An AIE-active luminophore with tunable and remarkable fluorescence switching based on the piezo and protonation–deprotonation control

Ma, Chunping; Xu, Bingjia; Xie, Gaoyi; He, Jiajun; Xie, Zhiyuan; Peng, Bangyin; Jiang, Long; Xu, Bin; Tian, Wenjing; Chi, Zhenguo; Liu, Siwei; Zhang, Yi; Xu, Jiarui

doi:10.1039/c4cc01012d

Cited by 160 publications

(66 citation statements)

References 22 publications

(3 reference statements)

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“…Compounds 4-(1,2,2-triphenylvinyl)benzaldehyde (5) [15] and 4-(1,2,2-triphenylvinyl)aniline (7) [16] were prepared according to literature methods. All other chemicals and reagents were purchased from J&K Scientific Ltd., and used as received without further purification.…”

Section: Materials and Instrumentsmentioning

confidence: 99%

Blue fluorophores comprised of tetraphenylethene and imidazole: aggregation-induced emission and electroluminescence

Xiang

Jiang

Zhou

et al. 2015

Front. Optoelectron.

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By melting tetraphenylethene (TPE) and 1,2,4,5-tetraphenyl-1H-imidazole (TPI) units together through different linking positions, three new fluorophores are synthesized, and their optical, electronic and electroluminescence (EL) properties are fully studied. Owing to the presence of TPE unit(s), these fluorophores are weak emitters in solutions, but are induced to emit strongly in the aggregated state, presenting typical aggregation-induced emission characteristics. The experimental and computational results reveal that different connection patterns between TPE and TPI could impact the molecular conjugation greatly, leading to varied emission wavelength, fluorescence quantum yield and EL performance in organic light emitting diodes (OLEDs). The fluorophore built by attaching TPE unit to the 1-position of imidazole ring shows bluest fluorescence, and its EL device emits at deep blue region (445 nm; CIE = (0.16, 0.15)). And the device based on the fluorophore by linking TPE to the 2-position of imidazole ring shows EL at 467 nm (CIE = (0.17, 0.22)) with good efficiencies of 3.17 cd$A -1 , and 1.77%.

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Section: Materials and Instrumentsmentioning

confidence: 99%

Blue fluorophores comprised of tetraphenylethene and imidazole: aggregation-induced emission and electroluminescence

Xiang

Jiang

Zhou

et al. 2015

Front. Optoelectron.

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“…Some serendipitous examples exhibiting tricolored emission switching have been reported including liquid crystal mixture with 9,10‐bis(phenylethynyl)anthracene by Sagara and Kato, twisted donor acceptor type MC luminogen by Ma and co‐workers, tetraphenylethylene linked rhodamine B by Jia and co‐workers, and so forth. Chi and co‐workers reported one tetraphenylethene derivative with 6‐hydroxylbenzothiazole, whose emission can be tuned among four colors through mechanical stimulus protonation and deprotonation, while the chemical structure is changed upon protonation . Sagara and Weder achieved modulation of one cyano‐substituted oligo( p ‐phenylene vinylene) among five emissive states .…”

Section: Introductionmentioning

confidence: 99%

Construction of a Luminogen Exhibiting High Contrast and Multicolored Emission Switching through Combination of a Bulky Conjugation Core and Tolyl Groups

Duan

Tian

et al. 2018

Chemistry An Asian Journal

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Stimuli‐responsive luminogens may find application in highly sensitive sensors, memories and security inks. However, few examples exhibiting both high contrast and multi‐colored emission switching have been reported due to the absence of a molecular design strategy. Through combination of large conjugation core and peripheral phenyl rings, we obtained ditolyldibenzofulvene (1). Luminogen 1 is AIE active and exhibits tetracolored emission depending on its morphology. Its three single crystals emit blue, yellow and dark orange light upon excitation, exhibiting a maximal emission of 461 nm, 545 nm and 586 nm, respectively, and its amorphous solid emits at 557 nm. All the four aggregates exhibit enhanced emission intensity at lower temperature, but only the orange‐emissive crystals exhibit blue‐shifted emission. The emission of 1 can be switched reversibly between any two of the four states through morphology tuning. Finally, the potential application of 1 in optical data storage was also investigated.

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“…The aim of introducing 6-hydroxylbenzothiazole was to achieve as ite specific in response to acid ( Figure 14). [27] 17 wasA IE active and showed at etracolor change based on piezo and protonation-deprotonation control. As shown in Figure 14, an as-prepared powder of 17 (B 1 )e xhibited strong blue-light emission centered at 454 nm.…”

Section: Multicolor Switchingina Ie Moleculesmentioning

confidence: 99%

“…Adapted with permission from Ref. [27].C opyright 2014, Royal SocietyofC hemistry. ChemPhysChem 2015ChemPhysChem , 16,1811ChemPhysChem -1828 www.chemphyschem.org Weng et al has also observed similar phenomena.…”

Section: Multicolor Change Owing To Mechanical Control Of Chemical Stmentioning

confidence: 99%

Mechanically Induced Multicolor Change of Luminescent Materials

et al. 2015

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Mechanofluorochromic or piezochromic fluorescence chemistry involves the switching and tuning of the luminescent properties of solid-state materials induced by exogenous forces, such as grinding, shearing, compression, tension, and so forth. Up until now, most reported mechanochromic systems, including liquid crystals, organic molecules, organometallic compounds, polymers, and dye-doped polymers, have displayed reversible two-color changes, which arise from either supramolecular or chemical structure transformations. However, fluorescent materials that undergo mechanically induced multicolor changes remain rare; this Minireview is focused on such materials. Topics are categorized according to the different applied forces that are required to induce the multicolor change, including mechanical control of either the supramolecular structures or the chemical structures, and mechanical control of both the supramolecular structures and chemical structures.

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An AIE-active luminophore with tunable and remarkable fluorescence switching based on the piezo and protonation–deprotonation control

Cited by 160 publications

References 22 publications

Blue fluorophores comprised of tetraphenylethene and imidazole: aggregation-induced emission and electroluminescence

Blue fluorophores comprised of tetraphenylethene and imidazole: aggregation-induced emission and electroluminescence

Construction of a Luminogen Exhibiting High Contrast and Multicolored Emission Switching through Combination of a Bulky Conjugation Core and Tolyl Groups

Mechanically Induced Multicolor Change of Luminescent Materials

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