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Photophysical properties of Sn (IV)tetraphenylporphyrin-pyrene dyad with a β-vinyl linker

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Photophysical properties of Sn (IV)tetraphenylporphyrin-pyrene dyad with a β-vinyl linker. / Reeta, P. Silviya; Khetubol, Adis; Jella, Tejaswi; Chukharev, Vladimir; Abou-Chahine, Fawzi; Tkachenko, Nikolai V.; Giribabu, L.; Lemmetyinen, Helge.

In: Journal of Porphyrins and Phthalocyanines, Vol. 19, No. 1-3, 01.01.2015, p. 288-300.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Reeta, PS, Khetubol, A, Jella, T, Chukharev, V, Abou-Chahine, F, Tkachenko, NV, Giribabu, L & Lemmetyinen, H 2015, 'Photophysical properties of Sn (IV)tetraphenylporphyrin-pyrene dyad with a β-vinyl linker', Journal of Porphyrins and Phthalocyanines, vol. 19, no. 1-3, pp. 288-300. https://doi.org/10.1142/S1088424615500108

APA

Reeta, P. S., Khetubol, A., Jella, T., Chukharev, V., Abou-Chahine, F., Tkachenko, N. V., ... Lemmetyinen, H. (2015). Photophysical properties of Sn (IV)tetraphenylporphyrin-pyrene dyad with a β-vinyl linker. Journal of Porphyrins and Phthalocyanines, 19(1-3), 288-300. https://doi.org/10.1142/S1088424615500108

Vancouver

Reeta PS, Khetubol A, Jella T, Chukharev V, Abou-Chahine F, Tkachenko NV et al. Photophysical properties of Sn (IV)tetraphenylporphyrin-pyrene dyad with a β-vinyl linker. Journal of Porphyrins and Phthalocyanines. 2015 Jan 1;19(1-3):288-300. https://doi.org/10.1142/S1088424615500108

Author

Reeta, P. Silviya ; Khetubol, Adis ; Jella, Tejaswi ; Chukharev, Vladimir ; Abou-Chahine, Fawzi ; Tkachenko, Nikolai V. ; Giribabu, L. ; Lemmetyinen, Helge. / Photophysical properties of Sn (IV)tetraphenylporphyrin-pyrene dyad with a β-vinyl linker. In: Journal of Porphyrins and Phthalocyanines. 2015 ; Vol. 19, No. 1-3. pp. 288-300.

Bibtex - Download

@article{7df047b2241c44dab3a4e6eeb75b6abb,
title = "Photophysical properties of Sn (IV)tetraphenylporphyrin-pyrene dyad with a β-vinyl linker",
abstract = "A Sn(IV)tetraphenylporphyrin (T) has been functionalized with a β-vinyl pyrene (P) and the photophysical properties of the formed dyad (T-P) with its corresponding precursors were studied in three solvents with different polarities using steady-state and time-resolved measurements in ps and fs timescales. When the pyrene moiety is excited at λex = 340 nm, the fluorescence spectroscopy experiments indicate in all the studied solvents, an efficient quenching of the pyrene emission. When excited at either λex = 340 nm or λex = 405 nm, where porphyrin absorbs, a new emissive excited state complex (T-P)∗is observed at wavelenghts close to the parent porphyrin emission. The emission is more pronounced in nonpolar hexane showing a mono-exponential decay, but bi-exponential decays are observed in more polar dicloromethane and acetonitrile. When the porphyrin moiety is excited at λex = 425 nm, the fs transient absorption analysis shows two different intermediate species (~ 7-11 ps and 80-100 ps) with broad absorption in the near-IR region. This implies either the existence of two different excited conformers (T-P)∗, which decay to the ground state via a charge separated state (CSS), or the formation of the (T-P)∗state via the second excited state of the porphyrin moiety, yielding first an excited emissive v(T-P)∗state, with a lifetime of 80-100 ps.",
keywords = "fs transient absorption, kinetics, optical properties, Sn (IV)tetraphenylporphyrin, β-vinyl pyrene donor",
author = "Reeta, {P. Silviya} and Adis Khetubol and Tejaswi Jella and Vladimir Chukharev and Fawzi Abou-Chahine and Tkachenko, {Nikolai V.} and L. Giribabu and Helge Lemmetyinen",
year = "2015",
month = "1",
day = "1",
doi = "10.1142/S1088424615500108",
language = "English",
volume = "19",
pages = "288--300",
journal = "Journal of Porphyrins and Phthalocyanines",
issn = "1088-4246",
publisher = "Wiley",
number = "1-3",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Photophysical properties of Sn (IV)tetraphenylporphyrin-pyrene dyad with a β-vinyl linker

AU - Reeta, P. Silviya

AU - Khetubol, Adis

AU - Jella, Tejaswi

AU - Chukharev, Vladimir

AU - Abou-Chahine, Fawzi

AU - Tkachenko, Nikolai V.

AU - Giribabu, L.

AU - Lemmetyinen, Helge

PY - 2015/1/1

Y1 - 2015/1/1

N2 - A Sn(IV)tetraphenylporphyrin (T) has been functionalized with a β-vinyl pyrene (P) and the photophysical properties of the formed dyad (T-P) with its corresponding precursors were studied in three solvents with different polarities using steady-state and time-resolved measurements in ps and fs timescales. When the pyrene moiety is excited at λex = 340 nm, the fluorescence spectroscopy experiments indicate in all the studied solvents, an efficient quenching of the pyrene emission. When excited at either λex = 340 nm or λex = 405 nm, where porphyrin absorbs, a new emissive excited state complex (T-P)∗is observed at wavelenghts close to the parent porphyrin emission. The emission is more pronounced in nonpolar hexane showing a mono-exponential decay, but bi-exponential decays are observed in more polar dicloromethane and acetonitrile. When the porphyrin moiety is excited at λex = 425 nm, the fs transient absorption analysis shows two different intermediate species (~ 7-11 ps and 80-100 ps) with broad absorption in the near-IR region. This implies either the existence of two different excited conformers (T-P)∗, which decay to the ground state via a charge separated state (CSS), or the formation of the (T-P)∗state via the second excited state of the porphyrin moiety, yielding first an excited emissive v(T-P)∗state, with a lifetime of 80-100 ps.

AB - A Sn(IV)tetraphenylporphyrin (T) has been functionalized with a β-vinyl pyrene (P) and the photophysical properties of the formed dyad (T-P) with its corresponding precursors were studied in three solvents with different polarities using steady-state and time-resolved measurements in ps and fs timescales. When the pyrene moiety is excited at λex = 340 nm, the fluorescence spectroscopy experiments indicate in all the studied solvents, an efficient quenching of the pyrene emission. When excited at either λex = 340 nm or λex = 405 nm, where porphyrin absorbs, a new emissive excited state complex (T-P)∗is observed at wavelenghts close to the parent porphyrin emission. The emission is more pronounced in nonpolar hexane showing a mono-exponential decay, but bi-exponential decays are observed in more polar dicloromethane and acetonitrile. When the porphyrin moiety is excited at λex = 425 nm, the fs transient absorption analysis shows two different intermediate species (~ 7-11 ps and 80-100 ps) with broad absorption in the near-IR region. This implies either the existence of two different excited conformers (T-P)∗, which decay to the ground state via a charge separated state (CSS), or the formation of the (T-P)∗state via the second excited state of the porphyrin moiety, yielding first an excited emissive v(T-P)∗state, with a lifetime of 80-100 ps.

KW - fs transient absorption

KW - kinetics

KW - optical properties

KW - Sn (IV)tetraphenylporphyrin

KW - β-vinyl pyrene donor

UR - http://www.scopus.com/inward/record.url?scp=84928483683&partnerID=8YFLogxK

U2 - 10.1142/S1088424615500108

DO - 10.1142/S1088424615500108

M3 - Article

VL - 19

SP - 288

EP - 300

JO - Journal of Porphyrins and Phthalocyanines

JF - Journal of Porphyrins and Phthalocyanines

SN - 1088-4246

IS - 1-3

ER -