Synthesis and photophysical properties of peripherally and non-peripherally mercaptopyridine substituted metal free, Mg(II) and Al(III) phthalocyanines

Yasin Arslanoglu; Mopelola Idowu; Tebello Nyokong

doi:10.1016/j.saa.2012.04.004

Synthesis and photophysical properties of peripherally and non-peripherally mercaptopyridine substituted metal free, Mg(II) and Al(III) phthalocyanines

Yasin Arslanoglu
, Mopelola Idowu
, Tebello Nyokong^*

^*Corresponding author for this work

Department of Basic Sciences

Rhodes University
Federal University of Agriculture, Abeokuta

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

The syntheses and photophysical properties of metallophthalocyanines containing Mg ²⁺ and Al ³⁺ as central metal ions and their unmetallated derivative (complexes 3-8) tetra- substituted at the non-peripheral (α) and peripheral (β) positions with 2-mercaptopyridine are reported. The trends in triplet and fluorescence quantum yields are described for these compounds. The complexes exhibited relatively high triplet quantum yields (Φ _T) ranging from 0.33 to 0.54 and fluorescence quantum yields (Φ _F) ranging from 0.02 to 0.29. Triplet state lifetimes of the complexes were long ranging from 120 to 460 μs, indicating a potential use of these complexes as photosensitizers.

Original language	English
Pages (from-to)	407-413
Number of pages	7
Journal	Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume	95
DOIs	https://doi.org/10.1016/j.saa.2012.04.004
Publication status	Published - Sept 2012

Funding

This work was supported by the Department of Science and Technology (DST) and National Research Foundation (NRF), South Africa through DST/NRF South African Research Chairs Initiative for Professor of Medicinal Chemistry and Nanotechnology as well as Rhodes University. YA thanks Istanbul Technical University, DPT and TUBITAK for leave. MI thanks UNAAB for leave.

Funders
National Research Foundation
Rhodes University
Department of Science and Technology, Ministry of Science and Technology, India

Keywords

2-mercaptopyridine
Fluorescence lifetime
Metallophthalocyanine
Triplet quantum yield

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10.1016/j.saa.2012.04.004

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title = "Synthesis and photophysical properties of peripherally and non-peripherally mercaptopyridine substituted metal free, Mg(II) and Al(III) phthalocyanines",

abstract = "The syntheses and photophysical properties of metallophthalocyanines containing Mg 2+ and Al 3+ as central metal ions and their unmetallated derivative (complexes 3-8) tetra- substituted at the non-peripheral (α) and peripheral (β) positions with 2-mercaptopyridine are reported. The trends in triplet and fluorescence quantum yields are described for these compounds. The complexes exhibited relatively high triplet quantum yields (Φ T) ranging from 0.33 to 0.54 and fluorescence quantum yields (Φ F) ranging from 0.02 to 0.29. Triplet state lifetimes of the complexes were long ranging from 120 to 460 μs, indicating a potential use of these complexes as photosensitizers.",

keywords = "2-mercaptopyridine, Fluorescence lifetime, Metallophthalocyanine, Triplet quantum yield",

author = "Yasin Arslanoglu and Mopelola Idowu and Tebello Nyokong",

year = "2012",

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doi = "10.1016/j.saa.2012.04.004",

language = "English",

volume = "95",

pages = "407--413",

journal = "Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy",

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Synthesis and photophysical properties of peripherally and non-peripherally mercaptopyridine substituted metal free, Mg(II) and Al(III) phthalocyanines. / Arslanoglu, Yasin; Idowu, Mopelola; Nyokong, Tebello.
In: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, Vol. 95, 09.2012, p. 407-413.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Synthesis and photophysical properties of peripherally and non-peripherally mercaptopyridine substituted metal free, Mg(II) and Al(III) phthalocyanines

AU - Arslanoglu, Yasin

AU - Idowu, Mopelola

AU - Nyokong, Tebello

PY - 2012/9

Y1 - 2012/9

N2 - The syntheses and photophysical properties of metallophthalocyanines containing Mg 2+ and Al 3+ as central metal ions and their unmetallated derivative (complexes 3-8) tetra- substituted at the non-peripheral (α) and peripheral (β) positions with 2-mercaptopyridine are reported. The trends in triplet and fluorescence quantum yields are described for these compounds. The complexes exhibited relatively high triplet quantum yields (Φ T) ranging from 0.33 to 0.54 and fluorescence quantum yields (Φ F) ranging from 0.02 to 0.29. Triplet state lifetimes of the complexes were long ranging from 120 to 460 μs, indicating a potential use of these complexes as photosensitizers.

AB - The syntheses and photophysical properties of metallophthalocyanines containing Mg 2+ and Al 3+ as central metal ions and their unmetallated derivative (complexes 3-8) tetra- substituted at the non-peripheral (α) and peripheral (β) positions with 2-mercaptopyridine are reported. The trends in triplet and fluorescence quantum yields are described for these compounds. The complexes exhibited relatively high triplet quantum yields (Φ T) ranging from 0.33 to 0.54 and fluorescence quantum yields (Φ F) ranging from 0.02 to 0.29. Triplet state lifetimes of the complexes were long ranging from 120 to 460 μs, indicating a potential use of these complexes as photosensitizers.

KW - 2-mercaptopyridine

KW - Fluorescence lifetime

KW - Metallophthalocyanine

KW - Triplet quantum yield

UR - https://www.scopus.com/pages/publications/84862207889

U2 - 10.1016/j.saa.2012.04.004

DO - 10.1016/j.saa.2012.04.004

M3 - Article

C2 - 22580134

AN - SCOPUS:84862207889

SN - 1386-1425

VL - 95

SP - 407

EP - 413

JO - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy

JF - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy

ER -

Synthesis and photophysical properties of peripherally and non-peripherally mercaptopyridine substituted metal free, Mg(II) and Al(III) phthalocyanines

Abstract

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Keywords

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