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Physicochemical Nature of Perfluoroalkyl Compounds Induced by Fluorine
Author(s) -
Hasegawa Takeshi
Publication year - 2017
Publication title -
the chemical record
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.61
H-Index - 78
eISSN - 1528-0691
pISSN - 1527-8999
DOI - 10.1002/tcr.201700018
Subject(s) - fluorine , hydrocarbon , chemistry , carbon fibers , dipole , organic chemistry , computational chemistry , polymer science , chemical physics , materials science , composite material , composite number
Perfluoroalkyl (R f ) compounds have unique characters represented by a significantly high hydrophobic property, which often makes us consider that R f groups should be interacted with each other via the ‘hydrophobic interaction’ as found for a normal hydrocarbon. Due to a similar intuitive and simplistic speculation, the R f ‐specific material properties have long been enveloped in darkness for comprehensive understanding, which should lucidly be discussed within a framework of physical chemistry. Here, we show studies on the stratified dipole arrays (SDA) theory, which readily explains the R f ‐specific material characters in a comprehensive manner based on only a few fundamental physical parameters of fluorine. The SDA theory encompasses some conventional theories that account for only a part of material properties. In addition, we show that the concept of vibrational spectroscopy of R f compounds should also be revised, since the mass of fluorine is larger than that of carbon, which is opposite to the hydrocarbon case. In this manner, chemistry of R f compounds needs another fully revised concept, which cannot be replaced by an extended concept of normal hydrocarbon compounds.