Bipolar luminescent azaindole derivative exhibiting aggregation-induced emission for non-doped organic light-emitting diodes

Abstract

A new D–A bipolar luminescent azaindole demonstrates its potential applicability in non-doped OLEDs.

Azaindole grafted titanium dioxide for the photodegradation of pharmaceuticals under solar irradiation

“…In consequence, the CB and VB potential levels of TiO 2 were estimated to be located at À0.58 and 2.76 V, respectively (Equations (2) and ( 3)). Using the positions of the LUMO and HOMO of the sensitizer (previously reported [3]), Fig. 7d proposes a plausible band configuration.…”

“…The synthesis of the azaindole derivatives was performed following previous works (see Scheme 1a) [3,23]. The AZA1 compound was synthesized through a nucleophilic substitution reaction in the nitrogen position of 5-bromo-7-azaindole with 1iodododecane, KOH, and (Bu) 4 N(HSO 4 ) in acetone.…”

“…Common electron-donor species used for these applications are phenylamine and azaphenalenes derivatives, whereas carbazolyl and pyridines-based compounds are common electron-acceptors [2]. An azaindole derivative, composed of a triphenylamine unit (acting as donor) and 2-cyanoacrylic acid (as acceptor) was recently described as a promising approach for the preparation of highperformance organic light-emitting diodes [3]. Despite their promising characteristics, research into the use of these specific molecules for photocatalytic applications is still scarce.…”

Rational Design of Pyrido[3,2-b]indolizine as a Tunable Fluorescent Scaffold for Fluorogenic Bioimaging

“…Of note, isomeric pyrido[2,3- b ]indolizine derivatives were reported by Voskressensky et al, which provided further insights into the structural diversity of indolizine-based fluorophore . 7-Azaindole, notable for its high biocompatibility, is recognized as a weakly fluorescent bioisostere of indole, − whereas indolizine has been used in a well-defined fluorophore, Seoul-Fluor, and extensively studied in the structure–photophysical property relationship. − Time-dependent density-functional theory (TD-DFT) calculations suggested that pyrido[3,2- b ]indolizine would absorb light nearly in the visible range (396 nm), longer than its original components, 7-azaindole (263 nm) or indolizine (334 nm), despite its compact size.…”

Pd-Catalyzed Sequential Arylation of 7-Azaindoles: Aggregate-Induced Emission of Tetra-Aryl 7-Azaindoles

“…Recently, C-arylated 7-azaindoles have exhibited desirable applications in organic light-emitting molecules and sensors (Figure ). Propeller-like organic frameworks having peripheral phenyl/aryl groups with different electronic characteristics show aggregation-induced emission (AIE) phenomena attracting material chemists all over the globe . In view of the above, it remains imperative to explore the synthesis of multi-aryl 7-azaindole derivatives for applications in medicinal and material sciences.…”