Nard Institute Ltd. and Murata Manufacturing Co. | Date: 2013-03-28
An electrode active material is based on an organic compound containing in the structural unit thereof a pyrazine structure bound to cycloalkane. The electrode active material and a secondary battery containing it have large energy density, outputting high power, and having excellent cycle characteristics with little reduction in capacity even after repetition of charging and discharging.
Maeda T.,Osaka Prefecture University |
Nakao H.,NARD Institute Ltd. |
Kito H.,Osaka Prefecture University |
Ichinose H.,Osaka Prefecture University |
And 2 more authors.
Dyes and Pigments | Year: 2011
Novel squarylium dyes with either terminally placed tetracyanoquinodimethane or tetracyanoanthraquinodimethane moieties as strong electron acceptors were designed and synthesized for use as sensitizers for TiO2-based dye-sensitized solar cells (DSSCs). The photovoltaic performance of DSSCs indicates that two chromophores, strong electron acceptors and squarylium components, make independent contributions to photosensitization of nanocrystalline TiO2. DSSCs fabricated from squarylium-based diads as sensitizers and chenodeoxycholic acid as the coadsorbent exhibited a high open-circuit voltage (up to 0.66 V), suggesting that the electron-accepting components showed some effect on electron injection from the squarylium chromophore to the conduction band of TiO2. Under the coadsorbent-free conditions, the short-circuit photocurrent and overall solar-to-electrical energy conversion efficiency of the photovoltaic cells was improved by the contribution of photosensitizing effect in the wavelength range derived from the electron-acceptor components rather than the squarylium component. This phenomenon implies the possibility that the electron-accepting group acts as an anchoring unit to the TiO2 surface. © 2011 Elsevier Ltd. All rights reserved. Source
Nard Institute Ltd. | Date: 2016-03-08
Osaka University and Nard Institute Ltd. | Date: 2014-02-10
NARD Institute Ltd. | Date: 2013-12-27
The objective of the present invention is to provide a tyrosine derivative which is useful as a melatonin MT wherein R