Triphenylgermanium hydride

• CAS: 2816-43-5
• Catalog Number: ALC-FP-2816435
• Category: Featured Products
• Molecular Weight: 304.96 g/mol
• Molecular Formula: C18H16Ge
• Appearance: White to Off-White Powder or Solidor Crystals
• C: 68.8 - 73.0 %
• Sample Lot No.: A24C814P

Case Study

Triphenylgermanium Hydride for Photoinitiated Polymerization of Dental Methacrylate Resins

Bouzrati-Zerelli M, et al. Dental Materials, 2016, 32(10), 1226-1234.

Triphenylgermanium hydride (Ph₃GeH) was evaluated as a key component of a novel amine-free photoinitiating system (PIS) for the polymerization of dental methacrylate resins. Bis-GMA/TEGDMA (70/30 w/w) and UDMA resins were exposed to a 477 nm dental blue LED in thin (20 μm) and thick (1.4 mm) formats. Photopolymerization kinetics were monitored by FTIR and DSC, while ESR spectroscopy and steady-state photolysis confirmed germyl radical formation. The Ph₃GeH-based PIS exhibited superior polymerization efficiency and bleaching compared to conventional CQ/amine systems, with a direct correlation between Ph₃GeH content and color stability. Mechanistic insights clarified the excited-state processes driving radical initiation, highlighting the experimental potential of Ph₃GeH in high-performance dental formulations.