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https://hdl.handle.net/10316/100803| Title: | Polymeric near infrared emitters with bay-annulated indigo moieties | Authors: | Rodrigues, Ana Clara B. Eckert, Anika Pina, João Scherf, Ullrich Seixas de Melo, J. Sérgio |
Issue Date: | 2021 | Project: | Project ‘‘Hylight’’ (no. 031625) 02/SAICT/2017 PTDC/QUI-QFI/31625/2017 (COMPETE) and project ROTEIRO/0152/2013 FCT, UID/QUI/00313/2019–2020 Laserlab-Europe (grant agreement no. 284464, EC’s Seventh Framework Programme) |
Serial title, monograph or event: | Materials Advances | Volume: | 2 | Issue: | 11 | Abstract: | Three new copolymers based on bay-annulated indigo (BAI) building blocks were synthesized through Stille-type cross-coupling reactions, alternating the electron-deficient BAI units with thiophene-based donor moieties. These polymers showed absorption and fluorescence emission in the NIR region. Their spatial structures were found to prevent aggregation-caused quenching (ACQ) in the solid state. Photoluminescence at 77 K is found ca. four times more intense than at 293 K. Based on time-resolved photoluminescence experiments, the excited-state energy transfer hopping deactivation in the copolymers is discussed in terms of a Förster-type mechanism, with time constants ranging from 1010 to 1011 s-1. | URI: | https://hdl.handle.net/10316/100803 | ISSN: | 2633-5409 | DOI: | 10.1039/D1MA00260K | Rights: | openAccess |
| Appears in Collections: | I&D CQC - Artigos em Revistas Internacionais |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| Polymeric-near-infrared-emitters-with-bayannulated-indigo-moietiesMaterials-Advances.pdf | 2.77 MB | Adobe PDF | View/Open |
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