Nonlinear Optical Switching in Regioregular Porphyrin Covalent Organic Frameworks.
covalent organic frameworks
microporous materials
nonlinear optics
porphyrins
regioregular materials
Journal
Angewandte Chemie (International ed. in English)
ISSN: 1521-3773
Titre abrégé: Angew Chem Int Ed Engl
Pays: Germany
ID NLM: 0370543
Informations de publication
Date de publication:
20 May 2019
20 May 2019
Historique:
received:
19
12
2018
revised:
10
03
2019
pubmed:
14
3
2019
medline:
14
3
2019
entrez:
14
3
2019
Statut:
ppublish
Résumé
Covalent organic frameworks (COFs) have garnered immense scientific interest among porous materials because of their structural tunability and diverse properties. However, the response of such materials toward laser-induced nonlinear optical (NLO) applications is hardly understood and demands prompt attention. Three novel regioregular porphyrin (Por)-based porous COFs-Por-COF-HH and its dual metalated congeners Por-COF-ZnCu and Por-COF-ZnNi-have been prepared and present excellent NLO properties. Notably, intensity-dependent NLO switching behavior was observed for these Por-COFs, which is highly desirable for optical switching and optical limiting devices. Moreover, the efficient π-conjugation and charge-transfer transition in ZnCu-Por-COF enabled a high nonlinear absorption coefficient (β=4470 cm/GW) and figure of merit (FOM=σ
Identifiants
pubmed: 30864202
doi: 10.1002/anie.201814412
doi:
Types de publication
Journal Article
Langues
eng
Pagination
6896-6900Subventions
Organisme : H2020 European Research Council
ID : 696656
Informations de copyright
© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.