Much of the work in the area of detecting molecular oxygen (O2) through luminescence quenching has focused on the use of emissive transition metal complexes embedded into host matrices.  These support materials often complicate the sensing response and lead to an increased likelihood of device degradation.  We have characterized, by several photophysical methods and x-ray crystallography, a series of luminescent, microcrystalline copper(I) complexes capable of detecting oxygen without the use of a host matrix.  The stability of these complexes to different intensities of excitation source light and a variety of oxygen concentrations was monitored by changes in both emission intensity and sensitivity toward oxygen.  These changes can be interpreted with several photodegradation models.   One particular complex shows promise for use in oxygen sensing devices due to the long term stability of the Ksv parameter and the inexpensive materials used in the synthesis.

Stability of selected copper(I) complexes for use in oxygen sensing applications

243rd National Meeting (2012)

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