UV-visible and inelastic electron tunneling spectroscopies of brevetoxins

J. L. Brousseau, N. Vibet, Roger Leblanc, K. S. Rein, D. G. Baden

Research output: Contribution to journalArticle

Abstract

We have studied the UV-vis and vibrational spectra of the breve-toxins PbTx-2, PbTx-3, PbTx-9, and 2, 3, 27, 28, 41, 43-hexahydro-(reduced) PbTx-3. The absorption at 194 nm (∈ ≈ 18 000 L mol-1 cm-1) of PbTx-2 and PbTx-3 is assigned to the π-π* transition of the lactone conjugated double bonds. The n-π* transition of the lactone is seen at 239 nm (∈ ≈ 2 800 L mol-1 cm-1). The absorption band at 208 nm for PbTx-2 is assigned to the conjugated double bonds of the aldehyde function located on the K-ring side chain. The inelastic electron tunneling spectra of PbTx-2, PbTx-3, PbTx-9, and fully reduced PbTx-3 are presented and the vibrational bands are assigned. We show that inelastic electron tunneling spectroscopy can be used to monitor and measure the vibrational fingerprint of the brevetoxins at a level as low as 1 ng.

Original languageEnglish
Pages (from-to)523-527
Number of pages5
JournalApplied Spectroscopy
Volume52
Issue number4
StatePublished - Apr 1 1998

Fingerprint

Electron tunneling
electron tunneling
Spectroscopy
Vibrational spectra
Lactones
Aldehydes
aldehydes
vibrational spectra
spectroscopy
Absorption spectra
absorption spectra
rings
Ptychodiscus brevis T2 toxin
brevetoxin

Keywords

  • Absorption
  • Brevetoxin
  • Gymnodinium breve
  • IETS
  • Inelastic electron tunneling spectroscopy
  • PbTx-2
  • PbTx-3
  • PbTx-9
  • Spectroscopy
  • Toxin
  • UV-visible
  • Vibrational spectroscopy

ASJC Scopus subject areas

  • Spectroscopy
  • Instrumentation

Cite this

Brousseau, J. L., Vibet, N., Leblanc, R., Rein, K. S., & Baden, D. G. (1998). UV-visible and inelastic electron tunneling spectroscopies of brevetoxins. Applied Spectroscopy, 52(4), 523-527.

UV-visible and inelastic electron tunneling spectroscopies of brevetoxins. / Brousseau, J. L.; Vibet, N.; Leblanc, Roger; Rein, K. S.; Baden, D. G.

In: Applied Spectroscopy, Vol. 52, No. 4, 01.04.1998, p. 523-527.

Research output: Contribution to journalArticle

Brousseau, JL, Vibet, N, Leblanc, R, Rein, KS & Baden, DG 1998, 'UV-visible and inelastic electron tunneling spectroscopies of brevetoxins', Applied Spectroscopy, vol. 52, no. 4, pp. 523-527.
Brousseau JL, Vibet N, Leblanc R, Rein KS, Baden DG. UV-visible and inelastic electron tunneling spectroscopies of brevetoxins. Applied Spectroscopy. 1998 Apr 1;52(4):523-527.
Brousseau, J. L. ; Vibet, N. ; Leblanc, Roger ; Rein, K. S. ; Baden, D. G. / UV-visible and inelastic electron tunneling spectroscopies of brevetoxins. In: Applied Spectroscopy. 1998 ; Vol. 52, No. 4. pp. 523-527.
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AU - Vibet, N.

AU - Leblanc, Roger

AU - Rein, K. S.

AU - Baden, D. G.

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N2 - We have studied the UV-vis and vibrational spectra of the breve-toxins PbTx-2, PbTx-3, PbTx-9, and 2, 3, 27, 28, 41, 43-hexahydro-(reduced) PbTx-3. The absorption at 194 nm (∈ ≈ 18 000 L mol-1 cm-1) of PbTx-2 and PbTx-3 is assigned to the π-π* transition of the lactone conjugated double bonds. The n-π* transition of the lactone is seen at 239 nm (∈ ≈ 2 800 L mol-1 cm-1). The absorption band at 208 nm for PbTx-2 is assigned to the conjugated double bonds of the aldehyde function located on the K-ring side chain. The inelastic electron tunneling spectra of PbTx-2, PbTx-3, PbTx-9, and fully reduced PbTx-3 are presented and the vibrational bands are assigned. We show that inelastic electron tunneling spectroscopy can be used to monitor and measure the vibrational fingerprint of the brevetoxins at a level as low as 1 ng.

AB - We have studied the UV-vis and vibrational spectra of the breve-toxins PbTx-2, PbTx-3, PbTx-9, and 2, 3, 27, 28, 41, 43-hexahydro-(reduced) PbTx-3. The absorption at 194 nm (∈ ≈ 18 000 L mol-1 cm-1) of PbTx-2 and PbTx-3 is assigned to the π-π* transition of the lactone conjugated double bonds. The n-π* transition of the lactone is seen at 239 nm (∈ ≈ 2 800 L mol-1 cm-1). The absorption band at 208 nm for PbTx-2 is assigned to the conjugated double bonds of the aldehyde function located on the K-ring side chain. The inelastic electron tunneling spectra of PbTx-2, PbTx-3, PbTx-9, and fully reduced PbTx-3 are presented and the vibrational bands are assigned. We show that inelastic electron tunneling spectroscopy can be used to monitor and measure the vibrational fingerprint of the brevetoxins at a level as low as 1 ng.

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KW - PbTx-9

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KW - UV-visible

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