The redox properties of NDIs are influenced by core substituents as revealed by cyclic voltammetry. Our studies showed that particularly pyrrolidinyl group with strong electron‐donating properties enhanced the fluorescence of such core‐substituted NDI chromophore and caused a significant bathochromic shift in the absorption spectrum with a correspondingly narrowed bandgap of 1.94 eV.
#Ho graph paper maker series#
This paper reports the efficient synthesis, the absorption and the emission spectra and the electrochemical properties of a series of 2,6‐disubstituted naphthalene‐1,4,5,8‐tetracarboxdiimide (NDI) tripodal molecules comprising thioacetate anchors for their surface investigations. This provides fundamental insight into molecular assemblies with intermolecular interactions not confined within a single plane. π intermolecular interactions and a strong S-Ag molecule‒substrate interaction, which suggests the former being responsible for the self-assembly formation with the latter being the stabilizing force.The resulting chiral stereoisomers self-assemble into highly ordered structures, suggesting stereochiral recognition due to intermolecular interactions. TMMT chemisorbs with a three-point contact by the S atoms leading to upright orientation, which has been verified by X-ray photoelectron spectroscopy. Here a scanning tunnelling microscope (STM) was used to study the intermolecular interactions among self-assembled 1,8,13-tris(mercaptomethyl)-triptycenes (TMMT) on Ag(111) with atomic spatial resolution.
However, lateral interactions between the upright molecules become more complex than planar molecules since they are not confined in a single plane.
Upright orientation of a molecular adsorbate is one of the most practical keys for controlling surface functionalities by using self-assembled monolayers.
0 kommentar(er)
