Fluorescence and phosphorescence study of germanium–acetylene polymers and germa[N]pericyclynes

Synthesis and optical properties of skipped polyynes comprising germanium–acetylene units are presented. The prepared germanium polymers were investigated by UV-vis, fluorescence, and phosphorescence spectroscopy and DFT calculations. The optical properties were compared to those of cyclic compounds, germa[N]pericyclynes. The unique fluorescence and phosphorescence behaviours of acyclic polymers were observed.

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