Adaptive Self‐Assembly Behavior Restrained by Supramolecular Crystallization and Molecular Recognition. Issue 8 (16th January 2017)

• Record Type: Journal Article
• Authors: Roy, Bappaditya; Noguchi, Takao; Yoshihara, Daisuke; Sakamoto, Junji; Yamamoto, Tatsuhiro; Shinkai, Seiji
• Is Part Of: Chemistry. Volume 23:Issue 8(2017)
• Page Start: 1937
• Page End: 1941
• Publication Date: 2017-01-16
• Subjects: adaptive -- amphiphiles -- crystallization -- multicomponent reactions -- nanoparticles -- supramolecular chemistry; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201604772
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: The control over supramolecular interactions and obtaining information beyond the molecular scale is an extended challenge. The intriguing self‐assembly of a perylene‐3, 4, 9, 10‐tetracarboxylic acid diimide (PDI)‐based novel bolaamphiphilic probe is experienced within an artificial environment that is restrained by using supramolecular crystallization and molecular recognition. The bolaamphiphile with a hydrophilic [18]‐azacrown ether ring produced nanoaggregates due to differing solubilities in organic and aqueous media. A structural evolution was observed in the presence of alkali metal ions as guests. The metal complexes form a pseudo‐cationic structure, which is further involved in an ionic self‐assembly with biomolecules, thus resulting new spectroscopic information on the dye self‐assembly. The overarching aim of this study is to emphasize the importance of the concept of supramolecular adaptability, which has been used to establish an environment‐friendly behavior based on noncovalent forces, thus leading to the evolution of new assembly structures and photophysical properties. Abstract : Chemical evolution : A perylene‐3, 4, 9, 10‐tetracarboxylic acid diimide (PDI)‐based novel bolaamphiphile with an adaptive trait is used to experience the evolution of different assembly structures and distinct spectroscopic properties in an artificial environment (see picture). This approach has led to the development of a metal‐bound supramolecular system that mimics the functionality of a cationic probe molecule.