2-Methyladamantan-2-yl acrylate
2-Methyladamantan-2-yl acrylate, identified by CAS 249562-06-9, is a high-performance specialty monomer characterized by its bulky, rigid adamantane cage structure. This alicyclic acrylate is prized in advanced material science for its ability to impart exceptional thermal stability and mechanical strength to resulting polymers. The presence of the adamantyl group provides a high carbon-to-hydrogen ratio, which is a critical factor in enhancing the plasma etch resistance of thin films.
In terms of chemical behavior, this monomer features a tertiary ester linkage that is susceptible to acid-catalyzed deprotection. This specific functionality makes it a cornerstone component in the development of chemically amplified resist (CAR) systems. Handling requires standard laboratory precautions for acrylates, including protection from light and heat to prevent premature polymerization, ensuring the material maintains its high purity for sensitive electronic applications.
• The primary application of 2-Methyladamantan-2-yl acrylate is in the formulation of photoresists for deep ultraviolet (DUV) and extreme ultraviolet (EUV) lithography. Its bulky adamantyl moiety significantly improves the dry-etch resistance of the polymer matrix, which is essential for maintaining pattern integrity during the high-energy plasma etching processes used in semiconductor manufacturing.
• It serves as a functional monomer in chemically amplified resists (CARs) due to its acid-labile tertiary ester group. When exposed to a photo-generated acid, the ester bond cleaves, transforming the hydrophobic polymer into a hydrophilic, alkali-soluble form. This solubility switch allows for the precise development of high-resolution nanopatterns required for modern integrated circuits.
• Beyond electronics, this monomer is utilized in the synthesis of specialty copolymers where high glass transition temperatures (Tg) and low optical density are required. The rigid cage structure of the adamantane group restricts molecular motion within the polymer chain, resulting in materials that exhibit superior dimensional stability and heat resistance compared to conventional aliphatic acrylates.
• It is also employed in research concerning advanced optical coatings and transparent materials. Its unique combination of high refractive index and low shrinkage during polymerization makes it a candidate for high-precision optical components and protective layers that must withstand harsh environmental conditions without degrading or losing clarity.
Product Name: 2-Methyladamantan-2-yl acrylate
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