Spectral-luminescent study of the porphyrin-diketones and their complexes

Dmitri B. Papkovsky; Gelii V. Ponomarev

doi:10.1016/S1386-1425(01)00451-6

Spectral-luminescent study of the porphyrin-diketones and their complexes

Dmitri B. Papkovsky
, Gelii V. Ponomarev

School of Biochemistry and Cell Biology

Institute of Biomedical Chemistry

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

Abstract

Syntheses of octaethylporphine-diketone (OEPDK) and its platinum(II) and palladium(II) complexes (PtOEPDK, PdOEPDK) were optimized, and the dyes were isolated in a pure form in preparative quantities. They were characterized by the NMR, UV-VIS absorption and emission spectroscopy. Electronic spectra of these dyes (absorption and luminescence) were investigated in detail, and compared to corresponding porphyrins and porphyrin-monoketones. OEPDK showed a strong fluorescence at about 700 nm, while PtOEPDK and PdOEPDK showed very weak room-temperature phosphorescence in the region of 850-1100 nm and practically no fluorescence. Protonation mechanisms were studied for these dyes. Protonation at sites other than pyrrole nitrogen atoms was shown to occur, corresponding protomeric spectral forms are presented. The possibilities of the use of porphyrin-diketones as longwave fluorescent and phosphorescent probes are discussed.

Original language	English
Pages (from-to)	1897-1905
Number of pages	9
Journal	Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume	57
Issue number	9
DOIs	https://doi.org/10.1016/S1386-1425(01)00451-6
Publication status	Published - Aug 2001

Keywords

Fluorescence
Metalloporphyrins
Phosphorescence
Porphyrin-ketones
Porphyrins

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10.1016/S1386-1425(01)00451-6

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title = "Spectral-luminescent study of the porphyrin-diketones and their complexes",

abstract = "Syntheses of octaethylporphine-diketone (OEPDK) and its platinum(II) and palladium(II) complexes (PtOEPDK, PdOEPDK) were optimized, and the dyes were isolated in a pure form in preparative quantities. They were characterized by the NMR, UV-VIS absorption and emission spectroscopy. Electronic spectra of these dyes (absorption and luminescence) were investigated in detail, and compared to corresponding porphyrins and porphyrin-monoketones. OEPDK showed a strong fluorescence at about 700 nm, while PtOEPDK and PdOEPDK showed very weak room-temperature phosphorescence in the region of 850-1100 nm and practically no fluorescence. Protonation mechanisms were studied for these dyes. Protonation at sites other than pyrrole nitrogen atoms was shown to occur, corresponding protomeric spectral forms are presented. The possibilities of the use of porphyrin-diketones as longwave fluorescent and phosphorescent probes are discussed.",

keywords = "Fluorescence, Metalloporphyrins, Phosphorescence, Porphyrin-ketones, Porphyrins",

author = "Papkovsky, \{Dmitri B.\} and Ponomarev, \{Gelii V.\}",

year = "2001",

month = aug,

doi = "10.1016/S1386-1425(01)00451-6",

language = "English",

volume = "57",

pages = "1897--1905",

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

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TY - JOUR

T1 - Spectral-luminescent study of the porphyrin-diketones and their complexes

AU - Papkovsky, Dmitri B.

AU - Ponomarev, Gelii V.

PY - 2001/8

Y1 - 2001/8

N2 - Syntheses of octaethylporphine-diketone (OEPDK) and its platinum(II) and palladium(II) complexes (PtOEPDK, PdOEPDK) were optimized, and the dyes were isolated in a pure form in preparative quantities. They were characterized by the NMR, UV-VIS absorption and emission spectroscopy. Electronic spectra of these dyes (absorption and luminescence) were investigated in detail, and compared to corresponding porphyrins and porphyrin-monoketones. OEPDK showed a strong fluorescence at about 700 nm, while PtOEPDK and PdOEPDK showed very weak room-temperature phosphorescence in the region of 850-1100 nm and practically no fluorescence. Protonation mechanisms were studied for these dyes. Protonation at sites other than pyrrole nitrogen atoms was shown to occur, corresponding protomeric spectral forms are presented. The possibilities of the use of porphyrin-diketones as longwave fluorescent and phosphorescent probes are discussed.

AB - Syntheses of octaethylporphine-diketone (OEPDK) and its platinum(II) and palladium(II) complexes (PtOEPDK, PdOEPDK) were optimized, and the dyes were isolated in a pure form in preparative quantities. They were characterized by the NMR, UV-VIS absorption and emission spectroscopy. Electronic spectra of these dyes (absorption and luminescence) were investigated in detail, and compared to corresponding porphyrins and porphyrin-monoketones. OEPDK showed a strong fluorescence at about 700 nm, while PtOEPDK and PdOEPDK showed very weak room-temperature phosphorescence in the region of 850-1100 nm and practically no fluorescence. Protonation mechanisms were studied for these dyes. Protonation at sites other than pyrrole nitrogen atoms was shown to occur, corresponding protomeric spectral forms are presented. The possibilities of the use of porphyrin-diketones as longwave fluorescent and phosphorescent probes are discussed.

KW - Fluorescence

KW - Metalloporphyrins

KW - Phosphorescence

KW - Porphyrin-ketones

KW - Porphyrins

UR - https://www.scopus.com/pages/publications/0034743247

U2 - 10.1016/S1386-1425(01)00451-6

DO - 10.1016/S1386-1425(01)00451-6

M3 - Article

C2 - 11506042

AN - SCOPUS:0034743247

SN - 1386-1425

VL - 57

SP - 1897

EP - 1905

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

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

IS - 9

ER -

Spectral-luminescent study of the porphyrin-diketones and their complexes

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Keywords

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