A strategy for the molecular design of aggregation-induced emission units further modified by substituents

Abstract

Aryl-substituted pyrrolo[3,2-b]pyrrole as a new AIE unit modified by different electron-withdrawing or electron-donating substituents to obtain AIEgens.

Rationally Designed Furocarbazoles as Multifunctional Aggregation Induced Emissive Luminogens for the Sensing of Trinitrophenol (TNP) and Cell Imaging

“…However, among the several proposed hypotheses, the aggregation‐induced emission (AIE) arising due to restricted intramolecular rotation (RIR) has been researched most, resulting in the emergence of tetra‐phenylethylene (TPE) and pentaphenyl silole core as most promising AIE‐active luminogens . Despite several ambiguities on the mechanism of AIE activity, luring applications of AIEgens have established certain design criteria that accentuate on the influences of the restricted rotations due to intermolecular interactions between the neighboring molecules in the solid‐state . Enhancement in the solid‐state emission is achievable by limiting the intermolecular π‐stacking of luminogens as well as by restricting molecular motions by precisely controlling the supramolecular interactions.…”

Matrix Coordination Induced Emission in a Three‐Dimensional Silver Cluster‐Assembled Material

“…It is worth noting that not all of the propeller‐like molecules are AIE‐active . In this work, a new propeller‐like molecule 2,5‐bis(4‐cyanophenyl)‐1,4‐bis(4‐(pyridine‐4‐yl)‐phenyl)‐1,4‐dihydropyrrolo[3,2‐ b ]pyrrole ( CPPP ) was designed and synthesized, and it revealed the typical ACQ property.…”

Real time bioimaging for mitochondria by taking the aggregation process of aggregation-induced emission near-infrared dyes with wash-free staining

“…11 The discovery of AIE provides a favorable method for solving the difficult problem of ACQ since a typical AIE molecule, similar to an ACQ one, has a very good p-conjugation efficiency, but it is not flat, it has a propeller structure. 2,12 Therefore, its solution is not emissive because of the active rotations or vibration of the molecular units, that non-radiatively deactivate the excited state. Instead in an aggregate or solid state, the molecular movements are impeded, and the only attainable deactivation pathway is the radiative one.…”