Enhancing the properties of ruthenium dyes by dendronization

An, Byeong-Kwan, Burn, Paul L. and Meredith, Paul (2009) Enhancing the properties of ruthenium dyes by dendronization. Chemistry of Materials, 21 14: 3315-3324. doi:10.1021/cm900838b


Author An, Byeong-Kwan
Burn, Paul L.
Meredith, Paul
Title Enhancing the properties of ruthenium dyes by dendronization
Journal name Chemistry of Materials   Check publisher's open access policy
ISSN 0897-4756
Publication date 2009-05-29
Year available 2009
Sub-type Article (original research)
DOI 10.1021/cm900838b
Open Access Status
Volume 21
Issue 14
Start page 3315
End page 3324
Total pages 10
Editor Leonard V. Interrante
Place of publication United States
Publisher American Chemical Society
Language eng
Subject C1
970102 Expanding Knowledge in the Physical Sciences
970103 Expanding Knowledge in the Chemical Sciences
020404 Electronic and Magnetic Properties of Condensed Matter; Superconductivity
020499 Condensed Matter Physics not elsewhere classified
020504 Photonics, Optoelectronics and Optical Communications
030207 Transition Metal Chemistry
030303 Optical Properties of Materials
030304 Physical Chemistry of Materials
030503 Organic Chemical Synthesis
091208 Organic Semiconductors
Abstract A family of dendrimers comprising [cis-di(thiocyanato)-({4,4'-dicarboxy}-2,2'-bipyridyl)-(4,4'-divinyl-2,2'-bipyridine)]ruthenium(II) cores, first-generation biphenyl-based dendrons and 2-ethyl-hexyloxy surface groups have been prepared. The dendrimers differ in the number of surface groups attached to the dendrons. The dendrimers were found to be more thermally stable than the corresponding simple complex, [cis-di(thiocyanato)-(bis{4,4'-dicarboxy}-2,2'-bipyridyl)]ruthenium (II) (N3), and to aggregate less in solution, The dendrimers were found to bind to titanium dioxide substrates via the two carboxyl groups oil the bipyridyl unit. Importantly, the dendrimers were found to be significantly less susceptible to desorption. N3 desorbed rapidly from the titanium dioxide substrates while the dendrimers were still mostly adsorbed even after a day under the same conditions. The dendrimers all formed efficient devices with the best having an efficiency of 6.3 +/- 0.1%, which compares favorably to N3 with an efficiency of 6.9 +/- 0.1% in the same device configuration.
Keyword SENSITIZED SOLAR-CELLS
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID KRF-2005-214-D00268
Institutional Status UQ

 
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Created: Thu, 03 Sep 2009, 17:48:24 EST by Mr Andrew Martlew on behalf of School of Chemistry & Molecular Biosciences