نتایج جستجو برای: semiconducting organic compounds

تعداد نتایج: 405707  

Journal: :Chemical communications 2015
Jeremy I Feldblyum Clara H McCreery Sean C Andrews Tadanori Kurosawa Elton J G Santos Vincent Duong Lei Fang Alexander L Ayzner Zhenan Bao

In this work, we synthesize large-area thin films of a conjugated, imine-based, two-dimensional covalent organic framework at the solution/air interface. Thicknesses between ∼2-200 nm are achieved. Films can be transferred to any desired substrate by lifting from underneath, enabling their use as the semiconducting active layer in field-effect transistors.

Journal: :Nanoscale 2011
Arshad S Sayyad Kaushik Balakrishnan Pulickel M Ajayan

Uniform and crystalline nanofibers of perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA), an insoluble organic semiconducting molecule, have been achieved by self-assembling the molecules using chemical reaction mediated conversion of an appropriately designed soluble precursor, perylene tetracarboxylic acid (PTCA) using carbodiimide chemistry.

Journal: :Science advances 2016
Hajime Nakanotani Taro Furukawa Kei Morimoto Chihaya Adachi

Understanding exciton behavior in organic semiconductor molecules is crucial for the development of organic semiconductor-based excitonic devices such as organic light-emitting diodes and organic solar cells, and the tightly bound electron-hole pair forming an exciton is normally assumed to be localized on an organic semiconducting molecule. We report the observation of long-range coupling of e...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی استان فارس - دانشکده دندانپزشکی 1387

چکیده ندارد.

Journal: :Physical review letters 2012
Anindya Roy Joseph W Bennett Karin M Rabe David Vanderbilt

We use a first-principles rational-design approach to demonstrate the potential of semiconducting half-Heusler compounds as a previously unrecognized class of piezoelectric materials. We perform a high-throughput scan of a large number of compounds, testing for insulating character and calculating structural, dielectric, and piezoelectric properties. Our results provide guidance for the experim...

Journal: :Annali dell'Istituto superiore di sanita 2009
Anna Santarsiero Sergio Fuselli Alessandro Piermattei Roberta Morlino Giorgia De Blasio Marco De Felice Emanuela Ortolani

The assessment of indoor air volatile organic compounds (VOCs) concentration levels in dental settings has a big health relevance for the potentially massive occupational exposure to a lot of diverse contaminants. The comparison of the VOCs profile relative to indoor conditions and to the corresponding outdoor concentrations, as well as the discovery of possible correlations between specific de...

2005
Sylviane Lesieur Thierry Prangé Dominique Durand Michel Ollivon Geneviève Le Bas Ayesha Jacobs Luigi R. Nassimbeni Benjamin Taljaard

C288 this compound is crystallized from solutions in acethophenone as a host-guest complex with a ratio 2:3. In the crystal structure DEDA molecules form infinite chains in a direction [01-1] through a pair of centrosymmetric hydrogen bonds. The acethophenone molecules are situated inside different channels formed at stacking of these chains and running along [100] and [0-11] directions. At dec...

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