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241021s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202413629
|2 doi
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|a pubmed24n1631.xml
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|a (DE-627)NLM379157179
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|a (NLM)39428865
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Hamzehpoor, Ehsan
|e verfasserin
|4 aut
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|a Azatriangulene-Based Conductive C═C Linked Covalent Organic Frameworks with Near-Infrared Emission
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 14.12.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2024 The Author(s). Advanced Materials published by Wiley‐VCH GmbH.
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|a Two near-infrared (NIR) emissive π-conjugated covalent organic frameworks (COFs) pTANG1 and pTANG2 are synthesized using Knoevenagel condensation of trioxaazatriangulenetricarbaldehyde (TATANG) with benzene- and biphenyldiacetonitriles, respectively. The morphology of the COFs is affected by the size of TATANG precursor crystals. Donor-acceptor interactions in these COFs result in small bandgaps (≈1.6 eV) and NIR emission (λmax = 789 nm for pTANG1). pTANG1 can absorb up to 9 molecules of water per unit cell, which is accompanied by a marked quenching of the NIR emission, suggesting applications as humidity sensors. p-Doping with magic blue significantly increases the electrical conductivities of the COFs by up to 8 orders of magnitude, with the room temperature conductivity of pTANG1 reaching 0.65 S cm-1, the highest among reported C═C linked COFs. 1H NMR relaxometry, temperature-dependent fluorescence spectroscopy, and DFT calculations reveal that the higher rigidity of the shorter phenylene linker is responsible for the more extended conjugation (red-shifted emission, higher electrical conductivity) of pTANG1 compared to pTANG2
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|a Journal Article
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|a covalent organic frameworks (COF)
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|a near‐infrared luminescence
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|a semiconducting COF
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|a trioxaazatriangulene
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|a Ghamari, Pegah
|e verfasserin
|4 aut
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|a Tao, Yuze
|e verfasserin
|4 aut
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|a Rafique, Muhammad Ghufran
|e verfasserin
|4 aut
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|a Zhang, Zhenzhe
|e verfasserin
|4 aut
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|a Salehi, Mahdi
|e verfasserin
|4 aut
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|a Stein, Robin S
|e verfasserin
|4 aut
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|a Ramos-Sanchez, Jorge
|e verfasserin
|4 aut
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|a Laramée, Arnaud W
|e verfasserin
|4 aut
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|a Cosa, Gonzalo
|e verfasserin
|4 aut
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|a Pellerin, Christian
|e verfasserin
|4 aut
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|a Seifitokaldani, Ali
|e verfasserin
|4 aut
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|a Khaliullin, Rustam Z
|e verfasserin
|4 aut
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|a Perepichka, Dmytro F
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 36(2024), 50 vom: 15. Dez., Seite e2413629
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:36
|g year:2024
|g number:50
|g day:15
|g month:12
|g pages:e2413629
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|u http://dx.doi.org/10.1002/adma.202413629
|3 Volltext
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