Ionic liquid crystals

Synthesis, structure and applications to I 2-free solid-state dye-sensitized solar cells

Won Seok Chi, Harim Jeon, Sang Jin Kim, Dong Jun Kim, Jong Hak Kim

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

A novel type of ionic liquid crystal (ILC) was synthesized and used as a solid electrolyte in I2-free solidstate dye-sensitized solar cells (ssDSSCs). In particular, the properties of two ILCs, 1-[(4-ethenylphenyl) methyl]-3-butyl-imidazolium iodide (EBII) with a single aliphatic C=C bond and 1-[(4-ethenylphenyl)methyl]-3-vinyl-imidazolium iodide (EVII) with two aliphatic C=C bonds, were evaluated. The structures and morphologies of the ILCs were characterized using Fourier transform infrared spectroscopy (FTIR) and polarized optical microscopy (POM). Ultraviolet (UV)-visible spectroscopy, X-ray diffraction (XRD), and differential scanning calorimetry (DSC) analyses revealed that EBII exhibited weaker π-π stacking interactions, longer d-spacing, and a lower melting temperature. The energy conversion efficiency of I 2-free ssDSSC with EBII (4.7% at 100 mW/cm2) was higher than with EVII (3.8%) due to facile charge transport and lower electron recombination in the former, as supported by electrochemical impedance spectroscopy (EIS).

Original languageEnglish
Pages (from-to)315-320
Number of pages6
JournalMacromolecular Research
Volume21
Issue number3
DOIs
Publication statusPublished - 2013 Mar 1

Fingerprint

Ionic Liquids
Liquid Crystals
Iodides
Ionic liquids
Liquid crystals
Ultraviolet visible spectroscopy
Solid electrolytes
Electrochemical impedance spectroscopy
Energy conversion
Conversion efficiency
Optical microscopy
Fourier transform infrared spectroscopy
Melting point
Charge transfer
Differential scanning calorimetry
X ray diffraction
Electrons
Dye-sensitized solar cells

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

Cite this

Chi, Won Seok ; Jeon, Harim ; Kim, Sang Jin ; Kim, Dong Jun ; Kim, Jong Hak. / Ionic liquid crystals : Synthesis, structure and applications to I 2-free solid-state dye-sensitized solar cells. In: Macromolecular Research. 2013 ; Vol. 21, No. 3. pp. 315-320.
@article{20b0b1cfe36e4c2da11c285b104948b7,
title = "Ionic liquid crystals: Synthesis, structure and applications to I 2-free solid-state dye-sensitized solar cells",
abstract = "A novel type of ionic liquid crystal (ILC) was synthesized and used as a solid electrolyte in I2-free solidstate dye-sensitized solar cells (ssDSSCs). In particular, the properties of two ILCs, 1-[(4-ethenylphenyl) methyl]-3-butyl-imidazolium iodide (EBII) with a single aliphatic C=C bond and 1-[(4-ethenylphenyl)methyl]-3-vinyl-imidazolium iodide (EVII) with two aliphatic C=C bonds, were evaluated. The structures and morphologies of the ILCs were characterized using Fourier transform infrared spectroscopy (FTIR) and polarized optical microscopy (POM). Ultraviolet (UV)-visible spectroscopy, X-ray diffraction (XRD), and differential scanning calorimetry (DSC) analyses revealed that EBII exhibited weaker π-π stacking interactions, longer d-spacing, and a lower melting temperature. The energy conversion efficiency of I 2-free ssDSSC with EBII (4.7{\%} at 100 mW/cm2) was higher than with EVII (3.8{\%}) due to facile charge transport and lower electron recombination in the former, as supported by electrochemical impedance spectroscopy (EIS).",
author = "Chi, {Won Seok} and Harim Jeon and Kim, {Sang Jin} and Kim, {Dong Jun} and Kim, {Jong Hak}",
year = "2013",
month = "3",
day = "1",
doi = "10.1007/s13233-013-1097-3",
language = "English",
volume = "21",
pages = "315--320",
journal = "Macromolecular Research",
issn = "1598-5032",
publisher = "Polymer Society of Korea",
number = "3",

}

Ionic liquid crystals : Synthesis, structure and applications to I 2-free solid-state dye-sensitized solar cells. / Chi, Won Seok; Jeon, Harim; Kim, Sang Jin; Kim, Dong Jun; Kim, Jong Hak.

In: Macromolecular Research, Vol. 21, No. 3, 01.03.2013, p. 315-320.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Ionic liquid crystals

T2 - Synthesis, structure and applications to I 2-free solid-state dye-sensitized solar cells

AU - Chi, Won Seok

AU - Jeon, Harim

AU - Kim, Sang Jin

AU - Kim, Dong Jun

AU - Kim, Jong Hak

PY - 2013/3/1

Y1 - 2013/3/1

N2 - A novel type of ionic liquid crystal (ILC) was synthesized and used as a solid electrolyte in I2-free solidstate dye-sensitized solar cells (ssDSSCs). In particular, the properties of two ILCs, 1-[(4-ethenylphenyl) methyl]-3-butyl-imidazolium iodide (EBII) with a single aliphatic C=C bond and 1-[(4-ethenylphenyl)methyl]-3-vinyl-imidazolium iodide (EVII) with two aliphatic C=C bonds, were evaluated. The structures and morphologies of the ILCs were characterized using Fourier transform infrared spectroscopy (FTIR) and polarized optical microscopy (POM). Ultraviolet (UV)-visible spectroscopy, X-ray diffraction (XRD), and differential scanning calorimetry (DSC) analyses revealed that EBII exhibited weaker π-π stacking interactions, longer d-spacing, and a lower melting temperature. The energy conversion efficiency of I 2-free ssDSSC with EBII (4.7% at 100 mW/cm2) was higher than with EVII (3.8%) due to facile charge transport and lower electron recombination in the former, as supported by electrochemical impedance spectroscopy (EIS).

AB - A novel type of ionic liquid crystal (ILC) was synthesized and used as a solid electrolyte in I2-free solidstate dye-sensitized solar cells (ssDSSCs). In particular, the properties of two ILCs, 1-[(4-ethenylphenyl) methyl]-3-butyl-imidazolium iodide (EBII) with a single aliphatic C=C bond and 1-[(4-ethenylphenyl)methyl]-3-vinyl-imidazolium iodide (EVII) with two aliphatic C=C bonds, were evaluated. The structures and morphologies of the ILCs were characterized using Fourier transform infrared spectroscopy (FTIR) and polarized optical microscopy (POM). Ultraviolet (UV)-visible spectroscopy, X-ray diffraction (XRD), and differential scanning calorimetry (DSC) analyses revealed that EBII exhibited weaker π-π stacking interactions, longer d-spacing, and a lower melting temperature. The energy conversion efficiency of I 2-free ssDSSC with EBII (4.7% at 100 mW/cm2) was higher than with EVII (3.8%) due to facile charge transport and lower electron recombination in the former, as supported by electrochemical impedance spectroscopy (EIS).

UR - http://www.scopus.com/inward/record.url?scp=84877798351&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84877798351&partnerID=8YFLogxK

U2 - 10.1007/s13233-013-1097-3

DO - 10.1007/s13233-013-1097-3

M3 - Article

VL - 21

SP - 315

EP - 320

JO - Macromolecular Research

JF - Macromolecular Research

SN - 1598-5032

IS - 3

ER -