​

(22)  H. Akamatsu, S. Kubo, S. Kikuchi, Y. Tsuchida, K. Tsunashima,* H. Hotta, A. Yokobiki, Y. Funasako, Y. Okuno, A. Hamada,

         H. Yamada, A. Tani*, "Dependence of Carboxylate Anions on Physicochemical Properties of Tributyloctylphosphonium-Based

         Ionic Liquids", ECS Transactions, 114, (6), 89-95 (2024).  

 

(21)  S. Kikuchi, K. Nishikawa, T. Kawaji,* K. Tsunashima,* H. Hotta, A. Yokobiki, Y. Tsuchida, Y. Funasako, H. Yamada,

       "Physicochemical and Thermal Behaviors of Room-Temperature Phosphonium Ionic Liquids Based on Fluorosulfonyl(trifluoro-

        methylsulfonyl)Amide Anion As Potential Electrolytes", ECS Transactions, 114, (6), 81-88 (2024).  

 

(20)  K. Kawabata, S. Azuma, J. Shimada, Y. Tsuchida, K. Tsunashima,* T. Sugahara,* A. Tani, "Introduction of Cyclic Structures into

        Phosphonium Salts As Potential Guest Substances for Ionic Clathrate Hydrates", ECS Transactions, 114, (6), 75-79 (2024).  

 

(19)  K. Tsunashima,* S. Hasegawa, Y. Okuno, H. Yamada, "Physicochemical Characterization of Sulfonate-Based Phosphonium

        Ionic Liquids", ECS Transactions, 109, (14), 23-27 (2022).  

 

(18)  J. Shimada, M. Yamada, T. Sugahara,* A. Tani, K. Tsunashima, T. Hirai, "Thermodynamic properties of

       tetra-n-butylphosphonium dicarboxylate semiclathrate hydrates ", Proceedings of 9th International Symposium on

       Molecular Thermodynamics and Molecular Simulation, PA03 (2021).  

 

(17)  Y. Tsuchida, D. Nomizu, K. Tsunashima*, H. Yamada, M. Matsumiya, "Effect of Phosphonium Ionic Liquids on Thermal

       Stability of Polymethyl Methacrylate Polymers", Proceedings of 8th International Symposium on Molecular Thermodynamics

      and Molecular Simulation, pp36 (2018).  

 

(16)  Y. Tsuchida, M. Matsumiya,* K. Tsunashima, "Solvation structure and thermodynamics for lanthanide complexes in

       ionic liquids evaluated by ADF and MD simulations", Proceedings of 8th International Symposium on Molecular

      Thermodynamics and Molecular Simulation, pp34 (2018).  

 

(15)  T. Makino,* K. Tsunashima, M. Kanakubo,* "CO2 Absorption and Physical Properties of Tributyloctylphosphonium

       Benzotriazolate", Proceedings of 8th International Symposium on Molecular Thermodynamics and Molecular Simulation,

       pp32 (2018).  

 

(14)  M. Shimada, J. Shimada, T. Sugahara, K. Tsunashima,* "Thermodynamic Stabilities of Tetra-n-butylphosphonium + Gas

       Semiclathrate Hydrate Systems", Proceedings of 8th International Symposium on Molecular Thermodynamics and

       Molecular Simulation, pp13 (2018).  

 

(13)  J. Shimada, M. Shimada, T. Sugahara, K. Tsunashima,* "Phase Equilibrium Relations of Semiclathrate Hydrates Based on

       Tetra-n-butylphosphonium Formate, Acetate, Propionate and Lactate", Proceedings of 8th International Symposium on

       Molecular Thermodynamics and Molecular Simulation, pp11 (2018).  

 

(12)  H. Kanematsu,* A. Oizumi, T. Sato, T. Kamijo, S. honma, D.M. Barry, N. Hirai, A. Ogawa, T. Kogo, D. Kuroda, K. Tsunashima,

       "Polymer Brush Made By Ionic Liquids and the Inhibition Effects for Biofilm Formation",

        ECS Transactions, 85, (13), 1089-1095 (2018).  

​

(11)  H. Kanematsu,* T. Saito, D.M. Barry, N. Hirai, T. Kogo, A. Ogawa, K. Tsunashima, "Effects of Ionic Liquids on Biofilm Formation

       in a Loop-Type Laboratory Biofilm Reactor", ECS Transactions, 80, (10), 1147-1155 (2017).  

​

(10)  J. Shimada, K. Tsunashima,* M. Ue, K. Iwasaki, T. Tsuda, S. Kuwabata, H. Kanematsu, N. Hirai, T. Kogo, A. Ogawa,

       "Physical and Electrochemical Properties of Ionic Liquids Based on Quaternary Phosphonium Cations and Carboxylate Anions

        As Electrolytes", ECS Transactions, 75, (52), 105-111 (2017).  

​

(9)  K. Nishihata, K. Tsunashima,* Y. Ono, M. Matsumiya, "Electropolymerization of Thiophene in a Bis(fluorosulfonyl)amide Based

      Phosphonium Ionic Liquid",  ECS Transactions, 75, (52), 99-103 (2017).            

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(8)  A. Nishimura, M. Matsumiya,* K. Tsunashima, "Ionic conduction mechanism analysis for neodymium complex in phosphonium

      ionic liquids and potassium bis(trifluoromethyl-sulfonyl)amide melts", ECS Transactions, 75, (15), 275-285 (2016).        

​

(7)  K. Nishihata, K. Tsunashima,* M. Matsumiya, "Physicochemical and Electrochemical Properties of Room-Temperature Ionic

      Liquids Based on Quaternary Phosphonium Cations and Tetracyanoborate Anion", ECS Transactions, 72, (33), 9-15 (2016).            

​

(6)  K. Tsunashima,* Y. Sakai, M. Matsumiya, "Physical and Electrochemical Properties of Room-Temperature Ionic Liquids Containing

      Allyl-Based Phosphonium Cations and Bis(fluorosulfonyl)amide Anion", ECS Transactions, 66, (27), 33-39 (2015).  

​

(5)  K. Tsunashima,* C. Nagai, M. Matsumiya, "Influence of Introducing a Benzyl Group on Physical and Electrochemical Properties

      of Bis(fluorosulfonyl)amide-Based Phosphonium Ionic Liquids", ECS Transactions, 58, (46), 91-97 (2014).

​

(4)  T. Yamauchi,* T. Matsui, T. Nishiyama, K. Tsunashima, N. Tsubokawa, S. Harada, "Development of Micro Hydrogen Gas Sensor

      Utilizing Polymerized Gel with Ionic Liquid as a Solvent", ECS Transactions, 50, (12), 231-236 (2013).        

​

(3)  N. Tsuda, M. Matsumiya,* K. Tsunashima, S. Kodama, "Electrochemical behavior and solvation analysis of rare earth complexes

      in ionic liquids media investigated by SECM and Raman spectroscopy", ECS Transactions, 50, (11), 539-548 (2013).         

​

(2)  H. Kondo, M. Matsumiya,* K. Tsunashima, S. Kodama, "Investigation of oxidation state of the electrodeposited neodymium metal

      related with the water contents of phosphonium ionic liquids", ECS Transactions, 50, (11), 529-538 (2013).        

​

(1)  K. Tsunashima,* H. Taguchi, F. Yonekawa, "Influence of Nonflammable Diluents on Properties of Phosphonium Ionic Liquids as

      Lithium Battery Electrolytes", ECS Transactions, 50, (11), 419-424 (2013).  

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