Photolithographic properties of ultrathin polymer Langmuir–Blodgett films containing anthracene moieties

Abstract

This study investigated the unique photolithographic properties of poly(N-neopentyl methacrylamide-co-9anthrylmethyl methacrylate) (p(nPMA-AMMA)) ultrathin films prepared by the Langmuir-Blodgett (LB) technique. The copolymer forms a stable monolayer on a water surface and LB films with any desired number of layers. The nPMA group in the LB film acts as a photodecomposition group under irradiation at 254 nm. On the other hand, photodimerization occurred between anthracene groups under irradiation at 365 nm. Consequently, positive-tone and negative-tone patterns were printed on a silicon wafer by choosing a suitable irradiation light wavelength. Etching resistance of p(nPMA-AMMA) LB films was also investigated in a nanometer regime permitting etching of gold or copper films.

Cost‐Effective Polymethacrylate‐Based Electrospun Fluorescent Fibers toward Ammonia Sensing

“…Anthracene is a well‐known fluorescent molecule with highly interesting photophysical properties . The covalent anchoring of this fluorophore onto polymer chains has led to the development of fluorescent polymers that were further used in the construction of optoelectronic devices, photoluminescent films, and photoresists . We have previously reported on the synthesis of well‐defined methacrylate‐based homopolymers and block copolymers containing anthracene side‐chains functionalities.…”

Synthesis of Activated Ester Functional Polyesters through Light‐Induced [4+4] Cycloaddition Polymerization

“…For instance, a variety of organo-and hydrogels, organic materials for rewritable photopatterning, 3D optical memory devices, and shape memory polymers have been exploited by taking the advantage of anthracene photodimerization. [5][6][7][8][9][10][11][12][13][14][15] Besides the abovementioned photoswitching ability, the anthracene has another unique feature which abilities have been prepared by employing the activated ester substitution reactions. [33][34][35][36][37][38][39][40] It is well known that preparing a polymer under mild condition is always desirable.…”

Luminescence Properties of Platinum Porphyrin Embedded in Multilayered Polymer Nanosheets

“…The monolayer is easily transferable on solid supports as Y-type LB films over 700 layers. [2] A diverse range of molecules have been successfully incorporated in ultrathin polymer films at the monolayer level: e.g., organometallic complexes, [3] aromatic hydrocarbons, [4][5][6] redox active groups, [7,8] thermosensitive groups, [9] nonlinear optical active groups, [10][11][12] ferroelectric polymers, [13] and polyhedral oligomeric silsesquioxane. [14,15] The ultrathin polymer films act as a nanoruler manipulating nanomaterials systematically with nanoscale precision.…”