Premium
Further Understanding of the Reactivity Control of Bisphosphonates to a Metal Source for Fabricating Highly Ordered Mesoporous Films
Author(s) -
Wakabayashi Ryutaro,
Kimura Tatsuo
Publication year - 2019
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201900250
Subject(s) - reactivity (psychology) , mesoporous material , molecule , materials science , mesoporous organosilica , metal , amide , combinatorial chemistry , chemistry , nanotechnology , organic chemistry , catalysis , mesoporous silica , medicine , alternative medicine , pathology
Mesoporous metal organophosphonates having embedded organic functions are a promising platform to hybridize organics and non‐siliceous inorganic frameworks in their molecular scale. However, the reactivity between a bisphosphonate and a metal source is dramatically different for their combination and then hampers to construct ordered mesoporous structures even when using amphiphilic organic molecules. By proposing an advanced method to adjust such reactivity, we recently succeeded in fabricating ordered mesoporous aluminum organophosphonate (AOP) films with chemically designable benzene units inside their hybrid frameworks. The reactivity of the organically bridged bisphosphonates has been controlled by utilizing dissimilar reactivities of acid–base pairs like P−OH and P−OEt groups to AlCl 3 . Here, we further prove our reactivity‐control concept through the introduction of organic groups, such as those having symmetric thiophene, asymmetric amide, and hydrophilic ether units. Liquid‐state 31 P NMR measurements further clarified the usefulness of the control of the −OH/ −OEt ratio in the same bisphosphonate molecules for obtaining highly ordered mesostructured AOP films.