Tag: 400-500

《A contorted nanographene shelter》 was written by Wu, Huang; Wang, Yu; Song, Bo; Wang, Hui-Juan; Zhou, Jiawang; Sun, Yixun; Jones, Leighton O.; Liu, Wenqi; Zhang, Long; Zhang, Xuan; Cai, Kang; Chen, Xiao-Yang; Stern, Charlotte L.; Wei, Junfa; Farha, Omar K.; Anna, Jessica M.; Schatz, George C.; Liu, Yu; Fraser Stoddart, J.. Recommanded Product: 4316-58-9This research focused ontriphenylamine nanographene cage preparation crystal structure NCI. The article conveys some information:

Abstract: Nanographenes have kindled considerable interest in the fields of materials science and supramol. chem. as a result of their unique self-assembling and optoelectronic properties. Encapsulating the contorted nanographenes inside artificial receptors, however, remains challenging. Herein, we report the design and synthesis of a trigonal prismatic hexacationic cage, which has a large cavity and adopts a relatively flexible conformation. It serves as a receptor, not only for planar coronene, but also for contorted nanographene derivatives with diameters of approx. 15 Å and thicknesses of 7 Å. A comprehensive investigation of the host-guest interactions in the solid, solution and gaseous states by experimentation and theor. calculations reveals collectively an induced-fit binding mechanism with high binding affinities between the cage and the nanographenes. Notably, the photostability of the nanographenes is improved significantly by the ultrafast deactivation of their excited states within the cage. Encapsulating the contorted nanographenes inside the cage provides a noncovalent strategy for regulating their photoreactivity. The results came from multiple reactions, including the reaction of Tris(4-bromophenyl)amine(cas: 4316-58-9Recommanded Product: 4316-58-9)

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Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Yano, Masafumi; Inada, Yoshinori; Hayashi, Yuki; Nakai, Misaki; Mitsudo, Koichi; Kashiwagi, Yukiyasu published an article in Dyes and Pigments. The title of the article was 《Near-infrared absorption of a benzothiophene-appended triphenylamine radical cation: A novel molecular design of NIR-II dye》.Safety of Tris(4-bromophenyl)amine The author mentioned the following in the article:

A triphenylamine with 3 benzothiophene rings was designed and synthesized in 87% yield. The compound showed absorption at 386 nm and blue emission at ∼442 nm, with a fluorescence quantum yield of 0.57. The compound showed high thermostability. The radical cation obtained by 1-electron oxidation was stable in solution and showed a significant absorption in the NIR-II region (λmax = 1213 nm). DFT calculations confirmed the exptl. data. The experimental part of the paper was very detailed, including the reaction process of Tris(4-bromophenyl)amine(cas: 4316-58-9Safety of Tris(4-bromophenyl)amine)

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Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Mohamed, Mohamed Gamal; Mansoure, Tharwat Hassan; Samy, Maha Mohamed; Takashi, Yasuno; Mohammed, Ahmed A. K.; Ahamad, Tansir; Alshehri, Saad M.; Kim, Jeonghun; Matsagar, Babasaheb M.; Wu, Kevin C.-W.; Kuo, Shiao-Wei published an article in Molecules. The title of the article was 《Ultrastable Conjugated Microporous Polymers Containing Benzobisthiadiazole and Pyrene Building Blocks for Energy Storage Applications》.Application of 4316-58-9 The author mentioned the following in the article:

In recent years, conjugated microporous polymers (CMPs) have become important precursors for environmental and energy applications, compared with inorganic electrode materials, due to their ease of preparation, facile charge storage process, π-conjugated structures, relatively high thermal and chem. stability, abundance in nature, and high surface areas. Therefore, in this study, we designed and prepared new benzobisthiadiazole (BBT)-linked CMPs (BBT-CMPs) using a simple Sonogashira couplings reaction by reaction of 4,8-dibromobenzo(1,2-c;4,5-c′)bis(1,2,5)thiadiazole (BBT-Br2) with ethynyl derivatives of triphenylamine (TPA-T), pyrene (Py-T), and tetraphenylethene (TPE-T), resp., to afford TPA-BBT-CMP, Py-BBT-CMP, and TPE-BBT-CMP. The chem. structure and properties of BBT-CMPs such as surface areas, pore size, surface morphologies, and thermal stability using different measurements were discussed in detail. Among the studied BBT-CMPs, we revealed that TPE-BBT-CMP displayed high degradation temperature, up to 340 °C, with high char yield and regular, aggregated sphere based on thermogravimetric anal. (TGA) and SEM (SEM), resp. Furthermore, the Py-BBT-CMP as organic electrode showed an outstanding specific capacitance of 228 F g-1 and superior capacitance stability of 93.2% (over 2000 cycles). Based on theor. results, an important role of BBT-CMPs, due to their electronic structure, was revealed to be enhancing the charge storage. Furthermore, all three CMP polymers featured a high conjugation system, leading to improved electron conduction and small bandgaps. In the experiment, the researchers used Tris(4-bromophenyl)amine(cas: 4316-58-9Application of 4316-58-9)

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Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Hu, Xuefu; Wang, Zhiye; Su, Yuming; Chen, Peican; Jiang, Yibin; Zhang, Cankun; Wang, Cheng published an article in 2021. The article was titled 《Metal-Organic Layers with an Enhanced Two-Photon Absorption Cross-Section and Up-Converted Emission》, and you may find the article in Chemistry of Materials.Application of 4316-58-9 The information in the text is summarized as follows:

Two-photon absorption (TPA) of many chromophores can be enhanced by building them into the structure of metal-organic frameworks (MOFs). However, light scattering of MOFs defocuses the light beam and thus decreases the nonlinear optical effects like TPA. Nanoscale two-dimensional (2D) metal-organic layers (MOLs) are 2D analogs of MOFs with low light scattering. In this work, we obtained a MOL containing tri(4-carboxylic-biphenyl)-4′-amine (H3TCBPA) that exhibited a TPA cross-section of 13 000 ± 2000 GM, which is ~7 times that of the H3TCBPA ligand in homogeneous solution (1850 ± 200 GM). The MOL also gave bright up-converted fluorescence thanks to efficient TPA and a high fluorescence quantum yield. The theor. calculation showed that a large dipole moment of the excited state due to electron redistribution between the ligands and the metal-connecting nodes in the MOL is the reason for the TPA enhancement. This work illustrates MOLs as 2D materials with enhanced TPA for generating bright upconverted fluorescence. The experimental process involved the reaction of Tris(4-bromophenyl)amine(cas: 4316-58-9Application of 4316-58-9)

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Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Triphenylamine-based trinuclear Pt(II) complexes for solution-processed OLEDs displaying efficient pure yellow and red emissions》 was written by Sun, Yuanhui; Liu, Bochen; Guo, Yue; Feng, Zhao; Zhou, Guijiang; Chen, Zhao; Yang, Xiaolong. HPLC of Formula: 4316-58-9This research focused ontriphenylamine platinum complex OLED pure yellow red emission. The article conveys some information:

Highly efficient phosphors are critical in solution-processed organic light-emitting devices (OLEDs). Multinuclear Ir(III) complexes containing more than one metal center have showed great potential in fabricating high performance OLEDs, yet the electroluminescent (EL) properties of multinuclear Pt(II) complexes are rarely studied. In this work, two neutral trinuclear Pt(II) complexes are synthesized based on the triphenylamine core bearing three bidentate ligand arms. Both the yellow emitter (PyTPt) and deep-red emitter (IqTPt) exhibit improved photoluminescent quantum yields (PLQYs) compared with their corresponding mononuclear Pt(II) complexes. Furthermore, the PLQYs of PyTPt and IqTPt doped films are increased to 0.63 and 0.47, resp. The solution-processed pure yellow-emitting device based on PyTPt achieves impressively high external quantum efficiency (EQE), current efficiency (CE), and power efficiency (PE) of 16.92%, 56.74 cd/A and 29.09 lm W-1, resp., which are among the best performance reported for the OLEDs employing multinuclear Pt(II) complexes. The solution-processed device based on IqTPt shows pure red emission with the peak EQE approaching 9.0%. Both PyTPt and IqTPt display much higher EL efficiencies than their corresponding mononuclear Pt(II) complexes. This work demonstrates that it is an attritive strategy to develop multinuclear Pt(II) complexes for high-performance OLEDs. In the experiment, the researchers used many compounds, for example, Tris(4-bromophenyl)amine(cas: 4316-58-9HPLC of Formula: 4316-58-9)

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Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Photo- and Redox-active Benzofuran-appended Triphenylamine and Near-infrared Absorption of Its Radical Cation》 was written by Yano, Masafumi; Inada, Yoshinori; Hayashi, Yuki; Yajima, Tatsuo; Mitsudo, Koichi; Kashiwagi, Yukiyasu. SDS of cas: 4316-58-9This research focused ontris benzofuryl phenylamine preparation fluorescence DFT. The article conveys some information:

A tris[4-(2-benzofuryl)phenyl]amine was designed and successfully prepared in 64% yield. It exhibited absorption at 385 nm, and blue emission at around 440 nm with a fluorescence quantum yield of 0.57. Title compound showed high heat resistance and reversible one-electron oxidation Upon one-electron chem. oxidation, a near-IR absorption was revealed due to a persistent radical cation species. DFT calculations also supported the exptl. data. In addition to this study using Tris(4-bromophenyl)amine, there are many other studies that have used Tris(4-bromophenyl)amine(cas: 4316-58-9SDS of cas: 4316-58-9) was used in this study.

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Bromide – Wikipedia,
bromide – Wiktionary

Leech, Matthew C.; Petti, Alessia; Tanbouza, Nour; Mastrodonato, Andrea; Goodall, Iain C. A.; Ollevier, Thierry; Dobbs, Adrian P.; Lam, Kevin published an article in 2021. The article was titled 《Anodic Oxidation of Aminotetrazoles: A Mild and Safe Route to Isocyanides》, and you may find the article in Organic Letters.Quality Control of Tris(4-bromophenyl)amine The information in the text is summarized as follows:

A new electrochem. method for the preparation of isocyanides RN+C- (R = octyl, cyclohexylmethyl, 4-tert-butylphenyl, thiophen-2-ylmethyl, etc.) from easily accessible aminotetrazole derivatives I has been developed, which tolerates an unprecedented range of functional groups. The use of chem., rather than electrochem., oxidation to afford isocyanides was also demonstrated, which provides access to these compounds for those without electrosynthesis equipment. The practicality of scale-up using flow electrochem. has been demonstrated, in addition to the possibility of using electrochem. generated isocyanides in further reactions.Tris(4-bromophenyl)amine(cas: 4316-58-9Quality Control of Tris(4-bromophenyl)amine) was used in this study.

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Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Synergistic photoredox and copper catalysis by diode-like coordination polymer with twisted and polar copper-dye conjugation》 was published in Nature Communications in 2020. These research results belong to Shi, Yusheng; Zhang, Tiexin; Jiang, Xiao-Ming; Xu, Gang; He, Cheng; Duan, Chunying. Formula: C18H12Br3N The article mentions the following:

Synergistic photoredox and copper catalysis confers new synthetic possibilities in the pharmaceutical field, but is seriously affected by the consumptive fluorescence quenching of Cu(II). By decorating bulky auxiliaries into a photoreductive triphenylamine-based ligand to twist the conjugation between the triphenylamine-based ligand and the polar Cu(II)-carboxylate node in the coordination polymer, we report a heterogeneous approach to directly confront this inherent problem. The twisted and polar Cu(II)-dye conjunction endows the coordination polymer with diode-like photoelectronic behaviors, which hampers the inter- and intramol. photoinduced electron transfer from the triphenylamine-moiety to the Cu(II) site and permits reversed-directional ground-state electronic conductivity, rectifying the productive loop circuit for synergising photoredox and copper catalysis in pharmaceutically valuable decarboxylative C(sp3)-heteroatom couplings. The well-retained Cu(II) sites during photoirradiation exhibit unique inner-spheric modulation effects, which endow the couplings with adaptability to different types of nucleophiles and radical precursors under concise reaction conditions, and distinguish the multi-olefinic moieties of biointeresting steride derivatives in their late-stage trifluoromethylation-chloration difunctionalisation. The experimental process involved the reaction of Tris(4-bromophenyl)amine(cas: 4316-58-9Formula: C18H12Br3N)

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Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Zhu, Jinwei; Lou, Xiaoyu; Wang, Yubing; Xiong, Zhuo; Chen, Jie; Yan, Wei published an article in Chemical Engineering Science. The title of the article was 《Conjugated microporous poly(aniline)s for removal of low-concentration formaldehyde》.Electric Literature of C18H12Br3N The author mentioned the following in the article:

Removal of indoor formaldehyde is important but challenging due to the low concentration Here, we showed the applicability of a new class of conjugated microporous poly(aniline)s (CMPAs) in this formaldehyde capture. The unique properties of rich ultramicroporosity and benzenoid amine (-NH-) groups made the resulting CMPAs ideal platforms for the efficient low-concentration formaldehyde adsorption, through the interaction between benzenoid amine groups and formaldehyde via Mannich reaction and H-bond in the ultramicropore. They therefore exhibited ultrafast adsorption, receiving > 80% removal efficiency for ca 0.7 ppm formaldehyde within 60 min, and benchmarking storage capacity, achieving ∼2679.68 mg·g-1 for CMPA-2. Our CMPAs also worked well in a self-assembled air clean unit, keeping kinetically reducing average 98% of formaldehyde after treatment of 4000 BV polluted air (with ∼25 ppm formaldehyde) without break-through. Outcomes highlighted the potential of CMPAs for the clean-up of airborne formaldehyde for human health protection in next generation. In the experiment, the researchers used Tris(4-bromophenyl)amine(cas: 4316-58-9Electric Literature of C18H12Br3N)

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Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Li, Hanning; Yang, Yang; Jing, Xu; He, Cheng; Duan, Chunying published an article in 2021. The article was titled 《Multi-Component Metal-Organic Frameworks Significantly Boost Visible-Light-Driven Hydrogen Production Coupled with Selective Organic Oxidation》, and you may find the article in Chemistry – An Asian Journal.Recommanded Product: Tris(4-bromophenyl)amine The information in the text is summarized as follows:

Visible-light-driven hydrogen production coupled with selective organic oxidation has attracted increasing attention, as it not only provides clean and renewable energy, but also utilizes the other half reaction to achieve some value-added organic chems. Metal-organic frameworks based on metal clusters and organic ligands self-assembly give a perspective on the formation of multifunctional heterogeneous photocatalyst to significantly boost visible-light photocatalytic activities under mild conditions. By incorporating two types of photoactive units, tricarboxytriphenylamine (H3TCA) and tris(4-(pyridinyl)phenyl)amine (NPy3), into a single metal-organic frameworks, a multi-component MOF Co-MIX was obtained. With the redox active metal centers enabling the photoexcitation reduction of protons into hydrogen and the photogenerated holes promoting considerable oxidation of substrates, the resulting Co-MIX exhibits high catalytic activity for the photocatalytic hydrogen production coupled with selective oxidation of benzylamine or 1,2,3,4-tetrahydroisoquinoline. Importantly, the photocatalytic experiments of single-component Co-TCA and Co-NPy3 verified the pos. synergistic effects on stability and photocatalytic ability of the two ligands (H3TCA and NPy3) in one single MOF, revealing that the multi-component strategy is very important for the efficient charge separation and excellent photocatalytic activity of the catalyst. In the part of experimental materials, we found many familiar compounds, such as Tris(4-bromophenyl)amine(cas: 4316-58-9Recommanded Product: Tris(4-bromophenyl)amine)

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Referemce:
Bromide – Wikipedia,
bromide – Wiktionary