{"product_id":"cssgpepi819dw","title":"Photoinitiator 819DW {Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide} for Solid-State \u0026 Gel Polymer Electrolytes (GPEs), 50-200 g\/bottle, CSSGPEPI819DW","description":"\u003cp\u003ePhotoinitiator 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.\u003c\/p\u003e\n\u003cp\u003eIts main features are: (1) \u003cstrong\u003eAqueous Dispersion Form\u003c\/strong\u003e: 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) \u003cstrong\u003eBisacylphosphine Oxide Chemistry\u003c\/strong\u003e: 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) \u003cstrong\u003eLong-Wavelength UV\/Violet Absorption\u003c\/strong\u003e: 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) \u003cstrong\u003eCompatibility with Water-Borne Polymers\u003c\/strong\u003e: Engineered specifically for aqueous media, making it ideal for hydrophilic binders, natural biopolymers, and water-soluble synthetic macromers.  \u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003eIts main functional roles in GPEs synthesis are: (1) \u003cstrong\u003eRapid In Situ Curing of Aqueous \u0026amp; Hydrogel GPEs\u003c\/strong\u003e: Enables the fast room-temperature solidification of aqueous monomer\/polymer precursor solutions (such as polyacrylamide, polyvinyl alcohol [PVA], or gelatin-methacryloyl [GelMA] matrices plasticized with concentrated aqueous salts like Zn(OTf)2 orLiTFSI) directly inside sealed cells. (2) \u003cstrong\u003eDeep-Section Curing in Porous Separators\u003c\/strong\u003e: Because 819DW absorbs at longer, highly penetrating wavelengths, it successfully initiates radical crosslinking deep within thick separator membranes or high-surface-area electrode pores where shorter UV wavelengths would be filtered out or scattered by water and ionic species. (3) \u003cstrong\u003eElimination of Organic Solvents\u003c\/strong\u003e: Facilitates completely green, water-based battery manufacturing workflows, avoiding volatile organic compounds (VOCs) while maintaining robust, ionically conductive 3D gel networks (\u0026gt;10^{-3} S\/cm).\u003c\/div\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ctable style=\"width: 100%; height: 492.238px;\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 28.0702%; height: 35.6px;\"\u003e\u003cem\u003ePart Number\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.6374%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eCSSGPEPI819DW (C-SSGPE-PI819DW)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 28.0702%; height: 35.6px;\"\u003e\u003cem\u003eCAS\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.6374%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e162881-26-7\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 216px;\"\u003e\n\u003ctd style=\"width: 28.0702%; height: 216px;\"\u003e\u003cem\u003eChemical Formula\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.6374%; height: 216px;\"\u003e\n\u003cp\u003eC₂₆H₂₇O₃P\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CSSGPEPI819DW_structure_160x160.jpg?v=1793514250\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 28.0702%; height: 35.6px;\"\u003e\u003cem\u003eAppearance\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.6374%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eMilky White Solution\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 28.0702%; height: 35.6px;\"\u003e\u003cem\u003eSolid Content\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.6374%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e45 wt% in water\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 36.6px;\"\u003e\n\u003ctd style=\"width: 28.0702%; height: 36.6px;\"\u003e\u003cem\u003eDensity\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.6374%; height: 36.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e1.1 g\/mL\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 28.0702%; height: 35.6px;\"\u003e\u003cem\u003eAbsorption Wavelength\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.6374%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e245, 280, 331, 379 nm (in methanol solution)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 26.0375px;\"\u003e\n\u003ctd style=\"width: 28.0702%; height: 26.0375px;\"\u003e\u003cem\u003ePackage Size\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.6374%; height: 26.0375px;\"\u003e50 g, 100 g, and 200 g\/bottle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eNotes\u003c\/strong\u003e: Please try to store the photoinitiator 819DW solution in a dry place and dark place.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eReferences\u003c\/strong\u003e: \u003c\/span\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S2352152X25049862\"\u003e\u003cspan\u003eT. 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\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S092777572502299X\"\u003e\u003cspan\u003eH. 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.\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"SHYCXC","offers":[{"title":"50 g","offer_id":67939105734886,"sku":"CSSGPEPI819DW50","price":99.0,"currency_code":"USD","in_stock":true},{"title":"100 g","offer_id":67939105767654,"sku":"CSSGPEPI819DW100","price":179.0,"currency_code":"USD","in_stock":true},{"title":"200 g","offer_id":67939105800422,"sku":"CSSGPEPI819DW200","price":239.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CSSGPEPI819DW_main.jpg?v=1793514250","url":"https:\/\/echemsupplies.com\/products\/cssgpepi819dw","provider":"EChem Supplies","version":"1.0","type":"link"}