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1. Stretchable gold fiber-based wearable textile electrochemical biosensor for lactate monitoring in sweat

Author:
Wang, Ren; Zhai, Qingfeng; An, Tiance; Gong, Shu; Cheng, Wenlong
Source:
Talanta 2021 v.222 pp. 121484
ISSN:
0039-9140
Subject:
gold,   etc   ; biocompatibility; biomarkers; biosensors; electrochemistry; electrodes; fabrics; hardness; lactic acid; monitoring; sweat; tensile strength;     Show all 12 Subjects
Abstract:
... Past several years have witnessed growing interest in developing wearable biosensors for non-invasive monitoring vital signs of chemical/biological markers such as lactate. In this context, textiles can be seen as a promising platform for the integration of wearable chemical sensors due to their inherent breathability, flexibility, softness and comfortableness. Gold is regarded as a preferred acti ...
DOI:
10.1016/j.talanta.2020.121484

2. HER2 breast cancer biomarker detection using a sandwich optical fiber assay

Author:
Loyez, Médéric; Lobry, Maxime; Hassan, Eman M.; DeRosa, Maria C.; Caucheteur, Christophe; Wattiez, Ruddy
Source:
Talanta 2021 v.221 pp. 121452
ISSN:
0039-9140
Subject:
gold,   etc   ; antibodies; biomarkers; breast neoplasms; data collection; oligonucleotides; optical fibers; refractive index; surface plasmon resonance; wavelengths;     Show all 10 Subjects
Abstract:
... Optical fiber-based surface plasmon resonance (OF-SPR) sensors have demonstrated high versatility and performances over the last years, which propelled the technique to the heart of numerous and original biosensing concepts. In this work, we contribute to this effort and present our recent findings about the detection of breast cancer HER2 biomarkers through OF-SPR optrodes. 1 cm-long sections of ...
DOI:
10.1016/j.talanta.2020.121452

3. P-type doping in internally photoemitted hot carrier solar cells

Author:
Liao, Li Ping; Yao, Yan Qing; Wang, Gang; Xu, Cun Yun; Liu, De Bei; Zhou, Guang Dong; Zhong, Yuan Xin; Song, Qun Liang
Source:
Journal of cleaner production 2021 v.278 pp. 124168
ISSN:
0959-6526
Subject:
gold,   etc   ; cooling; electric current; electrons; energy; iodides; lighting; solar cells; titanium dioxide;     Show all 9 Subjects
Abstract:
... Hot carriers in hybrid perovskite have been proven to have eminent properties with long carrier cooling time and long carrier migration distance. The invention of the internally photoemitted hot carrier (IPHC) solar cell recently makes it possible to utilize the hot electrons in CH₃NH₃PbI₃ perovskite and capture their excess energies under steady state illumination. How to further improve the effi ...
DOI:
10.1016/j.jclepro.2020.124168

4. Electrochemical genosensor for the detection of Alexandrium minutum dinoflagellates

Author:
Morais, Stephanie L.; Barros, Piedade; Santos, Marlene; Delerue-Matos, Cristina; Gomes, Andreia C.; Fátima Barroso, M.
Source:
Talanta 2021 v.222 pp. 121416
ISSN:
0039-9140
Subject:
gold,   etc   ; Alexandrium minutum; DNA; DNA probes; databases; electrochemistry; electrodes; fluorescein; genes; nucleic acid hybridization; toxicity; Atlantic Ocean;     Show all 12 Subjects
Abstract:
... This work addresses the development of a disposable electrochemical genosensor for the detection of the toxic dinoflagellate, Alexandrium minutum. Analyzing public databases, a specific 70 bp DNA probe, targeting A. minutum, was selected and designed. The genosensor methodology implied the immobilization of a A. minutum-specific DNA-capture probe onto screen-printed gold electrodes (SPGE). To impr ...
DOI:
10.1016/j.talanta.2020.121416

5. Sensing platform for pico-molar level detection of ethyl parathion using Au–Ag nanoclusters based enzymatic strategy

Author:
Sharma, Deepika; Wangoo, Nishima; Sharma, Rohit K.
Source:
Talanta 2021 v.221 pp. 121267
ISSN:
0039-9140
Subject:
gold,   etc   ; acetylcholinesterase; biosensors; catalytic activity; copper; cost effectiveness; detection limit; enzymatic reactions; fluorescence; fluorometry; ions; nanoparticles; nanosilver; parathion; silver;     Show all 15 Subjects
Abstract:
... This work demonstrates a simple, cost effective and ultrasensitive detection of ethyl parathion, an organophosphorus (OPs) pesticide, using enzyme based fluorometric sensing strategy by employing bimetallic BSA@AuAg nanoclusters (NC). The sensing assay is based on the “quenched off” state of bimetallic NC with the addition of Cu²⁺ ions that can be “switched on” due to generation of thiocholine (TC ...
DOI:
10.1016/j.talanta.2020.121267

6. Keto–enol tautomerization drives the self-assembly of leucoquinizarin on Au(111)

Author:
Costantini, Roberto; Colazzo, Luciano; Batini, Laura; Stredansky, Matus; Mohammed, Mohammed S. G.; Achilli, Simona; Floreano, Luca; Fratesi, Guido; de Oteyza, Dimas G.; Cossaro, Albano
Source:
Chemical communications 2020 v.56 no.19 pp. 2833-2836
ISSN:
1364-548X
Subject:
gold,   etc   ; employment; tautomerization; tautomers;     Show all 4 Subjects
Abstract:
... The self-assembly of leucoquinizarin molecules on Au(111) surfaces is shown to be characterized by the molecules mostly being in their keto–enolic tautomeric form, with evidence of their temporary switching to other tautomeric forms. This reveals a metastable chemistry of the assembled molecules, to be considered for their possible employment in the formation of more complex hetero-organic interfa ...
DOI:
10.1039/c9cc09915h

7. Evaluation of a cleaner production for cyanide tailings by chlorination thermal treatments

Author:
Li, Haoyu; Li, Shiwei; Ma, Pengcheng; Zhou, Zhufen; Long, Hailin; Peng, Jinhui; Zhang, Libo
Source:
Journal of cleaner production 2021 v.281 pp. 124195
ISSN:
0959-6526
Subject:
gold,   etc   ; calcium chloride; chlorination; chlorine; cyanides; heat treatment; hydrochloric acid; manufacturing; mass spectrometry; mine tailings; pollution; pollution control; raw materials; risk; roasting; slags; sulfur; temperature; thermodynamics; thermogravimetry; toxicity;     Show all 21 Subjects
Abstract:
... This paper describes cleaner chlorination thermal treatment for the recovery of gold from waste materials generated in gold manufacturing. Chlorination thermal treatment was conducted, and thermogravimetric-mass spectrometry (TG-MS) analyses were performed on the cyanide tailings (CTs). The results, along with thermodynamic calculations performed using FactSage, showed that Cl₂ was the main compou ...
DOI:
10.1016/j.jclepro.2020.124195

8. Enzyme-free electrochemical biosensor based on amplification of proximity-dependent surface hybridization chain reaction for ultrasensitive mRNA detection

Author:
Cheng, Yu-Hong; Liu, Si-Jia; Jiang, Jian-Hui
Source:
Talanta 2021 v.222 pp. 121536
ISSN:
0039-9140
Subject:
gold,   etc   ; DNA; biosensors; detection limit; diagnostic techniques; electrochemistry; electrodes; enzymes; hybridization chain reaction; messenger RNA; neoplasms; nucleotides; pro-apoptotic proteins; washing;     Show all 14 Subjects
Abstract:
... The ability to recognize mRNA with high efficiency in cells would greatly facilitate the elucidation of mRNA-mediated cellular cascades and their disease associations. However, most traditional electrochemical strategies targeting nucleotides are always confronted with cumbersome interface operation and washing procedures, as well as the high cost of labeling and the strict reaction conditions of ...
DOI:
10.1016/j.talanta.2020.121536

9. Gold nanobipyramids integrated ultrasensitive optical and electrochemical biosensor for Aflatoxin B1 detection

Author:
Bhardwaj, Hema; Sumana, Gajjala; Marquette, Christophe A.
Source:
Talanta 2021 v.222 pp. 121578
ISSN:
0039-9140
Subject:
gold,   etc   ; aflatoxin B1; antibodies; biosensors; corn; detection limit; electrochemistry; electrodes; glass; indium tin oxide; lipoic acid; microscopy; nanogold; spectroscopy; standard deviation; surface plasmon resonance; surfactants;     Show all 17 Subjects
Abstract:
... This work reports the development of an electrical and optical biosensing for label-free detection of Aflatoxin B₁ (AFB₁) using gold (Au) nanobipyramids (NBPs). AuNBPs were synthesized through a two-step seed-mediated growth process followed by an exchange of capping agent from surfactant to lipoic acid. Pure and monodispersed AuNBPs of 70 nm base length were obtained and deposited on indium tin o ...
DOI:
10.1016/j.talanta.2020.121578

10. Multifunctional Fe3O4@Au supraparticle as a promising thermal contrast for an ultrasensitive lateral flow immunoassay

Author:
Zhang, Ting; Lei, Lingli; Tian, Meiling; Ren, Junjie; Lu, Zhisong; Liu, Yang; Liu, Yingshuai
Source:
Talanta 2021 v.222 pp. 121478
ISSN:
0039-9140
Subject:
gold,   etc   ; antibodies; cameras; corn; detection limit; immunoassays; infrared radiation; iron oxides; irradiation; magnetic properties; models; nanogold; ochratoxin A; peanuts; quantitative analysis; soybeans;     Show all 16 Subjects
Abstract:
... An ultrasensitive lateral flow immunoassay (LFIA) strip has been developed based on a multifunctional photothermal contrast Fe₃O₄@Au supraparticle (Fe₃O₄@Au SP) for quantitative Ochratoxin A (OTA) detection. The Fe₃O₄@Au SP composite not only shows a better photothermal effect over Fe₃O₄ and gold nanoparticles, but possesses magnetic property and excellent ability to directly adsorb protein (antib ...
DOI:
10.1016/j.talanta.2020.121478

11. Pressure leaching of selenium and tellurium from scrap copper anode slimes in sulfuric acid-oxygen media

Author:
Rao, Shuai; Liu, Yi; Wang, Dongxing; Cao, Hongyang; Zhu, Wei; Yang, Rui; Duan, Lijuan; Liu, Zhiqiang
Source:
Journal of cleaner production 2021 v.278 pp. 123989
ISSN:
0959-6526
Subject:
gold,   etc   ; anodes; copper; energy-dispersive X-ray analysis; leaching; oxidation; oxygen; oxygen partial pressure; pH; scanning electron microscopy; selenides; selenium; silver; sulfuric acid; tellurium; temperature; thermodynamics;     Show all 17 Subjects
Abstract:
... Copper anode slimes are essential secondary resources from which valuable metals, such as Cu, Se, Te, Au, and Ag, may be recovered. Herein, oxidation pressure leaching is proposed for the pretreatment of copper anode slimes to realize efficient extraction of Cu, Se, and Te and enrichment of Au and Ag in the leaching residue. Detailed investigations were conducted to determine the effects of sulfur ...
DOI:
10.1016/j.jclepro.2020.123989

12. Tunable hierarchical wrinkling surface via microscale patterned vertical deformation

Author:
Su, Yingchun; Zhang, Enshuang; Wang, Yitong; Li, Qiang; Chen, Menglin; Dong, Mingdong
Source:
Colloids and surfaces 2020 v.607 pp. 125468
ISSN:
0927-7757
Subject:
gold,   etc   ; deformation; heat; nanogold; polymers;     Show all 5 Subjects
Abstract:
... Controllable nanowrinkles based on shape memory polymer (SMP) sheets have been achieved through metal deposition and subsequent heating recovery process, however, these processes cannot work without the help of macro deformation along the plane of SMP substrate. Herein, we report a simple, novel, yet more exceptional control strategy for the construction of tunable nanowrinkles based on the vertic ...
DOI:
10.1016/j.colsurfa.2020.125468

13. On-surface synthesis of super-heptazethrene

Author:
Mishra, Shantanu; Melidonie, Jason; Eimre, Kristjan; Obermann, Sebastian; Gröning, Oliver; Pignedoli, Carlo A.; Ruffieux, Pascal; Feng, Xinliang; Fasel, Roman
Source:
Chemical communications 2020 v.56 no.54 pp. 7467-7470
ISSN:
1364-548X
Subject:
gold,   etc   ; chemical reactions; models; spectroscopy;     Show all 4 Subjects
Abstract:
... Zethrenes are model diradicaloids with potential applications in spintronics and optoelectronics. Despite a rich chemistry in solution, on-surface synthesis of zethrenes has never been demonstrated. We report the on-surface synthesis of super-heptazethrene on Au(111). Scanning tunneling spectroscopy investigations reveal that super-heptazethrene exhibits an exceedingly low HOMO–LUMO gap of 230 meV ...
DOI:
10.1039/d0cc02513e

14. Thermally Induced Chiral Aggregation of Dihydrobenzopyrenone on Au(111)

Author:
Wang, Dingguan; Yang, Ming; Arramel,; Wu, Jishan; Wee, Andrew T. S.
Source:
ACS applied materials & interfaces 2020 v.12 no.31 pp. 35547-35554
ISSN:
1944-8252
Subject:
gold,   etc   ; annealing; scanning tunneling microscopy;     Show all 3 Subjects
Abstract:
... The realization of chiral supramolecular architectures on solid surfaces has triggered much interest due to its potential enantiospecific applications. An in-depth study of chiral aggregation on surfaces is significant for developing functional chiral surfaces. Herein, we report thermally induced chiral aggregation of dihydrobenzopyrenone on Au(111). By high-resolution low-temperature scanning tun ...
DOI:
10.1021/acsami.0c05856

15. Correction: Mechanistic investigations into synergistically enhanced radiative-charge-transfer in Au–Ag bimetallic nanoclusters

Author:
Liu, Jianbo; Zhao, Rusong; Wang, Xia; Gao, Xuwen; Zou, Guizheng
Source:
Chemical communications 2020 v.56 no.48 pp. 6594
ISSN:
1364-548X
Subject:
gold,   etc   ; chemical reactions; nanoparticles; silver;     Show all 4 Subjects
Abstract:
... Correction for 'Mechanistic investigations into synergistically enhanced radiative-charge-transfer in Au–Ag bimetallic nanoclusters' by Jianbo Liu et al., Chem. Commun., 2020, 56, 5665–5668, DOI: 10.1039/D0CC02047H. ...
DOI:
10.1039/d0cc90244f

16. Pd-Promoted cross coupling of iodobenzene with vinylgold via an unprecedented phenyl transmetalation from Pd to Au

Author:
Wang, Jiwei; Zhan, Licheng; Wang, Gendi; Wei, Yin; Shi, Min; Zhang, Jun
Source:
Chemical communications 2020 v.56 no.46 pp. 6213-6216
ISSN:
1364-548X
Subject:
gold,   etc   ; chemical reactions; iodobenzenes; palladium;     Show all 4 Subjects
Abstract:
... A novel Pd/Au vinylene complex synthesized through cyclization of σ,π-heterodinuclear (Pd/Au) acetylide reacted with iodobenzene to give a Pd vinyl species, where the presence of a strong metallophilic Pd⋯Au interaction was found to facilitate phenyl transmetalation from Pd to Au, followed by reductive elimination at Au. ...
DOI:
10.1039/d0cc02645j

17. Microscale superlubricity at multiple gold–graphite heterointerfaces under ambient conditions

Author:
Li, Jinjin; Li, Jianfeng; Chen, Xinchun; Liu, Yuhong; Luo, Jianbin
Source:
Carbon 2020 v.161 pp. 827-833
ISSN:
0008-6223
Subject:
gold,   etc   ; friction; lubrication; models; nanogold;     Show all 5 Subjects
Abstract:
... Superlubricity at gold–graphite heterointerfaces can be easily achieved at the nanoscale because the different lattice parameters make them the promising friction pairs to form the incommensurate contact. However, the superlubricity under a high contact pressure at micro- or macro-scales, which has great implications in mechanical lubrication, remains unclear. In this study, a gold nanocrystal-coa ...
DOI:
10.1016/j.carbon.2020.01.070

18. Determination of Platinum Group Elements in Geological Samples by Inductively Coupled Plasma Mass Spectrometry: Possibilities and Limitations

Author:
Grebneva-Balyuk, O. N.; Kubrakova, I. V.
Source:
Journal of analytical chemistry 2020 v.75 no.3 pp. 275-285
ISSN:
1061-9348
Subject:
gold,   etc   ; atomic absorption spectrometry; platinum;     Show all 3 Subjects
Abstract:
... Published data on approaches used to suppress/eliminate interferences of various origins in determining platinum group elements and gold in geological samples by inductively coupled plasma mass spectrometry are generalized and analyzed. ...
DOI:
10.1134/S1061934820030065

19. Synthesis of water-dispersible, plate-like perovskites and their core–shell nanocrystals

Author:
Minakawa, Muneharu; Imura, Yoshiro; Kawai, Takeshi
Source:
RSC advances 2020 v.10 no.10 pp. 5972-5977
ISSN:
2046-2069
Subject:
gold,   etc   ; amines; mixing; nanocrystals; solvents;     Show all 5 Subjects
Abstract:
... Shape-controlled halide perovskite nanocrystals are attractive as an emerging functional material; however, these nanocrystals are prepared using organic solvents containing alkylamines and there are few reports on the synthesis of water-dispersible halide perovskite nanocrystals. We report a simple method to prepare water-dispersible, plate-like perovskite nanocrystals by mixing a long-chain amid ...
DOI:
10.1039/d0ra00657b

20. Contamination of groundwater by potential harmful elements from gold mine tailings and the implications to human health: A case study in Welkom and Virginia, Free State Province, South Africa

Author:
Belle, Gladys; Fossey, Annabel; Esterhuizen, Leana; Moodley, Roshila
Source:
Groundwater for sustainable development 2021 v.12 pp. 100507
ISSN:
2352-801X
Subject:
gold,   etc   ; Escherichia coli; case studies; coliform bacteria; drinking water; groundwater; groundwater contamination; human health; iron; lead; mine tailings; mining; people; plate count; sustainable development; toxicity; water quality; South Africa;     Show all 18 Subjects
Abstract:
... Mining of gold in the Welkom and Virginia areas of the Free State Province in South Africa has produced numerous gold mine tailings, which contain a variety of contaminants. The extent of contamination of groundwater in the area was studied by measuring several water quality indicators at eight sampling sites, and within three zones. The overall contamination of groundwater was quantified by compu ...
DOI:
10.1016/j.gsd.2020.100507