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Molecular Design Principles for Near‐Infrared Absorbing and Emitting Indolizine Dyes
Author(s) -
Huckaba Aron J.,
Yella Aswani,
McNamara Louis E.,
Steen April E.,
Murphy J. Scott,
Carpenter Casey A.,
Puneky George D.,
Hammer Nathan I.,
Nazeeruddin Mohammad Khaja,
Grätzel Michael,
Delcamp Jared H.
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201603165
Subject(s) - indolizine , molar absorptivity , fluorescence , acceptor , photochemistry , absorption (acoustics) , rhodanine , materials science , dye sensitized solar cell , chemistry , organic chemistry , optics , physics , electrode , electrolyte , composite material , condensed matter physics
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.