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Porphyrin nanotubes (PNTs) are prepared by self-assembly using meso-tetrakis (4-sulfonatophenyl) porphyrin and Fe(III) meso-Tetra (N-Methyl-4-Pyridyl) porphyrin in water as starting materials. Long tubes of about one micron diameter are…

原子物理 · 物理学 2009-01-06 Jyotsana Gupta , C. Vijayan

Today's supercapacitor energy storages are typically discrete devices aimed for printed boards and power applications. The development of autonomous sensor networks and wearable electronics and the miniaturisation of mobile devices would…

In this work, we have designed obtained a novel multiferroic nanocomposite using the high-pressure torsion (HPT) method. The crystal structure, phase composition, morphology, ferromagnetic (FM) and ferroelectric (FE) properties of the…

The synthesis of nanocomposite materials combining titanate nanofibers (TNF) with nanocrystalline ZnS and Bi2S3 semiconductors is described in this work. The TNF were produced via hydrothermal synthesis and sensitized with the semiconductor…

材料科学 · 物理学 2015-03-31 T. J. Entradas , J. C. Cabrita , B. Barrocas , M. R. Nunes , A. J. Silvestre , O. C. Monteiro

The preparation method of thermoelectric PbTe-CdTe semiconductor nanocomposite in the form of a bulk material doped with Bi, I or Na, intended for production the mid-temperature thermoelectric energy generators is presented. The method…

材料科学 · 物理学 2023-06-16 M. Szot , K. Dybko , A. Mycielski , A. Reszka , R. Minikayev , P. Dziawa , T. Story

We show the possibility of tailoring the molecular arrangement, as well as the chemical and structural modifications, of porphyrins at the monolayer saturation coverage on TiO2(110) by Synchrotron photoemission, electron diffraction, STM…

Nitrogen-doped carbon nanotubes can provide reactive sites on the porphyrin-like defects. It's well known that many porphyrins have transition metal atoms, and we have explored transition metal atoms bonded to those porphyrin-like defects…

材料科学 · 物理学 2015-05-27 J. M. de Almeida , A. R. Rocha , A. J. R. da Silva , A. Fazzio

A key challenge in drug delivery systems is the real time monitoring of delivered drug and subsequent response. Recent advancement in nanotechnology has enabled the design and preclinical implementation of novel drug delivery systems (DDS)…

定量方法 · 定量生物学 2017-01-11 Nitish Manu George

Noncollinear (NC) magnetism and spin-orbit coupling (SOC) are indispensable for predictive ab initio materials simulations with pronounced relativistic effects and magnetic frustration, yet they significantly increase the cost of…

Cryptomelane has been widely applied as catalyst in oxidation reactions due to its excellent redox properties and low cost. Here, a novel one-pot hydrothermal synthesis using a potassium permanganate aqueous solution as precursor and…

There is a strong interest to attach nanoparticles non-covalently to one-dimensional systems like boron nitride nanotubes to form composites. The combination of those materials might be used for catalysis, in solar cells, or for water…

介观与纳米尺度物理 · 物理学 2017-02-01 Mirjam Volkmann , Michaela Meyns , Rostyslav Lesyuk , Hauke Lehmann , Christian Klinke

We present a nanocomposite gel that efficiently adsorbs a toxic and non-biodegradable cationic dye (methylene blue) from water. This nanocomposite gel is synthesized using chitosan, silica, and titanium dioxide nanoparticles (TiO2 NPs) as…

化学物理 · 物理学 2021-12-28 Tamal Sarkar

Multiferroic particulate composites $(1-x)$ Ba$_{0.95}$Ca$_{0.05}$Ti$_{0.89}$Sn$_{0.11}$O$_3$-$(x)$CoFe$_2$O$_4$ with ($x$ = 0.1, 0.2, 0.3, 0.4 and 0.5) have been prepared by mechanical mixing of the calcined and milled individual ferroic…

A first-principles study of small CdnSen Quantum Dots (QD) ('n' =6, 12, 13, and 33) has been performed for application to QD solar cell development. We separately assess the effects of the particle size and the passivating ligands upon the…

介观与纳米尺度物理 · 物理学 2013-08-22 Shanshan Wu , Michael McGuigan , Amanda L. Tiano , Stanislaus S. Wong , James G. Glimm

Concentrated fabric conditioners are water-based formulations containing 10 wt. % of cationic surfactants that are deposited on textile fibers during the rinse cycle in a washing machine to make them smoother and softer to touch. In topical…

Advanced bioactive systems with defined macroscopic properties and spatio-temporal sequestration of extracellular biomacromolecules are highly desirable for next generation therapeutics. Here, chitosan hydrogels were prepared with neutral…

化学物理 · 物理学 2013-10-29 Giuseppe Tronci , Hiroharu Ajiro , Stephen J. Russell , David J. Wood , Mitsuru Akashi

A classical density functional theory (cDFT) based on the PC-SAFT equation of state is proposed for the calculation of adsorption equilibria of pure substances and their mixtures in covalent organic frameworks (COFs). Adsorption isotherms…

统计力学 · 物理学 2021-03-24 Christopher Kessler , Johannes Eller , Joachim Gross , Niels Hansen

We have used simple chemical bath deposition technique to grow nearly monodispersive CdS nanocrystals in PVP matrix. Systematic study of variation of growth parameters has revealed that optimized growth of CdS nanocrystals in PVP matrix…

介观与纳米尺度物理 · 物理学 2014-06-18 Alka A Ingale , Rahul Aggarwal , Ekta Rani , Komal Bapna , Pragya Tiwari , Arvind K Srivastava

On-surface metal porphyrins can undergo electronic and conformational changes that play a crucial role in determining the chemical reactivity of the molecular layer. Therefore, understanding those properties is pivotal for the design and…

Water is a fundamental component of life, playing a critical role in regulating metabolic processes and facilitating the dissolution and transport of essential molecules. However, the presence of emerging contaminants, such as…