Photoinitiator 819DW {Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide} for Solid-State & Gel Polymer Electrolytes (GPEs), 50-200 g/bottle, CSSGPEPI819DW
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Photoinitiator 819DW is a specialized, ready-to-use aqueous dispersion (typically containing ~45% active ingredient) of Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide (BAPO / Irgacure 819). In advanced battery materials research, 819DW is utilized for the UV-curing of water-borne, aqueous Gel Polymer Electrolytes (GPEs) and hydrogel systems (such as those used in aqueous zinc-ion or sodium-ion energy storage devices). It bridges the high-performance deep-curing efficiency of standard BAPO with complete compatibility in water-rich or aqueous-processable electrolyte formulations.
Its main features are: (1) Aqueous Dispersion Form: Unlike neat BAPO powder—which is hydrophobic and requires organic co-solvents to disperse evenly in water-based mixtures—819DW is formulated as a stable liquid emulsion. This allows seamless incorporation into aqueous polymer precursors without phase separation or agglomeration. (2) Bisacylphosphine Oxide Chemistry: Retains the symmetrical core structure of BAPO, undergoing unimolecular $\alpha$-cleavage upon light absorption to generate four active radicals per molecule (two benzoyl and two phosphonyl radicals), yielding exceptionally high initiation efficiency. (3) Long-Wavelength UV/Violet Absorption: Absorbs strongly across the near-UV and violet spectrum (370 nm to 420 nm). This enables efficient photopolymerization through thick separator matrices, glass fiber papers, and water-swollen hydrogel layers. (4) Compatibility with Water-Borne Polymers: Engineered specifically for aqueous media, making it ideal for hydrophilic binders, natural biopolymers, and water-soluble synthetic macromers.
| Part Number |
CSSGPEPI819DW (C-SSGPE-PI819DW) |
| CAS |
162881-26-7 |
| Chemical Formula |
C₂₆H₂₇O₃P  |
| Appearance |
Milky White Solution |
| Solid Content |
45 wt% in water |
| Density |
1.1 g/mL |
| Absorption Wavelength |
245, 280, 331, 379 nm (in methanol solution) |
| Package Size | 50 g, 100 g, and 200 g/bottle |
Notes: Please try to store the photoinitiator 819DW solution in a dry place and dark place.
References:
- T. Hu, et al. Single-ionic conductive quasi-solid-state electrolyte membranes based on nematic liquid crystal polymer network, Journal of Energy Storage, 2026, 149, 120272
- H. Peng, et al. Control the single-ion conductivity by tuning smectic liquid crystal polymer network for quasi-solid-state electrolytes, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2025, 727, 138396.