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A strategy for generating aryl radicals from arylborates through organic photoredox catalysis: photo-Meerwein type arylation of electron-deficient alkenes

24-Jan-2018 | Y. Iwata; Y. Tanaka; S. Kubosaki; T. Morita; Y. Yoshimi, Chemical Communication, 2018

Photoinduced reactions of arylboronic acids with electron deficient alkenes under mild organic photoredox catalysis conditions lead to the formation of Meerwein arylation type adducts via the generation of aryl radicals.


Copper-Catalyzed Reaction of 3‑Diazoindolin-2-imines with 2-(Phenylamino)ethanols: Convenient Access to Spiro[indoline-3,2'-oxazolidin]-2-imines

23-Jan-2018 | Guorong Sheng; Shicong Ma; Songlin Bai; Jianming Mao; Ping Lu; Yanguang Wang, Chemical Communication, 2018

3-Diazoindolin-2-imines reacted with chiral 2-(phenylamino)ethanols under copper catalysis to furnish chiral spiro[indoline-3,2'-oxazolidin]-2-imines in good yields with excellent diastereoselectivity. The reaction undergoes a copper-catalyzed cascade process involving the formation of copper ...


Kinetic and thermodynamic analysis of triplex formation between peptide nucleic acid and double-stranded RNA

23-Jan-2018 | Takaya Sato; Naonari Sakamoto; Seiichi Nishizawa, Organic & Biomolecular Chemistry, 2018

Kinetics and thermodynamics of triplex formation between 9-mer homopyrimidine PNA (H2N-Lys-TCTCCTCCC-CONH2) and double-stranded RNA (dsRNA, 5’-AGAGGAGGG-3’/3’-UCUCCUCCC-5’) at acidic pH were studied by means of a stopped-flow technique and isothermal titration calorimetry (ITC). These results ...


Control of the optical properties of cadmium selenide nanoparticles using magadiite

23-Jan-2018 | Poonsuk Poosimma; Areeporn Ontam; Sonchai Intachai; Nithima Khaorapapong; Makoto Ogawa, Dalton Transactions, 2018

The preparation of cadmium selenide nanoparticles in the interlayer space of magadiite, a layered sodium silicate, modified with the cetyltrimethylammonium cation was studied. The preparation was based on the formation of cadmium selenide by the reaction between the cetyltrimethylammonium ...


Monitoring the formation of PtNi nanoalloys supported on hollow graphitic spheres using in situ pair distribution function analysis

23-Jan-2018 | Ş. Ortatatlı; J. Knossalla; F. Schüth; C. Weidenthaler, Physical Chemistry Chemical Physics, 2018

This article aims to address the formation and the structural disordering/ordering phenomena of PtNi nanoalloys supported on hollow graphitic spheres (HGSs) using pair distribution function (PDF) analysis under ex situ/in situ data collection conditions. Starting from small nanoparticles (10–15 Å ...


Template-free synthesis of Co3O4 nanorings and their catalytic application

23-Jan-2018 | Huihui Chen; Mei Yang; Sha Tao; Guangwen Chen, CrystEngComm, 2018

A facile, template-free and easily scalable approach has been developed for the preparation of Co3O4 nanorings, which can be divided into two stages: (1) formation of CoOOH nanorings and (2) high-temperature calcination of CoOOH nanorings in air. The key step for the synthesis of Co3O4 nanorings ...


Formation of trinitromethyl functionalized 1,2,4-triazole-based energetic ionic salts and a zwitterionic salt directed by a intermolecular and intramolecular metathesis strategy

23-Jan-2018 | Qing Ma; Hao Gu; Jinglun Huang; Fude Nie; Guijuan Fan; Longyu Liao; Wei Yang, New Journal of Chemistry, 2018

Ionic salts of 5,5’-bis(trinitromethyl)-3,3’-bi-1H-1,2,4-triazole and an unexpected energetic zwitterion 5-diazonium-3-trinitromethyl-1,2,4-triazolate were synthesized by a intermolecular and intramolecular metathesis strategy. Compared with its ammonium (6), hydrazinium (7) and hydroxylammonium ...


Looking at new ligands for chelation therapy

23-Jan-2018 | Valeria Marina Marina Nurchi; Maria de Guadalupe Jaraquemada-Pelaez; Joanna Izabela Izabela Lachowicz; Maria Antonie ..., New Journal of Chemistry, 2018

This work reports the synthesis, characterization and study of complex formation equilibria of four new bis-kojic acid chelators with Fe3+, Al3+, Cu2+ and Zn2+. Based on previous encouraging results with tetradentate kojic acid derivatives, these ligands were designed with the aim of evaluating ...


How small amounts of Ge modify the formation pathways and crystallization of kesterites

23-Jan-2018 | S. Giraldo; E. Saucedo; M. Neuschitzer; F. Oliva; M. Placidi; X. Alcobé; V. Izquierdo-Roca; S. Kim; H. Tampo; H ..., Energy & Environmental Science, 2018

The inclusion of Ge into the synthesis of Cu2ZnSn(S,Se)4 absorbers for kesterite solar cells has been proven to be a very efficient way to boost the device efficiency in a couple of recent publications. This highlights the importance to elucidate the mechanisms by which Ge improves the kesterite ...


Label-free detection of fibrinogen based on the fibrinogen-enhanced peroxidase activity of a fibrinogen–hemin composite

23-Jan-2018 | Tingting Hou; Yuanfu Zhang; Tao Wu; Meifeng Wang; Yinghong Zhang; Rui Li; Lei Wang; Qingwang Xue; Shuhao Wang, Analyst, 2018

A simple, label-free colorimetric method for the determination of fibrinogen (Fib) in plasma is presented. In this work, it was observed that Fib interacted with hemin to form a hemin–Fib composite. Because Fib prevented hemin from the formation of m-oxo-dimers, the hemin–Fib composite possesses ...


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