Directing Self‐Assembly of Nanoscopic Cylindrical Diblock Brush Terpolymers into Films with Desired Spatial Orientations: Expansion of Chemical Composition Scope

Abstract

Diblock brush terpolymers (DBTs) with different fluorinated methacrylate-based block segments are synthesized through sequential ring-opening metathesis polymerizations and are used to prepare polymer thin films with predictable film thicknesses. These DBTs exhibit preferable substrate vertical alignments within the films, induced by the relatively lower surface energy of the fluorinated structural components, together with the overall cylindrical morphology of the brush architecture.

Nanodomain analysis with cluster‐SIMS: application to the characterization of macromolecular brush architecture

“…Pairs of fluorine‐related ions F − , CF 3 − , C 2 F 6 CHO − , and C 2 F 6 OC 5 H 9 O − at m/z 19, 69, 167, and 239 were chosen to calculate the fluorine fractional surface coverage K (%) for the thin films using Eqns . The fluorine surface coverages of DBT and HB films were ~88% and ~93%, respectively, which was in agreement with previous studies . This result indicates virtually complete surface coverage of fluorinated components, as designed.…”

“…This ratio (Φ) can be calculated as follows: where Y A and Y R are the SI yields of the detected ions from analyte and reference, respectively. The F − ratio for DBT films was 50%, which is comparable to a previous X‐ray photoelectron spectroscopy result with similar components . However, the ratios for larger fluorine molecular ions (CF 3 − , C 2 F 6 CHO − , and C 2 F 6 OC 5 H 9 O − ) were substantially lower than that of the F − ion.…”

Advanced photoresist technologies by intricate molecular brush architectures: Diblock brush terpolymer‐based positive‐tone photoresist materials

“…The RAFT polymerization of 1,1,1‐trifluoro‐2‐(trifluoromethyl)−2‐hydroxy‐4‐methyl‐5‐pentyl methacrylate (BTFHMBMA) was used to synthesize the fluorinated macromonomers 3 and 4 ( M3 , NB‐PBTFHMBMA 17 and M4 , NB‐PBTFHMBMA 19 ). The preparation and characterization of these macromonomers are reported elsewhere …”

The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2014

“…[290], polylactate groups [291,292,293], polypeptide chains [294], polyacrylate or substituted polystyrene chains [295], nitroxide groups [296], fluorescent groups [297], a perfluorooctyl group [298], perfluorocarboxylic acid groups [299], and a fullerene-carbene adduct [300]; (2) norbornene in the presence of Fe 3 O 4 nanoparticles [301]; (3) norbornenes in the presence of an allylated lanthanide salen complex [302]; (4) norbornyl-acac-like systems complexed to terbium [303] or to an iridium-pyrazolone complex (e.g. 71) [304];…”