Photophysical properties of neutral and cationic tetrapyridinoporphyrazines

Cristina Martí; Santi Nonell; Mónica Nicolau; Tomás Torres

doi:10.1562/0031-8655(2000)0710053PPONAC2.0.CO2

Photophysical properties of neutral and cationic tetrapyridinoporphyrazines

Cristina Martí
, Santi Nonell^*
, Mónica Nicolau
, Tomás Torres

^*Corresponding author for this work

Research output: Indexed journal article › Article › peer-review

57 Citations (Scopus)

Abstract

We describe the synthesis and photophysical properties of a series of neutral and cationic 3,4-tetrapyridinoporphyrazines, potential lead photosensitizers for photodynamic inactivation of bacteria. Tetracationic TPyPzs exist essentially as monomers in aqueous systems, but the presence of trialkylated compounds due to incomplete quaternization of the outer nitrogen atoms induces severe aggregation. The absorption, fluorescence, triplet, and singlet oxygen quantum yields for both the neutral and cationic compounds are comparable to those of the related phthalocyanines.

Original language	English
Pages (from-to)	53-59
Number of pages	7
Journal	Photochemistry and Photobiology
Volume	71
Issue number	1
DOIs	https://doi.org/10.1562/0031-8655(2000)0710053PPONAC2.0.CO2
Publication status	Published - 1 Jan 2000

Keywords

Langmuir-blodgett-films
Gram-negative bacteria
Molecular-oxygen
Quantum yields
To-face
Porphyrins
Phthalocyanines
Photosensitizers
Water
Metal

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10.1562/0031-8655(2000)0710053PPONAC2.0.CO2

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abstract = "We describe the synthesis and photophysical properties of a series of neutral and cationic 3,4-tetrapyridinoporphyrazines, potential lead photosensitizers for photodynamic inactivation of bacteria. Tetracationic TPyPzs exist essentially as monomers in aqueous systems, but the presence of trialkylated compounds due to incomplete quaternization of the outer nitrogen atoms induces severe aggregation. The absorption, fluorescence, triplet, and singlet oxygen quantum yields for both the neutral and cationic compounds are comparable to those of the related phthalocyanines.",

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AU - Martí, Cristina

AU - Nonell, Santi

AU - Nicolau, Mónica

AU - Torres, Tomás

PY - 2000/1/1

Y1 - 2000/1/1

N2 - We describe the synthesis and photophysical properties of a series of neutral and cationic 3,4-tetrapyridinoporphyrazines, potential lead photosensitizers for photodynamic inactivation of bacteria. Tetracationic TPyPzs exist essentially as monomers in aqueous systems, but the presence of trialkylated compounds due to incomplete quaternization of the outer nitrogen atoms induces severe aggregation. The absorption, fluorescence, triplet, and singlet oxygen quantum yields for both the neutral and cationic compounds are comparable to those of the related phthalocyanines.

AB - We describe the synthesis and photophysical properties of a series of neutral and cationic 3,4-tetrapyridinoporphyrazines, potential lead photosensitizers for photodynamic inactivation of bacteria. Tetracationic TPyPzs exist essentially as monomers in aqueous systems, but the presence of trialkylated compounds due to incomplete quaternization of the outer nitrogen atoms induces severe aggregation. The absorption, fluorescence, triplet, and singlet oxygen quantum yields for both the neutral and cationic compounds are comparable to those of the related phthalocyanines.

KW - Langmuir-blodgett-films

KW - Gram-negative bacteria

KW - Molecular-oxygen

KW - Quantum yields

KW - To-face

KW - Porphyrins

KW - Phthalocyanines

KW - Photosensitizers

KW - Water

KW - Metal

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Photophysical properties of neutral and cationic tetrapyridinoporphyrazines

Abstract

Keywords

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