Ultrafast dynamics and Raman imaging of metal complexes of tetrasulphonated phthalocyanines in human cancerous and noncancerous breast tissues
A promising material in medicine, electronics, optoelectronics, electrochemistry, catalysis and photophysics, Al(III) phthalocyanine chloride tetrasulfonic acid (AlPcS4) is investigated at biological interfaces of human breast tissue by means of time-resolved spectroscopy. The nature of fast process...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2013-03-01
|
| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/20134107006 |
| _version_ | 1818563478690988032 |
|---|---|
| author | Musial J. Freysz E. Tondusson M. Brozek-Pluska B. Jarota A. Abramczyk H. Kordek R. |
| author_facet | Musial J. Freysz E. Tondusson M. Brozek-Pluska B. Jarota A. Abramczyk H. Kordek R. |
| author_sort | Musial J. |
| collection | DOAJ |
| description | A promising material in medicine, electronics, optoelectronics, electrochemistry, catalysis and photophysics, Al(III) phthalocyanine chloride tetrasulfonic acid (AlPcS4) is investigated at biological interfaces of human breast tissue by means of time-resolved spectroscopy. The nature of fast processes and pathways of the competing relaxation mechanisms from the initially excited electronic states of a photosensitizer at biological interfaces have been studied. Comparison between the results in the biological environment of the breast tissues and in aqueous solutions demonstrates that the photochemical mechanisms become dramatically different. The presented results provide a basis for a substantial revision of the commonly accepted assumption that photochemistry of the bulk properties of photosensitizers in solutions can be translated to the interfacial region. First, in solution the dynamics of the photosensitizer is much slower than that at the biological interface. Second, the dynamics of the photosensitizer in the cancerous tissue is dramatically slower than that in noncancerous tissue. Our results provide evidence that molecular structures responsible for harvesting of the light energy in biological tissue find their ways for a recovery through some special features of the potential energy surfaces such as conical intersections, which facilitate the rate of radiationless transitions and maintain the photostability in the biological systems. |
| first_indexed | 2024-12-14T01:17:03Z |
| format | Article |
| id | doaj.art-8d2e0804b28a40bbaf33c710b3ca8092 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-14T01:17:03Z |
| publishDate | 2013-03-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-8d2e0804b28a40bbaf33c710b3ca80922022-12-21T23:22:32ZengEDP SciencesEPJ Web of Conferences2100-014X2013-03-01410700610.1051/epjconf/20134107006Ultrafast dynamics and Raman imaging of metal complexes of tetrasulphonated phthalocyanines in human cancerous and noncancerous breast tissuesMusial J.Freysz E.Tondusson M.Brozek-Pluska B.Jarota A.Abramczyk H.Kordek R.A promising material in medicine, electronics, optoelectronics, electrochemistry, catalysis and photophysics, Al(III) phthalocyanine chloride tetrasulfonic acid (AlPcS4) is investigated at biological interfaces of human breast tissue by means of time-resolved spectroscopy. The nature of fast processes and pathways of the competing relaxation mechanisms from the initially excited electronic states of a photosensitizer at biological interfaces have been studied. Comparison between the results in the biological environment of the breast tissues and in aqueous solutions demonstrates that the photochemical mechanisms become dramatically different. The presented results provide a basis for a substantial revision of the commonly accepted assumption that photochemistry of the bulk properties of photosensitizers in solutions can be translated to the interfacial region. First, in solution the dynamics of the photosensitizer is much slower than that at the biological interface. Second, the dynamics of the photosensitizer in the cancerous tissue is dramatically slower than that in noncancerous tissue. Our results provide evidence that molecular structures responsible for harvesting of the light energy in biological tissue find their ways for a recovery through some special features of the potential energy surfaces such as conical intersections, which facilitate the rate of radiationless transitions and maintain the photostability in the biological systems.http://dx.doi.org/10.1051/epjconf/20134107006 |
| spellingShingle | Musial J. Freysz E. Tondusson M. Brozek-Pluska B. Jarota A. Abramczyk H. Kordek R. Ultrafast dynamics and Raman imaging of metal complexes of tetrasulphonated phthalocyanines in human cancerous and noncancerous breast tissues EPJ Web of Conferences |
| title | Ultrafast dynamics and Raman imaging of metal complexes of tetrasulphonated phthalocyanines in human cancerous and noncancerous breast tissues |
| title_full | Ultrafast dynamics and Raman imaging of metal complexes of tetrasulphonated phthalocyanines in human cancerous and noncancerous breast tissues |
| title_fullStr | Ultrafast dynamics and Raman imaging of metal complexes of tetrasulphonated phthalocyanines in human cancerous and noncancerous breast tissues |
| title_full_unstemmed | Ultrafast dynamics and Raman imaging of metal complexes of tetrasulphonated phthalocyanines in human cancerous and noncancerous breast tissues |
| title_short | Ultrafast dynamics and Raman imaging of metal complexes of tetrasulphonated phthalocyanines in human cancerous and noncancerous breast tissues |
| title_sort | ultrafast dynamics and raman imaging of metal complexes of tetrasulphonated phthalocyanines in human cancerous and noncancerous breast tissues |
| url | http://dx.doi.org/10.1051/epjconf/20134107006 |
| work_keys_str_mv | AT musialj ultrafastdynamicsandramanimagingofmetalcomplexesoftetrasulphonatedphthalocyaninesinhumancancerousandnoncancerousbreasttissues AT freysze ultrafastdynamicsandramanimagingofmetalcomplexesoftetrasulphonatedphthalocyaninesinhumancancerousandnoncancerousbreasttissues AT tondussonm ultrafastdynamicsandramanimagingofmetalcomplexesoftetrasulphonatedphthalocyaninesinhumancancerousandnoncancerousbreasttissues AT brozekpluskab ultrafastdynamicsandramanimagingofmetalcomplexesoftetrasulphonatedphthalocyaninesinhumancancerousandnoncancerousbreasttissues AT jarotaa ultrafastdynamicsandramanimagingofmetalcomplexesoftetrasulphonatedphthalocyaninesinhumancancerousandnoncancerousbreasttissues AT abramczykh ultrafastdynamicsandramanimagingofmetalcomplexesoftetrasulphonatedphthalocyaninesinhumancancerousandnoncancerousbreasttissues AT kordekr ultrafastdynamicsandramanimagingofmetalcomplexesoftetrasulphonatedphthalocyaninesinhumancancerousandnoncancerousbreasttissues |