Journal
DYES AND PIGMENTS
Volume 146, Issue -, Pages 189-198Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2017.07.005
Keywords
Chlorophyll a; Chlorin; Fused-ring system; Porphyrinoids; Near-infrared dye
Funding
- National Natural Science Foundation of China [51472212]
- Natural Science Foundation of Shandong Province of China [ZR2015BQ012]
- University Science and Technology Plan of Shandong Province [J15LC51]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry
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Tandem reactions of methyl pyropheophorbide a with paraformaldehyde, reactive methylene compounds, and/or ammonium acetate provided novel pyrido[2,3-n]chlorophylls in good yields as the first examples of pyridine fused chlorophyll a derivatives, which displayed near-infrared absorptions (748 - 766 nm) with unusually broadened Q bands and small electrochemical HOMO-LUMO gaps (1.89 - 2.02 eV). (C) 2017 Elsevier Ltd. All rights reserved.
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