Fluorescence spectra of asymmetric diamines having primary and tertiary amino groups

Shunzo Yamamoto, Hidemasa Habara, Yoshimi Sueishi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Broad and asymmetric emission spectra were obtained with some saturated diamines which have a primary and a tertiary amino group in cyclohexane, diethyl ether and tetrahydrofuran. These spectra were resolved into three component bands. The shortest- and longest-wavelength bands were assigned to an excited tertiary amino group moiety and an exciplex formed between the excited tertiary amino group and the ground-state primary amino group. The middle-wavelength band was assigned to an excited primary amino group moiety formed through the exciplex. The enthalpy changes among three emitters were estimated from the temperature dependences of the intensity ratios of the emission bands. The solvent effect on the emission bands and the enthalpy changes are discussed.

Original languageEnglish
Pages (from-to)421-425
Number of pages5
JournalPhysical Chemistry Chemical Physics
Volume1
Issue number3
DOIs
Publication statusPublished - Feb 1 1999

Fingerprint

Diamines
diamines
Enthalpy
Fluorescence
Wavelength
fluorescence
Ether
Ground state
enthalpy
diethyl ether
tetrahydrofuran
wavelengths
cyclohexane
emitters
emission spectra
Temperature
temperature dependence
ground state
Cyclohexane

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Atomic and Molecular Physics, and Optics

Cite this

Fluorescence spectra of asymmetric diamines having primary and tertiary amino groups. / Yamamoto, Shunzo; Habara, Hidemasa; Sueishi, Yoshimi.

In: Physical Chemistry Chemical Physics, Vol. 1, No. 3, 01.02.1999, p. 421-425.

Research output: Contribution to journalArticle

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