Solvent Effect, Photochemical and Photophysical Properties of Phthalocyanines with Different Metallic Nuclei
Photophysical and photochemical properties of lithium phthalocyanine (1), gallium(III) phthalocyanine chloride (2), titanium(IV) phthalocyanine dichloride (3) and iron(II) phthalocyanine (4) were investigated in dimethyl sulfoxide (DMSO), tetrahydrofuran (THF) and DMSO-THF mixtures. The influence of...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Universidade Federal de Mato Grosso do Sul
2017-12-01
|
| Series: | Orbital: The Electronic Journal of Chemistry |
| Subjects: | |
| Online Access: | https://periodicos.ufms.br/index.php/orbital/article/view/16414 |
| _version_ | 1797946844193488896 |
|---|---|
| author | Charles Biral Silva Anderson Orzari Ribeiro Hueder Paulo Moisés de Oliveira |
| author_facet | Charles Biral Silva Anderson Orzari Ribeiro Hueder Paulo Moisés de Oliveira |
| author_sort | Charles Biral Silva |
| collection | DOAJ |
| description | Photophysical and photochemical properties of lithium phthalocyanine (1), gallium(III) phthalocyanine chloride (2), titanium(IV) phthalocyanine dichloride (3) and iron(II) phthalocyanine (4) were investigated in dimethyl sulfoxide (DMSO), tetrahydrofuran (THF) and DMSO-THF mixtures. The influence of the central metal on these properties was analyzed according to solvent type, axial ligands and their paramagnetic and diamagnetic effect. Fluorescence lifetimes were recorded using a time correlated single photon counting setup (TCSPC) technique. In order to demonstrate the generation of reactive oxygen species under light irradiation, the indirect method (applying 1,3-diphenylisobenzofuran (DPBF) as chemical suppressor) and the direct method (analyzing the phosphorescence decay curves of singlete oxygen at 1270 nm) were employed. Compounds 1, 2 and 3 showed a monomeric behavior in all media while compound 4 presented low aggregation in DMSO, but a very pronounced aggregation behavior in THF. Steady-state fluorescence anisotropy was compared with emission spectra and complex 4 presented values beyond the expected limits.
DOI: http://dx.doi.org/10.17807/orbital.v9i5.1047
|
| first_indexed | 2024-04-10T21:17:27Z |
| format | Article |
| id | doaj.art-70122739ea2d4e7bbdac122a61457910 |
| institution | Directory Open Access Journal |
| issn | 1984-6428 |
| language | English |
| last_indexed | 2024-04-10T21:17:27Z |
| publishDate | 2017-12-01 |
| publisher | Universidade Federal de Mato Grosso do Sul |
| record_format | Article |
| series | Orbital: The Electronic Journal of Chemistry |
| spelling | doaj.art-70122739ea2d4e7bbdac122a614579102023-01-20T10:57:23ZengUniversidade Federal de Mato Grosso do SulOrbital: The Electronic Journal of Chemistry1984-64282017-12-0195Solvent Effect, Photochemical and Photophysical Properties of Phthalocyanines with Different Metallic NucleiCharles Biral Silva0Anderson Orzari Ribeiro1Hueder Paulo Moisés de Oliveira2Universidade Federal do ABCUniversidade Federal do ABCUniversidade Federal do ABCPhotophysical and photochemical properties of lithium phthalocyanine (1), gallium(III) phthalocyanine chloride (2), titanium(IV) phthalocyanine dichloride (3) and iron(II) phthalocyanine (4) were investigated in dimethyl sulfoxide (DMSO), tetrahydrofuran (THF) and DMSO-THF mixtures. The influence of the central metal on these properties was analyzed according to solvent type, axial ligands and their paramagnetic and diamagnetic effect. Fluorescence lifetimes were recorded using a time correlated single photon counting setup (TCSPC) technique. In order to demonstrate the generation of reactive oxygen species under light irradiation, the indirect method (applying 1,3-diphenylisobenzofuran (DPBF) as chemical suppressor) and the direct method (analyzing the phosphorescence decay curves of singlete oxygen at 1270 nm) were employed. Compounds 1, 2 and 3 showed a monomeric behavior in all media while compound 4 presented low aggregation in DMSO, but a very pronounced aggregation behavior in THF. Steady-state fluorescence anisotropy was compared with emission spectra and complex 4 presented values beyond the expected limits. DOI: http://dx.doi.org/10.17807/orbital.v9i5.1047 https://periodicos.ufms.br/index.php/orbital/article/view/16414metallic nucleiphthalocyaninessingle photon countingsinglet oxygen phosphorescencesolvent effect |
| spellingShingle | Charles Biral Silva Anderson Orzari Ribeiro Hueder Paulo Moisés de Oliveira Solvent Effect, Photochemical and Photophysical Properties of Phthalocyanines with Different Metallic Nuclei Orbital: The Electronic Journal of Chemistry metallic nuclei phthalocyanines single photon counting singlet oxygen phosphorescence solvent effect |
| title | Solvent Effect, Photochemical and Photophysical Properties of Phthalocyanines with Different Metallic Nuclei |
| title_full | Solvent Effect, Photochemical and Photophysical Properties of Phthalocyanines with Different Metallic Nuclei |
| title_fullStr | Solvent Effect, Photochemical and Photophysical Properties of Phthalocyanines with Different Metallic Nuclei |
| title_full_unstemmed | Solvent Effect, Photochemical and Photophysical Properties of Phthalocyanines with Different Metallic Nuclei |
| title_short | Solvent Effect, Photochemical and Photophysical Properties of Phthalocyanines with Different Metallic Nuclei |
| title_sort | solvent effect photochemical and photophysical properties of phthalocyanines with different metallic nuclei |
| topic | metallic nuclei phthalocyanines single photon counting singlet oxygen phosphorescence solvent effect |
| url | https://periodicos.ufms.br/index.php/orbital/article/view/16414 |
| work_keys_str_mv | AT charlesbiralsilva solventeffectphotochemicalandphotophysicalpropertiesofphthalocyanineswithdifferentmetallicnuclei AT andersonorzariribeiro solventeffectphotochemicalandphotophysicalpropertiesofphthalocyanineswithdifferentmetallicnuclei AT huederpaulomoisesdeoliveira solventeffectphotochemicalandphotophysicalpropertiesofphthalocyanineswithdifferentmetallicnuclei |