. The orientation of the interfacial acetic acid molecules was found to remain essentially constant in an upright position with the methyl group directed toward the gas phase in the whole concentration range. The tilt angle (theta(CH)3) of the symmetry axis of the methyl group with respect to the surface normal was found to be lower than 15 degrees when considering a delta distribution of angles or as narrow as 0 +/- 11 degrees when assuming a Gaussian distribution. Further investigations showed that the C=O bond tilt (theta(C)(=)(O)) of the acetic acid hydrated monomer was constant and close to 55 degrees in the concentration range where it was detected. Finally, the orientation information is discussed in terms of different species of acetic acid, where the formation of a surface layer of acetic acid cyclic dimers is proposed at high acid concentrations.
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Affiliation(s)
- Eric Tyrode
- Department of Chemistry, Surface Chemistry, Royal Institute of Technology, Drottning Kristinas Väg 51, SE-100 44 Stockholm, Sweden
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