Here we nanoengineered tunable quantum dot and cationic conjugated polymer nanoarrays based on surface plasmon
enhanced fluorescence where we achieved a 15-fold and 25-fold increase in their emission intensities, respectively.
These peptide mediated hybrid systems were fabricated by horizontally tuning the localized surface plasmon resonance
of gold nanoarrays and laterally tuning the distance of the fluorophore from the metal surface. This approach permits a
comprehensive control both laterally (i.e., lithographically defined gold nanoarrays) and vertically (i.e., QD/CCP-metal
distance) of the collectively behaving QD-NP and CP-NP assemblies by way of biomolecular recognition. The highest
photoluminescence was achieved when the quantum dots and cationic conjugated polymers were self-assembled at a
distance of 16.00 nm and 18.50 nm from the metal surface, respectively. Specifically, we demonstrated the spectral
tuning of plasmon resonant metal nanoarrays and the self-assembly of protein-functionalized QDs/CCPs in a step-wise
fashion with a concomitant incremental increase in separation from the metal surface through biotin-streptavidin spacer
units. These well-controlled self-assembled patterned arrays provide highly organized architectures for improving optoelectronic
devices and/or increasing the sensitivity of bio-chemical sensors.
Conference Committee Involvement (2)
Bioinspiration, Biomimetics, and Bioreplication
7 March 2011 | San Diego, California, United States
Plasmonics: Metallic Nanostructures and Their Optical Properties
3 August 2003 | San Diego, California, United States
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.