- Authors
- Shunqi Xu Technische Universität Dresden, Center for Advancing Electronics Dresden (cfaed), Germany#Technische Universität Dresden, Faculty of Chemistry and Food Chemistry, Chair of Molecular Functional Materials, Germany
- Yungui LiTechnische Universität Dresden, Integrated Center for Applied Physics and Photonic Materials (IAPP), Chair for Organic Semiconductors, Germany
- Bishnu P. BiswalTechnische Universität Dresden, Center for Advancing Electronics Dresden (cfaed), Germany#Technische Universität Dresden, Faculty of Chemistry and Food Chemistry, Chair of Molecular Functional Materials, Germany
- Matthew A. Addicoat
- Silvia Paasch
- Paulius Imbrasas
- SangWook Park
- Huanhuan Shi
- Eike Brunner
- Marcus Richter
- Simone Lenk
- Sebastian Reineke
- Xinliang Feng
- title
- Luminescent sp²-Carbon-Linked 2D Conjugated Polymers with High Photostability
- Please use the following URL when quoting:
- https://nbn-resolving.org/urn:nbn:de:bsz:14-qucosa2-733624
- publication_date
- 2020
- Abstract (EN)
- Luminescent organic materials with high photostability are essential in optoelectronics, sensor, and photocatalysis applications. However, small organic molecules are generally sensitive to UV irradiation, giving rise to chemical decompositions. In this work, we demonstrate two novel CN-substituted two-dimensional sp²-carbon-linked conjugated polymers (2D CCPs) containing a chromophore triphenylene unit. The Knoevenagel polymerization between 2,3,6,7,10,11-hexakis(4-formylphenyl)triphenylene (HFPTP) and 1,4-phenylenediacetonitrile (PDAN) or 2,2’-(biphenyl-4,4’-diyl)diacetonitrile (BDAN), provides the crystalline 2D CCP-HFPTP-PDAN (2D CCP-1) and 2D CCP-HFPTP-BDAN (2D CCP-2) with dual pore structures, respectively. 2D CCP-1 and 2D CCP-2 exhibit the photoluminescence quantum yield (PLQY) up to 24.9% and 32.3%, which are the highest values among the reported 2D conjugated polymers and π-conjugated 2D covalent organic frameworks. Furthermore, compared with the well-known emissive small molecule tetrakis(carbazol-9-yl)-4,6-dicyanobenzene (4CzIPN), both 2D CCPs show superior photostability under UV irradiation for two hours, profiting from the twisted and rigid structures of the CN-substituted vinylene linkages. The present work will trigger the further explorations of novel organic emitters embedded in 2D CCPs with high PLQY and photostability, which can be useful for optoelectronic devices.
- otherVersion00000
- Link zum Artikel der zuerst in der Zeitschrift 'Chemistry of Materials' erschienen ist
DOI: 10.1021/acs.chemmater.0c02910 - Keywords (DE)
- körnige Materialien, Photostabilität, konjugierte Polymere, physikalische und chemische Prozesse, Bestrahlung
- Keywords (EN)
- granular materials, photostability, conjugated polymers, physical and chemical processes, irradiation
- Classification (DDC)
- 540
- Publishing house
- American Chemical Society, Washington, DC
- Project sponsoring
- Deutsche Forschungsgemeinschaft (DFG)
Chemie der synthetischen zweidimensionalen Materialien (CRC 1415)
ID: 417590517
Europäische Union (EU)
H2020-MSCA-ITN
Graphene Flagship (GrapheneCore3)
ID: 881603
European Commission (EC)
H2020
Development of Thiophene Based Conjugated Polymers in Two Dimensions (T2DCP)
ID: 819698
Deutsche Forschungsgemeinschaft (DFG)
Koordinationsnetzwerke als Bausteine für Funktionssysteme
Building Blocks for Functional Systems (COORNET)
ID: 434440165 - version
- angenommene Version / Postprint / Autorenversion
- URN Qucosa
- urn:nbn:de:bsz:14-qucosa2-733624
- Qucosa date of publication
- 28.09.2021
- Document type
- article
- Document language
- English
- licence