Intermolecular interactions between sol–gel-derived random-structure oligomeric silsesquioxanes and a diazonaphthoquinone derivative

Autor:	Takuya Nishiyama, Kamogawa Masao, Hiromitsu Kozuka, Mitsuhito Suwa, Fujii Manami
Rok vydání:	2021
Předmět:	chemistry.chemical_compound Diazonaphthoquinone Physics and Astronomy (miscellaneous) chemistry Intermolecular force Polymer chemistry General Engineering General Physics and Astronomy Random structure Derivative (chemistry) Sol-gel
Zdroj:	Japanese Journal of Applied Physics. 60:051002
ISSN:	1347-4065 0021-4922
Popis:	Oligomeric silsesquioxanes (Oligo-SQs) with random structures featuring phenyl (Ph) groups or both Ph and methyl (Me) groups as their substituents were synthesized by the sol–gel method. The ratio of Ph and Me groups controlled the molecular weights and branching in the Oligo-SQs. Branching increased as the molecular weight increased (when the alkaline dissolution rates of all Oligo-SQs adjusted to ∼40 nm s−1). A diazonaphthoquinone (DNQ) derivative was added to the Oligo-SQs to impart positive photosensitivity. A Ph content ratio of over 50 mol% was found to be necessary for the Oligo-SQs to exhibit DNQ compatibility and good patterning performance. Infrared absorption spectroscopy analysis and density functional theory calculations indicated the formation of novel aromatic siloxane DNQ aggregates upon hydrogen bonding between hydroxyl group domains in the Oligo-SQ (formed by hydroxyl groups bonded to Si on adjacent Ph moieties) and the DNQ derivative, which adopts only one of its possible resonance structures.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fa99fdf529bf8389b34fbd0c47063b09 https://doi.org/10.35848/1347-4065/abf13c Zobrazit plný text záznamu