Category: 184239-35-8

Wang, Ziyu; Pan, Jianbin; Li, Qian; Zhou, Yi; Yang, Sen; Xu, Jing-Juan; Hua, Daoben published the artcile< Improved AIE-Active Probe with High Sensitivity for Accurate Uranyl Ion Monitoring in the Wild Using Portable Electrochemiluminescence System for Environmental Applications>, Safety of 1,2-Bis(4-bromophenyl)-1,2-diphenylethene, the main research area is AIE uranyl ion sensor electrochemiluminescence system.

The development of highly sensitive and selective uranyl ion (UO22+) probes has attracted significant attention owing to the threat to human health caused by high toxicity, radioactivity, and long half-life. Herein, the development of aggregation-induced emission (AIE) active polymer dots (Pdots) is described for an accurate UO22+ monitoring using a portable electrochemiluminescence (ECL) system. An AIE-active polymer containing tetraphenylethene and boron ketoiminate moieties is prepared into Pdots and modified with ssDNA to capture UO22+, which can amplify the ECL signal of the Pdots through a resonance energy transfer mechanism. This probe provides an ultralow detection limit of 10.6 pM/2.5 ppt, which is at least two orders of magnitude lower than the known UO22+ luminescent probes. Only UO22+ can provide an obvious ECL enhancement among the various metal ions, indicating the excellent selectivity of this probe. Furthermore, a portable ECL analyzer is designed to realize UO22+ measurements in the wild. The anodic ECL mechanism of UO22+ is discovered and ECL technol. is first applied in monitoring radioactive substances. This study provides a novel strategy for the development of accurate UO22+ probes and a practical UO22+ monitoring method, indicating its potential application in the environmental and energy fields.

Advanced Functional Materials published new progress about Aggregation-induced emission. 184239-35-8 belongs to class bromides-buliding-blocks, and the molecular formula is C26H18Br2, Safety of 1,2-Bis(4-bromophenyl)-1,2-diphenylethene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Qi, Qingkai; Jiang, Shan; Qiao, Qinglong; Wei, Jinbei; Xu, Bin; Lu, Xiaocun; Xu, Zhaochao; Tian, Wenjing published the artcile< Direct observation of intramolecular coplanarity regulated polymorph emission of a tetraphenylethene derivative>, Category: bromides-buliding-blocks, the main research area is tetraphenylethene preparation crystal polymorphism electronic transition.

Polymorphism makes it possible to clarify the relationship between emission property and crystal structure. However, based on the exact mol. conformation in tetraphenylethene polymorphisms, it is still challenging to evaluate the difference of intramol. coplanarity without the support of calculation because of the complex combination of four different torsion angles between four peripheral benzenes and the central ethylene plane. Here, by using a di-formyl-functionalized tetraphenylethene derivative, two ideal polymorphisms with a consistent trend of the corresponding torsion angles have been obtained. For the first time, we explicitly demonstrated that intramol. coplanarity is the underlying cause of the polymorphism-dependent emission of tetraphenylethene derivatives

Chinese Chemical Letters published new progress about Bathochromic effect. 184239-35-8 belongs to class bromides-buliding-blocks, and the molecular formula is C26H18Br2, Category: bromides-buliding-blocks.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Li, Baixue; Liu, Yong; Nie, Han; Qin, Anjun; Tang, Ben Zhong published the artcile< Phosphazene Base-Mediated Azide-Alkyne Click Polymerization toward 1,5-Regioregular Polytriazoles>, Safety of 1,2-Bis(4-bromophenyl)-1,2-diphenylethene, the main research area is phosphazene base azide alkyne click polymerization regioregular polytriazole.

Cu(I)-catalyzed azide-alkyne click polymerization has become a powerful tool for the construction of 1,4-regioregular polytriazoles (PTAs). However, the polymerization toward the synthesis of 1,5-regioregular PTAs has been rarely reported, and the structure-property relationship between 1,5- and 1,4-regioregular PTAs needs to be studied further. In this work, an efficient superbase of phosphazene base (t-BuP4)-mediated azide-alkyne click polymerization was developed, and soluble and thermally stable 1,5-regioregular PTAs with high mol. weights (Mw up to 26 600) were generated in high yields (up to 99%). The relationship between the regiostructures and the thermal stability, light refractivity, photophys. properties, electrochem. behaviors of PTAs was investigated, and the results indicate that the 1,4-regioregular PTA exhibits better conjugation and planarity than that of the 1,5-regioregular one. Thus, this work not only develops a powerful t-BuP4-mediated azide-alkyne click polymerization for the preparation of 1,5-regioregular PTAs but also provides a platform for investigating the structure-property relationship of PTAs, which will guide the design of new PTAs for diverse applications.

Macromolecules (Washington, DC, United States) published new progress about Azide-alkyne 1,3-dipolar cycloaddition reaction. 184239-35-8 belongs to class bromides-buliding-blocks, and the molecular formula is C26H18Br2, Safety of 1,2-Bis(4-bromophenyl)-1,2-diphenylethene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Zhang, Y.; Li, Y.; Jia, X.; Berda, E. B.; Wang, C.; Chao, D. published the artcile< Advanced electrochromic/electrofluorochromic poly(amic acid) toward the colorimetric/fluorometric dual-determination of glycosuria>, Recommanded Product: 1,2-Bis(4-bromophenyl)-1,2-diphenylethene, the main research area is electrochromic electrofluorochromic polyamic acid glucose detection glycosuria.

The electrochromic/electrofluorochromic (EC/EFC) dual-functional polymers have gained intense attention owing to the unique electrochem. induced absorption and emission change simultaneously. Most of the efforts have recently been devoted to improving their EC/EFC performance. However, the practical application studies of the EC/EFC polymers are still in their infancy. Herein, we present a poly(amic acid) based material bearing high solid fluorescence-efficiency AIEgens and electroactive oligoaniline groups, featuring a good electrochromic performance with desirable optical contrast, high coloration efficiency, and outstanding durability. This occurs in tandem with electrofluorochromic behavior with ideal fluorescence contrast and moderate switching speed. By virtue of the versatile electrospinning technique, we manufactured a nanofibrous test strip base on the resultant polymer for glucose determination The colorimetric/fluorometric dual-determination of glucose is carried out with an obvious color change from gray to dark green, along with a drastic fluorescence change from light to dark, which exhibits numerous advantages of easy operation, rapid detection, favorable selectivity, and unique repeated use feature. Furthermore, the nanofibrous test strips also provide reliable results in the glycosuria test. This strategy shows distinct promise for future sensing applications.

Materials Today Chemistry published new progress about Aggregation-induced emission. 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

Rothenbuhler, Simon; Iacovache, Ioan; Langenegger, Simon M.; Zuber, Benoit; Haner, Robert published the artcile< Supramolecular assembly of DNA-constructed vesicles>, Quality Control of 184239-35-8, the main research area is DNA membrane vesicle self assembly cryoelectron microscopy.

The self-assembly of DNA hybrids possessing tetraphenylethylene sticky ends at both sides into vesicular architectures in aqueous medium is demonstrated. Cryo-electron microscopy reveals the formation of different types of morphologies from the amphiphilic DNA-hybrids. Depending on the conditions, either an extended (sheet-like) or a compact (columnar) alignment of the DNA hybrids is observed The different modes of DNA arrangement lead to the formation of vesicles appearing either as prolate ellipsoids (type I) or as spheres (type II). The type of packing has a significant effect on the accessibility of the DNA, as evidenced by intercalation and light-harvesting experiments Only the vesicles exhibiting the sheet-like DNA alignment are accessible for intercalation by ethidium bromide or for the integration of chromophore-labeled DNA via a strand exchange process. The dynamic nature of type I vesicles enables their elaboration into artificial light-harvesting complexes by DNA-guided introduction of Cy3-acceptor chromophores. DNA-constructed vesicles of the kind shown here represent versatile intermediates that are amenable to further modification for tailored nanotechnol. applications.

Nanoscale published new progress about Aggregation-induced emission. 184239-35-8 belongs to class bromides-buliding-blocks, and the molecular formula is C26H18Br2, Quality Control of 184239-35-8.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Xu, Yuan; Tao, Chen-Lei; Yu, Maoxing; Xiong, Yi; Ouyang, Ya-Ni; Liu, Xun-Gao; Zhao, Zujin published the artcile< Tetraphenylethene-Based Luminescent Metal-Organic Framework for Effective Differentiation of cis/trans Isomers>, Related Products of 184239-35-8, the main research area is tetraphenylethene luminescent metal organic framework cis trans isomer; cis/trans differentiation; luminescent metal−organic framework; sensors; tetraphenylethene.

Luminescent metal-organic frameworks (LMOFs) that can effectively differentiate cis/trans isomers are rarely reported. Herein, we report a novel non-interpenetrated pillared-layered LMOF [Zn(HIPA)(BPyTPE)] (1) (BPyTPE = (E)-1,2-diphenyl-1,2-bis(4-(pyridin-4-yl)phenyl)ethene; HIPA = (5-hydroxyisophthalic acid)) with a high fluorescence quantum yield of 90.1%. The activated 1 exhibits high thermal stability and strong fluorescence in a methanol suspension. The fluorescence of activated 1 can be much more efficiently quenched by trans-dimethyl-2-butenedioate and trans-2-butene-1,4-diol than cis-dimethyl-2-butenedioate and cis-2-butene-1,4-diol, which enables it to differentiate these cis/trans isomers. This interesting LMOF could be a new type of fluorescence sensor to effectively detect cis/trans isomers.

ACS Applied Materials & Interfaces published new progress about Aggregation-induced emission. 184239-35-8 belongs to class bromides-buliding-blocks, and the molecular formula is C26H18Br2, Related Products of 184239-35-8.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Yamaguchi, Isao; Fukumoto, Daiki; Wang, Aohan published the artcile< Synthesis and optical properties of pi-conjugated polymers and oligomers bearing hexaphenylbenzene and tetraphenyl ethene units>, Reference of 184239-35-8, the main research area is hexaphenylbenzene tetraphenylethene polymer preparation optical property.

π-Conjugated polymers (CPs) and oligomers (COs) bearing hexaphenylbenzene (HPB) and tetra-Ph ethene (TPE) units were synthesized by Sonogashira and Suzuki-Miyaura coupling reactions. The optical properties of the CPs and COs were investigated by UV-vis, photoluminescence (PL), and fluorescence lifetime (τ) measurements. The PL intensities of the solutions of the CPs and COs synthesized by Sonogashira coupling were reduced upon addition of poor solvent like water, which is attributed to aggregation-caused quenching. In contrast, the CP and COs bearing the TPE unit synthesized by Suzuki-Miyaura coupling exhibited aggregation-induced emission enhancement in solution This difference in fluorescence behavior is discussed herein in terms of the mol. sizes, conformations in solution, and τ values of the CPs and COs.

Journal of Polymer Science (Hoboken, NJ, United States) 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

Grover, Nitika; Emandi, Ganapathi; Twamley, Brendan; Khurana, Bhavya; Sol, Vincent; Senge, Mathias O. published the artcile< Synthesis and Structure of meso-Substituted Dibenzihomoporphyrins>, Electric Literature of 184239-35-8, the main research area is dibenzihomoporphyrin preparation absorption structure singlet oxygen photosensitizer; Expanded porphyrins; Homoporphyrins; Non‐aromatic; Photosensitizer; Porphyrinoids.

Bench-stable meso-substituted di(p/m-benzi)homoporphyrins were synthesized through acid-catalyzed condensation of dipyrrole derivatives with aryl aldehydes. The insertion of a 1,1,2,2-tetraphenylethene (TPE) or but-2-ene-2,3-diyldibenzene unit in the porphyrin framework results in the formation of dibenzihomoporphyrins, merging the features of hydrocarbons and porphyrins. Single crystal X-ray analyses established the non-planar structure of these mols., with the phenylene rings out of the mean plane, as defined by the dipyrromethene moiety and the two meso-carbon atoms. Spectroscopic and structural investigations show that the macrocycles exhibit characteristics of both TPE or but-2-ene-2,3-diyldibenzene and dipyrromethene units indicating the non-aromatic characteristics of the compounds synthesized. Addnl., the dibenzihomoporphyrins were found to generate singlet oxygen, potentially allowing their use as photosensitizers.

European Journal of Organic Chemistry published new progress about Aryl aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 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

Xie, Hui; Hu, Wanshan; Zhang, Fei; Zhao, Changbo; Peng, Tingting; Zhu, Caizhen; Xu, Jian published the artcile< AIE-active polyelectrolyte based photosensitizers: the effects of structure on antibiotic-resistant bacterial sensing and killing and pollutant decomposition>, Safety of 1,2-Bis(4-bromophenyl)-1,2-diphenylethene, the main research area is antibiotic resistant bacterial sensing killing pollutant decomposition photosensitizer; aggregation induced emission polyelectrolyte.

A facile and effective multifunctional platform with high bacterial detection sensitivity, good antibacterial activity, and excellent dye decomposition efficiency holds great promise for wastewater treatment. To explore the design rationality and mechanism of material platforms with various integrated components into a single mol. for wastewater treatment applications, herein, four kinds of polyelectrolyte photosensitizers with aggregation-induced emission (AIE) fluorescent units are synthesized and systematically studied to investigate the structure-property relationship that influences the level of conjugation and the hydrophobicity-hydrophilicity balance. By improving the strength of the conjugation, the new AIE photosensitizers DBPVEs (including DBPVE-4 and DBPVE-6) generate a reactive oxygen species (ROS), and a decomposition efficiency of around 55% is obtained for dyes when they are exposed to DBPVEs under white light irradiation, which is higher than those of DBPEs (including DBPE-4 and DBPE-6). More importantly, owing to the longer and more flexible aliphatic chains of DBPVE-6 that facilitate efficient intercalation into cell membranes, the staining ability of DBPVE-6 for methicillin-resistant S. epidermidis (MRSE) is greatly enhanced as compared to that of DBPVE-4. It should be noted that the antibacterial experiment indicates that DBPVE-6 displays potent toxicity to MRSE with 99.9% killing efficiency under white light irradiation This work provides essential theor. and exptl. guidance on the designing of new photosensitizers for wastewater treatment.

Journal of Materials Chemistry B: Materials for Biology and Medicine published new progress about Aggregation-induced emission. 184239-35-8 belongs to class bromides-buliding-blocks, and the molecular formula is C26H18Br2, Safety of 1,2-Bis(4-bromophenyl)-1,2-diphenylethene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Tu, Yujie; Yu, Yeqing; Zhou, Zhibiao; Xie, Sheng; Yao, Bicheng; Guan, Shujuan; Situ, Bo; Liu, Yong; Kwok, Ryan T. K.; Lam, Jacky W. Y.; Chen, Sijie; Huang, Xuhui; Zeng, Zebing; Tang, Ben Zhong published the artcile< Specific and Quantitative Detection of Albumin in Biological Fluids by Tetrazolate-Functionalized Water-Soluble AIEgens>, Reference of 184239-35-8, the main research area is tetrazolate functionalized fluorescent probe aggregation induced emission albumin; aggregation-induced emission; albumin; diagnostic detection; tetrazolate−lysine interaction; water-soluble fluorescent probe.

The anal. of albumin has clin. significance in diagnostic tests and obvious value to research studies on the albumin-mediated drug delivery and therapeutics. The present immunoassay, instrumental techniques, and colorimetric methods for albumin detection are either expensive, troublesome, or insensitive. Herein, a class of water-soluble tetrazolate-functionalized derivatives with aggregation-induced emission (AIE) characteristics is introduced as novel fluorescent probes for albumin detection. They can be selectively lighted up by site-specific binding with albumin. The resulting albumin fluorescent assay exhibits a low detection limit (0.21 nM), high robustness in aqueous buffer (pH = 6-9), and a broad tunable linear dynamic range (0.02-3000 mg/L) for quantification. The tetrazolate functionality endows the probes with a superior water solubility (>0.01 M) and a high binding affinity to albumin (KD = 0.25μM). To explore the detection mechanism, three unique polar binding sites on albumin are computationally identified, where the multivalent tetrazolate-lysine interactions contribute to the tight binding and restriction of the mol. motion of the AIE probes. The key role of lysine residues is verified by the detection of poly-L-lysine. Moreover, we applied the fluorogenic method to quantify urinary albumin in clin. samples and found it a feasible and practical strategy for albumin anal. in complex biol. fluids.

ACS Applied Materials & Interfaces 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