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Ring-Fused Cyclobutanes via Cycloisomerization of Alkylidenecyclopropane Acylsilanes

Chem. Sci., 2020, Accepted Manuscript
DOI: 10.1039/D0SC02224A, Edge Article
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Erick M Carreira, Sarah S Eichenberger, Moritz Hönig, Matthieu JR Richter, Renana Gershoni-Poranne
A novel Lewis acid-catalyzed cycloisomerization of alkylidenecyclopropane acylsilanes is disclosed. The readily available starting materials participate in tandem Prins addition/ring expansion/1,2-silyl shift to grant access to bicyclo[4.2.0]octanes and bicyclo[3.2.0]heptanes, which...
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Highly efficient non-doped blue fluorescent OLEDs with low efficiency roll-off based on hybridized local and charge transfer excited state emitters

Chem. Sci., 2020, Advance Article
DOI: 10.1039/D0SC01341B, Edge Article
Open Access
Xianhao Lv, Mizhen Sun, Lei Xu, Runzhe Wang, Huayi Zhou, Yuyu Pan, Shitong Zhang, Qikun Sun, Shanfeng Xue, Wenjun Yang
A new pure fluorescent blue HLCT-emitter was designed and synthesized. Highly efficient non-doped blue OLEDs with low efficiency roll-off were achieved.
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Pore engineering of ultrathin covalent organic framework membranes for organic solvent nanofiltration and molecular sieving

Chem. Sci., 2020, Advance Article
DOI: 10.1039/D0SC01679A, Edge Article
Open Access
Digambar B. Shinde, Li Cao, A. D. Dinga Wonanke, Xiang Li, Sushil Kumar, Xiaowei Liu, Mohamed N. Hedhili, Abdul-Hamid Emwas, Matthew Addicoat, Kuo-Wei Huang, Zhiping Lai
Pore surface engineering of ultrathin COF membranes by introducing different lengths of alkyl chains into the skeleton, which allows us to precisely control the pore size of COF membranes for OSN applications and molecular sieving.
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Asymmetric synthesis of primary amines catalyzed by thermotolerant fungal reductive aminases

Chem. Sci., 2020, Advance Article
DOI: 10.1039/D0SC02253E, Edge Article
Open Access
Juan Mangas-Sanchez, Mahima Sharma, Sebastian C. Cosgrove, Jeremy I. Ramsden, James R. Marshall, Thomas W. Thorpe, Ryan B. Palmer, Gideon Grogan, Nicholas J. Turner
Fungal reductive aminases as effective biocatalysts for the preparation of chiral primary amines.
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Rapidly Self-deoxygenating Controlled Radical Polymerization in water via in-situ Disproportionation of Cu(I)

Chem. Sci., 2020, Accepted Manuscript
DOI: 10.1039/D0SC01512A, Edge Article
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
David Haddleton, Evelina Liarou, Yisong Han, Marc Walker, Ana Sanchez
The first rapidly self-deoxygenating Cu-RDRP in aqueous media is investigated. The disproportionation of Cu(I)/Me6Tren in water towards Cu(II) and highly reactive Cu(0) leads to O2-free reaction environments within the first...
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Redox-responsive supramolecular polymeric networks having double-threaded inclusion complexes

Chem. Sci., 2020, 11,4322-4331
DOI: 10.1039/C9SC05589D, Edge Article
Open Access
Hikaru Aramoto, Motofumi Osaki, Subaru Konishi, Chiharu Ueda, Yuichiro Kobayashi, Yoshinori Takashima, Akira Harada, Hiroyasu Yamaguchi
A hydrogel actuator with a 1:2 host–guest complex controlled by redox stimuli has been developed to realize faster and larger deformation.
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General and selective synthesis of primary amines using Ni-based homogeneous catalysts

Chem. Sci., 2020, 11,4332-4339
DOI: 10.1039/D0SC01084G, Edge Article
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Kathiravan Murugesan, Zhihong Wei, Vishwas G. Chandrashekhar, Haijun Jiao, Matthias Beller, Rajenahally V. Jagadeesh
A Ni-triphos based homogeneous catalyst enabled the synthesis of all kinds of primary amines by reductive amination of carbonyl compounds with ammonia and hydrogenation of nitroarenes.
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SAXS studies of the thermally-induced fusion of diblock copolymer spheres: formation of hybrid nanoparticles of intermediate size and shape

Chem. Sci., 2020, 11,4312-4321
DOI: 10.1039/D0SC00569J, Edge Article
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
E. J. Cornel, P. S. O'Hora, T. Smith, D. J. Growney, O. O. Mykhaylyk, S. P. Armes
Dilute dispersions of poly(lauryl methacrylate)-poly(benzyl methacrylate) diblock copolymer spheres of differing mean diameter are mixed and thermally annealed at 150 °C to produce either spherical or non-spherical nanoparticles of intermediate size.
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An RGB-emitting molecular cocktail for the detection of bacterial fingerprints

Chem. Sci., 2020, 11,4403-4409
DOI: 10.1039/D0SC01704C, Edge Article
Open Access
Sheng Hong, Di-Wei Zheng, Qiu-Ling Zhang, Wei-Wei Deng, Wen-Fang Song, Si-Xue Cheng, Zhi-Jun Sun, Xian-Zheng Zhang
A technique named the Microcolor system was developed to detect microbes and diagnose diseases based on changes in microbiota signatures.
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A pH ratiometrically responsive surface enhanced resonance Raman scattering probe for tumor acidic margin delineation and image-guided surgery

Chem. Sci., 2020, 11,4397-4402
DOI: 10.1039/D0SC00844C, Edge Article
Open Access
Wenjia Duan, Qi Yue, Ying Liu, Yunfei Zhang, Qinghua Guo, Cong Wang, Shujie Yin, Dandan Fan, Wenjing Xu, Jiexian Zhuang, Jiachao Gong, Xinwei Li, Ruimin Huang, Liang Chen, Silvio Aime, Zhongliang Wang, Jianfeng Feng, Ying Mao, Xiao-Yong Zhang, Cong Li
A novel pH ratiometrically responsive surface-enhanced resonance Raman scattering (SERRS) probe was developed for tumor acidic margin delineation and image-guided surgery.
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What is the role of acid–acid interactions in asymmetric phosphoric acid organocatalysis? A detailed mechanistic study using interlocked and non-interlocked catalysts

Chem. Sci., 2020, 11,4381-4390
DOI: 10.1039/D0SC01026J, Edge Article
Open Access
Dennis Jansen, Johannes Gramüller, Felix Niemeyer, Torsten Schaller, Matthias C. Letzel, Stefan Grimme, Hui Zhu, Ruth M. Gschwind, Jochen Niemeyer
Supramolecular acid–acid interactions lead to competing monomeric and dimeric pathways in phosphoric acid catalysis – so that stereoselectivities depend on catalyst concentration.
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Tetrazine as a general phototrigger to turn on fluorophores

Chem. Sci., 2020, 11,4410-4415
DOI: 10.1039/D0SC01009J, Edge Article
Open Access
Axel Loredo, Juan Tang, Lushun Wang, Kuan-Lin Wu, Zane Peng, Han Xiao
Tetrazine was demonstrated for the first time as a general phototrigger to design photoactivatable fluorophore probes.
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Machine-enabled inverse design of inorganic solid materials: promises and challenges

Chem. Sci., 2020, Advance Article
DOI: 10.1039/D0SC00594K, Minireview
Open Access
Juhwan Noh, Geun Ho Gu, Sungwon Kim, Yousung Jung
The grand challenge of materials science, discovery of novel materials with target properties, can be greatly accelerated by machine-learned inverse design strategies.
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Mapping the multi-step mechanism of a photoredox catalyzed atom-transfer radical polymerization reaction by direct observation of the reactive intermediates

Chem. Sci., 2020, 11,4475-4481
DOI: 10.1039/D0SC01194K, Edge Article
Open Access
Luke Lewis-Borrell, Mahima Sneha, Aditi Bhattacherjee, Ian P. Clark, Andrew J. Orr-Ewing
Short-lived intermediates are tracked in real-time by transient absorption spectroscopy during a multi-step photoredox catalysed polymerization reaction.
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Chemical control of competing electron transfer pathways in iron tetracyano-polypyridyl photosensitizers

Chem. Sci., 2020, 11,4360-4373
DOI: 10.1039/C9SC06272F, Edge Article
Open Access
Kristjan Kunnus, Lin Li, Charles J. Titus, Sang Jun Lee, Marco E. Reinhard, Sergey Koroidov, Kasper S. Kjær, Kiryong Hong, Kathryn Ledbetter, William B. Doriese, Galen C. O'Neil, Daniel S. Swetz, Joel N. Ullom, Dale Li, Kent Irwin, Dennis Nordlund, Amy A. Cordones, Kelly J. Gaffney
Photoinduced intramolecular electron transfer in Fe tetracyano-polypyridyl complexes was investigated with static and time-resolved UV-visible absorption and resonant inelastic X-ray scattering which revealed a competition of two relaxation pathways.
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Multifunctional streptavidin–biotin conjugates with precise stoichiometries

Chem. Sci., 2020, 11,4422-4429
DOI: 10.1039/D0SC01589J, Edge Article
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Dongdong Xu, Seraphine V. Wegner
Multifunctional streptavidin-biotin conjugates with defined stoichiometry and number of open binding pockets provide molecularly precise alternatives to the statistical mixture of products that typically forms.
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Enantioselective total synthesis of (−)-myrifabral A and B

Chem. Sci., 2020, Advance Article
DOI: 10.1039/D0SC01141J, Edge Article
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Tyler J. Fulton, Anthony Y. Chen, Michael D. Bartberger, Brian M. Stoltz
A catalytic enantioselective approach to the Myrioneuron alkaloids (−)-myrifabral A and (−)-myrifabral B is described.
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Synthesis and properties of hypervalent electron-rich pentacoordinate nitrogen compounds

Chem. Sci., 2020, Advance Article
DOI: 10.1039/D0SC00002G, Edge Article
Open Access
Chenting Yan, Masato Takeshita, Jun-ya Nakatsuji, Akihiro Kurosaki, Kaoko Sato, Rong Shang, Masaaki Nakamoto, Yohsuke Yamamoto, Yohei Adachi, Ko Furukawa, Ryohei Kishi, Masayoshi Nakano
Structural characterization of hypervalent electron-rich pentacoordinate nitrogen species has long been a synthetic challenge. Here we report the first nitrogen cationic radical (11-N-5) species featuring a weak hypervalent 3c-5e interaction.
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Geometric landscapes for material discovery within energy–structure–function maps

Chem. Sci., 2020, Advance Article
DOI: 10.1039/D0SC00049C, Edge Article
Open Access
Seyed Mohamad Moosavi, Henglu Xu, Linjiang Chen, Andrew I. Cooper, Berend Smit
We introduce a representation for the geometric features of the pores of porous molecular crystals. This representation provides a good basis for supervised (predict adsorption properties) and unsupervised (polymorph classification) tasks.
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Ultraviolet photochemistry of ethane: implications for the atmospheric chemistry of the gas giants

Chem. Sci., 2020, Advance Article
DOI: 10.1039/D0SC01746A, Edge Article
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Yao Chang, Jiayue Yang, Zhichao Chen, Zhiguo Zhang, Yong Yu, Qingming Li, Zhigang He, Weiqing Zhang, Guorong Wu, Rebecca A. Ingle, Matthew Bain, Michael N. R. Ashfold, Kaijun Yuan, Xueming Yang, Christopher S. Hansen
The vacuum ultraviolet photodissociation dynamics of ethane provide clues for modelling the atmospheric chemistry of the gas giants.
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Determination of protein-ligand binding modes using fast multi-dimensional NMR with hyperpolarization

Chem. Sci., 2020, Accepted Manuscript
DOI: 10.1039/D0SC00266F, Edge Article
Open Access
Yunyi Wang, Jihyun Kim, Christian Hilty
Elucidation of small molecule-protein interactions provides essential information for understanding biological processes such as cellular signaling, as well as for rational drug development. Here, multi-dimensional NMR with sensitivity enhancement by...
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Quinone Methide Dimers Lacking Labile Hydrogen Atoms Are Surprisingly Excellent Radical-Trapping Antioxidants

Chem. Sci., 2020, Accepted Manuscript
DOI: 10.1039/D0SC02020F, Edge Article
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Derek A. Pratt, Mark A R Raycroft, Jean-Philippe R Chauvin, Matthew Galliher, Kevin Romero, Corey Stephenson
Hydrogen atom transfer (HAT) is the mechanism by which the vast majority of radical-trapping antioxidants (RTAs), such as hindered phenols, inhibit autoxidation. As such, at least one weak O–H bond...
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Synthesis of unstrained Criegee intermediates: inverse α-effect and other protective stereoelectronic forces can stop Baeyer-Villiger rearrangement of γ-hydroperoxy-γ-peroxylactones

Chem. Sci., 2020, Accepted Manuscript
DOI: 10.1039/D0SC01025A, Edge Article
Open Access
Vera A. Vil', Yana Barsegyan, Leah Kuhn, Maria V. Ekimova, Egor A. Semenov, Alexander Korlyukov, Alexander Olegovich Terent'ev, Igor Alabugin
How far can we push the limits in removing stereoelectronic protection from an unstable intermediate? We address this question by exploring the interplay between the primary and secondary stereoelectronic effects...
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Vibrational characterization of a diiron bridging hydride complex – a model for hydrogen catalysis

Chem. Sci., 2020, Accepted Manuscript
DOI: 10.1039/D0SC01290D, Edge Article
Open Access
Leland Bruce Gee, Vladimir Pelmenschikov, Hongxin Wang, Nakul Mishra, Yu-Chiao Liu, Yoshitaka Yoda, Kenji TAMASAKU, Ming-Hsi Chiang, Stephen P Cramer
A diiron complex containing a bridging hydride and a protonated terminal thiolate of the form [(μ,κ2-bdtH)(μ-PPh2)(μ-H)Fe2(CO)5]+ has been investigated through 57Fe nuclear resonance vibrational spectroscopy (NRVS) and interpreted using density...
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Direct and quantitative monitoring of catalytic organic reactions under heterogeneous conditions using direct analysis in real time mass spectrometry

Chem. Sci., 2020, Advance Article
DOI: 10.1039/D0SC00021C, Edge Article
Open Access
Koichiro Masuda, Shū Kobayashi
A direct and quantitative method for monitoring heterogeneous organic reactions has been developed by using direct analysis in real time mass spectrometry (DART-MS) with an isotope-labeled reaction product as an internal standard.
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Cancer cell discrimination and dynamic viability monitoring through wash-free bioimaging using AIEgens

Chem. Sci., 2020, Advance Article
DOI: 10.1039/D0SC01213K, Edge Article
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Ruoyao Zhang, Guangle Niu, Qing Lu, Xiaolin Huang, Joe H. C. Chau, Ryan T. K. Kwok, Xiaoqiang Yu, Min-Hui Li, Jacky W. Y. Lam, Ben Zhong Tang
We present a series of AIEgens for cancer cell discrimination and dynamic viability monitoring.
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The Role of Porphyrin Peripheral Substituents in Determining the Reactivities of Ferrous Nitrosyl Species

Chem. Sci., 2020, Accepted Manuscript
DOI: 10.1039/D0SC01625J, Edge Article
Open Access
Sk Amanullah, Abhishek Dey
Ferrous nitrosyl {FeNO}7 species are intermediates common to the catalytic cycles of Cd1NiR and CcNiR, two heme-based nitrite reductases (NiR), and its reactivity vary dramatically in these enzymes. The former...
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A time-domain view of charge carriers in semiconductor nanocrystal solids

Chem. Sci., 2020, Advance Article
DOI: 10.1039/C9SC05925C, Perspective
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Wenbi Shcherbakov-Wu, William A. Tisdale
Time-domain spectroscopy and transient photocurrent techniques have revealed new understanding of mesoscale carrier dynamics in nanocrystal solids, including the role of energetic disorder, interactions with trap states, and nonequilibrium dynamics
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It's not the right stage to put differential premium on banks: Finance Secy

Finance minister had announced hiking the deposit insurance limit to Rs 5 lakh for each bank depositor




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09/22:00 CST Marine Wind Warning Summary for South Australia




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Patna: Schools to say ‘no’ to gatherings

Schools are not likely to be the same when they reopen after the lockdown ends. Most of them will not conduct morning assemblies, sports activities, cultural events, seminars and parent-teacher meets for several months in order to ensure social distancing norms.




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Now, write letters & send cards to Covid warriors

Writing letters may have become a passé, but thanks to the initiative of Patna postal division, many city residents are now thanking corona warriors by sending them personal handwritten letters or greeting cards.




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Bihar youth beaten to death by girlfriend's kin

An 18-year-old youth was held captive and subsequently beaten to death by the family members of a minor girl in a case of honour killing at a village in Vaishali district early on Friday.




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Is it possible to enter an IPO bid below floor price?

Floor price is the minimum price at which bids can be made for offer.




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Who are intermediaries in an IPO?

All the relevant information regarding the four intermediates such as addresses, telephone/fax numbers, registration number, and contact person and email addresses, are disclosed in the offer documents.




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What is the cut-off price?

It is different from a floor price, which is the minimum price at which bids can be made.




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What is draft red herring prospectus?

The document clarifies the reason why the company wants to raise money from the public, how the money will be used and risks involved in investing in the company.




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Who decides the price band of an IPO?

For the announcement of the price band and the bid offer period, working day means all days, excluding all Saturdays, Sundays and public holidays on which commercial banks in Mumbai are open for business.




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Laxmi Goldorna IPO overall subscribed 1.15 times

The company would be listed on NSE EMERGE after the lockdown is eased.




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Sebi extends regulatory approval validity for IPO, rights issue by 6 months

Sebi's observation is necessary for any company to launch public issues.




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Academic culture : a student's guide to studying at university / Jean Brick, Maria Herke, Deanna Wong ; editor: Laura Davies

Brick, Jean, author




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International guide to student achievement / edited by John Hattie, Eric M. Anderman




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Interim report : first steps for improving educational opportunities for Aboriginal and Torres Strait Islander students / House of Representatives Standing Committee on Indigenous Affairs

Australia. Parliament. House of Representatives. Standing Committee on Indigenous Affairs, author, issuing body




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The Humboldtian tradition : origins and legacies / edited by Peter Josephson, Thomas Karlsohn, Johan Östling




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Teaching and learning for the twenty-first century : educational goals, policies, and curricula from six nations / Fernando M. Reimers, Connie K. Chung, editors




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The silent university : towards a transversal pedagogy / edited by Florian Malzacher, Ahmet Ögüt, Pelin Tan




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Observation [videorecording] : the developing child / Magna Systems, Inc. ; program producers, Shanta and Milan Herzog ; design and script, Janet Gonzalez-Mena ; editor, Susan Jenkins




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Wondrous words : writers and writing in the elementary classroom / Katie Wood Ray

Ray, Katie Wood, 1964- author




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Alternatives to privatizing public education and curriculum : Festschrift in honor of Dale D. Johnson / by Daniel Ness & Stephen J. Farenga




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The Giroux reader / by Henry A. Giroux ; edited and introduced by Christopher G. Robbins

Giroux, Henry A., author