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1. An efficient and recyclable nanocatalyst for the green and rapid synthesis of biologically active polysubstituted pyrroles and 1,2,4,5-tetrasubstituted imidazole derivatives

Author:
Thwin, Myo; Mahmoudi, Boshra; Ivaschuk, Olga A.; Yousif, Qahtan A.
Source:
RSC advances 2019 v.9 no.28 pp. 15966-15975
ISSN:
2046-2069
Subject:
nanomaterials,   etc   ; catalysts; imidazoles; pyrroles;     Show all 4 Subjects
Abstract:
... An effective process for the green and rapid synthesis of biologically active polysubstituted pyrroles and 1,2,4,5-tetrasubstituted imidazoles derivatives using Cu@imine/Fe₃O₄ MNPs catalyst under solvent-free conditions is explained. This catalyst showed high reactivity for the synthesis of a set of different derivatives of polysubstituted pyrroles and 1,2,4,5-tetrasubstituted imidazole derivative ...
DOI:
10.1039/c9ra02325a

2. DNA nanotechnology and bioassay development

Author:
Ebrahimi, Ali; Ravan, Hadi; Khajouei, Sima
Source:
Trends in analytical chemistry 2019 v.114 pp. 126-142
ISSN:
0165-9936
Subject:
nanomaterials,   etc   ; DNA; bioassays;     Show all 3 Subjects
Abstract:
... The capability of DNA molecule to self-assemble into a variety of nanostructures have taken this molecule out of its biological role to provide a foundation for the field of DNA nanotechnology. Actually, DNA nanotechnology utilizes DNA self-assembly to manage the spatial and temporal positioning of functional materials, and can be divided into two categories including structural and dynamic DNA na ...
DOI:
10.1016/j.trac.2019.03.007

3. Tunable gap in stable arsenene nanoribbons opens the door to electronic applications

Author:
García-Fuente, A.; Carrete, J.; Vega, A.; Gallego, L. J.
Source:
RSC advances 2019 v.9 no.21 pp. 11818-11823
ISSN:
2046-2069
Subject:
nanomaterials,   etc   ; arsenic; graphene;     Show all 3 Subjects
Abstract:
... Arsenic has been predicted to present significantly more diverse 2D phases than other elemental compounds like graphene. While practical applications must be based on finite arsenene samples, like nanoribbons, theory has so far focused on the infinite sheet. Our ab initio simulations show the clear contrast between the properties of arsenene nanoribbons and those of the monolayer, ranging from pha ...
DOI:
10.1039/c9ra00975b

4. Interface Modulating CNTs@PANi Hybrids by Controlled Unzipping of the Walls of CNTs To Achieve Tunable High-Performance Microwave Absorption

Author:
Wang, Huagao; Meng, Fanbin; Huang, Fei; Jing, Changfei; Li, Ying; Wei, Wei; Zhou, Zuowan
Source:
ACS applied materials & interfaces 2019 v.11 no.12 pp. 12142-12153
ISSN:
1944-8252
Subject:
nanomaterials,   etc   ; graphene; oxidation; peeling;     Show all 4 Subjects
Abstract:
... Making full use of the interface modulation-induced interface polarization is an effective strategy to achieve excellent microwave absorption (MA). In this study, we develop an interfacial modulation strategy for achieving this goal in the commonly reported dielectric carbon nanotubes@polyaniline (CNTs@PANi) hybrid microwave absorber by optimizing the CNT nanocore structure. The heterogeneous inte ...
DOI:
10.1021/acsami.9b01122

5. A Status Report on FDA Approval of Medical Devices Containing Nanostructured Materials

Author:
Jones, A-Andrew D.; Mi, Gujie; Webster, Thomas J.
Source:
Trends in biotechnology 2019 v.37 no.2 pp. 117-120
ISSN:
0167-7799
Subject:
nanomaterials,   etc   ; commercialization; medical equipment;     Show all 3 Subjects
Abstract:
... Commercialization has been slow since the FDA approved a medical device containing nanomaterials in 1980. In 2017, the FDA released draft guidance to accelerate approval. We highlight here that geographical and structural separation of researchers, manufacturers, and clinical servicers may slow commercialization more than FDA approval. ...
DOI:
10.1016/j.tibtech.2018.06.003

6. Nanomaterials for photoacoustic imaging in the second near-infrared window

Author:
Huang, Kai; Zhang, Yifan; Lin, Jing; Huang, Peng
Source:
Biomaterials science 2019 v.7 no.2 pp. 472-479
ISSN:
2047-4849
Subject:
nanomaterials,   etc   ; image analysis; photons;     Show all 3 Subjects
Abstract:
... Photoacoustic imaging (PAI) is a rapidly developing imaging technique for both fundamental research and clinical applications. Recent studies revealed that PAI in the second near-infrared (NIR-II) region exhibits enhanced deep-tissue imaging capability, which benefits from reduced photon scattering, minimized background noise and increased applicable power in comparison to PAI in the first near-in ...
DOI:
10.1039/c8bm00642c

7. Recent advances in oxidation and degradation mechanisms of ultrathin 2D materials under ambient conditions and their passivation strategies

Author:
Li, Qiang; Zhou, Qionghua; Shi, Li; Chen, Qian; Wang, Jinlan
Source:
Journal of materials chemistry A 2019 v.7 no.9 pp. 4291-4312
ISSN:
2050-7496
Subject:
nanomaterials,   etc   ; oxidation; phosphorus; physicochemical properties;     Show all 4 Subjects
Abstract:
... Graphene-like two-dimensional (2D) nanomaterials, such as transition metal dichalcogenides (TMDCs) and black phosphorus (BP), have been extensively studied in the recent years due to their numerous and unusual physical and chemical properties that are introduced when charge and heat transports are confined to a plane. However, many 2D materials with atomic-scale thicknesses suffer from oxidation a ...
DOI:
10.1039/c8ta10306b

8. Harmonic Generation by Metal Nanostructures Optically Coupled to Two-Dimensional Transition-Metal Dichalcogenide

Author:
Drobnyh, Elena; Pachter, Ruth; Sukharev, Maxim
Source:
Journal of physical chemistry 2019 v.123 no.11 pp. 6898-6904
ISSN:
1932-7455
Subject:
nanomaterials,   etc   ; mathematical models; physical chemistry;     Show all 3 Subjects
Abstract:
... Rigorous electrodynamical simulations based on the nonlinear Drude model are performed to investigate the influence of strong coupling on harmonic generation by periodic metal gratings. It is shown that a thin dispersive material with a third-order nonlinearity strongly coupled to surface plasmon-polaritons significantly affects even harmonics generated solely by the metal. The physical nature of ...
DOI:
10.1021/acs.jpcc.9b00257

9. Nanoanalytics: history, concepts, and specificities

Author:
Faucher, Stéphane; Le Coustumer, Philippe; Lespes, Gaëtane
Source:
Environmental science and pollution research international 2019 v.26 no.6 pp. 5267-5281
ISSN:
0944-1344
Subject:
nanomaterials,   etc   ; analytical chemistry; analytical methods;     Show all 3 Subjects
Abstract:
... This article deals with analytical chemistry devoted to nano-objects. A short review presents nano-objects, their singularity in relation to their dimensions, genesis, and possible transformations. The term nano-object is then explained. Nano-object characterization activities are considered and a definition of nanoanalytics is proposed. Parameters and properties for describing nano-objects on an ...
DOI:
10.1007/s11356-018-1646-6

10. Correction: Engineering tin phosphides@carbon yolk–shell nanocube structures as a highly stable anode material for sodium-ion batteries

Author:
Ma, Lianbo; Yan, Pengjie; Wu, Shikui; Zhu, Guoyin; Shen, Yalong
Source:
Journal of materials chemistry A 2019 v.7 no.2 pp. 843
ISSN:
2050-7496
Subject:
nanomaterials,   etc   ; anodes; batteries; chemistry; tin;     Show all 5 Subjects
Abstract:
... Correction for ‘Engineering tin phosphides@carbon yolk–shell nanocube structures as a highly stable anode material for sodium-ion batteries’ by Lianbo Ma et al., J. Mater. Chem. A, 2017, 5, 16994–17000. ...
DOI:
10.1039/c8ta90285b

11. Rectification effects of C3N nanoribbons-based Schottky junctions

Author:
Xia, Congxin; Fang, Lizhen; Xiong, Wenqi; Wang, Tianxing; Wei, Shuyi; Jia, Yu
Source:
Carbon 2019 v.141 pp. 363-369
ISSN:
0008-6223
Subject:
nanomaterials,   etc   ; carbon; electrical properties; semiconductors;     Show all 4 Subjects
Abstract:
... Electronic and transport properties of semiconductor materials are very important to electronic and optoelectronic devices. Here, we present theoretical predication on the band structures and transport properties of zigzag C3N nanoribbons (ZC3NNRs) and related Schottky junctions. The results show that pristine ZC3NNRs are ferromagnetic metal, while the H-passivated ZC3NNRs are either nonmagnetic s ...
DOI:
10.1016/j.carbon.2018.09.066

12. RNA nanostructures and scaffolds for biotechnology applications

Author:
Ohno, Hirohisa; Akamine, Sae; Saito, Hirohide
Source:
Current opinion in biotechnology 2019 v.58 pp. 53-61
ISSN:
0958-1669
Subject:
nanomaterials,   etc   ; RNA; bioengineering; biotechnology; mammals; medicine; proteins;     Show all 7 Subjects
Abstract:
... RNA plays important roles in the regulation of gene expressions and other cellular functions. It functions as both as an informational carrier and a nanomachine due to its complementary base-pairing ability and complexed three-dimensional structure. Several nanostructures have been designed and constructed by exploiting these natural RNA properties. In this review, we will introduce the design pri ...
DOI:
10.1016/j.copbio.2018.11.006

13. Amino acid conformations control the morphological and chiral features of the self-assembled peptide nanostructures: Young investigators perspective

Author:
Zhou, Peng; Wang, Jiqian; Wang, Meng; Hou, Jian; Lu, Jian R.; Xu, Hai
Source:
Journal of colloid and interface science 2019 v.548 pp. 244-254
ISSN:
0021-9797
Subject:
nanomaterials,   etc   ; amino acids; geometry; optical isomerism; peptides;     Show all 5 Subjects
Abstract:
... A variety of nanostructures with different chiral features can be self-assembled from short peptides with highly similar sequences. We hypothesize that these supramolecular nanostructures are ruled by the constituent amino acid residues which adopt their conformations under the influence of intra-/inter-molecular interactions during peptide self-assembly.Through reviewing recent advances in the se ...
DOI:
10.1016/j.jcis.2019.04.019

14. A MOF-mediated strategy for constructing human backbone-like CoMoS₃@N-doped carbon nanostructures with multiple voids as a superior anode for sodium-ion batteries

Author:
Yang, Su Hyun; Park, Seung-Keun; Kim, Jin Koo; Kang, Yun Chan
Source:
Journal of materials chemistry A 2019 v.7 no.22 pp. 13751-13761
ISSN:
2050-7496
Subject:
nanomaterials,   etc   ; anodes; batteries; carbon; coatings; electrochemistry; synergism;     Show all 7 Subjects
Abstract:
... Nanostructured, multicomponent metal sulfides have recently attracted much attention as anode materials for high-performance sodium ion batteries (SIBs). Therefore, a simple strategy for constructing rationally designed multicomponent metal sulfide-based nanostructures is needed. Herein, we propose a metal–organic framework-based (MOF) strategy to construct human backbone-like CoMoS₃ nanostructure ...
DOI:
10.1039/c9ta03873f

15. An extended core nanocoax pillar architecture for enhanced molecular detection

Author:
D’Imperio, L.A.; Valera, A.E.; Naughton, J.R.; Archibald, M.M.; Merlo, J.M.; Connolly, T.J.; Burns, M.J.; Chiles, T.C.; Naughton, M.J.
Source:
Biosensors & bioelectronics 2019 v.134 pp. 83-89
ISSN:
0956-5663
Subject:
nanomaterials,   etc   ; Vibrio cholerae; biosensors; detection limit;     Show all 4 Subjects
Abstract:
... Biosensors that incorporate nanomaterials and nanofabrication techniques enable molecular detection of chemical and biological macromolecules with a high degree of specificity and ultrasensitivity. Here, we present a novel fabrication process that yields a nanostructure capable of detecting biological macromolecules. The extended core nanocoax (ECC) structure builds on a previously reported nanoco ...
DOI:
10.1016/j.bios.2019.03.045

16. Silver-based metal-organic gels as novel coreactant for enhancing electrochemiluminescence and its biosensing potential

Author:
Li, Yang; He, Li; Huang, Cheng Zhi; Li, Yuan Fang
Source:
Biosensors & bioelectronics 2019 v.134 pp. 29-35
ISSN:
0956-5663
Subject:
nanomaterials,   etc   ; DNA; biosensors; electrochemiluminescence; gels; mixing;     Show all 6 Subjects
Abstract:
... Metal-organic gels (MOGs), a kind of soft materials, were reported as a brand new category of novel solid coreactants for enhancing electrochemiluminescence (ECL) of Ru (bpy)32+ and derivatives. In this work, silver-based MOGs (Ag-MOGs) prepared by a one-step mixing and heating approach were demonstrated as novel efficient solid-state coreactants which differ from the previous research on ECL core ...
DOI:
10.1016/j.bios.2019.03.058

17. A kinetic Monte Carlo model for the growth and etching of graphene during chemical vapor deposition

Author:
Chen, Shuai; Gao, Junfeng; Srinivasan, Bharathi M.; Zhang, Gang; Sorkin, Viacheslav; Hariharaputran, Ramanarayan; Zhang, Yong-Wei
Source:
Carbon 2019 v.146 pp. 399-405
ISSN:
0008-6223
Subject:
nanomaterials,   etc   ; Monte Carlo method; graphene; models; vapors;     Show all 5 Subjects
Abstract:
... Controlled growth and etching have been employed experimentally to achieve diverse graphene patterns via chemical vapor deposition (CVD). However, a theoretical framework that is able to accurately predict the controlled growth and etching kinetics based on their underlying mechanisms is not yet available. In this work, we formulate a kinetic Monte Carlo model to predict the pattern evolution, edg ...
DOI:
10.1016/j.carbon.2019.02.016

18. Structure-dependent electrical properties of graphene nanoribbon devices with graphene electrodes

Author:
Martini, Leonardo; Chen, Zongping; Mishra, Neeraj; Barin, Gabriela Borin; Fantuzzi, Paolo; Ruffieux, Pascal; Fasel, Roman; Feng, Xinliang; Narita, Akimitsu; Coletti, Camilla; Müllen, Klaus; Candini, Andrea
Source:
Carbon 2019 v.146 pp. 36-43
ISSN:
0008-6223
Subject:
nanomaterials,   etc   ; electrical properties; electrodes; electronics; graphene; transistors;     Show all 6 Subjects
Abstract:
... Graphene nanoribbons (GNRs) are a novel and intriguing class of materials in the field of nanoelectronics, since their properties, solely defined by their width and edge type, are controllable with high precision directly from synthesis. Here we study the correlation between the GNR structure and the corresponding device electrical properties. We investigated a series of field effect devices consi ...
DOI:
10.1016/j.carbon.2019.01.071

19. Assembly of silica rods into tunable branched living nanostructures mediated by coalescence of catalyst droplets

Author:
Cai, Chunhua; Ge, Yinbiao; Lin, Jiaping; Xu, Zhanwen; Gao, Hongbing; Xu, Wenheng
Source:
Chemical communications 2019 v.55 no.30 pp. 4391-4394
ISSN:
1364-548X
Subject:
nanomaterials,   etc   ; catalysts; chemical reactions; colloids; droplets; silica;     Show all 6 Subjects
Abstract:
... Branched nanostructures with tunable arm numbers were prepared through the assembly of silica rods mediated by coalescence of catalyst droplets on the end of the rods. The formed primary branched colloids retain living characteristics similar to the original ones, that is, they can further assemble into multilevel and hierarchical branched structures. ...
DOI:
10.1039/c9cc00959k

20. Designing Structural-Color Patterns Composed of Colloidal Arrays

Author:
Kim, Jong Bin; Lee, Seung Yeol; Lee, Jung Min; Kim, Shin-Hyun
Source:
ACS applied materials & interfaces 2019 v.11 no.16 pp. 14485-14509
ISSN:
1944-8252
Subject:
nanomaterials,   etc   ; color; crystals; optical properties; pigments; toxicity;     Show all 6 Subjects
Abstract:
... Structural coloration provides a great potential for various applications due to unique optical properties distinguished from conventional pigment colors. Structural colors are nonfading, iridescent, and tunable, which is difficult to achieve with pigments. In addition, structural color is potentially less toxic than pigments. However, it is challenging to develop structural colors because elabora ...
DOI:
10.1021/acsami.8b21276