24599-26-6Relevant articles and documents
Multiple-phase behavior and its microscopic implication for 4-acrylamidosalicylic acid gel
Annaka, Masahiko,Shibayama, Mitsuhiro,Ikkai, Fumiyoshi,Sugiyama, Masaaki,Hara, Kazuhiro,Nakahira, Takayuki,Tanaka, Toyoichi
, p. 6906 - 6912 (2001)
The microscopic structure of PASA gel was studied by means of small-angle neutron scattering (SANS) to elucidate the nature of the multiple phases. The gel exhibited not only multiple phases characterized by different degrees of swelling but also a marked
The gel that memorizes phases
Annaka, Masahiko,Tokita, Masayuki,Tanaka, Toyoichi,Tanaka, Shimei,Nakahira, Takayuki
, p. 471 - 477 (2000)
A poly(4-acrylamidosalicylic acid) gel exhibits multiple phases as characterized by distinct degrees of swelling; the gel can take one of four different swelling values, but none of the intermediate values. The multiple phase behavior appears as a result of the combination of hydrogen bonding and hydrophobic interaction between polymer segments. The gel has remarkable memory: The phase behavior of the gel depends on whether the gel has experienced the most swollen phase or the most collapsed phase in the immediate past. The information is stored and reversibly erased in the form of a macroscopic phase transition behavior. These phenomena are explained by a mean field theory where the number of hydrogen bonds is added to the equation of the state of a gel.
Polymer complexes. LX. Supramolecular coordination and structures of N(4-(acrylamido)-2-hydroxybenzoic acid) polymer complexes
Ghoneim,El-Sonbati,El-Bindary,Diab,Serag
, p. 111 - 131 (2015/08/06)
A number of novel polymer complexes of various anions of copper(II), cobalt(II), nickel(II) and uranyl(II) with N(4-(acrylamido)-2-hydroxy benzoic acid) (ABH) have been synthesized and characterized by elemental analysis, IR, 1H NMR, magnetic susceptibility measurements, electronic spin resonance, vibrational spectra and thermal analysis. The molecular structures of the ligand are optimized theoretically and the quantum chemical parameters are calculated. Tentative structures for the polymeric metal complexes due to their potential application are also suggested. The IR data exhibit the coordination of ONO2/OAc/SO4 with the metal ions in the polymeric metal complex. Vibrational spectra indicate coordination of carboxylate oxygen and phenolic OH of the ligand giving a MO4 square planar chromophore. Ligand field ESR spectra support square planar geometry around Cu(II). The thermal decomposition of the polymer complexes were discussed in relation to structure, and the thermodynamic parameters of the decomposition stages were evaluated applying Coast-Redfern and Horowitz-Metzger methods.
Acryloylamino-salicylanilides as EGFR PTK inhibitors
Deng, Wei,Guo, Zongru,Guo, Yanshen,Feng, Zhiqiang,Jiang, Yi,Chu, Fengming
, p. 469 - 472 (2007/10/03)
A series of acryloylamino-salicylanilides were synthesized as inhibitors of EGFR PTK. A strategy of pseudo six-membered ring formed through intramolecular hydrogen bonding in salicylanilides is employed to mimic the planar pyrimidine ring of quinazoline E
