N-Substitution of acridone with electron-donating groups: crystal packing, intramolecular charge transfer and tuneable aggregation induced emission

Abstract

Triphenylamine functionalized acridone leads to a donor–acceptor system with intramolecular charge transfer process and tuneable aggregation induced enhanced emission.

Aza-aromatic polycycles based on triphenylene and acridine or acridone: synthesis and properties

“…Both acridine and acridone derivatives can display interesting fluorescence properties, in particular when substituted by electrondonating groups. 18,48 Thus, to establish structure-properties relationships, preliminary studies of the photophysical properties of most of the nitrogen-containing polycycles were performed. Their UV-visible absorption and emission properties were investigated in toluene, and the results are gathered in Table 1.…”

Metal-Mediated Coordination Cages: Endohedral Functionalization and Oligonucleotide Embedding

“…However, since some results indicating a small influence on the rotational motion, it is worth to continue the research on this topic, in particular since this approach could be used as a good starting point for several new systems in the field of supramolecular functional units, [2,3] molecular sensing [4] or organic light-emitting diodes (OLED). [5]…”

“…Since the secondary or tertiary DNA structure shall be kept intact during the experiment, the gel was run under non-denaturing conditions as described in section B. 5. It is worth to mention, that all salts and buffers were already added to the unpolymerized gel solution, thus, the gel already contained the same salt concentration, as the running buffer.…”

“…The same behavior is seen for ferrocene guest (G 1 ) which showed an encapsulation with slow exchange in the adamantyl system. However, since we expected to have a better chance to observe the influence of the guest uptake on the rotation motion in a system where the encapsulation occurs in a slow exchange fashion, the titration experiments were performed with the more steric demanding guests G 3 and G 5 . Both experiments showed upon the first addition an extreme broadening of all signal in the NMR spectrum, though a broad significantly downfield shifted signal appeared, assumed to be inward pointing proton g/g'.…”

“….7.8 to VI.1.7.10). The here shown examples are all from the titration experiments with guest G5 , as it emerged to be the most promising combination.Interestingly, in nitromethane the before described broadening occurs again, likewise to the experiments in acetonitrile. By performing the experiments at 60 • C the signals became again slightly sharper but were still to broad to gain any usable information (Figure VI.1.7.10).…”