Premium
Synthesis and Characterization of Low‐Functional Nitrated and Aminated Octa(Phenyl) Silsesquioxane
Author(s) -
Wu Yiwei,
Liu Leichun,
Yang Rongjie,
Zhang Wenchao
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201900272
Subject(s) - silsesquioxane , nitration , chemistry , gel permeation chromatography , thermal stability , fourier transform infrared spectroscopy , chemical structure , polymer chemistry , infrared spectroscopy , chemical stability , nuclear magnetic resonance spectroscopy , polymer , nuclear chemistry , organic chemistry , chemical engineering , engineering
Nitrated octa(phenyl)silsesquioxane (NO 2 ‐OPS) with different functional groups was prepared from octa(phenyl)silsesquioxane. The number of nitro functional groups was controlled by adjusting the nitration‐reaction conditions. The chemical structure of the NO 2 ‐OPS was characterized by Fourier‐transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, elemental analysis and gel‐permeation chromatography. The functionalities of the NO 2 ‐OPS can be controlled between two and eight. The laws of the reaction conditions that affect the functionality were determined by studying the nitration mechanism. Low‐functional aminated octa(phenyl)silsesquioxane (NH 2 ‐OPS) was synthesized by an active hydrogen‐transfer reduction reaction and the chemical structure of the functionalities was maintained. The chemical structure of the NH 2 ‐OPS was characterized by 1 H nuclear magnetic resonance spectroscopy, X‐ray diffractometry and ultra‐performance liquid chromatography, and the thermal stability of the products with different functionalities was examined. The low‐functionality NH 2 ‐OPS has a concentrated molecular‐weight distribution and an excellent thermal stability, which provide good potential for its application in polymers.