Work

Synthesis, Characterization, and Polymerization of Ge- and Sn-Substituted [2.2]Paracyclophanes toward Poly(para-xylylene) Films and Their Mechanical Properties

Year: 2026

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide Polymers have had widespread applications in industry over the past few decades. Recently, polymers incorporating heavier group 14 elements (Ge, Sn, and Pb) have gained interest since their oxides are promising for semiconductor applications due to their high dielectric constants and charge mobility. Poly( p -xylylene) (PPX), an important class of polymer, is widely recognized for its transparency, biocompatibility, and the conformality afforded by its polymerization method, chemical vapor deposition (CVD). In this work, PPXs incorporating germanium or tin are prepared via CVD polymerization and the optimal pyrolysis temperatures of their precursors are determined. The ductility, thermal stability, crystallinity, surface topography, and comprehensive and surface chemical compositions are investigated. Sequential changes in the surface oxidation state are confirmed following exposure to air and subsequent oxygen plasma treatment. Comparison of the obtained PPXs with the widely applied chlorinated version PPX-Cl (trade name Parylene C) revealed preserved ductility while exhibiting distinct trends in softness.

Source: Inorganic Chemistry

DOI: 10.1021/acs.inorgchem.5c04945

Authors: Moena Hirao, Lukas Bichlmaier, Tetsuhiko F. Teshima, Rebecca Wilhelm, Shigeyoshi Inoue

Institutions: NTT (United States), Technical University of Munich

Language: English

Topic: Synthesis and characterization of novel inorganic/organometallic compounds

Subfield: Inorganic Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,500

Funder: NTT Research