76656-52-5Relevant articles and documents
Synthesis and property studies of linear and kinked poly(pyreneethynylene)s
Gupta, Jhinuk,Vadukumpully, Sajini,Valiyaveettil, Suresh
scheme or table, p. 5078 - 5086 (2011/11/28)
A series of fluorescent conjugated polymers, poly(pyreneethynylene)s, have been designed and synthesized to investigate the effect of shape of polymer backbone on physical properties. Polymers with linear and kinked backbone were synthesized using 1,6- and 1,8-disubstituted pyrene. The target copolymers were designed to incorporate various spacer units, such as, alkoxyphenyl, carbazole and fluorene on the polymer backbone. Characterization of the target compounds was achieved by NMR, IR, GPC and MALDI-TOF mass spectrometry. Detailed investigation on their optical, electrochemical and thermal properties revealed significant contribution of the geometry of polymer backbone towards physical properties. Kinked backbone of cisoid-polymers was found to result in lower optical band gap, less negative EHOMO and higher thermal stability as compared to their linear analogues, most probably due to the coiling of polymer chains. Comparison of the physical properties of the polymers with those of the model compounds suggested similar extent of conjugation through 1,6- and 1,8-position of pyrene.
Supramolecular helix of an amphiphilic pyrene derivative induced by chiral tryptophan through electrostatic interactions
Xiao, Jinchong,Xu, Jialiang,Cui, Shuang,Liu, Huibiao,Wang, Shu,Li, Yuliang
, p. 645 - 648 (2008/04/12)
An amphophilic pyrene derivative (PyDNH3) bearing positively charged ammonium cations has been synthesized and characterized. Self-assembly of PyDNH3 in the presence of chiral tryptophan derivatives was investigated in ethanol/water by optical and chiroptical spectra, indicating the formation of helical aggregates. Scanning electron microscope (SEM) images showed the formation of ring-shape structures.
Synthesis and Molecular Recognition of Pyrenophanes with Polycationic or Amphiphilic Functionalities: Artificial Plate-Shaped Cavitant Incorporating Arenes and Nucleotides in Water
Abe, Hajime,Mawatari, Yosuke,Teraoka, Haruna,Fujimoto, Kazuhisa,Inouye, Masahiko
, p. 495 - 504 (2007/10/03)
Water-soluble pyrenophanes possessing polycationic or amphiphilic side chains have been developed as synthetic host molecules to investigate hydrophobic and/or π-stacking interactions. By utilizing ω-acetalic alkyl side chains to retain solubility and ver