New Polyoxometalates Containing Hybrid Polymers and Their Potential for Nano‐Patterning |
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Authors: | Dr Vishwanath Kalyani Dr V S V Satyanarayana Dr Vikram Singh Dr Chullikkattil P Pradeep Dr Subrata Ghosh Dr Satinder K Sharma Prof Kenneth E Gonsalves |
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Institution: | 1. School of Basic Sciences, Indian Institute of Technology Mandi, Mandi 175 001, Himachal Pradesh (India);2. School of Computing and Electrical Engineering, Indian Institute of Technology Mandi, Mandi 175001, Himachal Pradesh (India) |
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Abstract: | Two new polyoxometalate (POM)‐based hybrid monomers (Bu4N)5(H)P2V3W15O59{(OCH2)3CNHCO(CH3)C?CH2}] ( 2 ) and (S(CH3)2C6H4OCOC(CH3)=CH2)6PVMo10O40] ( 5 ) were developed by grafting polymerizable organic units covalently or electrostatically onto Wells–Dawson and Keggin‐type clusters and were characterized by analytical and spectroscopic techniques including ESI‐MS and/or single‐crystal X‐ray diffraction analyses. Radical initiated polymerization of 2 and 5 with organic monomers (methacryloyloxy)phenyldimethylsulfonium triflate (MAPDST) and/or methylmethacrylate (MMA) yielded a new series of POM/polymer hybrids that were characterized by 1H, 31P NMR and IR spectroscopic techniques, gel‐permeation chromatography as well as thermal analyses. Preliminary tests were conducted on these POM/polymer hybrids to evaluate their properties as photoresists using electron beam (E‐beam)/extreme ultraviolet (EUV) lithographic techniques. It was observed that the POM/polymer hybrid of 2 with MAPDST exhibited improved sensitivity under EUV lithographic conditions in comparison to the MAPDST homopolymer resist possibly due to the efficient photon harvesting by the POM clusters from the EUV source. |
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Keywords: | cluster compounds NMR spectroscopy organic– inorganic hybrid composites polymers polyoxometalates |
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