نتایج جستجو برای: charge transfer energy

تعداد نتایج: 1018830  

In the present work, the transition matrix elements as well as differential and total scattering cross-sections for positronium formation in Positron-Hydrogen atom collision and hydrogen formation in Positronium-Hydrogen ion collision, through the charge transfer channel by Two-Centre Close-Coupling method up to a first order approximation have been calculated. The charge transfer collision is ...

Mahdi Rezaei Sameti, Sedigheh Azadi doureh

In this work, by using density functional theory, the adsorption of Nitramide (NH2NO2) molecule on the surface of pristine, B, As and B&As doped (4,4) armchair aluminum nitride nanotube (AlNNTs) is investigated. From optimized structures the adsorption energy, deformation energy, natural bond orbital (NBO), atom in molecule (AIM), quantum parameters, reduced density gradient (RDG) and molecular...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده مهندسی شیمی 1387

در این کار، مدل دوبعدی برای یک پیل سوختی غشای تبادل یونی توسعه داده شده است. مدل برای کل پیل سوختی صورت گرفته است که شامل لایه نفوذ گازی کاتدی، لایه نفوذ گازی آندی و غشا می باشد. این مدل دربردارنده انتقال جرم در لایه های نفوذ گازی، واکنش الکتروشیمیایی در لایه های کاتالیستی، انتقال بار و انتقال انرژی در کل قسمت های پیل سوختی می باشد. این معادلات حاکم با روش المان محدود حل شده اند. مدل ریاضی قا...

The storage capacity of hydrogen on Na-decorated born nitride nanotubes (BNNTs) is investigated by using density functional theory within Quantum Espresso and Gaussian 09. The results obtained predict that a single Na atom tends to occupy above the central region of the hexagonal rings in (5,0) and (3,3) BNNT structures with a binding energy of -2.67 and -4.28 eV/Na-atom respectively. When a si...

Epoxy and dicyclopentadien (DCPD) are two common healing agents, which are introduced into epoxy matrix through encapsulation in order to prepare self-healing composites. In a comparative study, the compatibility of healing agents and epoxy matrix is investigated through experimental tests and DFT calculations. The interaction energy is considered to be the determinative parameter in DFT calcul...

Journal: :Journal of the American Chemical Society 2005
K R Justin Thomas Alexis L Thompson Aathimanikandan V Sivakumar Christopher J Bardeen S Thayumanavan

Nonconjugated dendrimers, which are capable of funneling energy from the periphery to the core followed by a charge-transfer process from the core to the periphery, have been synthesized. The energy and electron donors involve a diarylaminopyrene unit and are incorporated at the periphery of these dendrimers. The energy and electron acceptor is at the core of the dendrimer, which involves a chr...

Journal: :Bulletin of the Chemical Society of Japan 1970

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

in the present work, the structural and electronic properties, and conductivity of (5,5) and (6,6) single walled carbon nanotubes in the ground state have done by using the hartree-fock and density functional theory dft-b3lyp/6-31g* level. delocalization of charge density between the bonding or lone pair and antibonding orbitals calculated by nbo (natural bond orbital) analysis. these methods a...

Journal: :Journal of chemical theory and computation 2013
Alston J Misquitta

The charge-transfer (CT) together with the polarization energy appears at second and higher orders in symmetry-adapted perturbation theory (SAPT). At present there is no theoretically compelling way of isolating the charge-transfer energy that is simultaneously basis-set independent and applicable for arbitrary intermolecular separation. We argue that the charge-transfer can be interpreted as a...

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