Efficient bipolar AIE emitters for high-performance nondoped OLEDs

Zhang, Jiasen; Bai, Yongqi; Wei, Qiang; Cao, Liang; Wang, Tao; Ge, Ziyi

doi:10.1039/d0tc02566f

Cited by 27 publications

(18 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Its non-doped OLEDs showed excellent performances, with maximum luminance, current efficiency, power efficiency and external maximum efficiency values that reach the theoretical limit for fluorescent OLEDs. This performance ise much better than that of the molecules that bear two identical PBI moieties (98), or two carbazole units on the central TPE unit [98].…”

Section: Tetraphenylethene Derivativesmentioning

confidence: 91%

“…For the benzothiazolium derivative 96, with strong ICT, the emission maximum is 565 nm for the pure dye, and 591 nm for a solvate [97]. However, the most stunning characteristic of some TPE-BZ derivatives is their very high PLQY, reaching for example 0.68 for 91 [93], 0.84 for 97 and 0.86 for 98 [98], while it is only 0.22 for TPE.…”

Section: Tetraphenylethene Derivativesmentioning

confidence: 99%

“…Molecule 95, a highly conjugated -system with four BI units, has a yellowish green Figure 21. Molecular structure of TPE derivatives 87−90 [92], 91−94 [93], 95 [96], 96 [97], 97 and 98 [98], 99 [99], 100 [100] and 101−103 [101] with solid-state PL maxima (λ em ) and photoluminescence quantum yields (Φ PL ). emission at 525 nm [96].…”

Section: Tetraphenylethene Derivativesmentioning

confidence: 99%

“…The Suzuki Pd-catalyzed cross-coupling reaction was also well exploited to access TPE-BZ derivatives. For instance, compound 98 was obtained by Zhang et al in 40% yield via a Suzuki coupling reaction between 1,2-bis(4-bromophenyl)-1,2-diphenylethene and adequate commercially available phenylbenzimidazole boronic acid [98] (Scheme 14). Scheme 14.…”

Section: Synthesis Of Organogelators 17mentioning

confidence: 99%

See 3 more Smart Citations

Recent Trends in the Design, Synthesis, Spectroscopic Behavior, and Applications of Benzazole-Based Molecules with Solid-State Luminescence Enhancement Properties

Fery–Forgues

Vanucci-Bacqué

2021

Top Curr Chem (Z)

View full text Add to dashboard Cite

Molecules that exhibit solid-state luminescence enhancement, i.e. the rare property to be more strongly emissive in the solid state than in solution, find an increasing number of applications in the fields of optoelectronic and nanophotonic devices, sensors, security papers, imaging and theranostics. Benzazole (BZ) heterocycles are of particular value in this context. The simple enlargement of their πelectron system using a -C=C-Ar, or -N=C-Ar moiety is enough for intrinsic SLE properties to appear. Their association with a variety of polyaromatic motifs leads to SLE-active molecules that frequently display attractive electroluminescent properties and are sensitive to mechanical stimuli. The excitedstate intramolecular proton transfer (ESIPT) process that takes place in some hydroxy derivatives reinforces the SLE effect and allows the development of new sensors based on a protection/deprotection strategy. BZ may also be incorporated into frameworks that are prototypical aggregation-induced enhancement (AIE) luminogens, such as the popular tetraphenylethene (TPE), leading to materials with excellent optical and electroluminescent performance. This review encompasses the various ways to use benzazole units in SLE systems. It underlines the significant progresses recently made in the understanding of the photophysical mechanisms involved. A brief overview of the synthesis shows that BZ units are robust building blocks, easily incorporated into a variety of structures. Generally speaking, we try to show how advantage may be taken from these small heterocycles for the design of increasingly efficient luminescent materials.

show abstract

Section: Tetraphenylethene Derivativesmentioning

confidence: 91%

Section: Tetraphenylethene Derivativesmentioning

confidence: 99%

Section: Tetraphenylethene Derivativesmentioning

confidence: 99%

Section: Synthesis Of Organogelators 17mentioning

confidence: 99%

See 2 more Smart Citations

Recent Trends in the Design, Synthesis, Spectroscopic Behavior, and Applications of Benzazole-Based Molecules with Solid-State Luminescence Enhancement Properties

Fery–Forgues

Vanucci-Bacqué

2021

Top Curr Chem (Z)

View full text Add to dashboard Cite

show abstract

“…The fabrication of AIE based OLEDs is generally carried out via spin coating, thermal and vacuum deposition and often requires several accompanying layers of indium titanium oxide, 1,4,5,8,9,11‐hexaazatriphenylenehexaca‐rbonitrile (HATCN) etc. to function as OLED [86–88] . The water‐soluble nature of AIE‐sulfonates may allow the facile fabrication of OLEDs by simple layer deposition from aqueous solution into a nice array of luminescent probe by electrostatic interaction with the other layer on the surface.…”

Section: Oled Applicationsmentioning

confidence: 99%

Sulfonate‐Functionalized AIEgens: Strategic Approaches Beyond Water Solubility for Sensing and Imaging Applications

2022

View full text Add to dashboard Cite

The development of water-soluble aggregation-induced emission (AIE)-active "light-up" probes for sensing and imaging purposes has drawn immense research attention in the recent past. One strategy has been to introduce À SO 3 À groups in AIEgens (AIE-sulfonates) to increase their hydrophilic properties, and the ionic nature of the corresponding compounds also paves the way for electrostatic interaction with various analytes, in particular, with several biospecies having positively charged surfaces. A significant number of AIE-sulfonates, many among them having a tetraphenylethylene (TPE) moiety, have been designed and synthesized for the selective detection of a variety of analytes, such as metal ions, small molecules, enzymes, proteins, and bacteria. The strategies for selective detection include, for example, spontaneous complex formation with cations, electrostatic interaction with target-specific units in the biospecies, and strong hydrophobic interactions. In addition, these AIEgens are used in cell imaging and OLED applications. This Review attempts to provide a summary and discuss recent developments in sulfonate-functionalized AIEactive "light-up" probes in sensing and imaging applications with a focus on the role of the sulfonate functionality in the design and sensing processes.

show abstract

Thermally Reversible On‐Off Switching of Aggregation‐Induced Emission via LCST Phase Transition of Ionic Liquids in Water

Iwasawa

Uchida

Hara

et al. 2023

Advanced Optical Materials

View full text Add to dashboard Cite

A new phosphonium‐based ionic liquid is designed and synthesized using the 1,1,2,2‐tetraphenylethene‐derived anion ([P4444]4[TSPE]). Aqueous solutions of [P4444]4[TSPE] are obtained as transparent liquids (monophasic state), which suspended with increasing temperature. This behavior is found to exhibit a lower critical solution temperature (LCST) phase transition behavior. The LCST phase transition temperature can be controlled from 36 to 55 °C by changing the weight ratio between [P4444]4[TSPE] and water. When observing the LCST phase transition behavior of aqueous solutions of [P4444]4[TSPE] under excitation light with a wavelength of 365 nm, negligible photoluminescence in the monophasic state is observed at room temperature. Conversely, strong photoluminescence is observed in the suspended state when the temperature is above the LCST phase transition temperature. This strong photoluminescence is attributed to aggregation‐induced emission (AIE) that is induced by the restriction of the intramolecular rotations of the 4‐sulfophenyl groups against the ethylene core in the [TSPE] anion. This behavior is thermally reversible. This is the first example of on‐off switching of AIE achieved using the LCST behavior of ionic liquids.

show abstract

Efficient bipolar AIE emitters for high-performance nondoped OLEDs

Abstract: Three luminogens were designed and synthesied by integrating TPE with hole-transporting carbazole (Cz) and/or electron-transporting 1,2-diphenyl-1H-benzimidazole (PBi), and the bare tetraphenylethene and another donor−acceptor (D−A) compound of aggregation-caused quenching (ACQ)...

Cited by 27 publications

References 36 publications

Recent Trends in the Design, Synthesis, Spectroscopic Behavior, and Applications of Benzazole-Based Molecules with Solid-State Luminescence Enhancement Properties

Recent Trends in the Design, Synthesis, Spectroscopic Behavior, and Applications of Benzazole-Based Molecules with Solid-State Luminescence Enhancement Properties

Sulfonate‐Functionalized AIEgens: Strategic Approaches Beyond Water Solubility for Sensing and Imaging Applications

Thermally Reversible On‐Off Switching of Aggregation‐Induced Emission via LCST Phase Transition of Ionic Liquids in Water

Contact Info

Product

Resources

About