New symmetrical and unsymmetrical near‐infrared absorbing ketocyanine‐type dyes are synthesized and their optical characterization is done. The relationships between their structure and optical properties are discussed. The synthesized ketocyanine dyes show a positive solvatochromism and are poorly fluorescent. A new procedure for the preparation of N ,N ,N ′,N ′‐ tetramethylvinamidinium perchlorate
Quast, Helmut; Seidenspinner, Hubert-Matthias; Stawitz, Josef, Liebigs Annalen der Chemie, 1983, # 7, p. 1230 - 1236
作者:Quast, Helmut、Seidenspinner, Hubert-Matthias、Stawitz, Josef
DOI:——
日期:——
Films of polyamides with phenylpyridine units in the backbone
作者:I. V. Gofman、M. Ya. Goikhman、I. V. Podeshvo、E. E. Eliseeva、E. E. Bol’bat、I. V. Abalov、A. V. Yakimanskii
DOI:10.1134/s107042721010023x
日期:2010.10
New polyamides derived from 2-(4-aminophenyl)-5-aminopyridine, 4,4-diaminodiphenyl ether, and 4,4'-terephthaloyloxybis(3-methoxybenzoic) acid dichloride were prepared. These polyamides are of interest as macromolecular ligands. The deformation-strength, thermomechanical, and thermal properties of films of polyamides with various content of phenylpyridine fragments were studied.
QUAST, H.;SEIDENSPINNER, H. -M.;STAWITZ, J., LIEBIGS ANN. CHEM., 1983, N 7, 1230-1236