Molecular dynamics of coil-rod-coil molecules depending on their concentrations in polar or non-polar solvent: Intra- and intermolecular interactions and charge transfer emissions

In Wook Hwang, Hyo Hwi Choi, Byoung Ki Cho, Myongsoo Lee, Yong Rok Kim

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Concentration-dependent molecular dynamics of long coil-rod-coil molecules at the concentrations of 1×10-6 M ~1×10-4 M in polar or non-polar solvent were investigated by steady-state excitation, fluorescence, and picosecond time-resolved fluorescence spectroscopies. The fluorescence spectra of the molecules reveal both characteristics of local excited-state emission and strong intramolecular charge-transfer (ICT) emission. The steady-state excitation spectra and the picosecond time-resolved fluorescence decay profiles in the concentrations of 5×10-5 M and 1×10-4 M ascertain hydrophobic rod-to-rod interaction (J-aggregation) in methanol solution. The hydrophilic intermolecular interactions (amorphous aggregation) in n-hexane are also discussed.

Original languageEnglish
Pages (from-to)219-224
Number of pages6
JournalChemical Physics Letters
Volume325
Issue number1-3
DOIs
Publication statusPublished - 2000 Jul 21

Fingerprint

Molecular dynamics
Charge transfer
coils
rods
Fluorescence
charge transfer
molecular dynamics
fluorescence
Molecules
Agglomeration
molecules
Fluorescence spectroscopy
interactions
excitation
Excited states
Methanol
methyl alcohol
decay
profiles
spectroscopy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

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abstract = "Concentration-dependent molecular dynamics of long coil-rod-coil molecules at the concentrations of 1×10-6 M ~1×10-4 M in polar or non-polar solvent were investigated by steady-state excitation, fluorescence, and picosecond time-resolved fluorescence spectroscopies. The fluorescence spectra of the molecules reveal both characteristics of local excited-state emission and strong intramolecular charge-transfer (ICT) emission. The steady-state excitation spectra and the picosecond time-resolved fluorescence decay profiles in the concentrations of 5×10-5 M and 1×10-4 M ascertain hydrophobic rod-to-rod interaction (J-aggregation) in methanol solution. The hydrophilic intermolecular interactions (amorphous aggregation) in n-hexane are also discussed.",
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Molecular dynamics of coil-rod-coil molecules depending on their concentrations in polar or non-polar solvent : Intra- and intermolecular interactions and charge transfer emissions. / Hwang, In Wook; Choi, Hyo Hwi; Cho, Byoung Ki; Lee, Myongsoo; Kim, Yong Rok.

In: Chemical Physics Letters, Vol. 325, No. 1-3, 21.07.2000, p. 219-224.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Molecular dynamics of coil-rod-coil molecules depending on their concentrations in polar or non-polar solvent

T2 - Intra- and intermolecular interactions and charge transfer emissions

AU - Hwang, In Wook

AU - Choi, Hyo Hwi

AU - Cho, Byoung Ki

AU - Lee, Myongsoo

AU - Kim, Yong Rok

PY - 2000/7/21

Y1 - 2000/7/21

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AB - Concentration-dependent molecular dynamics of long coil-rod-coil molecules at the concentrations of 1×10-6 M ~1×10-4 M in polar or non-polar solvent were investigated by steady-state excitation, fluorescence, and picosecond time-resolved fluorescence spectroscopies. The fluorescence spectra of the molecules reveal both characteristics of local excited-state emission and strong intramolecular charge-transfer (ICT) emission. The steady-state excitation spectra and the picosecond time-resolved fluorescence decay profiles in the concentrations of 5×10-5 M and 1×10-4 M ascertain hydrophobic rod-to-rod interaction (J-aggregation) in methanol solution. The hydrophilic intermolecular interactions (amorphous aggregation) in n-hexane are also discussed.

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