A rigid sublimable naphthalenediimide cyclophane as model compound for UHV STM experiments
作者:Sandro Gabutti、Marco Knutzen、Markus Neuburger、Guillaume Schull、Richard Berndt、Marcel Mayor
DOI:10.1039/b719796a
日期:——
The design, synthesis and characterization of a rigid naphthalenediimide cyclophane as a model compound for ultrahigh vacuum (UHV) STM experiments are described together with first self-assembly investigations on an Au(111) substrate displaying the formation of densely packed parallel rows of molecules.
Cation-Assisted Reversible Folding and Anion Binding by a Naphthalenediimide-Based Ditopic Ion-Pair Receptor
作者:Krishnendu Maity、Dillip K. Panda、Robert J. Gallup、Chandan K. Choudhury、Sourav Saha
DOI:10.1021/acs.orglett.7b03861
日期:2018.2.16
heteroditopic ion-pairreceptor was synthesized by tethering two π-acidic naphthalenediimide units with a tridentate bisimine linker. Upon chelating a ZnII or CdII ion with the linker, it adopts a U-conformation allowing the parallel NDI arms to sandwich charge-diffuse anions, and two such folded receptor molecules interlock with each other forming an [R3·MII·R3·X–] ion-paircomplex. Extraction of
energy slipplanes, thus facilitating an impressive mechanical flexibility, which allowed molding the crystals into alphabetical characters to spell out "o r g a n i c c r y s t a l". The study, which reports the preparation of a series of exotic plastic crystals by design for the first time, demonstrates the potential of soft interactions for tuning the mechanical behavior of ordered molecular materials