Tunable Phosphorescent Emission through Energy Transfer within Multilayer Thin Films Based on a Carbazole-Based Host and Ir(III)-Complex Guest System
- 2 June 2009
- journal article
- research article
- Published by Wiley in Macromolecular Rapid Communications
- Vol. 30 (14), 1232-1237
- https://doi.org/10.1002/marc.200900023
Abstract
A new method to tune both phosphorescence emission intensity and spectroscopic colors based on the alternatively structured host/guest multilayer thin films prepared by the spin-assisted LbL deposition is presented. Their emission characteristics are demonstrated with pairs of positively charged Ir-PEI complexes as guests and negatively charged CBZ-PAA as hosts. The phosphorescent emission of Ir-PEI complexes is enhanced by the energy transfer from the host to the guest and, additionally, this energy transfer can be finely tuned by the insertion of spacer layers between the phosphorescent donor and acceptor layers to vary the emission intensity as well as to render different emission colors.Keywords
Funding Information
- Korea Science and Engineering Foundation (KOSEF) through the Acceleration Research (R17-2007-059-01000-0)
- NANO Systems Institute - National Core Research Center, Ministry of Education, Science and Technology (R15-2003-032-02002-0)
- MEST
- International Research Training Group (2006-IRTG-001)
- KOSEF
- Deutsche Forschungsgemeinschaft
This publication has 29 references indexed in Scilit:
- Graded‐Bandgap Quantum‐ Dot‐Modified Nanotubes: A Sensitive Biosensor for Enhanced Detection of DNA HybridizationAdvanced Materials, 2007
- Water-Soluble Perylene Diimides: Solution Photophysics and Layer-by-Layer Incorporation into Polyelectrolyte FilmsLangmuir, 2006
- Using a Layer‐by‐Layer Assembly Technique to Fabricate Multicolored‐Light‐Emitting Films of CdSe@CdS and CdTe Quantum DotsAdvanced Materials, 2006
- Bioconjugated Superstructures of CdTe Nanowires and Nanoparticles: Multistep Cascade Förster Resonance Energy Transfer and Energy ChannelingNano Letters, 2005
- Triplet Energy Migration in Layer-by-Layer Deposited Ultrathin Polymer Films Bearing Tris(2,2‘-bipyridine)ruthenium(II) MoietiesThe Journal of Physical Chemistry B, 2004
- Fast energy transfer in layer-by-layer assembled CdTe nanocrystal bilayersApplied Physics Letters, 2004
- Enhanced Förster Resonance Energy Transfer in Electrostatically Self-Assembled Multilayer Films Made from New Fluorescently Labeled PolycationsLangmuir, 2003
- Ultrathin polymer coatings by complexation of polyelectrolytes at interfaces: suitable materials, structure and propertiesMacromolecular Rapid Communications, 2000
- Förster Energy Transfer Studies of Polyelectrolyte Heterostructures Containing Conjugated Polymers: A Means To Estimate Layer InterpenetrationLangmuir, 1999
- Fuzzy Nanoassemblies: Toward Layered Polymeric MulticompositesScience, 1997