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1. A new metallic π-conjugated carbon sheet used for the cathode of Li–S batteries

Author:
Zeng, Li; Cai, Yingxiang; Xiang, Zhihao; Zhang, Yu; Xu, Xuechun
Source:
RSC advances 2018 v.9 no.1 pp. 92-98
ISSN:
2046-2069
Subject:
batteries; cathodes; graphene; heat; sulfur; tensile strength; thermal conductivity
Abstract:
... Lithium–sulfur (Li–S) batteries are considered as the most promising next generation high density energy storage devices. However, the commercialization of Li–S batteries is hindered by the shuttle effect of polysulfides, the low electronic conductivity of the sulfur cathode and a large volume expansion during lithiation. Herein, we predict a new two dimensional sp² hybridized carbon allotrope (PH ...
DOI:
10.1039/c8ra07074a

2. Anti-phytopathogenic sesquiterpenoid-xanthone adducts from potato endophytic fungus Bipolaris eleusines

Author:
He, Juan; Yang, Man-Si; Wang, Wen-Xiang; Li, Zheng-Hui; Elkhateeb, Waill Ahmed Mohamed; Wen, Ting-Chi; Ai, Hong-Lian; Feng, Tao
Source:
RSC advances 2018 v.9 no.1 pp. 128-131
ISSN:
2046-2069
Subject:
Alternaria solani; Bipolaris; endophytes; fungi; minimum inhibitory concentration; potatoes; spectral analysis
Abstract:
... A bioguided separation on the cultures of the potato endophytic fungus Bipolaris eleusines led to the isolation of two anti-phytopathogenic (Alternaria solani) sesquiterpenoid-xanthone adducts, namely bipolins I and J (1 and 2). Their structures were established via extensive spectroscopic analysis. Compounds 1 and 2 exhibit potent inhibitory activity against A. solani with MIC values of 8 and 16 ...
DOI:
10.1039/c8ra09861a

3. A vapor-phase-assisted growth route for large-scale uniform deposition of MoS₂ monolayer films

Author:
Pareek, Devendra; Gonzalez, Marco A.; Zohrabian, Jannik; Sayed, Mohamed H.; Steenhoff, Volker; Lattyak, Colleen; Vehse, Martin; Agert, Carsten; Parisi, Jürgen; Schäfer, Sascha; Gütay, Levent
Source:
RSC advances 2018 v.9 no.1 pp. 107-113
ISSN:
2046-2069
Subject:
Raman spectroscopy; hydrogen sulfide; molybdenum disulfide; photoluminescence; temperature
Abstract:
... In this work a vapor-phase-assisted approach for the synthesis of monolayer MoS₂ is demonstrated, based on the sulfurization of thin MoO₃₋ₓ precursor films in an H₂S atmosphere. We discuss the co-existence of various possible growth mechanisms, involving solid–gas and vapor–gas reactions. Different sequences were applied in order to control the growth mechanism and to obtain monolayer films. These ...
DOI:
10.1039/c8ra08626e

4. Correction: Designing a novel tetradentate polyoxometalate eco-catalyst for the synthesis of β-aminocyclohexanone derivatives in water

Author:
Mozafari, Roya; Heidarizadeh, Fariba; Azaroon, Maedeh
Source:
RSC advances 2018 v.9 no.1 pp. 215
ISSN:
2046-2069
Subject:
catalysts; chemical reactions; metals; organic compounds
Abstract:
... Correction for ‘Designing a novel tetradentate polyoxometalate eco-catalyst for the synthesis of β-aminocyclohexanone derivatives in water’ by Roya Mozafari et al., RSC Adv., 2018, 8, 40261–40266. ...
DOI:
10.1039/c8ra90101e

5. Correction: Efficient in situ N-heterocyclic carbene palladium(ii) generated from Pd(OAc)₂ catalysts for carbonylative Suzuki coupling reactions of arylboronic acids with 2-bromopyridine under inert conditions leading to unsymmetrical arylpyridine ketones: synthesis, characterization and cytotoxic activities

Author:
Touj, Nedra; Al-Ayed, Abdullah S.; Sauthier, Mathieu; Mansour, Lamjed; Harrath, Abdel Halim; Al-Tamimi, Jameel; Özdemir, Ismail; Yaşar, Sedat; Hamdi, Naceur
Source:
RSC advances 2018 v.9 no.2 pp. 675
ISSN:
2046-2069
Subject:
acids; carbenes; catalysts; cytotoxicity; heterocyclic nitrogen compounds; ketones; palladium
Abstract:
... Correction for ‘Efficient in situ N-heterocyclic carbene palladium(ii) generated from Pd(OAc)₂ catalysts for carbonylative Suzuki coupling reactions of arylboronic acids with 2-bromopyridine under inert conditions leading to unsymmetrical arylpyridine ketones: synthesis, characterization and cytotoxic activities’ by Nedra Touj et al., RSC Adv., 2018, 8, 40000–40015. ...
DOI:
10.1039/c8ra90103a

6. Correction: Quantum curcumin mediated inhibition of gingipains and mixed-biofilm of Porphyromonas gingivalis causing chronic periodontitis

Author:
Singh, Ashish Kumar; Yadav, Shivangi; Sharma, Kavyanjali; Firdaus, Zeba; Aditi, Prerana; Neogi, Kaushik; Bansal, Monika; Gupta, Munesh Kumar; Shanker, Asheesh; Singh, Rakesh Kumar; Prakash, Pradyot
Source:
RSC advances 2018 v.9 no.1 pp. 91
ISSN:
2046-2069
Subject:
Porphyromonas gingivalis; curcumin; periodontitis
Abstract:
... Correction for ‘Quantum curcumin mediated inhibition of gingipains and mixed-biofilm of Porphyromonas gingivalis causing chronic periodontitis’ by Ashish Kumar Singh et al., RSC Adv., 2018, 8, 40426–40445. ...
DOI:
10.1039/c8ra90104j

7. Imidazolyl activated carbon refluxed with ethanediamine as reusable heterogeneous catalysts for Michael addition

Author:
Liu, Wenzhu; Xiao, Jiafu; Xu, Qiong; Liu, Xianxiang; Zhong, Sheng; Huang, Hua; Zheng, Min; Kirk, Steven Robert; Yin, Dulin
Source:
RSC advances 2018 v.9 no.1 pp. 185-191
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; carbon; catalysts; catalytic activity; furfural; imidazoles; moieties; nitric acid; nitrogen content; oxidation; potassium hydroxide; titration
Abstract:
... Imidazolyl activated carbon, denoted as AC-N, was prepared via oxidation of AC with HNO₃ (AC-O) and then refluxed with ethanediamine under mild conditions. The results showed that the N content of AC-N was 10.3%, and the surface alkali group density of AC-N was 0.96 mmol g⁻¹ from 0.78 mmol g⁻¹ carboxy group of AC-O by Boehm titration. It was revealed that the basic functional groups on the AC-N su ...
DOI:
10.1039/c8ra09457h

8. Improvement of high-glucose and insulin resistance of chromium malate in 3T3-L1 adipocytes by glucose uptake and insulin sensitivity signaling pathways and its mechanism

Author:
Feng, Weiwei; Liu, Yongchao; Fei, Fan; Chen, Yao; Ding, Yangyang; Yan, Mengjiao; Feng, Yun; Zhao, Ting; Mao, Guanghua; Yang, Liuqing; Wu, Xiangyang
Source:
RSC advances 2018 v.9 no.1 pp. 114-127
ISSN:
2046-2069
Subject:
adipocytes; animal disease models; chromium; glucose; glycemic effect; insulin resistance; malates; messenger RNA; noninsulin-dependent diabetes mellitus; phosphatidylinositol 3-kinase; phosphorylation; proteins; rats; signal transduction
Abstract:
... Previous study has revealed that chromium malate could improve insulin resistance and the regulation of fasting blood glucose in type 2 diabetic rats. This study was designed to investigate the effect of chromium malate on hypoglycemic and improve insulin resistance activities in 3T3-L1 adipocytes with insulin resistance and investigate the acting mechanism. The result indicated that chromium mala ...
DOI:
10.1039/c8ra07470d

9. Janus nanofiber array pellicle: facile conjugate electrospinning construction, structure and bifunctionality of enhanced green fluorescence and adjustable magnetism

Author:
Wang, Guoyi; Ma, Qianli; Tian, Jiao; Fan, Libing; Li, Dan; Dong, Xiangting; Yu, Wensheng; Wang, Jinxian; Liu, Guixia
Source:
RSC advances 2018 v.9 no.1 pp. 206-214
ISSN:
2046-2069
Subject:
fluorescence; iron oxides; magnetism; manufacturing; medicine; nanofibers; nanoparticles; pyrrolidones; spinning; viscosity
Abstract:
... A [Fe₃O₄/polyvinyl pyrrolidone (PVP)]//[Tb(BA)₃phen/PVP] Janus nanofiber array pellicle (denoted JNAP) was successfully constructed by facile conjugate electrospinning without twisting for the first time. The JNAP offers the dual-functionality of fluorescence and magnetism. This technology entirely solves the dilemma of the magnetic spinning dope and fluorescent spinning dope being easily mixed to ...
DOI:
10.1039/c8ra08588a

10. Light-triggered hydrophilic drug release from liposomes through removal of a photolabile protecting group

Author:
Goto, Yuya; Ueda, Masafumi; Sugikawa, Kouta; Yasuhara, Kazuma; Ikeda, Atsushi
Source:
RSC advances 2018 v.9 no.1 pp. 166-171
ISSN:
2046-2069
Subject:
benzylpenicillin; drugs; hydrophilicity; hydrophobicity; photoirradiation
Abstract:
... The antibiotic penicillin G cannot be completely incorporated into hydrophobic lipid-membranes owing to its hydrophilicity. Through modification with a hydrophobic and photolabile protecting group, penicillin G was effectively incorporated into liposomes and released by photoirradiation at 365 nm. ...
DOI:
10.1039/c8ra08584f

11. miR-425 suppresses EMT and the development of TNBC (triple-negative breast cancer) by targeting the TGF-β 1/SMAD 3 signaling pathway

Author:
Liu, Yingping; Chen, Jinglong
Source:
RSC advances 2018 v.9 no.1 pp. 151-165
ISSN:
2046-2069
Subject:
3' untranslated regions; breast neoplasms; cell proliferation; enzyme activity; epithelial cells; human cell lines; humans; luciferase; metastasis; mice; microRNA; models; neoplasm cells; signal transduction; therapeutics; tissues; transforming growth factor beta 1
Abstract:
... Background: EMT has a crucial effect on the progression and metastasis of tumors. This work will elucidate the role of miR-425 in EMT and the development of TNBC. Methods: The differential miRNA expression among non-tumor, para-tumor (adjacent tissue of tumor) and tumor tissues was analyzed. The luciferase activities of TGF-β1 3′UTR treated with miR-425 were determined. Then human breast cancer ce ...
DOI:
10.1039/c8ra08872a

12. Secondary metabolites (SMs) of Isaria cicadae and Isaria tenuipes

Author:
Zhang, Xiaofeng; Hu, Qiongbo; Weng, Qunfang
Source:
RSC advances 2018 v.9 no.1 pp. 172-184
ISSN:
2046-2069
Subject:
Isaria; adverse effects; amino acids; benzopyrans; edible fungi; entomopathogenic fungi; health foods; herbal medicines; nucleosides; secondary metabolites; surveys; toxicity; trichothecenes; East Asia
Abstract:
... Both Isaria cicadae and Isaria tenuipes are important entomopathogenic fungi used in health foods and traditional herbal medicines in East Asia. However, the safety concerns for both fungal species have been attracting significant attention. Thus, surveying their secondary metabolites (SMs) will be beneficial to improving the safety of their fungal products. In the case of I. cicadae, its SMs main ...
DOI:
10.1039/c8ra09039d

13. Study on the effect of PolyFR and its FR system on the flame retardancy and foaming behavior of polystyrene

Author:
Wang, Yaqiao; Jiang, Hanchuan; Ni, Jingyue; Chen, Jianze; Zhou, Hongfu; Wang, Xiangdong; Xin, Fei
Source:
RSC advances 2018 v.9 no.1 pp. 192-205
ISSN:
2046-2069
Subject:
bromination; burning; calorimetry; combustion; droplets; fire resistance; flame retardants; foaming; free radicals; graphene; heat; hydrobromic acid; hydrotalcite; mixing; montmorillonite; oxygen; polystyrenes; scanning electron microscopy; stabilizers; thermal stability; thermogravimetry
Abstract:
... A new class of brominated polymeric flame retardant (PolyFR) which is a kind of environmental FR was researched. Hydrotalcite (HT), applied as an environmentally-friendly heat stabilizer for PolyFR, was investigated by thermogravimetric analysis (TGA). It presented the result that no more than 0.15% HT significantly improved the thermal stability during processing but excessive HT would weaken the ...
DOI:
10.1039/c8ra09680e

14. The influence of cell morphology on microfluidic single cell analysis

Author:
Zhang, Xuxin; Li, Yanzhao; Fang, Hanshu; Wei, Hongquan; Mu, Ying; Lang, Ming-Fei; Sun, Jing
Source:
RSC advances 2018 v.9 no.1 pp. 139-144
ISSN:
2046-2069
Subject:
glioblastoma; image analysis; microfluidic technology; protein synthesis; proteins; signal transduction
Abstract:
... Microfluidics has been widely used in single cell analysis. Current protocols allow either spread or round cells to be analyzed. However, the contribution of cell morphology to single cell analysis has not been noted. In this study, four proteins (EGFR, PTEN, pAKT, and pS6) in the EGFR signaling pathway are measured simultaneously using microfluidic image cytometry (MIC) in glioblastoma cells U87. ...
DOI:
10.1039/c8ra08303g

15. The regeneration of Fe-EDTA denitration solutions by nanoscale zero-valent iron

Author:
Jiang, Wei; Wang, Xiaolong; Xu, Qiang; Xiao, Jianbai; Wei, Xionghui
Source:
RSC advances 2018 v.9 no.1 pp. 132-138
ISSN:
2046-2069
Subject:
EDTA (chelating agent); absorbents; absorption; acidity; active sites; iron; nitric oxide; oxygen; pH
Abstract:
... Fe(ii) ethylenediaminetetraacetate (EDTA) chelate solution is generally considered to be an effective nitric oxide (NO) absorbent. However, since the ferrous active site is occupied by nitric oxide and the ferrous chelate is oxidized to ferric chelate by oxygen in air, its absorption capacity will gradually decrease with the NO absorption process. Here, we propose a method for regenerating the NO- ...
DOI:
10.1039/c8ra08992b

16. Uniform nanoporous graphene sponge from natural polysaccharides as a metal-free electrocatalyst for hydrogen generation

Author:
Niu, Jinan; Domenech-Carbó, Antonio; Primo, Ana; Garcia, Hermenegildo
Source:
RSC advances 2018 v.9 no.1 pp. 99-106
ISSN:
2046-2069
Subject:
alginates; capacitance; chitosan; electrochemistry; graphene; hydrogen production; nanopores; silica; surface area
Abstract:
... Structuring of graphene as graphene sponges in the submicrometric scale has been achieved by using silica spheres (80 nm diameter) as hard templates and chitosan or alginate as precursor of defective N-doped or undoped graphene, respectively. The resulting defective N-doped graphene sponge exhibits a remarkable activity and stability for hydrogen evolution reaction with onset at 203 mV for a curre ...
DOI:
10.1039/c8ra08745h

17. Versatile cross-linked fatty acid-based polycarbonate networks obtained by thiol–ene coupling reaction

Author:
Durand, Pierre-Luc; Chollet, Guillaume; Grau, Etienne; Cramail, Henri
Source:
RSC advances 2018 v.9 no.1 pp. 145-150
ISSN:
2046-2069
Subject:
crosslinking; glass transition temperature; olefin; storage modulus; thiols
Abstract:
... Bio-sourced polycarbonate networks have been synthesized from an alkene-functional fatty-acid based polycarbonate precursor. Cross-linked networks were created using the radical thiol–ene coupling reaction. The resulting polycarbonate materials exhibited versatile properties either influenced by the structure of the cross-linker or the cross-linker/olefin unit ratio. Indeed, the storage modulus ab ...
DOI:
10.1039/c8ra07157h

18. Application of dehydroalanine as a building block for the synthesis of selenocysteine-containing peptides

Author:
Reddy, Kishorkumar M.; Mugesh, Govindasamy
Source:
RSC advances 2018 v.9 no.1 pp. 34-43
ISSN:
2046-2069
Subject:
active sites; catalytic activity; cysteine; glutathione peroxidase; iodide peroxidase; mammals; opal; peptides; selenium; selenocysteine; selenoproteins; stop codon; sulfur; synthesis; thioredoxins
Abstract:
... Selenocysteine (Sec), the 21ˢᵗ proteinogenic amino acid, is inserted co-translationally into number of natural proteins. It is coded by a dual function stop codon UGA (opal). It is a redox active amino acid found at the active sites of several enzymes that are involved in oxidation–reduction reactions. These enzymes include the three major mammalian selenoproteins glutathione peroxidase (GPx), thi ...
DOI:
10.1039/c8ra09880h

19. Effect of oxygen vacancy concentration on indium tungsten oxide UV-A photodetector

Author:
Chen, Kuan-Yin; Chang, Sheng-Po; Lin, Chih-hung
Source:
RSC advances 2018 v.9 no.1 pp. 87-90
ISSN:
2046-2069
Subject:
radio waves; indium; tungsten oxide; ultraviolet radiation; oxygen
Abstract:
... An indium tungsten oxide (IWO) ultraviolet (UV) photodetector was fabricated with radio frequency magnetron sputtering. IWO thin films were deposited on devices under various oxygen partial pressure ambiences. With higher oxygen flow ratio, the oxygen vacancies were filled up, reducing the carrier concentration. Lowering the number of defects, such as oxygen vacancies, was effective for optimizing ...
DOI:
10.1039/c8ra08803a

20. Facile approach for a robust graphene/silver nanowires aerogel with high-performance electromagnetic interference shielding

Author:
Liu, Xiaoting; Chen, Tianrui; Liang, Hao; Qin, Faxiang; Yang, Hui; Guo, Xingzhong
Source:
RSC advances 2018 v.9 no.1 pp. 27-33
ISSN:
2046-2069
Subject:
aerogels; ambient pressure; deformation; drying; electrical properties; electromagnetic interference; electron transfer; graphene; graphene oxide; mixing; nanocomposites; nanosilver; nanowires; silver; strength (mechanics)
Abstract:
... Robust graphene/silver nanowires (AgNWs) hybrid aerogels were fabricated by facile processes including mixing directly, reducing, and ambient pressure drying. The mechanical properties and electromagnetic interference (EMI)-shielding performance of the resultant hybrid aerogels were investigated in detail. Because silver nanowires with a high aspect ratio have been acting as crosslinkers to bridge ...
DOI:
10.1039/c8ra08738e