INTERACTION BETWEEN ACIDIC TETRAPHENYL PORPHYRIN SULPHATE WITH DOPAMELANINE

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RAHIMI R.; MOKHTARI MEHR M.; RABBANI M.

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Journal: JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY) Year:2011 | Volume:21 | Issue:80 (CHEMISTRY ISSUE) Page(s): 33-40

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Title

INTERACTION BETWEEN ACIDIC TETRAPHENYL PORPHYRIN SULPHATE WITH DOPAMELANINE

Author(s)

RAHIMI R. | MOKHTARI MEHR M. | RABBANI M. | Issue Writer Certificate

Keywords

DOPA MELANINQ2

PORPHYRINQ2

TPPSQ2

Abstract

Introduction: Even though melanin is commonly viewed as a photoprotective agent, the molecular mechanism of the melanin-related photoprotective action remains unclear. We studied the interaction of a synthetic DOPA MELANIN with PORPHYRIN using an array of spectroscopic techniques.Aim: The aim of this work is to show interaction between a kind of acidic PORPHYRIN and DOPA MELANIN polymer which, can influence the effectiveness of photoconversion.Materials and Methods: DOPA MELANIN was synthesized from polymerization of 3, 4-dihydroxyphenylalanin (L-Dopa). TPP was synthesized by reaction of pyrrole and benzaldehyde in propionic acid. TPPS was prepared by reaction of TPP and Sulfuric acid.Results: absorption spectra of both PORPHYRINs and their mixtures with DOPA MELANIN were measured in buffered aqueous solution at room temperature. It has been confirmed that DOPA MELANIN forms a complex with the cationic PORPHYRIN in its ground state, which significantly modifies the optical properties of the dye molecule. Although no such complex can be detected for the anionic PORPHYRIN, some interaction between melanin and the PORPHYRIN molecule can be detected in its excited state.Conclusion: Our data also suggest that the thermal properties of melanin can be modified by PORPHYRINs, particularly by the cationic form of the dye. The ionic complexes of DOPA MELANIN with the positively charged PORPHYRIN exhibit properties typically for a supermolecular system that liberates heat as a whole.

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APA: Copy

RAHIMI, R., MOKHTARI MEHR, M., & RABBANI, M.. (2011). INTERACTION BETWEEN ACIDIC TETRAPHENYL PORPHYRIN SULPHATE WITH DOPAMELANINE. JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY), 21(80 (CHEMISTRY ISSUE)), 33-40. SID. https://sid.ir/paper/70578/en

Vancouver: Copy

RAHIMI R., MOKHTARI MEHR M., RABBANI M.. INTERACTION BETWEEN ACIDIC TETRAPHENYL PORPHYRIN SULPHATE WITH DOPAMELANINE. JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY)[Internet]. 2011;21(80 (CHEMISTRY ISSUE)):33-40. Available from: https://sid.ir/paper/70578/en

IEEE: Copy

R. RAHIMI, M. MOKHTARI MEHR, and M. RABBANI, “INTERACTION BETWEEN ACIDIC TETRAPHENYL PORPHYRIN SULPHATE WITH DOPAMELANINE,” JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY), vol. 21, no. 80 (CHEMISTRY ISSUE), pp. 33–40, 2011, [Online]. Available: https://sid.ir/paper/70578/en

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