Molecular Design Principles for Near-Infrared Absorbing and Emitting Indolizine Dyes.
Desirable components for dye-sensitzed solar cell (DSC) sensitizers and fluorescent imaging dyes include strong donating building blocks coupled with well-balanced acceptor functionalities for absorption beyond the visible range. We have evaluated the effects of increasing acceptor strengths and incorporation of dye morphology controlling groups on molar absorptivity and absorption breadth with indolizine donor-based dyes. Indolizine-based D-A and D-π-A sensitizers incorporating bis-rhodanine, tricyanofuran (TCF), and cyanoacrylic acid functionalities were analyzed for performance in DSC devices. The TCF derivatives were also evaluated as near-infrared (NIR)-emissive materials with the AH25 emissions extending past 1000 nm.
Department of Chemistry and Biochemistry, University of Mississippi, MS, 38677, USA.|Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, School of Basic Sciences, Swiss Federal Institute of Technology, 1951, Sion, Switzerland.
Aron J
AJ
Huckaba
Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, School of Basic Sciences, Swiss Federal Institute of Technology, 1015, Lausanne, Switzerland.|Department of Metallurgical Engineerging and Materials Science, Indian Institute of Technology; Bombay, Powai, Mumbai, 400-076, India.
Aswani
A
Yella
Department of Chemistry and Biochemistry, University of Mississippi, MS, 38677, USA.
Louis E
LE
McNamara
Department of Chemistry and Biochemistry, University of Mississippi, MS, 38677, USA.
April E
AE
Steen
Department of Chemistry and Biochemistry, University of Mississippi, MS, 38677, USA.
J Scott
JS
Murphy
Department of Chemistry and Biochemistry, University of Mississippi, MS, 38677, USA.
Casey A
CA
Carpenter
Department of Chemistry and Biochemistry, University of Mississippi, MS, 38677, USA.
George D
GD
Puneky
Department of Chemistry and Biochemistry, University of Mississippi, MS, 38677, USA.
Nathan I
NI
Hammer
Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, School of Basic Sciences, Swiss Federal Institute of Technology, 1951, Sion, Switzerland.
Mohammad Khaja
MK
Nazeeruddin
Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, School of Basic Sciences, Swiss Federal Institute of Technology, 1015, Lausanne, Switzerland.
Michael
M
Grätzel
Department of Chemistry and Biochemistry, University of Mississippi, MS, 38677, USA. delcamp@olemiss.edu.
Jared H
JH
Delcamp
NIR dye; donor-acceptor systems; dye-sensitized solar cells; dyes/pigments; indolizine