skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Simulations of the infrared, Raman, and 2D-IR photon echo spectra of water in nanoscale silica pores

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.4949766· OSTI ID:1252733
 [1];  [2];  [1]
  1. Univ. of Kansas, Lawrence, KS (United States)
  2. Sorbonne Univ., Paris (France)

Vibrational spectroscopy is frequently used to characterize nanoconfined liquids and probe the effect of the confining framework on the liquid structure and dynamics relative to the corresponding bulk fluid. However, it is still unclear what molecular-level information can be obtained from such measurements. In this Paper, we address this question by using molecular dynamics (MD) simulations to reproduce the linear infrared (IR), Raman, and two-dimensional IR (2D-IR) photon echo spectra for water confined within hydrophilic (hydroxyl-terminated) silica mesopores. To simplify the spectra the OH stretching region of isotopically dilute HOD in D2O is considered. An empirical mapping approach is used to obtain the OH vibrational frequencies, transition dipoles, and transition polarizabilities from the MD simulations. The simulated linear IR and Raman spectra are in good general agreement with measured spectra of water in mesoporous silica reported in the literature. The key effect of confinement on the water spectrum is a vibrational blueshift for OH groups that are closest to the pore interface. The blueshift can be attributed to the weaker hydrogen bonds (H-bonds) formed between the OH groups and silica oxygen acceptors. Non-Condon effects greatly diminish the contribution of these OH moieties to the linear IR spectrum, but these weaker H-bonds are readily apparent in the Raman spectrum. The 2D-IR spectra have not yet been measured and thus the present results represent a prediction. Lastly, the simulated spectra indicate that it should be possible to probe the slower spectral diffusion of confined water compared to the bulk liquid by analysis of the 2D-IR spectra.

Research Organization:
Univ. of Kansas, Lawrence, KS (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FG02-05ER15708
OSTI ID:
1252733
Alternate ID(s):
OSTI ID: 1254032
Journal Information:
Journal of Chemical Physics, Vol. 144, Issue 19; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 17 works
Citation information provided by
Web of Science

References (81)

Structure and dynamic properties of liquids confined in MCM-41 mesopores journal February 2007
Vibrational Dynamics of Water within Mesoporous Materials at Different Hydration Levels during Adsorption and Desorption Processes journal September 2009
Confined geometry effects on reorientational dynamics of molecular liquids in porous silica glasses journal November 1991
Molecular Dynamics Simulation of Aerosol-OT Reverse Micelles journal November 2009
Are water simulation models consistent with steady-state and ultrafast vibrational spectroscopy experiments? journal November 2007
Dynamics of Nanoscopic Water:  Vibrational Echo and Infrared Pump−Probe Studies of Reverse Micelles journal November 2005
IR and Raman spectra of liquid water: Theory and interpretation journal June 2008
Diffusion of Simple Liquids in Porous Sol-Gel Glass journal November 1995
A new insight on the hydrogen bonding structures of nanoconfined water: a Raman study journal January 2008
IR investigations of water structure in Aerosol OT reverse micellar aggregates journal May 1993
Simulations of Infrared Spectra of Nanoconfined Liquids: Acetonitrile Confined in Nanoscale, Hydrophilic Silica Pores journal March 2009
Computational Studies of Pressure, Temperature, and Surface Effects on the Structure and Thermodynamics of Confined Water journal May 2012
Water DynamicsThe Effects of Ions and Nanoconfinement journal May 2008
Neutron Scattering and Dielectric Studies on Dynamics of Methanol and Ethanol Confined in MCM-41 journal July 2008
Vibrational Spectroscopy and Dynamics of Water Confined inside Reverse Micelles journal November 2009
Taking apart the two-dimensional infrared vibrational echo spectra: More information and elimination of distortions journal May 2008
Supercooling and freezing processes in nanoconfined water by time-resolved optical Kerr effect spectroscopy journal April 2015
Origins of the non-exponential reorientation dynamics of nanoconfined water journal November 2014
Ultrafast Vibrational Dynamics of Water Confined in Phospholipid Reverse Micelles journal May 2012
Rotational and vibrational relaxation of small molecules in porous silica gels journal September 1990
Combined electronic structure/molecular dynamics approach for ultrafast infrared spectroscopy of dilute HOD in liquid H2O and D2O journal May 2004
Fast Parallel Algorithms for Short-Range Molecular Dynamics journal March 1995
Testing the Core/Shell Model of Nanoconfined Water in Reverse Micelles Using Linear and Nonlinear IR Spectroscopy journal April 2006
Structure and dynamics of water confined in silica nanopores journal November 2011
Low Temperature Properties of Acetonitrile Confined in MCM-41 journal December 2005
Confinement Effects on the Dynamics of Liquid Carbon Disulfide journal October 1995
Confined Polar Mixtures within Cylindrical Nanocavities journal June 2010
Theoretical vibrational sum-frequency generation spectroscopy of water near lipid and surfactant monolayer interfaces journal November 2014
Molecular dynamics simulation of water confined in a nanopore of amorphous silica journal December 2009
Water in Nonpolar Confinement: From Nanotubes to Proteins and Beyond journal May 2008
Analysis of Water in Confined Geometries and at Interfaces journal June 2010
Water Dynamics in Salt Solutions Studied with Ultrafast Two-Dimensional Infrared (2D IR) Vibrational Echo Spectroscopy journal September 2009
Raman Study of Vibrational and Rotational Relaxation of Liquid Benzene- d 6 Confined to Nanoporous Silica Glasses journal January 1996
Non-exponential kinetic behaviour of confined water journal January 2000
Thermodynamic Driving Forces for Dye Molecule Position and Orientation in Nanoconfined Solvents journal September 2014
Ultrafast Dynamics in Reverse Micelles journal May 2009
Structure of Methanol Confined in MCM-41 Investigated by Large-Angle X-ray Scattering Technique journal January 2005
Local hydrogen bonding dynamics and collective reorganization in water: Ultrafast infrared spectroscopy of HOD/D2O journal February 2005
Solvation Dynamics and Proton Transfer in Nanoconfined Liquids journal May 2011
Vibrational spectroscopy of water in hydrated lipid multi-bilayers. II. Two-dimensional infrared and peak shift observables within different theoretical approximations journal October 2011
A trapped water network in nanoporous material: the role of interfaces journal January 2011
Comparison of the Orientational Dynamics of Water Confined in Hydrophobic and Hydrophilic Nanopores journal October 2002
Orientational Dynamics of Liquids Confined in Nanoporous Sol−Gel Glasses Studied by Optical Kerr Effect Spectroscopy journal August 2003
Testing a Two-State Model of Nanoconfined Liquids:  Conformational Equilibrium of Ethylene Glycol in Amorphous Silica Pores journal December 2006
Reorientation dynamics of nanoconfined water: Power-law decay, hydrogen-bond jumps, and test of a two-state model journal January 2012
Geometry and Nanolength Scales versus Interface Interactions: Water Dynamics in AOT Lamellar Structures and Reverse Micelles journal June 2009
Molecular Dynamics Simulations of the Interior of Aqueous Reverse Micelles journal February 2000
A molecular dynamics method for simulations in the canonical ensemble journal June 1984
Infrared and Raman Line Shapes of Dilute HOD in Liquid H 2 O and D 2 O from 10 to 90 °C journal July 2005
Neutron Scattering Study on Dynamics of Water Molecules in MCM-41. 2. Determination of Translational Diffusion Coefficient journal June 2005
Interoscillator coupling effects on the OH stretching band of liquid water journal January 1992
Raman spectroscopy: Probing dynamics of water molecules confined in nanoporous silica glasses journal February 2007
Confinement or the Nature of the Interface? Dynamics of Nanoscopic Water journal November 2007
Temperature Dependence of Hydrogen Bonding and Freezing Behavior of Water in Reverse Micelles journal September 2005
A comparative study on bulk and nanoconfined water by time-resolved optical Kerr effect spectroscopy journal January 2013
Anomalous dynamics of water confined in MCM-41 at different hydrations journal June 2010
X-ray diffraction study on monolayer and capillary-condensed acetonitrile in mesoporous MCM-41 at low temperatures journal November 2011
Dynamics of Nanoconfined Supercooled Liquids journal May 2011
“Similarities” between confined and supercooled water journal January 2009
Finite Size Effects on Hydrogen Bonds in Confined Water journal October 2008
Femtosecond OH Bending Dynamics of Water Nanopools Confined In Reverse Micelles journal May 2013
Water structure, dynamics, and vibrational spectroscopy in sodium bromide solutions journal October 2009
Raman scattering study of liquid ethylene glycol confined to nanoporous silica glasses journal January 2001
Water dynamics in large and small reverse micelles: From two ensembles to collective behavior journal July 2009
Water dynamics in silica nanopores: The self-intermediate scattering functions journal June 2012
Robustness of Frequency, Transition Dipole, and Coupling Maps for Water Vibrational Spectroscopy journal June 2013
Molecular Simulation of the Phase Behavior of Water Confined in Silica Nanopores journal June 2007
Dynamics of Water Confined in Reversed Micelles: Multidimensional Vibrational Spectroscopy Study journal September 2013
Hydrogen bonding and Raman, IR, and 2D-IR spectroscopy of dilute HOD in liquid D2O journal June 2007
Water Dynamics at the Interface in AOT Reverse Micelles journal June 2009
The missing term in effective pair potentials journal November 1987
Polarizability anisotropy relaxation in nanoconfinement: Molecular simulation study of water in cylindrical silica pores journal November 2014
Dynamics of Water Confined in Clay Minerals journal June 2012
Raman study of vibrational dephasing in liquid CH 3 CN and CD 3 CN journal April 1977
Dynamics of confined methyl iodide studied by Raman spectroscopy journal January 2000
Canonical dynamics: Equilibrium phase-space distributions journal March 1985
Concepts and Methods of 2D Infrared Spectroscopy book January 2011
Finite Size Effects on Hydrogen Bonds in Confined Water journal October 2008
Testing the Core/Shell Model of Nanoconfined Water in Reverse Micelles Using Linear and Nonlinear IR Spectroscopy journal August 2006
A molecular dynamics method for simulations in the canonical ensemble journal January 2002
A comparative study on bulk and nanoconfined water by time-resolved optical Kerr effect spectroscopy text January 2013

Cited By (3)

Hydration in silica based mesoporous materials: a DFT model journal January 2016
Water-anion hydrogen bonding dynamics: Ultrafast IR experiments and simulations journal June 2017
Perspective: Dynamics of confined liquids journal November 2018