Photoelectron spectroscopy of 7-azaindole-water cluster anions

Atsushi Nakajima, Y. Negishi, R. Hasumi, K. Kaya

研究成果: Article

6 引用 (Scopus)

抄録

The 7-azaindole (7-AzI) cluster anions and their H2O adducts were generated by electron attachment to the 7-AzI/7-AzI-H2O clusters, and their electronic properties studied with mass spectrometry and photoelectron spectroscopy. In the mass spectra of the 7-AzI cluster anions, (7-AzI)-n, monomer anions were missing due to negative electron affinity (EA), while clusters (n ≥ 2) have positive EA, and those having even n were more abundant than those at odd n. EA increased with cluster size from 0.88 eV at n = 2, and an even-odd alternation in the EA was seen. The even-odd alternation showed that the 7-AzI dimer acts as a unit for cluster formation. In the photoelectron spectrum of (7-AzI)-2 at 266 nm, the second peak was observed 2.4 eV above the first peak; this is attributed to the triplet state of the neutral (7-AzI)2. Depending on the detachment energy, a movable peak, with the detachment of 420-300 nm (2.9-4.1 eV), was additionally observed between the first and the second peaks; this was thought to be caused by a delayed photoemission via an electronic excited state of the (7-AzI)-2 anion.

元の言語English
ページ(範囲)303-307
ページ数5
ジャーナルEuropean Physical Journal D
9
発行部数1-4
出版物ステータスPublished - 1999 12

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photoelectron spectroscopy
anions
electron affinity
water
alternations
detachment
negative electron affinity
electron attachment
electronics
mass spectra
atomic energy levels
adducts
photoelectrons
photoelectric emission
mass spectroscopy
monomers
dimers
spectroscopy
excitation
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Atomic and Molecular Physics, and Optics

これを引用

Photoelectron spectroscopy of 7-azaindole-water cluster anions. / Nakajima, Atsushi; Negishi, Y.; Hasumi, R.; Kaya, K.

:: European Physical Journal D, 巻 9, 番号 1-4, 12.1999, p. 303-307.

研究成果: Article

Nakajima, A, Negishi, Y, Hasumi, R & Kaya, K 1999, 'Photoelectron spectroscopy of 7-azaindole-water cluster anions', European Physical Journal D, 巻. 9, 番号 1-4, pp. 303-307.
Nakajima, Atsushi ; Negishi, Y. ; Hasumi, R. ; Kaya, K. / Photoelectron spectroscopy of 7-azaindole-water cluster anions. :: European Physical Journal D. 1999 ; 巻 9, 番号 1-4. pp. 303-307.
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