Category: 184239-35-8

Liu, Xiaoqing; Shang, Yuxuan; Chen, Zhong-Ren published the artcile< Vinyl Groups Containing Tetraphenylethylene Derivatives as Fluorescent Probes Specific for Palladium and the Quenching Mechanism>, Reference of 184239-35-8, the main research area is palladium detection aggregation induced emission fluorescent probe.

We previously reported that a series of tetraphenylethylene (TPE)-containing all-hydrocarbon conjugated polymers exhibited a specific fluorescence quenching by palladium ions (Pd2+). To understand the quenching mechanism, herein we investigate the quenching behaviors of three TPE derivatives in the presence of Pd2+. Each TPE derivative, consisting of TPE unit and terminal vinyl groups, shows an aggregation-induced emission (AIE) and its fluorescence turns off specifically to Pd2+. The sensitivity is enhanced with increasing numbers of vinyl groups in the mols. By time-resolved fluorescence measurement, a dynamic quenching is observed where the fluorescence lifetime is reduced with Pd2+. Specifically, the quenching occurs via the electron transfer in the excited states, as suggested by the disappearance of the stimulated emission band in transient absorption spectra. A theor. calculation on the excited states identifies intermol. electron transfer from TPE derivatives to Pd, especially for electron-rich TPE derivative The mechanism can be general for the design of novel AIE active chemosensors.

Chinese Journal of Chemistry published new progress about Aggregation-induced emission. 184239-35-8 belongs to class bromides-buliding-blocks, and the molecular formula is C26H18Br2, Reference of 184239-35-8.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Cai, Xinye; Du, Jun; Zhang, Lianglin; Li, Yi; Li, Baozong; Li, Hongkun; Yang, Yonggang published the artcile< Circularly polarized luminescence of single-handed helical tetraphenylethylene-silica nanotubes>, Recommanded Product: 1,2-Bis(4-bromophenyl)-1,2-diphenylethene, the main research area is circularly polarized luminescence helical tetraphenylethylene silica nanotube.

Two single-handed helical tetraphenylethylene-silica nanotubes with circularly polarized luminescence (CPL) properties and enhanced fluorescence efficiency were fabricated through a supramol. templating approach using the self-assemblies of chiral gelators as templates. This work provides a facile strategy for constructing CPL-active organic-inorganic hybrid nanomaterials with single-handed helical morphologies.

Chemical Communications (Cambridge, United Kingdom) published new progress about Circular dichroism. 184239-35-8 belongs to class bromides-buliding-blocks, and the molecular formula is C26H18Br2, Recommanded Product: 1,2-Bis(4-bromophenyl)-1,2-diphenylethene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Lafzi, Ferruh; Kilic, Haydar; Ertugrul, Berrak; Arik, Mustafa; Saracoglu, Nurullah published the artcile< Bis(indolyl)methane substituted tetraphenylethylene derivatives as AIE active materials>, Formula: C26H18Br2, the main research area is tetraphenylethylene derivative aggregation induced emission.

A series of nonplanar tetraphenylethene (TPE)-bis(indolyl)methane (BIM) conjugates were designed and prepared and characterized by standard spectroscopic techniques. The properties of TPE-BIM derivatives were investigated by UV/Vis and fluorescence spectroscopy, and DFT calculations All of the TPE-BIM showed aggregation-induced emission (AIE) features. However, DFT calculations confirmed the nonplanar structures or propeller structures.

Journal of Luminescence published new progress about Aggregation-induced emission. 184239-35-8 belongs to class bromides-buliding-blocks, and the molecular formula is C26H18Br2, Formula: C26H18Br2.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Sevgili, Omer; Lafzi, Ferruh; Karabulut, Abdulkerim; Orak, Ikram; Bayindir, Sinan published the artcile< The synthesis of new bola-amphiphile TPEs and the comparison of current transformer mechanism and structural properties for Al/Bis(HCTA)-TPE/p-Si and Al/Bis(HCOA)-TPE/p-Si heterojunctions>, Recommanded Product: 1,2-Bis(4-bromophenyl)-1,2-diphenylethene, the main research area is bola amphiphile tetraphenylethylene silicon heterojunction current transformer.

In this study, the new bola-amphiphile tetraphenylethylene derivatives Bis(HCTA)-TPE and Bis(HCOA)-TPE were synthesized to use in device application by a green approach. Al/organic layer/p-Si heterojunctions were fabricated by the usage of Bis(HCTA)-TPE and Bis(HCOA)-TPE organic interfacial layers. The mentioned organic layers were coated on the polished side of silicon wafer using the spin coating method. The surface and morphol. analyses of materials coated on silicon substrate were investigated by using at. force microscopy (AFM) and SEM (SEM) images. Besides, the elec. characteristics of fabricated heterojunctions were examined by the use of current-voltage (I-V) and current-time (I-t) measurements and compared with each other. I-V characteristics were investigated under various illumination conditions, and also the behavior of these characteristics against changing temperature conditions has been determined At the same time, transient photocurrent measurements were performed to determine the photoresponse behaviors. The results show that the fabricated device with Bis(HCTA)-TPE organic interfacial layer exhibits better elec. characteristics than the Bis(HCOA)-TPE organic layer. The other result of this experiment is that the fabricated devices could be used in optoelectronic and photovoltaic applications.

Composites, Part B: Engineering published new progress about Electric contacts. 184239-35-8 belongs to class bromides-buliding-blocks, and the molecular formula is C26H18Br2, Recommanded Product: 1,2-Bis(4-bromophenyl)-1,2-diphenylethene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Wang, Ji; Tong, Jin; Wang, Zhi-Feng; Yuan, Qing; Wang, Xia-Yan; Yu, Shu-Yan; Tang, Ben-Zhong published the artcile< Highly specific and selective fluorescent chemosensor for sensing of Hg(II) by NH-pyrazolate-functionalized AIEgens>, Recommanded Product: 1,2-Bis(4-bromophenyl)-1,2-diphenylethene, the main research area is pyrazolate selective fluorescent chemosensor environmental remediation luminescence; Aggregation-induced emission; Fluorescent chemosensor; Hg(II) ion; NH-Pyrazole; Turn-on fluorescence.

Luminescent organic mols. are of important realistic significance to the human health and ecol. environment due to their fascinating applications. Here we report the design and synthesis of luminescent organic-mols. by introducing two or four NH-pyrazolate groups as mercury-binding moieties to aromatic cores. Interestingly, the new aromatic tetraphenylene-bridged multi-NH-pyrazoles exhibit strong fluorescence in both aggregate and solid state and constitutes highly selective proof-of-concept luminescent sensor for Hg(II) ion among various competitive transition-metal ions in both organic and mixed solutions via metal-nitrogen binding. Especially, the present sensor including two NH-pyrazolyl groups showed an extremely high sensitivity with low limit of detection of 7.26 and 3.67 nM. The proposed design strategy provides a wide scope for the construction of unique turn-on sensors with substantial potential in the sense of heavy metal pollution in environmental water samples.

Analytica Chimica Acta published new progress about Aggregates. 184239-35-8 belongs to class bromides-buliding-blocks, and the molecular formula is C26H18Br2, Recommanded Product: 1,2-Bis(4-bromophenyl)-1,2-diphenylethene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Gao, Hang; Zhang, Nan; Li, Yang; Zhao, Wei; Quan, Yiwu; Cheng, Yixiang; Chen, Hong-Yuan; Xu, Jing-Juan published the artcile< Trace Ir(III) complex enhanced electrochemiluminescence of AIE-active Pdots in aqueous media>, Recommanded Product: 1,2-Bis(4-bromophenyl)-1,2-diphenylethene, the main research area is polytetraphenylethene iridium complex Suzuki coupling polymerization electrochemiluminescence.

Trace Ir(III) complex enhanced aggregation-induced electrochemiluminescence (AIECL) of poly-tetraphenylethene (pTPE) in aqueous media was investigated for the first time. The poly-TPE end-capped by Ir(III) complex (Ir@pTPE) and its corresponding model polymer poly-TPE (Ph@pTPE) could be synthesized by Suzuki coupling polymerization reaction of 1,2-bis(4-bromophenyl)- 1,2-diphenylethene (M-1) with 1,2-diphenyl-1,2-bis(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethene (M-2) and the continuous Suzuki coupling end-capped reaction of poly-TPE-pinacol boronate with (pq)2Ir(pico)Br and bromobenzene, resp. Subsequently, the corresponding Ir@pTPE Pdots and Ph@pTPE Pdots encapsulated with poly(styrene- co-maleicanhydride) (PSMA) could be obtained by nano-precipitation method. Compared with Ph@pTPE Pdots, the Ir@pTPE Pdots with a trace amount of Ir(III) complex (1.34‰ of Ir(III) content, wt) could exhibit 9.9-fold enhancement of the electrochemiluminescence (ECL) signal for visual emission. This work provided a novel strategy on designing highly efficient ECL materials based on trace Ir(III)-end capping AIE-active polymer dots. electrochemiluminescence, aggregation-induced emission, Ir(III) complex, polymer dots.

Science China: Chemistry published new progress about Electric current-potential relationship. 184239-35-8 belongs to class bromides-buliding-blocks, and the molecular formula is C26H18Br2, Recommanded Product: 1,2-Bis(4-bromophenyl)-1,2-diphenylethene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Fei, Nannan; Wei, Qiang; Cao, Liang; Bai, Yongqi; Ji, Honglei; Peng, Ruixiang; Huang, Like; Hao, Shiyou; Ge, Ziyi published the artcile< A symmetric nonpolar blue AIEgen as nondoped fluorescent OLED emitter with low efficiency roll-off>, Electric Literature of 184239-35-8, the main research area is organic light emitting diode aggregation induced emission.

Blue emitters are necessary for achieving full-color displaying OLEDs, however, most blue emitters show low efficiency, short lifetime or serious efficiency roll-off, hindering the development of OLED techniques. In this research, a nonpolar sym. aggregation-induced emission (AIE) emitter was designed and constructed through facile steps, with the triphenylamine-end, anthracene-spacer and tetraphenylethene (TPE)-center. This emitter exhibited good thermal stability and aggregation-enhanced emission (AEE) characteristics, based on which non-doped blue OLED device was readily fabricated with the maximum external quantum efficiency (EQE) of 2.7% and also with no efficiency roll-off even at 1000 cd m-2, indicative of high efficiency and good stability as fluorescent emitter.

Organic Electronics published new progress about Aggregation-induced emission. 184239-35-8 belongs to class bromides-buliding-blocks, and the molecular formula is C26H18Br2, Electric Literature of 184239-35-8.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary