Aggregation-induced delayed fluorescence luminogens: the innovation of purely organic emitters for aqueous electrochemiluminescence

Abstract

Due to overcoming the limitation of aggregation caused quenching (ACQ) on solid-state emitter, aggregation-induced emission (AIE) organic luminogens have becoming a promising candidate in aqueous electrochemiluminescence (ECL). However, restricted by...

Theoretical studies on the excited-state properties of thermally activated delayed fluorescence molecules with aggregation induced emission

“…Thus, the SOC effect is affected by the molecular surrounding environment, the rigid environment in the solid phase with remarkable intermolecular interactions could facilitate the ISC and RISC processes, this observation is consistent with the mechanism of aggregation induced delayed fluorescence (AIDF). 50–53…”

“…Thus, the SOC effect is affected by the molecular surrounding environment, the rigid environment in the solid phase with remarkable intermolecular interactions could facilitate the ISC and RISC processes, this observation is consistent with the mechanism of aggregation induced delayed fluorescence (AIDF). [50][51][52][53] 4.3.3 RMSD values and reorganization energy of ISC and RISC processes. As the ISC and RISC processes are not only related to DE ST and the SOC constant, but can also be affected by the reorganization energies, which are related to the geometrical changes.…”

A scaffold of thermally activated delayed fluorescent polymer dots towards aqueous electrochemiluminescence and biosensing applications

“…The calculation of different photophysical parameters is shown in Table 1 and Table S1,† in which the methods refer to the ever-established TADF photophysical theory. 36,39,44 For the electrochemistry study, the cyclic voltammetry (CV) signals were acquired using a DC1300 Electrochemical workstation (Guangdong Dynechem Electronic Technology Co., Ltd China). Generally, a standard three-electrode system, i.e.…”

“…To address this, we established the aqueous aggregation-induced delayed fluorescent (AIDF)-ECL, which was effective in eliminating ACQ-induced TADF quenching behavior in aqueous ECL. 36 However, compared with the explored TADF emitters, 30 the qualified AIDF luminogens are scarce since they should simultaneously optimize the AIE and TADF properties in one compound, which is difficult to realize. A universal strategy is thus expected for common TADF emitters towards efficient and stable aqueous TADF-ECL.…”

Dual-potential electrochemiluminescent film constructed from single AIE luminogens for the sensitive detection of malachite green

“…20 Tang's group reported that aggregation-induced delayed fluorescent (AIDF) luminogens extremely boosted the aqueous ECL efficiency 5.4 times by overcoming the limitation of ACQ. 21 Indeed, the inno-vation of the aggregation-induced emission (AIE) concept provides an ideal platform to solve the ACQ problem. [22][23][24][25][26] Different from the ACQ effect, the fluorescence of AIE luminophores is boosted by aggregate formation, 27,28 which is beneficial for the development of high-efficiency ECL devices.…”