نتایج جستجو برای: hybrid organic

تعداد نتایج: 387024  

Journal: :Nanoscale 2015
V Svrcek T Yamanari D Mariotti S Mitra T Velusamy K Matsubara

Silicon nanocrystal (Si-nc) down-conversion is demonstrated to enhance organic and hybrid organic/inorganic bulk heterojunction solar cells based on PTB7:[70]PCBM bulk heterojunction devices. Surfactant free surface-engineered Si-ncs can be integrated into the device architecture to be optically active and provide a means of effective down-conversion of blue photons (high energy photons below ∼...

2015
N. Aamina Nismy K. D. G. Imalka Jayawardena A. A. Damitha T. Adikaari S. Ravi P. Silva

Organic-inorganic hybrid photovoltaics are beginning to show significant promise as a low cost highly efficient route towards renewable energy generation. Of the hybrid architectures available, carbon nanotube incorporated organic photovoltaics is considered to be among the most promising. Herein, the optical and electronic effects of localizing multiwalled carbon nanotubes in the donor polymer...

2010
Xiaoyu Wang Pan Wang Zihao Dong Zhengping Dong Zongyan Ma Jian Jiang Rong Li Jiantai Ma

An inorganic-organic hybrid fluorescence chemosensor (DA/SBA-15) was prepared by covalent immobilization of a dansylamide derivative into the channels of mesoporous silica material SBA-15 via (3-aminopropyl)triethoxysilane (APTES) groups. The primary hexagonally ordered mesoporous structure of SBA-15 was preserved after the grafting procedure. Fluorescence characterization shows that the obtain...

2010
Yongcai Qiu Shihe Yang Hong Deng Limin Jin Weishan Li

In this paper, we report a successful synthesis of porous ZnCo2O4 nanoflakes by a morphologyconserved and pyrolysis-induced transformation of novel hexagonally shaped, highly ordered, and inorganic–organic–inorganic layered hybrid nanodisks. It is shown that the hexagonal hybrid nanodisks are constructed from organic molecule (ethylene glycol)-directed assembly of inorganic bilayers. The assemb...

2013
Kong Liu Shengchun Qu Xinhui Zhang Furui Tan Zhanguo Wang

Silicon nanowire (SiNW) arrays show an excellent light-trapping characteristic and high mobility for carriers. Surface plasmon resonance of silver nanoparticles (AgNPs) can be used to increase light scattering and absorption in solar cells. We fabricated a new kind of SiNW/organic hybrid solar cell by introducing AgNPs. Reflection spectra confirm the improved light scattering of AgNP-decorated ...

Journal: :Organic & biomolecular chemistry 2011
Luis Simón Jonathan M Goodman

There have been many comparisons of computational methods applied to ground states, but studies of organic reactions usually require calculations on transition states, and these provide a different test of the methods. We present calculations of the geometries of nineteen covalent-bond forming transition states using HF and twelve different functionals, including GGA, hybrid-GGA and hybrid meta...

Journal: :Physical review letters 2013
Yong Xu Oliver T Hofmann Raphael Schlesinger Stefanie Winkler Johannes Frisch Jens Niederhausen Antje Vollmer Sylke Blumstengel Fritz Henneberger Norbert Koch Patrick Rinke Matthias Scheffler

We discuss density functional theory calculations of hybrid inorganic-organic systems that explicitly include the global effects of doping (i.e., position of the Fermi level) and the formation of a space-charge layer. For the example of tetrafluoro-tetracyanoquinodimethane on the ZnO(0001[over ¯]) surface we show that the adsorption energy and electron transfer depend strongly on the ZnO doping...

2018
Olga Nazarenko Martin R Kotyrba Sergii Yakunin Marcel Aebli Gabriele Rainò Bogdan M Benin Michael Wörle Maksym V Kovalenko

Two-dimensional hybrid organic-inorganic lead halides perovskite-type compounds have attracted immense scientific interest due to their remarkable optoelectronic properties and tailorable crystal structures. In this work, we present a new layered hybrid lead halide, namely [CH(NH2)2][C(NH2)3]PbI4, wherein puckered lead-iodide layers are separated by two small and stable organic cations: formami...

2014
Yong-Hong Zhao Daniel F. Shantz Richard P. Moody

The synthesis and characterization of organic–inorganic hybrid materials that selectively capture sugars from model biomass hydrolysis mixtures are reported. 3-Aminophenylboronic acid (PBA) groups that can reversibly form cyclic esters with 1,2-diols, and 1,3-diols including sugars are attached to mesoporous SBA-15 via different synthetic protocols. In the first route, a coupling agent is used ...

2007
Edward J. Licitra J. Licitra

A primary area of investigation in pharmacology and medicine is the study of ligand-receptor interactions. The pharmacological basis of drug action is often the consequence of non-covalent interactions between small organic molecules and their high affinity receptors. In addition to their therapeutic potential these pharmacologically active ligands have recently been utilized as tools in the di...

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