Photoinitiator ITX (2-, or 4-Isopropylthioxanthone) for Solid-State & Gel Polymer Electrolytes (GPEs), 50-200 g/bottle, CSSGPEPIITX
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ITX (2-Isopropylthioxanthone) (C16H14OS) is a high-efficiency Norrish Type II photoinitiator and photosensitizer of the thioxanthone family. In advanced battery research, ITX is utilized to sensitize Gel Polymer Electrolytes (GPEs) and solid-state polymer electrolytes, enabling deep-section UV-curing and efficient photon absorption when paired with hydrogen donors or amine synergists.
Its main features are: (1) Type II Photochemical Mechanism: Unlike Type I initiators that undergo unimolecular cleavage, ITX absorbs near-UV light to enter an excited triplet state, subsequently abstracting a hydrogen atom from a co-initiator (such as an amine synergist) to generate active initiating free radicals via a bimolecular pathway. (2) Extended UV-A Absorption Maxima: Features strong absorption bands spanning the near-UV and violet spectrum (with maxima at approximately 259 nm and 383 nm), making it highly responsive to modern UV-A LED curing sources. (3) Photosensitization Capability: Acts as an optical antenna that transfers energy or abstracts hydrogens to boost the reactivity of sluggish co-initiators or extend curing depth through pigmented or highly scattering separator matrices. (4) Solubility: Supplied as a light-yellow crystalline powder with excellent solubility in aprotic carbonate solvents (EC/DEC/DMC/PC) and liquid monomer blends.
| Part Number |
CSSGPEPIITX (C-SSGPE-PIITX) |
| CAS |
5495-84-1 & 83846-86-0 (mixture of 2- and 4-Isopropylthioxanthone) |
| Chemical Formula |
C₁₆H₁₄OS  |
| Molecular Weight |
254.3 g/mol |
| Appearance |
Slight yellow powder |
| Melt Point |
60-67 ℃ |
| Absorption Wavelength |
255 nm and 384 nm (in methanol solution) |
| Package Size | 50 g, 100 g, and 200 g/bottle |
Notes: Please try to store the photoinitiator ITX power or solution in a dry place and dark place.
References:
- Z. Chen, et al. Ultraviolet In Situ Polymerized Binders with Polysulfide-Trapping Properties for Long-Cycle-Life Lithium–Sulfur Batteries, Macro-Molecular Rapid Communications, 2022, 43, 2200327
- S. A. H. Moradi, et al. Impact of lithium ion substitution in nano-clay on the electrochemical performance of PMMA gel polymer electrolytes in lithium-ion batteries, Journal of Molecular Liquids, 2025, 435, 128189