Porphyrin(2.1.2.1) organopalladium complexes as efficient singlet oxygen sensitizers

Four new non-planar and non-aromatic porphyrin organopalladium complexes were synthesized. Conformational structures and optical and electronic properties of the obtained organopalladium complexes containing meso -substituted phenyl, p-tert -butylphenyl, or pentafluorophenyl groups were fully invest...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2024-03, Vol.53 (13), p.5979-5984
Main Authors: Lv, Xiaojuan, Dong, Yuting, Wu, Jinrong, Jiang, Tao, Chen, Feng, Zhang, Tao, Qiu, Fengxian, Xue, Songlin
Format: Article
Language:English
Subjects:
Light irradiation
Optical properties
Porphyrins
Singlet oxygen
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Summary:Four new non-planar and non-aromatic porphyrin organopalladium complexes were synthesized. Conformational structures and optical and electronic properties of the obtained organopalladium complexes containing meso -substituted phenyl, p-tert -butylphenyl, or pentafluorophenyl groups were fully investigated. These complexes showed potent capacity for singlet oxygen ( 1 O 2 ) generation under blue-light irradiation, and the 1 O 2 quantum yields were in the range of 41%-56%, which were comparable to that of Ru(bpy) 3 Cl 2 (57%), and such potency made these organopalladium complexes potential 1 O 2 photo sensitizers for photodynamic therapy. Non-planar and non-aromatic porphyrin(2.1.2.1) organopalladium complexes show singlet oxygen quantum yields as high as 56%, slightly lower than that of Ru(bpy) 3 Cl 2 and some clinically evaluated porphyrinoid 1 O 2 sensitizers.
ISSN:1477-9226
1477-9234
DOI:10.1039/d4dt00143e