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41.
Transient bioelectronics: Electronic properties of silver microparticle‐based circuits on polymeric substrates subjected to mechanical load
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Reihaneh Jamshidi Simge Çinar Yuanfen Chen Nastaran Hashemi Reza Montazami 《Journal of Polymer Science.Polymer Physics》2015,53(22):1603-1610
Transient soft bioelectronics are capable of forming conformal contacts with curvilinear surfaces of biological host tissues and organs. Such systems are often subject to continuous static and dynamic loads from the biological host. In this article, we present investigation of electronic attributes of transient soft bioelectronic circuits subjected to mechanical force and influence of substrate's transiency on the transiency of the whole device; also, characterize and quantify loss of functionality in triggered devices. Variations in the electrical conductivity of circuits as a function of applied mechanical load was used as a means to deduce electronic characteristics under stress. The experimental results suggest that there exists a correlation between electronic properties of circuits and applied mechanical strain; no clear correlation was, however, observed between electronic properties of circuits and frequency of the applied dynamic load. Control over transiency rate of identical circuits utilizing the transiency characteristics of the poly(vinyl alcohol)l‐based substrates is also studied and demonstrated. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2015 , 53, 1603–1610 相似文献
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Maryam Nourian Farnaz Zadehahmadi Reihaneh Kardanpour Shahram Tangestaninejad Majid Moghadam Valiollah Mirkhani Iraj Mohammadpoor‐Baltork 《应用有机金属化学》2018,32(1)
The catalytic activity of magnetically recoverable MIL‐101 was investigated in the oxidation of alkenes to carboxylic acids and cyanosilylation of aldehydes. MIL‐101 was treated with Fe3O4 and the prepared catalyst was characterized using Fourier transform infrared spectroscopy, X‐ray diffraction, N2 adsorption measurements, field emission scanning electron microscopy, energy‐dispersive X‐ray spectroscopy and inductively coupled plasma analysis. The catalytic active sites in this heterogeneous catalyst are Cr3+ nodes of the MIL‐101 framework. This heterogeneous catalyst has the advantages of excellent yields, short reaction times and reusability several times without significant decrease in its initial activity and stability in both oxidation and cyanosilylation reactions. Its magnetic property allows its easy separation using an external magnetic field. 相似文献
43.
Highly efficient protection of alcohols and phenols catalysed by tin porphyrin supported on MIL‐101
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Farnaz Zadehahmadi Shahram Tangestaninejad Majid Moghadam Valiollah Mirkhani Iraj Mohammadpoor‐Baltork Reihaneh Kardanpour 《应用有机金属化学》2015,29(4):209-215
The catalytic activity of 5,10,15,20‐tetrakis(4‐aminophenyl)porphyrinatotin(IV) trifluoromethanesulfonate, [SnIV(TNH2PP)(OTf)2], supported on chloromethylated MIL‐101, was investigated in the trimethylsilylation of alcohols and phenols with hexamethyldisilazane (HMDS) and also their tetrahydropyranylation with 3,4‐dihydro‐2H‐pyran. Excellent yields, mild reaction conditions, short reaction times and reusability of the catalyst without significant decrease in its initial activity are noteworthy advantages of this supported catalyst. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献
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Jie Wei Reihaneh Amirbeigiarab Yan‐Xia Chen Sung Sakong Axel Gross Olaf M. Magnussen 《Angewandte Chemie (International ed. in English)》2020,59(15):6182-6186
CO adlayers on Pt(111) electrode surfaces are an important electrochemical system and of great relevance to electrocatalysis. The potential‐dependent structure and dynamics of these adlayers are complex and still controversial, especially in the CO pre‐oxidation regime. We here employ in situ high‐speed scanning tunneling microscopy for studying the surface phase behavior in CO‐saturated 0.1 m H2SO4 on the millisecond time scale. At potentials near the onset of CO pre‐oxidation local fluctuations in the (2×2)‐CO adlayer are observed, which increase towards more positive potentials. Above 0.20 V (vs. Ag/AgCl), this leads to an adlayer where COad apparently reside on every top site, but still exhibit a (2×2) superstructure modulation. We interpret this observation as a dynamic effect, caused by a small number of highly mobile point defects in the (2×2)‐CO adlayer. As shown by density functional theory calculations, the CO lattice near such defects relaxes into a local (1×1) arrangement, which can rapidly propagate across the surface. This scenario, where a static (2×2) COad sublattice coexists with a highly dynamic sublattice of partially occupied top sites, explains the pronounced COad surface mobility during electrooxidation. 相似文献
46.
Reihaneh Malakooti Zeinab Parsaee Rahele Hosseinabadi Hossein A. Oskooie Majid M. Heravi Mina Saeedi Maryam Amrollah Akram Fallah 《Comptes Rendus Chimie》2013,16(9):799-806
A novel [Cu(bpdo)2·2H2O]2+-supported SBA-15 catalyst (bpdo = 2,2′-bipyridine,1,1′-dioxide) was prepared by the impregnation method. The catalyst was characterized by XRD, TEM, and BET nitrogen adsorption–desorption method, FT-IR, UV–vis, and chemical analysis. XRD patterns and TEM analysis of [Cu(bpdo)2·2H2O]2+/SBA-15 showed highly ordered hexagonal mesoporous silica, even after immobilization. Also, nitrogen adsorption–desorption isotherms exhibited type-IV isotherms and H1 hysteresis loops according to the IUPAC classification of mesoporous materials. This green support was tested for the synthesis of benzoxanthenone and benzochromene derivatives under solvent-free conditions, with high yield of products via a simple experimental and work-up procedure. 相似文献
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Peytam Fariba Adib Mehdi Shourgeshty Reihaneh Mohammadi-Khanaposhtani Maryam Jahani Mehdi Imanparast Somaye Faramarzi Mohammad Ali Mahdavi Mohammad Moghadamnia Ali Akbar Rastegar Hossein Larijani Bagher 《Molecular diversity》2020,24(1):69-80
Molecular Diversity - A new series of imidazo[1,2-b]pyrazole derivatives 4a–o was designed, synthesized, and screened for in vitro α-glucosidase inhibitory activity. All compounds showed... 相似文献
48.
Fangguo Zhang Reihaneh Safavi-Naini Willy Susilo 《Applied mathematics and computation》2005,170(2):1166-1169
In ACM conference on electronic commerce (EC’03), Han et al. [Identity-based confirmer signatures from pairings over elliptic curves, in: Proceedings of ACM Conference on Electronic Commerce Citation 2003, San Diego, CA, USA, June 09–12, 2003, pp. 262–263] proposed an ID-based confirmer signature scheme using pairings (the scheme is in fact an ID-based undeniable signature scheme). In this paper, we show that this signature scheme is not secure and the signer can deny any signature, even if it is a valid signature, and any one can forge a valid confirmer signature of a signer with identity ID on an arbitrary message and confirm this signature to the verifier. 相似文献
49.
In this paper, an interactive paired comparison simplex based method formultiple objective linear programming (MOLP) problems
is developed and compared to other interactive MOLP methods. The decision maker (DM)’s utility function is assumed to be unknown,
but is an additive function of his known linearized objective functions. A test for ‘utility efficiency’ for MOLP problems
is developed to reduce the number of efficient extreme points generated and the number of questions posed to the DM. The notion
of ‘strength of preference ’ is developed for the assessment of the DM’s unknown utility function where he can express his
preference for a pair of extreme points as ‘strong ’, ‘weak ’, or ‘almost indifferent ’. The problem of ‘inconsistency of
the DM’ is formalized and its resolution is discussed. An example of the method and detailed computational results comparing
it with other interactive MOLP methods are presented. Several performance measures for comparative evaluations of interactive
multiple objective programming methods are also discussed.
All rights reserved. This study, or parts thereof, may not be reproduced in any form without written permission of the authors. 相似文献
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The highly reactive 1:1 adduct, produced from the reaction between dialkyl acetylenedicarboxylates and alkyl isocyanides, was trapped by strong cyclic CH-acids such as 4-hydroxy-6-methyl-2H-pyran-2-one or 4-hydroxycoumarin to yield dialkyl 2-(alkylamino)-5-oxo-4H,5H-pyrano[3,2-c]chromene-3,4-dicarboxylates or dialkyl 7-methyl-2-(alkylamino)-5-oxo-4H,5H-pyrano[4,3-b]pyran-3,4-dicarboxylates in good yields at room temperature. 相似文献