Über den Mechanismus der Photolumineszenz von Farbstoffphosphoren

Jabłoński, Adam

doi:10.1007/bf01330795

Cited by 179 publications

(61 citation statements)

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“…The Jabłoński [1,2] Diagram is considered as the first clear step ahead in the development of molecular photophysics because it identified the critical lowest three states N, F, and M as quantized molecular electronic states. Jabłoński then explored the quantum yield and kinetic relations between these states, especially including direct N --> M electronic absorption (of severely limited intensity), the M N direct phosphorescence, and also the temperature dependent M F reactivation of what is now called a delayed fluorescence (M)F --> N. Jabłoński did not admit the possibility that the state M could be a triplet state (however, see Sec.…”

Section: Mystery Of Molecular Phosphorescencementioning

confidence: 99%

“…Surveying the origins of this delayed development offers an opportunity of (a) examining the unraveling of the unique complexities of polyatomic systems and (b) highlighting the contrasting and unique behavior of these relative to the simpler behavior of atomic and diatomic cases. This presentation is aimed at offering a commentary on the key phenomena discovered and interpreted over the past six decades since Alexander Jabłoński's first clear step [1,2] in the direction of contemporary molecular photophysics [3].…”

Section: Introductionmentioning

confidence: 99%

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From Jabłoński To Femtoseconds. Evolution of Molecular Photophysics

Kasha

1999

Acta Phys. Pol. A

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A presentation is given, with retrospective commentary, on the experimental and theoretical contributions to key steps in the evolution of the framework of contemporary molecular photophysics from the Jabłoński Diagram to femtosecond range excitation phenomena. The distinctive features of polyatomic molecules separating their behavior from atomic and diatomic molecules are emphasized. Justification is given for the statement that spin-orbital coupling with its relativistic component commonly domi- nates the molecular excitation dynamics of light-(low-Z)-atom molecules.The paper deals with single-photon, single-molecule excitations. Some examples of single-photon, multi-molecule and multi-photon, single-molecule excitation phenomena are listed. A selection of these is made to illustrate the prevalence of femtosecond excitation modes.

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Section: Mystery Of Molecular Phosphorescencementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

From Jabłoński To Femtoseconds. Evolution of Molecular Photophysics

Kasha

1999

Acta Phys. Pol. A

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“…Mulliken discovered that oxygen in the ground state occurred as a triplet [10,11], then in 1931, Kautsky proposed that singlet oxygen ( 1 O 2 ) formed due to energy transfer from the excited photosensitiser to oxygen [12], which allowed initiation of photodynamic reactions. Further studies by a number of researchers developed the understanding of the processes involved and the currently held theory of the mechanism of action of photosensitisers [13][14][15][16][17][18], detailed in Figure 1. The main photophysical and photochemical processes involved are thought to be similar for all photosensitisers.…”

Section: Mechanism Of Action Of Photosensitisersmentioning

confidence: 99%

Photosensitisers – the progression from photodynamic therapy to anti-infective surfaces

Craig

McCoy

Gorman³

et al. 2014

Expert Opinion on Drug Delivery

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Introduction: The application of light as a stimulus in pharmaceutical systems and the associated ability to provide precise spatiotemporal control over location, wavelength and intensity, allowing ease of external control independent of environmental conditionals, has led to its increased use. Of particular note is the use of light with photosensitisers.Areas covered: Photosensitisers are widely used in photodynamic therapy to cause a cidal effect towards cells on irradiation due to the generation of reactive oxygen species. These cidal effects have also been employed to treat infectious diseases.The effects and benefits of photosensitisers in the treatment of such conditions are still being developed and further realised, with the design of novel delivery strategies.This review provides an overview of the realisation of the pharmaceutically relevant uses of photosensitisers both in the context of current research, and in terms of current clinical application, and looks to the future direction. ! 2!Expert opinion: Substantial advances have been and are being made in the use of photosensitisers. Of particular note are their antimicrobial applications, due to absence of resistance that is so frequently associated with conventional treatments.Their potency of action, and the ability to immobilise to polymeric supports is opening a wide range of possibilities with great potential for use in healthcare infection prevention strategies.

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“…There are both radiative and nonradiative transitions between three levels of the Jabłoński Diagram for complex organic molecules [2,3]. It was shown in the paper of one of the authors and of Lubimtzev in the proceedings devoted to Fifty Years of the Jabłoński Diagram [4] that nonradiative transitions between high excited levels of complex molecules occur at extremely high rates knr(Sn -Sn -1) = 10 12 -10 14 s -1 .…”

Section: Introductionmentioning

confidence: 99%

Inductive-Resonant Theory of Nonradiative Transitions for Complex Organic Molecules in Condensed Phase

Ермолаев

Свешникова

1999

Acta Phys. Pol. A

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Ours and literature data on influence of replacement of deuterium by. protium in complex organic molecules on nonradiative triplet-singlet transition rates are discussed from the standpoint of the inductive-resonant theory of this process. It has been shown that the extent to which the protium introduction in molecule affects the nonradiative rate depends on distance between protium atom and the vibronic molecular oscillator of triplet-singlet transition and on π-electronic density near-by protium.

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Über den Mechanismus der Photolumineszenz von Farbstoffphosphoren

Cited by 179 publications

References 0 publications

From Jabłoński To Femtoseconds. Evolution of Molecular Photophysics

From Jabłoński To Femtoseconds. Evolution of Molecular Photophysics

Photosensitisers – the progression from photodynamic therapy to anti-infective surfaces

Inductive-Resonant Theory of Nonradiative Transitions for Complex Organic Molecules in Condensed Phase

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