Observation of collision-induced near-IR emission of singlet oxygen O2 a1Δg generated by visible light excitation of gaseous O2 dimol

Furui, Eiji; Akai, Nobuyuki; Ida, Akira; Kawai, Akio; Shibuya, Kazuhiko

doi:10.1016/j.cplett.2009.02.020

Cited by 21 publications

(15 citation statements)

References 26 publications

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“…IUPAC recommendations [65] were adopted for quenching by O 2 with the activation energy obtained by Billington and Borrell [85]. Their measurements are in a very good agreement with the results of Chatelet et al [86] and with the rate obtained later by Furui et al [87]. Findlay and Snelling [88] summarized earlier measurements of collisional deactivation of singlet oxygen and concluded that hydrogen-containing species possess efficiencies close to molecular oxygen, which was recently confirmed for hydrogen [89], water [90], and a range of hydrocarbons [91].…”

Section: Reactions Of Singlet Oxygensupporting

confidence: 54%

On the role of excited species in hydrogen combustion

Konnov

2015

Combustion and Flame

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Section: Reactions Of Singlet Oxygensupporting

confidence: 54%

On the role of excited species in hydrogen combustion

Konnov

2015

Combustion and Flame

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“…Basically it is the dimol counterpart of the 1270 nm monomol transition (two 1270 nm photons have the same energy as one 633 nm photon), with an energy of 1.96 eV. This transition has been employed to assess physical and/or chemical parameters, mainly in high pressure oxygen although there are studies in organic solvents too [99], [101], [123], [173], [174], [175], [176].…”

Section: Direct Optical Excitation Of 1o2mentioning

confidence: 99%

Direct 1O2 optical excitation: A tool for redox biology

Blázquez‐Castro

2017

Redox Biology

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Molecular oxygen (O2) displays very interesting properties. Its first excited state, commonly known as singlet oxygen (1O2), is one of the so-called Reactive Oxygen Species (ROS). It has been implicated in many redox processes in biological systems. For many decades its role has been that of a deleterious chemical species, although very positive clinical applications in the Photodynamic Therapy of cancer (PDT) have been reported. More recently, many ROS, and also 1O2, are in the spotlight because of their role in physiological signaling, like cell proliferation or tissue regeneration. However, there are methodological shortcomings to properly assess the role of 1O2 in redox biology with classical generation procedures. In this review the direct optical excitation of O2 to produce 1O2 will be introduced, in order to present its main advantages and drawbacks for biological studies. This photonic approach can provide with many interesting possibilities to understand and put to use ROS in redox signaling and in the biomedical field.

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“…Direct optical excitation of molecular oxygen can occur both upon single molecular transitions and upon cooperative pair transitions with the participation of О 2 -О 2 complexes. The properties of these transitions have been experimentally studied in the gas phase [1][2][3][4], liquid phase [5][6][7][8], solid matrix [9][10][11], and solutions [12][13][14][15][16][17] using various light sources for direct excitation of oxygen molecules.…”

Section: Introductionmentioning

confidence: 99%