Heavy-Atom Free spiro Organoboron Complexes As Triplet Excited States Photosensitizers for Singlet Oxygen Activation

Photosensitizers with long triplet excited state lifetimes are key to their efficient electron transfer or energy transfer processes. Herein, we report a novel class of cyclic trimeric BODIPY arrays which...

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Synthesis and photophysical properties of covalent conjugates of aqua platinum(II) and octacarboxy-substituted zinc phthalocyanine

Journal of Porphyrins and Phthalocyanines ◽

10.1142/s1088424612501209 ◽

2012 ◽

Vol 16 (11) ◽

pp. 1217-1224 ◽

Cited By ~ 4

Author(s):

Roman A. Bulgakov ◽

Nina A. Kuznetsova ◽

Olga V. Dolotova ◽

Ludmila I. Solovieva ◽

John Mack ◽

...

Keyword(s):

Singlet Oxygen ◽

Excited States ◽

Photophysical Properties ◽

Zinc Phthalocyanine ◽

Limited Effect ◽

Oxygen Formation ◽

Dual Action ◽

Photochemical Properties ◽

Triplet Excited States ◽

Covalent Conjugates

New covalent conjugates of aqua platinum(II) and octacarboxy-substituted zinc phthalocyanine, bearing one, two, three and four aqua platinum moieties on the periphery of the Pc ligand have been synthesized and characterized. The effect of the stepwise introduction of the aqua platinums on the photophysical and photochemical properties of these compounds has been investigated in dimethylsulfoxide solution. It has been found that aqua platinum moieties have only a limited effect on the dynamics of the singlet and triplet excited states, on the ability to sensitize singlet oxygen formation and on the photostability. Each conjugate has a high singlet oxygen quantum yield (ΦΔ 0.51–0.62) and thus retains potential for use as a dual action anticancer drugs by acting as a sensitizer for PDT in addition to the likely chemotherapeutic effects of the Pt(II) complexes.

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Inside Cover: Aza-BODIPY Derivatives: Enhanced Quantum Yields of Triplet Excited States and the Generation of Singlet Oxygen and their Role as Facile Sustainable Photooxygenation Catalysts (Chem. Eur. J. 40/2012)

Chemistry - A European Journal ◽

10.1002/chem.201290173 ◽

2012 ◽

Vol 18 (40) ◽

pp. 12534-12534

Author(s):

Nagappanpillai Adarsh ◽

Madhesh Shanmugasundaram ◽

Rekha R. Avirah ◽

Danaboyina Ramaiah

Keyword(s):

Singlet Oxygen ◽

Excited States ◽

Quantum Yields ◽

Triplet Excited States

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Quantifying photo-production of triplet excited states and singlet oxygen from effluent organic matter

Water Research ◽

10.1016/j.watres.2019.03.002 ◽

2019 ◽

Vol 156 ◽

pp. 23-33 ◽

Cited By ~ 18

Author(s):

Meghan O'Connor ◽

Samantha R. Helal ◽

Douglas E. Latch ◽

William A. Arnold

Keyword(s):

Organic Matter ◽

Singlet Oxygen ◽

Excited States ◽

Effluent Organic Matter ◽

Triplet Excited States ◽

Photo Production

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Generation of Triplet Excited States via Photoinduced Electron Transfer in meso-anthra-BODIPY: Fluorogenic Response toward Singlet Oxygen in Solution and in Vitro

Journal of the American Chemical Society ◽

10.1021/jacs.7b00551 ◽

2017 ◽

Vol 139 (18) ◽

pp. 6282-6285 ◽

Cited By ~ 123

Author(s):

Mikhail A. Filatov ◽

Safakath Karuthedath ◽

Pavel M. Polestshuk ◽

Huguette Savoie ◽

Keith J. Flanagan ◽

...

Keyword(s):

Electron Transfer ◽

Singlet Oxygen ◽

Excited States ◽

Photoinduced Electron Transfer ◽

Triplet Excited States

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Photostabilization of endogenous porphyrins: excited state quenching by fused ring cyanoacrylates

Photochemical & Photobiological Sciences ◽

10.1039/c4pp00090k ◽

2014 ◽

Vol 13 (8) ◽

pp. 1180-1184 ◽

Cited By ~ 5

Author(s):

Steffen Jockusch ◽

Craig Bonda ◽

Shengkui Hu

Keyword(s):

Excited State ◽

Singlet Oxygen ◽

Excited States ◽

Protoporphyrin Ix ◽

Oxygen Generation ◽

Singlet Oxygen Generation ◽

Fused Ring ◽

Triplet Excited States ◽

Excited State Quenching

Tricyclic cyanoacrylates quench singlet and triplet excited states of the endogenous chromophore protoporphyrin IX to prevent harmful singlet oxygen generation.

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