Uh, Hyounsoo
(2012)
DESIGN, SYNTHESIS AND APPLICATION OF VISIBLE AND NEAR INFRARED LUMINESCENT LANTHANIDE COMPLEXES: FROM SMALL MOLECULES TO MACROMOLECULES.
Doctoral Dissertation, University of Pittsburgh.
(Unpublished)
Abstract
Luminescent lanthanide complexes have great potential for practical applications such as fluoroimmunoassay, polymer-based optical signal amplifiers, active materials in lasers and bio-imaging. Interest in the lanthanide cations as luminescent probes stems from their unique photophysical properties such as sharp emission bands, photostability and long luminescence lifetimes. In order to generate a sufficient number of photons allowing sensitive detection, lanthanide cations must be sensitized with suitable antennae that possess the appropriate electronic structure and that can sufficiently protect the cation from high energy vibrations to prevent the non-radiative deactivation of the lanthanide luminescence. In this thesis, it has been demonstrated that a series of salophen derivatives can be used as an efficient sensitizer for near-infrared emitting lanthanide cations, and derivatives of naphthalimide-attached polyamidoamine (PAMAM) dendrimers can be used as suitable ligands for visible and near infrared emitting lanthanide cations. These systems fulfill the requirements for lanthanide luminescence by forming stable coordination with lanthanide cations, protecting lanthanide cations from non-radiative deactivation and having suitable energy levels for efficient energy transfer to specific lanthanide cations. By introducing functional groups on the surface of dendrimer complex, the physical and photophysical properties of the complex can be controlled. It has been demonstrated that the versatility of dendrimer-lanthanide complexes as backbones for a broad variety of applications.
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| Item Type: |
University of Pittsburgh ETD
|
| Status: |
Unpublished |
| Creators/Authors: |
|
| ETD Committee: |
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| Date: |
4 October 2012 |
| Date Type: |
Publication |
| Defense Date: |
7 August 2012 |
| Approval Date: |
4 October 2012 |
| Submission Date: |
8 August 2012 |
| Access Restriction: |
5 year -- Restrict access to University of Pittsburgh for a period of 5 years. |
| Number of Pages: |
262 |
| Institution: |
University of Pittsburgh |
| Schools and Programs: |
Dietrich School of Arts and Sciences > Chemistry |
| Degree: |
PhD - Doctor of Philosophy |
| Thesis Type: |
Doctoral Dissertation |
| Refereed: |
Yes |
| Uncontrolled Keywords: |
lanthanide, luminescence, coordination, dendrimer, imaging |
| Date Deposited: |
04 Oct 2012 19:46 |
| Last Modified: |
04 Oct 2017 05:15 |
| URI: |
http://d-scholarship.pitt.edu/id/eprint/13491 |
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