Results 11 to 20 of about 1,054 (130)
Navigating Nitration Chemistry: A Practical Guide to Reagents, Mechanisms, and Selectivity. [PDF]
Angew Chem Int Ed EnglThis review highlights key contributions of modern nitration chemistry, emphasizing sustainable mechanistic platforms and comparing the performance of both organic and inorganic reagents across aromatic, ipso‐, olefin, alkyne, and heteroatom nitration. It provides the community with a clearer, unified perspective on current advances and facilitates the
Lecomte H, Fernandes AJ, Katayev D.
europepmc +3 more sources
Fluorinated Para-Quinone Monoacetal: Versatile Reactivity for Constructing Functionalized Scaffolds. [PDF]
Chem Asian JA concise route to β,β′‐difluorinated para‐quinone monoacetals (p‐QMAs) unlocks their unique reactivity. With a cross‐conjugated dienone and an acetal unit, they engage in diverse nucleophilic additions and cycloadditions, offering powerful building blocks for complex molecules in natural product and materials chemistry.
Azami K, Morita M, Suzuki K, Ohmori K.
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Pd(II)/PIDA-Enabled Migratory Triple Functionalization of Terminal Alkenes via a 1,2-C/Pd(IV) Dyotropic Rearrangement. [PDF]
Angew Chem Int Ed EnglPd‐catalyzed reaction of homoallylic amides with phenyliodine(III) diacetate (PIDA) under Pd(II) catalysis delivers 6‐acetoxylated 5,6‐dihydro‐4H‐1,3‐oxazines through the formation of one C─C and two C─O bonds. Abstract We report a Pd(II)‐catalyzed migratory triple functionalization of terminal alkenes.
Liu CX, Wang Q, Zhu J.
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A planar inverted-F antenna-based chemical sensor for ion concentrations
Sensors and Actuators Reports, 2020 The development of new wireless sensing devices could provide significant opportunities for medical and environmental applications. A planar inverted-F antenna (PIFA) is a typical antenna that is widely used in communications. Here, we report here a PIFA
Xuesong Yao, Le Tong, Yue Cui
doaj +1 more source
International Journal of Antennas and Propagation, 2018 This paper focuses on a printed inverted-F antenna (PIFA) with meandering line and meandering shorting strip under 2.4 GHz industrial, scientific, and medical (ISM) band for Internet of things (IoT) applications.
Cheuk Yin Cheung +2 more
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Scientific Reports, 2021 This report suggests a method of enhancing the sensitivity of chemifluorescence-based ELISA, using photooxidation-induced fluorescence amplification (PIFA).
Youhee Heo +3 more
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An On-Chip Planar Inverted-F Antenna at 38 GHz for 5G Communication Applications
International Journal of Antennas and Propagation, 2022 This paper presents an on-chip planar inverted-F antenna (PIFA) implemented in TSMC 180 nm CMOS process technology. The antenna operates at a 5 G millimeter-wave center frequency of 38 GHz.
Syed Muhammad Ammar Ali
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Quad-band Multiple Input Multiple Output Modified PIFA Antenna for WLAN and LTE Mobile Applications
Majlesi Journal of Electrical Engineering, 2023 In this article, a multiple input multiple output quadrate frequency bands modified PIFA antenna is introduced for 4G LTE and WLAN applications. The quadrate proposed antenna covers LTE 1800 (1.71-1.88 GHz), LTE 1900 (1.85-1.99 GHz), UMTS (1.92-2.17 GHz),
Reza Khajeh Mohammad Lou +2 more
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Electrical, Control and Communication Engineering, 2018 Well-deployed cellular networks offer a cheap wireless solution for the control channel deployment of Remote-Control Vehicles (RCV) and Unmanned Aerial Vehicles (UAV).
Brodņevs Deniss, Kutins Aleksandrs
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International Journal of Antennas and Propagation, 2017 A new compact multiband PIFA (Planar Inverted-F Antenna) for mobile handset is proposed in this article. The proposed PIFA has a simple geometry with four slots integrated in the radiating patch and ground plane.
Mustapha El Halaoui +4 more
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