17088-22-1Relevant articles and documents
Binding Sites of Pyrene and Related Compounds and Chiral Excimer Formation in the Cavities of Cyclodextrins and Branched Cyclodextrins
Kano, Koji,Matsumoto, Hitoshi,Yoshimura, Yoshimichi,Hashimoto, Shizunobu
, p. 204 - 209 (1988)
Circular dicroism (CD) and circularly polarized fluorescence (CPF) spectra reveal the formation of the intermolecular dimer of pyrene having left-handed chirality and intramolecular dimers of 1,3-dinaphtylpropanes having right-handed chiralities in the γ-cyclodextrin cavity.These guest molecules are estimated to be bound to the relatively hydrophobic primary hydroxyl group side of the γ-cyclodextrin cavity, while the more hydrophilic secondary hydroxyl group side is the binding site of the chiral pyrene dimer in the 6-O-α-maltosyl-γ-cyclodextrin cavity because the narrower side of the cavity is capped by the maltosyl group.The pyrene dimer in the branched γ-cyclodextrin exhibits right-handed chirality.
Pyrene-derived novel one- and two-component organogelators
Babu,Sangeetha,Vijaykumar,Maitra, Uday,Rissanen, Kari,Raju
, p. 1922 - 1932 (2007/10/03)
A new class of alkyl-chainappended pyrene derivatives 4 - 14 were synthesized and evaluated for their gelation abilities. Depending on the nature of the linking group, these compounds gelated a number of organic solvents, either in the presence or in the absence of the acceptor molecule 2,4,7-trinitrofluorenone (TNF). Compounds with ester, ether, or alkyl linkages gelated a number of hydroxylic and hydrocarbon solvents by means of a charge-transfer interaction with TNF, while compounds with amide, urethane and urea linkers formed gels on their own in a variety of solvents by means of π-π stacking and hydrogen-bonding interactions. The X-ray crystal structure of urethane (S)-12 showed hydrogen-bonding and stacking features, as suggested by the model. The gels obtained were investigated by spectroscopic and electron microscopic techniques which provided structural insights.