Photoluminescence of a new water‐insoluble polysiloxane film containing pendant Ru(bpy)       3    2+     and its quenching by dioxygen | Zendy

Nagai Keiji | Zendy; Takamiya Nobuo | Zendy; Kaneko Masao | Zendy

Premium

Photoluminescence of a new water‐insoluble polysiloxane film containing pendant Ru(bpy) 3 2+ and its quenching by dioxygen

Author(s) -

Nagai Keiji,

Takamiya Nobuo,

Kaneko Masao

Publication year - 1996

Publication title -

macromolecular chemistry and physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.57

H-Index - 112

eISSN - 1521-3935

pISSN - 1022-1352

DOI - 10.1002/macp.1996.021970930

Subject(s) - quenching (fluorescence) , photoluminescence , chemistry , solubility , exponential decay , kinetics , photochemistry , molecule , luminescence , polymer chemistry , fluorescence , analytical chemistry (journal) , materials science , organic chemistry , physics , optics , optoelectronics , quantum mechanics , nuclear physics

A new water‐insoluble polysiloxane containing pendant Ru(bpy) 3 2+(bpy = 2,2′‐bipyridine) was studied with respect to the photoluminescence and its quenching by dioxygen. The emission was quenched by O 2 in water more efficiently than in gas phase, and the Stern‐Volmer plots showed a downward deviating curve. To determine which of several quenching models can be applied to the present system, the emission decays under various O 2 concentration were measured, and analyzed by a double exponential decay. From the simulations of the decay using the kinetic parameters obtained from the model analysis, it has been concluded that the quenching by O 2 is caused by static quenching (model 4). The O 2 concentration in the film in contact with water estimated from the quenching parameters was much higher than the solubility of O 2 estimated from the solubility coefficient in a dry film. These results suggest specific affinity of the polysiloxane for O 2 molecule in water.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research