Table of Contents

May 10, 2007
Volume 111, Issue 18
Pages 4639-5029

About the Cover: Dynamics, reactivity, transport, heterogeneous structure, complex phase behavior, energy and catalysis applications. The artwork was selected from among the papers appearing in this issue to symbolize some of the themes evident among the collection of articles. The left-hand side represents important energy-related applications of ionic liquids including, from top to bottom, dye-sensitized solar cells (jp0671446, p 4763), phase-transfer catalysis (jp0677952, p 4951), and nuclear separations (jp0663154, p 4659). The illustrations in the upper right (jp066481b, p 4669, and jp067705t, p 4641) signify the emerging evidence for the existence of nanoscale domains of order or segregation in ionic liquids. The lower right figure (jp067273m, p 4978) stands for the variety of ionic liquid dynamical studies reported in this issue. Click here to see article 1.Click here to see article 2.

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EDITORIAL

The Physical Chemistry of Ionic Liquids

pp 4639–4640
Publication Date (Web): May 3, 2007 (Article)
DOI: 10.1021/jp072262u

ARTICLES

Nanoscale Segregation in Room Temperature Ionic Liquids

Alessandro Triolo, Olga Russina, Hans-Jurgen Bleif, and Emanuela Di Cola
pp 4641–4644
Publication Date (Web): February 28, 2007 (Article)
DOI: 10.1021/jp067705t

Ion Gels by Self-Assembly of a Triblock Copolymer in an Ionic Liquid

Yiyong He, Paul G. Boswell, Philippe Bühlmann, and Timothy P. Lodge
pp 4645–4652
Publication Date (Web): December 1, 2006 (Article)
DOI: 10.1021/jp064574n

Anharmonic Effects in Ammonium Nitrate and Hydroxylammonium Nitrate Clusters

Malika Kumarasiri, Chet Swalina, and Sharon Hammes-Schiffer
pp 4653–4658
Publication Date (Web): January 3, 2007 (Article)
DOI: 10.1021/jp065569m

Solvation of Uranium Hexachloro Complexes in Room-Temperature Ionic Liquids. A Molecular Dynamics Investigation in Two Liquids

Rachel Schurhammer and Georges Wipff
pp 4659–4668
Publication Date (Web): December 21, 2006 (Article)
DOI: 10.1021/jp0663154

Nanostructural Organization and Anion Effects on the Temperature Dependence of the Optical Kerr Effect Spectra of Ionic Liquids

Dong Xiao, Justin Rajesh Rajian, Amanda Cady, Shengfu Li, Richard A. Bartsch, and Edward L. Quitevis
pp 4669–4677
Publication Date (Web): January 18, 2007 (Article)
DOI: 10.1021/jp066481b

Conductivity−Viscosity−Structure:  Unpicking the Relationship in an Ionic Liquid

Mathieu Salanne, Christian Simon, and Pierre TurqPaul A. Madden
pp 4678–4684
Publication Date (Web): March 3, 2007 (Article)
DOI: 10.1021/jp067073a

Tetraalkylphosphonium Polyoxometalate Ionic Liquids:  Novel, Organic−Inorganic Hybrid Materials

Paul G. Rickert, Mark R. Antonio, Millicent A. Firestone, Karrie-Ann Kubatko, Tomasz Szreder, James F. Wishart, and Mark L. Dietz
pp 4685–4692
Publication Date (Web): May 3, 2007 (Article)
DOI: 10.1021/jp0671751

Electrodeposition of Al in 1-Butyl-1-methylpyrrolidinium Bis(trifluoromethylsulfonyl)amide and 1-Ethyl-3-methylimidazolium Bis(trifluoromethylsulfonyl)amide Ionic Liquids:  In Situ STM and EQCM Studies

E. M. Moustafa, S. Zein El Abedin, A. Shkurankov, E. Zschippang, A. Y. Saad, A. Bund, and F. Endres
pp 4693–4704
Publication Date (Web): March 14, 2007 (Article)
DOI: 10.1021/jp0670687

On the Response of an Ionic Liquid to External Perturbations and the Calculation of Shear Viscosity

Zhonghan Hu and Claudio J. Margulis
pp 4705–4714
Publication Date (Web): January 19, 2007 (Article)
DOI: 10.1021/jp067076n

Surface Orientation of 1-Methyl-, 1-Ethyl-, and 1-Butyl-3-methylimidazolium Methyl Sulfate as Probed by Sum-Frequency Generation Vibrational Spectroscopy

Cherry S. Santos and Steven Baldelli
pp 4715–4723
Publication Date (Web): January 4, 2007 (Article)
DOI: 10.1021/jp067056l

Solute Rotation and Solvation Dynamics in an Alcohol-Functionalized Room Temperature Ionic Liquid

Aniruddha Paul and Anunay Samanta
pp 4724–4731
Publication Date (Web): January 6, 2007 (Article)
DOI: 10.1021/jp065790z

Separation of Benzene and Hexane by Solvent Extraction with 1-Alkyl-3-methylimidazolium Bis{(trifluoromethyl)sulfonyl}amide Ionic Liquids:  Effect of the Alkyl-Substituent Length

Alberto Arce, Martyn J. Earle, Héctor Rodríguez, and Kenneth R. Seddon
pp 4732–4736
Publication Date (Web): January 30, 2007 (Article)
DOI: 10.1021/jp066377u

Salting-Out Effects in Aqueous Ionic Liquid Solutions:  Cloud-Point Temperature Shifts

Joana R. Trindade, Zoran P. Visak, Marijana Blesic, Isabel M. Marrucho, João A. P. Coutinho, José N. Canongia Lopes, and Luis P. N. Rebelo
pp 4737–4741
Publication Date (Web): January 27, 2007 (Article)
DOI: 10.1021/jp067022d

Ionic Liquids Based on Dicyanamide Anion:  Influence of Structural Variations in Cationic Structures on Ionic Conductivity

Yukihiro Yoshida, Osamu Baba, and Gunzi Saito
pp 4742–4749
Publication Date (Web): January 18, 2007 (Article)
DOI: 10.1021/jp067055t

Difference in Lower Critical Solution Temperature Behavior between Random Copolymers and a Homopolymer Having Solvatophilic and Solvatophobic Structures in an Ionic Liquid

Takeshi Ueki, Takeshi Karino, Yosuke Kobayashi, Mitsuhiro Shibayama, and Masayoshi Watanabe
pp 4750–4754
Publication Date (Web): February 24, 2007 (Article)
DOI: 10.1021/jp0670900

Electrostatic Interactions of a Neutral Dipolar Solute with a Fused Salt:  A New Model for Solvation in Ionic Liquids

Mark N. Kobrak
pp 4755–4762
Publication Date (Web): February 14, 2007 (Article)
DOI: 10.1021/jp066112f

Dye-Sensitized TiO2 Solar Cells Using Imidazolium-Type Ionic Liquid Crystal Systems as Effective Electrolytes

Noriyo Yamanaka, Ryuji Kawano, Wataru Kubo, Naruhiko Masaki, Takayuki Kitamura, Yuji Wada, Masayoshi Watanabe, and Shozo Yanagida
pp 4763–4769
Publication Date (Web): January 4, 2007 (Article)
DOI: 10.1021/jp0671446

Electron Photodetachment from Iodide in Ionic Liquids through Charge-Transfer-to-Solvent Band Excitation

Ryuzi Katoh, Yoichi Yoshida, Yosuke Katsumura, and Kenji Takahashi
pp 4770–4774
Publication Date (Web): January 11, 2007 (Article)
DOI: 10.1021/jp067107e

The Dielectric Response of Room-Temperature Ionic Liquids:  Effect of Cation Variation

Hermann Weingärtner, Padmanabhan Sasisanker, Corinne Daguenet, Paul J. Dyson, Ingo Krossing, John M. Slattery, and Thomas Schubert
pp 4775–4780
Publication Date (Web): February 6, 2007 (Article)
DOI: 10.1021/jp0671188

Dynamics of Solvent and Rotational Relaxation of Coumarin-153 in Room-Temperature Ionic Liquid 1-Butyl-3-methyl Imidazolium Tetrafluoroborate Confined in Poly(oxyethylene glycol) Ethers Containing Micelles

Debabrata Seth, Anjan Chakraborty, Palash Setua, and Nilmoni Sarkar
pp 4781–4787
Publication Date (Web): April 7, 2007 (Article)
DOI: 10.1021/jp067122j

Accurate Thermochemical Properties for Energetic Materials Applications. II. Heats of Formation of Imidazolium-, 1,2,4-Triazolium-, and Tetrazolium-Based Energetic Salts from Isodesmic and Lattice Energy Calculations

Keith E. Gutowski, Robin D. Rogers, and David A. Dixon
pp 4788–4800
Publication Date (Web): March 1, 2007 (Article)
DOI: 10.1021/jp066420d

Temperature-Dependent Electronic and Vibrational Structure of the 1-Ethyl-3-methylimidazolium Bis(trifluoromethylsulfonyl)amide Room-Temperature Ionic Liquid Surface:  A Study with XPS, UPS, MIES, and HREELS

S. Krischok, M. Eremtchenko, M. Himmerlich, P. Lorenz, J. Uhlig, A. Neumann, R. Öttking, W. J. D. Beenken, O. Höfft, S. Bahr, V. Kempter, and J. A. Schaefer
pp 4801–4806
Publication Date (Web): May 3, 2007 (Article)
DOI: 10.1021/jp067136p

Reaction between Diiodide Anion Radicals in Ionic Liquids

Kenji Takahashi, Shingo Sakai, Hiroaki Tezuka, and Yusuke HiejimaYosuke KatsumuraMasayoshi Watanabe
pp 4807–4811
Publication Date (Web): February 1, 2007 (Article)
DOI: 10.1021/jp0671087

Molecular Dynamics Simulation of Nanostructural Organization in Ionic Liquid/Water Mixtures

Wei Jiang, Yanting Wang, and Gregory A. Voth
pp 4812–4818
Publication Date (Web): February 27, 2007 (Article)
DOI: 10.1021/jp067142l

Intermolecular Interactions and Dynamics of Room Temperature Ionic Liquids That Have Silyl- and Siloxy-Substituted Imidazolium Cations

Hideaki Shirota, James F. Wishart, and Edward W. Castner Jr.
pp 4819–4829
Publication Date (Web): April 7, 2007 (Article)
DOI: 10.1021/jp067126o

Ultrafast Dynamics of Room Temperature Ionic Liquids after Ultraviolet Femtosecond Excitation

H. Brands, N. Chandrasekhar, and A.-N. Unterreiner
pp 4830–4836
Publication Date (Web): February 2, 2007 (Article)
DOI: 10.1021/jp067163f

Characterization of the Ability of CO2 To Act as an Antisolvent for Ionic Liquid/Organic Mixtures

Berlyn R. Mellein and Joan F. Brennecke
pp 4837–4843
Publication Date (Web): February 21, 2007 (Article)
DOI: 10.1021/jp0671695

Why Does a Reduction in Hydrogen Bonding Lead to an Increase in Viscosity for the 1-Butyl-2,3-dimethyl-imidazolium-Based Ionic Liquids?

Patricia A. Hunt
pp 4844–4853
Publication Date (Web): March 23, 2007 (Article)
DOI: 10.1021/jp067182p

Terahertz Time-Domain Spectroscopy of Imidazolium Ionic Liquids

Kohji Yamamoto, Masahiko Tani, and Masanori Hangyo
pp 4854–4859
Publication Date (Web): April 10, 2007 (Article)
DOI: 10.1021/jp067171w

Local Structure at the Air/Liquid Interface of Room-Temperature Ionic Liquids Probed by Infrared−Visible Sum Frequency Generation Vibrational Spectroscopy:  1-Alkyl-3-methylimidazolium Tetrafluoroborates

Toshifumi Iimori, Takashi Iwahashi, Kaname Kanai, Kazuhiko Seki, Jaeho Sung, Doseok Kim, Hiro-o Hamaguchi, and Yukio Ouchi
pp 4860–4866
Publication Date (Web): April 12, 2007 (Article)
DOI: 10.1021/jp067162n

Effect of Temperature and Water Content on the Shear Viscosity of the Ionic Liquid 1-Ethyl-3-methylimidazolium Bis(trifluoromethanesulfonyl)imide As Studied by Atomistic Simulations

Manish S. Kelkar and Edward J. Maginn
pp 4867–4876
Publication Date (Web): April 5, 2007 (Article)
DOI: 10.1021/jp0686893

Polarization Relaxation in an Ionic Liquid Confined between Electrified Walls

Carlos Pinilla, M. G. Del Pópolo, Jorge Kohanoff, and R. M. Lynden-Bell
pp 4877–4884
Publication Date (Web): February 13, 2007 (Article)
DOI: 10.1021/jp067184+

Nuclear Magnetic Resonance Study of the Dynamics of Imidazolium Ionic Liquids with −CH2Si(CH3)3 vs −CH2C(CH3)3 Substituents

Song H. Chung, Richard Lopato, Steven G. Greenbaum, Hideaki Shirota, Edward W. CastnerJr., and James F. Wishart
pp 4885–4893
Publication Date (Web): April 19, 2007 (Article)
DOI: 10.1021/jp071755w

Melting and Freezing Behaviors of Prototype Ionic Liquids, 1-Butyl-3-methylimidazolium Bromide and Its Chloride, Studied by Using a Nano-Watt Differential Scanning Calorimeter

Keiko Nishikawa, Shaolan Wang, Hideki Katayanagi, Satoshi Hayashi, Hiro-o Hamaguchi, Yoshikata Koga, and Ken-ichi Tozaki
pp 4894–4900
Publication Date (Web): February 27, 2007 (Article)
DOI: 10.1021/jp0671852

Vibrational Spectroscopy and Dynamics of Azide Ion in Ionic Liquid and Dimethyl Sulfoxide Water Mixtures

Gerald M. Sando, Kevin Dahl, and Jeffrey C. Owrutsky
pp 4901–4909
Publication Date (Web): February 28, 2007 (Article)
DOI: 10.1021/jp067143d

Application of Hole Theory to Define Ionic Liquids by their Transport Properties

Andrew P. Abbott, Robert C. Harris, and Karl S. Ryder
pp 4910–4913
Publication Date (Web): March 10, 2007 (Article)
DOI: 10.1021/jp0671998

Picosecond Time-Resolved Fluorescence Study on Solute−Solvent Interaction of 2-Aminoquinoline in Room-Temperature Ionic Liquids:  Aromaticity of Imidazolium-Based Ionic Liquids

Koichi Iwata, Minoru Kakita, and Hiro-o Hamaguchi
pp 4914–4919
Publication Date (Web): April 12, 2007 (Article)
DOI: 10.1021/jp067196v

Effects of Solute Electronic Polarizability on Solvation in a Room-Temperature Ionic Liquid

Daun Jeong, Youngseon Shim, M. Y. Choi, and Hyung J. Kim
pp 4920–4925
Publication Date (Web): January 25, 2007 (Article)
DOI: 10.1021/jp067316z

Protic Ionic Liquids:  Preparation, Characterization, and Proton Free Energy Level Representation

Jean-Philippe Belieres and C. Austen Angell
pp 4926–4937
Publication Date (Web): April 7, 2007 (Article)
DOI: 10.1021/jp067589u

Neutral and Charged 1-Butyl-3-methylimidazolium Triflate Clusters:  Equilibrium Concentration in the Vapor Phase and Thermal Properties of Nanometric Droplets

P. Ballone, C. Pinilla, J. Kohanoff, and M. G. Del Pópolo
pp 4938–4950
Publication Date (Web): February 27, 2007 (Article)
DOI: 10.1021/jp067484r

Rhodium-Catalyzed Hydroformylation of 1-Hexene in an Ionic Liquid:  A Molecular Dynamics Study of the Hexene/[BMI][PF6] Interface

Nicolas Sieffert and Georges Wipff
pp 4951–4962
Publication Date (Web): March 3, 2007 (Article)
DOI: 10.1021/jp0677952

Fluorescence Probing of Temperature-Dependent Dynamics and Friction in Ionic Liquid Local Environments

Alison M. Funston, Tatiana A. Fadeeva, James F. Wishart, and Edward W. Castner, Jr.
pp 4963–4977
Publication Date (Web): April 18, 2007 (Article)
DOI: 10.1021/jp068298o

Measurements of the Complete Solvation Response in Ionic Liquids

Sergei Arzhantsev, Hui Jin, Gary A. Baker, and Mark Maroncelli
pp 4978–4989
Publication Date (Web): February 24, 2007 (Article)
DOI: 10.1021/jp067273m

Structure and Orientation of the Imidazolium Cation at the Room-Temperature Ionic Liquid/SiO2 Interface Measured by Sum-Frequency Vibrational Spectroscopy

Julie B. Rollins, Brian D. Fitchett, and John C. Conboy
pp 4990–4999
Publication Date (Web): April 19, 2007 (Article)
DOI: 10.1021/jp0671906

An Electrochemical Study of the Oxidation of Hydrogen at Platinum Electrodes in Several Room Temperature Ionic Liquids

Debbie S. Silvester, Leigh Aldous, Christopher Hardacre, and Richard G. Compton
pp 5000–5007
Publication Date (Web): February 7, 2007 (Article)
DOI: 10.1021/jp067236v

Correlation between Quasielastic Raman Scattering and Configurational Entropy in an Ionic Liquid

Mauro C. C. Ribeiro
pp 5008–5015
Publication Date (Web): September 30, 2006 (Article)
DOI: 10.1021/jp063810r

Solvation Dynamics and Electric Field Relaxation in an Imidazolium-PF6 Ionic Liquid:  from Room Temperature to the Glass Transition

Naoki Ito and Ranko Richert
pp 5016–5022
Publication Date (Web): October 4, 2006 (Article)
DOI: 10.1021/jp0640023

Photoinduced Electron-Transfer Reactions in Two Room-Temperature Ionic Liquids:  1-Butyl-3-methylimidazolium Hexafluorophosphate and 1-Octyl-3-methylimidazolium Hexafluorophosphate

Rebecca C. Vieira and Daniel E. Falvey
pp 5023–5029
Publication Date (Web): January 13, 2007 (Article)
DOI: 10.1021/jp0630471
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