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1. Electrodes as Polarizing Functional Groups: Correlation between Hammett Parameters and Electrochemical Polarization

Author:
Sarkar, Sohini; Patrow, Joel G.; Voegtle, Matthew J.; Pennathur, Anuj K.; Dawlaty, Jahan M.
Source:
Journal of physical chemistry 2019 v.123 no.8 pp. 4926-4937
ISSN:
1932-7455
Subject:
silver; silver chloride,   etc   ; electric field; electrochemistry; electrodes; gold; moieties;     Show all 7 Subjects
Abstract:
... Bridging the concepts of homogeneous and heterogeneous reactions is an important challenge in modern chemistry. Toward that end, here, we connect the homogeneous chemistry concept of the Hammett parameter, used by organic and organometallic chemists to quantify the electron-withdrawing capability of a functional group, to the electrochemical concept of polarization induced by a biased electrode. B ...
DOI:
10.1021/acs.jpcc.8b12058

2. Direct measurement of “ready-made” cations in a Ge2Sb3.4Te6.2 film

Author:
Imanishi, Yusuke; Nakaoka, Toshihiro
Source:
Journal of materials science 2019 v.54 no.9 pp. 7072-7077
ISSN:
0022-2461
Subject:
silver,   etc   ; cations; electric potential; electrodes;     Show all 4 Subjects
Abstract:
... We have successfully observed Faradaic current in cyclic voltammetry of an amorphous Ge₂Sb₃.₄Te₆.₂ film with Ag electrodes. The Faradaic current peak was attributed to a non-reversible redox process limited by diffusion of Ag cations. The Ag cations can be generated by anodic dissolution under applied bias voltage or may exist before the voltage application as “ready-made” ions. The cyclic voltamm ...
DOI:
10.1007/s10853-019-03405-y

3. Doping as a Strategy to Tune Color of 2D Colloidal Nanoplatelets

Author:
Dufour, Marion; Izquierdo, Eva; Livache, Clément; Martinez, Bertille; Silly, Mathieu G.; Pons, Thomas; Lhuillier, Emmanuel; Delerue, Christophe; Ithurria, Sandrine
Source:
ACS applied materials & interfaces 2019 v.11 no.10 pp. 10128-10134
ISSN:
1944-8252
Subject:
silver,   etc   ; color; nanocrystals; photoluminescence; spectroscopy;     Show all 5 Subjects
Abstract:
... Among colloidal nanocrystals, 2D nanoplatelets (NPLs) made of II-VI compounds appear as a special class of emitters with an especially narrow photoluminescence signal. However, the PL signal in the case of NPLs is only tunable by a discrete step. Here, we demonstrate that doping is a viable path to finely tune the color of these NPLs from green to red, making them extremely interesting as phosphor ...
DOI:
10.1021/acsami.8b18650

4. Enhancing Energetic Performance of Multinuclear Ag(I)-Cluster MOF-Based High-Energy-Density Materials by Thermal Dehydration

Author:
Ma, Xiaohui; Cai, Chao; Sun, Wujuan; Song, Weiming; Ma, Yulong; Liu, Xiangyu; Xie, Gang; Chen, Sanping; Gao, Shengli
Source:
ACS applied materials & interfaces 2019 v.11 no.9 pp. 9233-9238
ISSN:
1944-8252
Subject:
silver,   etc   ; coordination polymers; energy; ligands;     Show all 4 Subjects
Abstract:
... It is an enormous challenge to construct high-energy-density materials meeting simultaneously requirements of high energy and excellent stability. In this work, the reaction of a Ag(I) ion with a nitrogen-rich ligand, 1H-tetrazole-5-acetic acid (H₂tza), leads to a novel Ag7-cluster metal–organic framework, [Ag₇(tza)₃(Htza)₂(H₂tza)(H₂O)] (1), with remarkable high-energy content, stability, and inse ...
DOI:
10.1021/acsami.9b00834

5. Carbon nanospheres induced high negative permittivity in nanosilver-polydopamine metacomposites

Author:
Gu, Hongbo; Xu, Xiaojiang; Dong, Mengyao; Xie, Peitao; Shao, Qian; Fan, Runhua; Liu, Chuntai; Wu, Shide; Wei, Renbo; Guo, Zhanhu
Source:
Carbon 2019 v.147 pp. 550-558
ISSN:
0008-6223
Subject:
silver,   etc   ; anisotropy; carbon; electrical conductivity; nanosilver; nanospheres;     Show all 6 Subjects
Abstract:
... In this work, a unique high negative permittivity is observed in the carbon nanosphere (CNS) supported nanosilver-polydopamine (PDA) metacomposites (called CNS-PDA/Ag). The CNS possesses a uniform spherical structure (average diameter of about 200 nm) with a bridge to link CNS together. The Ag nanoparticles are observed to be uniformly deposited on the surface of CNS-PDA core-shell structures with ...
DOI:
10.1016/j.carbon.2019.03.028

6. Ag(I)-Catalyzed Tandem Reaction of Conjugated Ene-yne-ketones in the Presence of PhI(OAc)₂ and Triethylamine: Synthesis of 2-Alkenylfurans

Author:
Mao, Shanjian; Tang, Ling; Wu, Chenggui; Tu, Xianxia; Gao, Qianwen; Deng, Guisheng
Source:
Organic letters 2019 v.21 no.7 pp. 2416-2420
ISSN:
1523-7052
Subject:
silver,   etc   ; carbenes; chemical reactions; chemical structure; triethylamine;     Show all 5 Subjects
Abstract:
... Silver-catalyzed tandem cyclization–elimination reactions of conjugated ene-yne-ketones in PhI(OAc)₂/triethylamine system lead to the formation of 2-alkenylfurans. 2-Furylsilver carbene and phenyliodonium ylide are proposed as the key intermediates in these transformations. ...
DOI:
10.1021/acs.orglett.9b00712

7. Silicene Passivation by Few-Layer Graphene

Author:
Ritter, Viktoria; Genser, Jakob; Nazzari, Daniele; Bethge, Ole; Bertagnolli, Emmerich; Lugstein, Alois
Source:
ACS applied materials & interfaces 2019 v.11 no.13 pp. 12745-12751
ISSN:
1944-8252
Subject:
silver,   etc   ; Raman spectroscopy; encapsulation; graphene; materials science;     Show all 5 Subjects
Abstract:
... The stabilization of silicene at ambient conditions is essential for its characterization, future processing, and device integration. Here, we demonstrate in situ encapsulation of silicene on Ag(111) by exfoliated few-layer graphene (FLG) flakes, allowing subsequent Raman analysis under ambient conditions. Raman spectroscopy measurements proved that FLG capping serves as an effective passivation, ...
DOI:
10.1021/acsami.8b20751

8. C–H ¹⁸F-fluorination of 8-methylquinolines with Ag[¹⁸F]F

Author:
Lee, So Jeong; Brooks, Allen F.; Ichiishi, Naoko; Makaravage, Katarina J.; Mossine, Andrew V.; Sanford, Melanie S.; Scott, Peter J. H.
Source:
Chemical communications 2019 v.55 no.20 pp. 2976-2979
ISSN:
1364-548X
Subject:
silver,   etc   ; chemical reactions; fluorine; organofluorine compounds; quinolines;     Show all 5 Subjects
Abstract:
... This report describes a Pd-mediated C–H radiofluorination of 8-methylquinoline derivatives with no-carrier-added Ag[¹⁸F]F. To achieve this transformation, a new method was developed for the generation of Ag[¹⁸F]F using a sep-pak cartridge. The C–H radiofluorination was then optimized and applied to a series of substituted 8-methylquinoline derivatives. Finally, this method was fully automated usin ...
DOI:
10.1039/c9cc00641a

9. Liposome-Mediated in Situ Formation of AgI/Ag/BiOI Z-Scheme Heterojunction on Foamed Nickel Electrode: A Proof-of-Concept Study for Cathodic Liposomal Photoelectrochemical Bioanalysis

Author:
Yu, Si-Yuan; Mei, Li-Ping; Xu, Yi-Tong; Xue, Tie-Ying; Fan, Gao-Chao; Han, De-Man; Chen, Guangxu; Zhao, Wei-Wei
Source:
Analytical chemistry 2019 v.91 no.6 pp. 3800-3804
ISSN:
1520-6882
Subject:
silver,   etc   ; bismuth; electrodes; iodides; ions; nanosilver; nickel;     Show all 7 Subjects
Abstract:
... This work reports the liposome-mediated in situ formation of the AgI/Ag/BiOI Z-scheme heterojunction on foamed nickel electrode for signal-on cathodic photoelectrochemical (PEC) bioanalysis. Specifically, in a proof-of-concept study, Ag nanoparticle-encapsulated liposomes were initially confined via the sandwich immunobinding and then processed to release numerous Ag⁺ ions, which were then directe ...
DOI:
10.1021/acs.analchem.9b00352

10. Silver-catalyzed decarboxylative radical cascade cyclization toward benzimidazo[2,1-a]isoquinolin-6(5H)-ones

Author:
SunKai Sun and Shi-Jun Li contributed equally., Kai; Li, Shi-Jun; Chen, Xiao-Lan; Liu, Yan; Huang, Xian-Qiang; Wei, Dong-Hui; Qu, Ling-Bo; Zhao, Yu-Fen; Yu, Bing
Source:
Chemical communications 2019 v.55 no.19 pp. 2861-2864
ISSN:
1364-548X
Subject:
silver,   etc   ; carboxylic acids; catalysts; cyclization reactions; quinolines;     Show all 5 Subjects
Abstract:
... A simple and efficient decarboxylative radical addition/cyclization strategy was developed, by which a wide range of benzimidazo[2,1-a]isoquinoline-6(5H)-ones were prepared in one-pot via reaction of functionalized 2-arylbenzoimidazoles and carboxylic acids in the presence of K₂S₂O₈/AgNO₃ under mild reaction conditions. ...
DOI:
10.1039/c8cc10243k

11. A Strategy To Obtain o-Naphthoquinone Methides: Ag(I)-Catalyzed Cyclization of Enynones for the Synthesis of Benzo[h]chromanes and Naphthopyryliums

Author:
Wu, Feng; Zhu, Shifa
Source:
Organic letters 2019 v.21 no.5 pp. 1488-1492
ISSN:
1523-7052
Subject:
silver,   etc   ; chemical reactions; chemical structure; quinones;     Show all 4 Subjects
Abstract:
... A new strategy to obtain o-NQM intermediates through a ring-formation strategy by Ag(I)-catalyzed cyclization of 2-alkenylphenyl alkynyl ketones and its [4 + 2] annulations with styrenes has been developed. This reaction features high efficiency, mild reaction conditions, as well as flexible substitutions and atom economy. The obtained benzo[h]chromane products were further oxidized to naphthopyry ...
DOI:
10.1021/acs.orglett.9b00281

12. Synthesis of 4-(1H-isochromen-1-yl)isoquinolines through the silver-catalysed homodimerization of ortho-alkynylarylaldehydes and subsequent condensation of the 1,5-dicarbonyl motif with NH₃

Author:
Guo, Minghui; Meng, Xin; Zhao, Yang; Dong, Yuexia; Sun, Xuejun; Tian, Laijin; Cao, Ziping
Source:
RSC advances 2019 v.9 no.5 pp. 2703-2707
ISSN:
2046-2069
Subject:
silver,   etc   ; aldehydes; ammonia; carbonyl compounds; catalysts; isoquinolines;     Show all 6 Subjects
Abstract:
... 4-(1H-Isochromen-1-yl)isoquinoline derivatives were synthesized in high yields via the AgBF₄-catalyzed self-reaction of ortho-alkynylarylaldehydes to give isochromene intermediates, followed by the dehydration of the 1,5-dicarbonyl motif with NH₃. Compared with electron-rich aromatic substituents, this strategy can provide the desired isochromene products with an electron-deficient isoquinoline un ...
DOI:
10.1039/c8ra09269a

13. Epitaxial Growth of Optically Thick, Single Crystalline Silver Films for Plasmonics

Author:
Cheng, Fei; Lee, Chien-Ju; Choi, Junho; Wang, Chun-Yuan; Zhang, Qiang; Zhang, Hui; Gwo, Shangjr; Chang, Wen-Hao; Li, Xiaoqin; Shih, Chih-Kang
Source:
ACS applied materials & interfaces 2019 v.11 no.3 pp. 3189-3195
ISSN:
1944-8252
Subject:
silver,   etc   ; aluminum oxide; annealing; nanosilver; temperature;     Show all 5 Subjects
Abstract:
... Single crystalline Ag films on dielectric substrates have received tremendous attention recently due to their technological potentials as low loss plasmonic materials. Two different growth approaches have been used to produce single crystalline Ag films previously. One approach is based on repetitive cycles of a two-step process (low temperature deposition followed by RT annealing) using molecular ...
DOI:
10.1021/acsami.8b16667

14. Dual defect system of tellurium antisites and silver interstitials in off-stoichiometric Bi₂(Te,Se)₃₊y causing enhanced thermoelectric performance

Author:
Kim, Cham; Lopez, David Humberto; Kim, Dong Hwan; Kim, Hoyoung
Source:
Journal of materials chemistry A 2019 v.7 no.2 pp. 791-800
ISSN:
2050-7496
Subject:
silver,   etc   ; glass; melting; nanosilver; tellurium; temperature;     Show all 6 Subjects
Abstract:
... Enhancement in the thermoelectric performance of n-type Bi₂(Te,Se)₃ was accomplished by forming a dual defect system composed of Te- and Ag-related defects. Te-rich Bi₂(Te,Se)₃₊y, which has antisite defects generated by an excess of Te, was prepared via a conventional melting process. We devised a one-pot process in which Ag nanoparticles were deposited onto the Te-rich Bi₂(Te,Se)₃₊y as soon as th ...
DOI:
10.1039/c8ta05261a

15. Recent progress in the synthesis of silver nanowires and their role as conducting materials

Author:
Fahad, Shah; Yu, Haojie; Wang, Li; Zain-ul-Abdin,; Haroon, Muhammad; Ullah, Raja Summe; Nazir, Ahsan; Naveed, Kaleem-ur-Rahman; Elshaarani, Tarig; Khan, Amin
Source:
Journal of materials science 2019 v.54 no.2 pp. 997-1035
ISSN:
0022-2461
Subject:
silver,   etc   ; inorganic salts; nanosilver; nanowires; polyols;     Show all 5 Subjects
Abstract:
... Synthesis of silver nanowires got much attention of researchers due to their promising applications in various fields of nanoelectronic devices. Many research articles focusing on silver nanowires synthesis have been reported since past decade. A number of techniques have been applied for successful synthesis of silver nanowires. Solution-based polyol process was proved as a dominant approach to t ...
DOI:
10.1007/s10853-018-2994-9

16. Single metal deposition versus physical developer: A comparison between two advanced fingermark detection techniques

Author:
Moret, Sébastien; Lee, Po Lun Timothy; de la Hunty, Mackenzie; Spindler, Xanthe; Lennard, Chris; Roux, Claude
Source:
Forensic science international 2019 v.294 pp. 103-112
ISSN:
0379-0738
Subject:
silver,   etc   ; amino acids; gold; staining; zinc;     Show all 5 Subjects
Abstract:
... Single metal deposition (SMD II) is a fingermark detection technique based on the use of colloidal gold. The technique has been simplified and optimised over the years to become more reliable, sensitive and user-friendly. Physical developer (PD) is a well-established detection method based on silver deposition from a redox solution. This study presents an extensive comparison of SMD II against PD ...
DOI:
10.1016/j.forsciint.2018.10.032

17. Vapor pressure measurements of AgBr by the Knudsen effusion method

Author:
Nagata, Tetsuya; Iizuka, Atsushi; Shibata, Etsuro
Source:
Thermochimica acta 2019 v.671 pp. 32-35
ISSN:
0040-6031
Subject:
silver,   etc   ; equations; liquids; temperature; vapor pressure; vapors;     Show all 6 Subjects
Abstract:
... The vapor pressure of silver bromide (AgBr) liquid was measured by the Knudsen effusion method. The ratio of the vapor species of silver bromide was calculated from the literature Hildenbrand and Lau, Pankratz [3,6], and the vapor pressures were calculated on the basis of the ratio. As reported in the literature Hildenbrand and Lau [3], we considered the vapor species to be monomers (AgBr) and tri ...
DOI:
10.1016/j.tca.2018.10.027

18. An efficient approach to eliminate steryl ethers and miscellaneous esters/ketones for gas chromatographic analysis of alkenones and alkenoates

Author:
Wang, Li; Longo, William M.; Dillon, James T.; Zhao, Jiaju; Zheng, Yinsui; Moros, Matthias; Huang, Yongsong
Source:
Journal of chromatography 2019 v.1596 pp. 175-182
ISSN:
0021-9673
Subject:
silver; silver nitrate,   etc   ; biomarkers; chemical bonding; ethers; gas chromatography; ketones; lakes; sediments; silica gel; wax esters;     Show all 11 Subjects
Abstract:
... Long-chain alkenones (LCAs) and alkenoates (LCEs) are highly valuable biomarkers for paleotemperature reconstructions. A major problem, however, for accurate quantification of these compounds using gas chromatography (GC) is co-elution with steryl ethers, wax esters, saturated ketones and other numerous mid-polarity compounds frequently encountered in marginal marine and lake sediments. Co-elution ...
DOI:
10.1016/j.chroma.2019.02.064

19. Self-stacked multilayer FeOCl supported on a cellulose-derived carbon aerogel: a new and high-performance anode material for supercapacitors

Author:
Wan, Caichao; Jiao, Yue; Bao, Wenhui; Gao, He; Wu, Yiqiang; Li, Jian
Source:
Journal of materials chemistry A 2019 v.7 no.16 pp. 9556-9564
ISSN:
2050-7496
Subject:
silver; silver chloride,   etc   ; active sites; aerogels; anodes; capacitance; carbon; cathodes; energy; ions; manganese dioxide; sodium sulfate;     Show all 12 Subjects
Abstract:
... To build high-energy density asymmetric supercapacitors (ASCs), current studies are always directed towards cathode materials; however, anode materials are paid much less attention. Here we for the first time demonstrate that orthorhombic FeOCl with a self-stacked laminated structure is suitable to be a high-performance anode material for supercapacitors since its unique laminated structure can pr ...
DOI:
10.1039/c8ta12261j

20. Ultrafast microfluidic synthesis of hierarchical triangular silver core-silica shell nanoplatelet toward enhanced cellular internalization

Author:
Hao, Nanjing; Nie, Yuan; Xu, Zhe; Zhang, John X.J.
Source:
Journal of colloid and interface science 2019 v.542 pp. 370-378
ISSN:
0021-9797
Subject:
silver; silver nitrate,   etc   ; ammonia; borohydrides; citrates; engineering; hydrogen peroxide; laminar flow; nanosilver; silica;     Show all 10 Subjects
Abstract:
... Microfluidic reactors represent a new frontier in the rational design and controllable synthesis of functional micro-/nanomaterials. Herein, we develop a continuous and ultrafast flow synthesis method to obtain triangular silver (tAg) nanoplatelet using a short range two-loop spiral-shaped laminar flow microfluidic reactor, with one inlet flow containing AgNO3, trisodium citrate, and H2O2 and the ...
DOI:
10.1016/j.jcis.2019.02.021