Solvatochromism of Heteroaromatic Compounds: XXVI. Solvent Effect on the Solvatochromic Parameters of IR Bands of N-Methylanilines and Related Hydrogen Bond Donors
Nonlinear optical polymer composition and method for producing the same
申请人:SUMITOMO ELECTRIC INDUSTRIES, LTD.
公开号:EP0406888A2
公开(公告)日:1991-01-09
A nonlinear optical polymer composition which comprises a polymer matrix comprising a thermosetting resin and a nonlinear optical compound molecules of which are poled in the polymer matrix in a dispersed state or in a solid solution state, which has improved stability and durability.
Solvatochromism of Heteroaromatic Compounds: XXVI. Solvent Effect on the Solvatochromic Parameters of IR Bands of N-Methylanilines and Related Hydrogen Bond Donors
作者:A. I. Vokin、L. P. Oznobikhina、A. M. Shulunova、M. V. Ustinov、G. V. Bozhenkov、G. G. Levkovskaya、V. K. Turchaninov
DOI:10.1007/s11176-005-0280-4
日期:2005.4
Formation of a hydrogen bond between molecules of a proton donor (phenol, pyrrole, N-methylanilines) and a solvent decreases the sensitivity of the XH stretching frequency to the polarity/polarizability of solvents. A change in the bond configuration in the amine moiety of N-methylaniline and related compounds upon formation of a solvation H complex is manifested in that the absolute terms of the solvatochromic equations for inert and protophilic media are different. The spectroscopic effect from the geometric reorganization of molecules is determined by their structure and the capability to act as hydrogen bond donors. Multicentered hydrogen bond with π bases affects the geometry of the amine fragment of N-substituted anilines to a lesser extent than does two-centered H bond with onium bases.