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

Aryldiphenylarsines, diarylphenylarsines, and triarylarsines were synthesized by practical methods to utilize the heavy atom effect for phosphorescence. 1‐Naphthyl, 2‐naphthyl, 9‐phenanthryl, and 1‐pyrenyl groups were introduced in the present work. The obtained arene‐substituted arsines showed phosphorescence in solutions at 77 K. On the other hand, 1‐pyrenyl‐substituted arsines showed only fluorescence in the solid states at 77 K, whereas the others exhibited phosphorescence. In addition, oxidation of the arsenic atom promoted fluorescence instead of phosphorescence. X‐ray crystallography and computational calculations were conducted to understand the luminescence behaviors of the arene‐substituted arsines.

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1,2‐Bis(triazolyl)tetraphenyldigermanes: Synthesis, Structure and Properties

Zaitsev,

Veshchitsky,

Oprunenko

et al. 2023

Chemistry An Asian Journal

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Using the [3+2] cycloaddition reaction of [HC≡C‐GePh2‐]2 (1) and a number of RCH2N3, this work described the synthesis of a series of novel heterocyclic digermanes, bitriazoles [1,4‐C2HN3(CH2R)GePh2‐]2, 2‐12 (R = Ph, p‐Tol, p‐C6H4NMe2, p‐C6H4OMe, p‐C6H4Br, m‐C6H4NO2, 2‐Naphth, CH2‐p‐OC6H4CHO, CH2‐p‐OC6H4COOMe, CH2P(O)(OEt)2, COOEt), difficult to produce by other methods. The structural peculiarities of these compounds were studied in detail by NMR spectroscopy and by XRD analysis (for 6, 9 and 10). The properties of 1‐12 were studied by UV/vis and luminescence emission spectroscopy, electrochemistry and DFT calculations, indicating an effective conjugation in their molecules.

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

Cited by 14 publications

References 45 publications

Germanium and Tin in Conjugated Organic Materials

Germanium and Tin in Conjugated Organic Materials

Practical Syntheses and Luminescent Properties of Arene‐substituted Arsines

1,2‐Bis(triazolyl)tetraphenyldigermanes: Synthesis, Structure and Properties

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