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Ishimatsu R, Tashiro S, Kasahara T, Oshima J, Mizuno J, Nakano K, Adachi C, Imato T. Kinetics of Excimer Electrogenerated Chemiluminescence of Pyrene and 1-Pyrenebutyricacid 2-Ethylhexylester in Acetonitrile and an Ionic Liquid, Triethylpentylphosphonium Bis(trifluoromethanesulfonyl)imide. J Phys Chem B 2019; 123:10825-10836. [PMID: 31804083 DOI: 10.1021/acs.jpcb.9b08813] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We describe the kinetics of excimer electrogenerated chemiluminescence (ECL) of a liquid pyrene derivative, 1-pyrenebutyricacid 2-ethylhexylester (PLQ) dissolved in a molecular solvent, acetonitrile (MeCN), and an ionic liquid, triethylpentylphosphonium bis(trifluoromethanesulfonyl)imide ([P2225][TFSI]). Pyrene was also used for comparison. To discuss the kinetics of the excimer ECLs, the photophysical and electrochemical properties and electronic states of PLQ and pyrene were revealed. The photoluminescence (PL) spectra, rate constants for the radiative transitions, and redox potentials of PLQ and pyrene dissolved in MeCN and [P2225][TFSI] suggest that as a solvent, [P2225][TFSI] behaves more polar than MeCN. By analyzing the PL decay curves, the rate constants to form the excimer were determined to be on the order of 109 and 107 M-1 s-1 in MeCN and [P2225][TFSI], respectively, which were limited by the diffusion. For neat PLQ (1.6 M), a delay of 0.3-0.4 ns for the excimer emission compared to the monomer emission was observed. It is likely that the delay corresponds to the timescale for arranging the conformation to form the excimer. The ECL of PLQ was generated by applying a square wave voltage to produce the radical anion and cation, and on the ECL spectra, the excimer emission was more prevailed compared to the PL spectra. Kinetic analysis for the electron transfer reaction between the radical ions based on Marcus theory indicates that the electron transfer is limited by the diffusion of the radical ions. Moreover, the electron transfer distance (det) between the radical cation and anion to generate excited states was calculated with a framework of the theory. Kinetically, the electron transfer can take place at det < ∼11 Å in MeCN and det < ∼12 Å in [P2225][TFSI]. The density functional theory (DFT) and time-dependent DFT calculations show that the potential energy curve of the excimer against the distance between the pyrene rings reaches a minimum at 3.50 Å. This suggests that through the electron transfer, the process of the direct formation of the monomer S1 state followed by the excimer formation is more prevailed than that of the direct excimer formation.
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Affiliation(s)
- Ryoichi Ishimatsu
- Department of Applied Chemistry, Graduate School of Engineering , Kyushu University , 744 Motooka , Nishi-ku, Fukuoka 819-0395 , Japan
| | - Shuya Tashiro
- Department of Applied Chemistry, Graduate School of Engineering , Kyushu University , 744 Motooka , Nishi-ku, Fukuoka 819-0395 , Japan
| | - Takashi Kasahara
- Department of Electrical and Electronic Engineering, Faculty of Science and Engineering , Hosei University , 3-7-2 Kajino-cho , Koganei , Tokyo 184-8584 , Japan
| | - Juro Oshima
- Frontier Materials Research Department, Materials Research Laboratories , Nissan Chemical Corporation , 488-6 Suzumi-cho , Funabashi , Chiba 274-0052 , Japan
| | - Jun Mizuno
- Research Organization for Nano and Life Innovation , Waseda University , 513 Wasedatsurumaki-cho , Shinjuku-ku, Tokyo 162-0041 , Japan
| | - Koji Nakano
- Department of Applied Chemistry, Graduate School of Engineering , Kyushu University , 744 Motooka , Nishi-ku, Fukuoka 819-0395 , Japan
| | - Chihaya Adachi
- Department of Applied Chemistry, Graduate School of Engineering , Kyushu University , 744 Motooka , Nishi-ku, Fukuoka 819-0395 , Japan
| | - Toshihiko Imato
- Department of Applied Chemistry, Graduate School of Engineering , Kyushu University , 744 Motooka , Nishi-ku, Fukuoka 819-0395 , Japan
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Lee HJ, Arrigan DWM, Karim MN, Kim H. Amperometric Ion Sensing Approaches at Liquid/Liquid Interfaces for Inorganic, Organic and Biological Ions. ELECTROCHEMICAL STRATEGIES IN DETECTION SCIENCE 2015. [DOI: 10.1039/9781782622529-00296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Electrochemistry at the interface between two immiscible electrolyte solutions (ITIES) has become an invaluable tool for the selective and sensitive detection of cationic and anionic species, including charged drug molecules and proteins. In addition, neutral molecules can also be detected at the ITIES via enzymatic reactions. This chapter highlights recent developments towards creating a wide spectrum of sensing platforms involving ion transfer across the ITIES. As well as outlining the basic principles needed for performing these sensing applications, the development of ITIES-based detection strategies for inorganic, organic, and biological ions is discussed.
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Affiliation(s)
- Hye Jin Lee
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University 80 Daehakro, Buk-gu Daegu-city 702-701 Republic of Korea
| | - Damien W. M. Arrigan
- Nanochemistry Research Institute, Department of Chemistry, Curtin University GPO Box U1987 Perth, Western Australia 6845 Australia
| | - Md. Nurul Karim
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University 80 Daehakro, Buk-gu Daegu-city 702-701 Republic of Korea
| | - Hyerim Kim
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University 80 Daehakro, Buk-gu Daegu-city 702-701 Republic of Korea
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Gan S, Zhou M, Zhang J, Zhong L, Ulstrup J, Niu L. Ion Transfer Voltammetry Associated with Two Polarizable Interfaces Within Water and Moderately Hydrophobic Ionic Liquid Systems. ELECTROANAL 2012. [DOI: 10.1002/elan.201200123] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Ishimatsu R, Kitazumi Y, Nishi N, Kakiuchi T. Phase Transition of a Binary Room-Temperature Ionic Liquid Composed of Bis(pentafluoroethanesulfonyl)amide Salts of Tetraheptylammonium and N-Tetradecylisoquinolinium and Its Surface Properties at the Ionic Liquid|Water Interface. J Phys Chem B 2009; 113:9321-5. [DOI: 10.1021/jp9027035] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ryoichi Ishimatsu
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Yuki Kitazumi
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Naoya Nishi
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Takashi Kakiuchi
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
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Nishi N, Suzuki A, Kakiuchi T. Hydrophobic Ionic Liquids Composed of Perfluoroalkyltrifluoroborates for Ionic Liquid–Water Two-Phase Systems. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2009. [DOI: 10.1246/bcsj.82.86] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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NISHI N, MURAKAMI H, YASUI Y, KAKIUCHI T. Use of Highly Hydrophobic Ionic Liquids for Ion-selective Electrodes of the Liquid Membrane Type. ANAL SCI 2008; 24:1315-20. [DOI: 10.2116/analsci.24.1315] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Naoya NISHI
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University
| | - Hiroshi MURAKAMI
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University
| | - Yukinori YASUI
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University
| | - Takashi KAKIUCHI
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University
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Ballantyne AD, Brisdon AK, Dryfe RAW. Immiscible electrolyte systems based on asymmetric hydrophobic room temperature ionic liquids. Chem Commun (Camb) 2008:4980-2. [DOI: 10.1039/b809148j] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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KAKIUCHI T. Mutual Solubility of Hydrophobic Ionic Liquids and Water in Liquid-Liquid Two-phase Systems for Analytical Chemistry. ANAL SCI 2008; 24:1221-30. [DOI: 10.2116/analsci.24.1221] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Takashi KAKIUCHI
- Department of Energy and Hydrocarbon Chemistry, Kyoto University
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