A Zn-MOF constructed from electron-rich pi-conjugated ligands with an interpenetrated graphene-like net as an efficient nitroaromatic sensor
2016 (English)In: RSC Advances, ISSN 2046-2069, E-ISSN 2046-2069, Vol. 6, no 51, 45475-45481 p.Article in journal (Refereed) PublishedText
A novel zinc-based luminescent metal-organic framework (Zn-MOF) has been successfully constructed based on a designed flexible and electron-rich N-involved linker (HL = 4-(bis(4-(pyridin-4-yl) phenyl) amino) benzoic acid). The framework of this Zn-MOF exhibits a 2-fold interpenetrated network which is composed of (3,3)-c sheets. The Zn-MOF has a strong solid state emission at 512 nm. The luminescence signal of the Zn-MOF can be quenched efficiently by trace amounts of electron-deficient nitroaromatics, especially 2,4,6-trinitrophenol (TNP). The quenching constant (K-sv) for TNP is 2.11 x 10(4) M-1, indicating that this framework can be employed as an excellent chemical sensor for identifying and quantifying TNP. This work highlights a strategy for designing a N-involved p-electron-rich enhanced ligand with nucleophilic properties for MOF-based materials as sensors. It also paves the way toward exploring other more efficient MOF materials as sensors for determining electron-deficient nitroaromatics.
Place, publisher, year, edition, pages
Royal Society of Chemistry, 2016. Vol. 6, no 51, 45475-45481 p.
IdentifiersURN: urn:nbn:se:kth:diva-188464DOI: 10.1039/c6ra00524aISI: 000376120100060ScopusID: 2-s2.0-84969981417OAI: oai:DiVA.org:kth-188464DiVA: diva2:936090
FunderVINNOVASwedish Research Council
QC 201606132016-06-132016-06-102016-06-13Bibliographically approved