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Article: Thioether side chains improve the stability, fluorescence, and metal uptake of a metal-organic framework

TitleThioether side chains improve the stability, fluorescence, and metal uptake of a metal-organic framework
Authors
Keywordsfluorescent sensor
heavy metal removal
metal-organic frameworks
Sulfurated frameworks
thioether donors
Issue Date2011
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/cm
Citation
Chemistry Of Materials, 2011, v. 23 n. 11, p. 2940-2947 How to Cite?
AbstractThis work builds on the recently developed hard-soft approach, as is embodied in the carboxyl-thioether combination, for functionalizing metal-organic frameworks (MOFs), and it aims to further demonstrate its efficacy and generality in connection with the prototypic MOF-5 system [i.e., Zn 4O(bdc) 3, where bdc is 1,4-benzene dicarboxylate]. Specifically, the thioether side chain CH 3SCH 2CH 2S- (methylthioethylenethio, or MSES) is placed at the 2,5- positions of bdc, and the resultant molecule (L) was crystallized with Zn(II) ions into a porous, cubic network [Zn 4O(L) 3] topologically equivalent to MOF-5. Compared with the previously used methylthio (CH 3S-) group, the MSES side chain is more flexible, has more S atoms as the binding sites (per chain), and extends further into the channel region; therefore, this side chain is predisposed for more-efficient binding to soft metal species when installed in a porous MOF matrix. Here, we report the significantly improved properties, with regard to stability to moisture, fluorescence intensity, and capability of metal uptake. For example, activated solid samples of 1 feature long-term stability (more than 3 weeks) in air, have a notable sensing response to nitrobenzene (in the form of fluorescence quenching), and are capable of taking up HgCl 2 from an ethanol solution at a concentration as low as 84 mg/L. © 2011 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/135042
ISSN
2014 Impact Factor: 8.354
2014 SCImago Journal Rankings: 3.274
ISI Accession Number ID
Funding AgencyGrant Number
City University of Hong Kong7002321
Research Grants Council of HKSAR9041322 (CityU 103009)
NSF0087210
Ohio Board of RegentsCAP-491
YSU
Funding Information:

This work is supported by City University of Hong Kong (Project No. 7002321) and the Research Grants Council of HKSAR [Project 9041322 (CityU 103009)]. The single crystal diffractometer was funded by NSF (Grant No. 0087210), the Ohio Board of Regents (Grant No. CAP-491), and by YSU.

References

 

DC FieldValueLanguage
dc.contributor.authorHe, Jen_HK
dc.contributor.authorYee, KKen_HK
dc.contributor.authorXu, Zen_HK
dc.contributor.authorZeller, Men_HK
dc.contributor.authorHunter, ADen_HK
dc.contributor.authorChui, SSYen_HK
dc.contributor.authorChe, CMen_HK
dc.date.accessioned2011-07-27T01:27:04Z-
dc.date.available2011-07-27T01:27:04Z-
dc.date.issued2011en_HK
dc.identifier.citationChemistry Of Materials, 2011, v. 23 n. 11, p. 2940-2947en_HK
dc.identifier.issn0897-4756en_HK
dc.identifier.urihttp://hdl.handle.net/10722/135042-
dc.description.abstractThis work builds on the recently developed hard-soft approach, as is embodied in the carboxyl-thioether combination, for functionalizing metal-organic frameworks (MOFs), and it aims to further demonstrate its efficacy and generality in connection with the prototypic MOF-5 system [i.e., Zn 4O(bdc) 3, where bdc is 1,4-benzene dicarboxylate]. Specifically, the thioether side chain CH 3SCH 2CH 2S- (methylthioethylenethio, or MSES) is placed at the 2,5- positions of bdc, and the resultant molecule (L) was crystallized with Zn(II) ions into a porous, cubic network [Zn 4O(L) 3] topologically equivalent to MOF-5. Compared with the previously used methylthio (CH 3S-) group, the MSES side chain is more flexible, has more S atoms as the binding sites (per chain), and extends further into the channel region; therefore, this side chain is predisposed for more-efficient binding to soft metal species when installed in a porous MOF matrix. Here, we report the significantly improved properties, with regard to stability to moisture, fluorescence intensity, and capability of metal uptake. For example, activated solid samples of 1 feature long-term stability (more than 3 weeks) in air, have a notable sensing response to nitrobenzene (in the form of fluorescence quenching), and are capable of taking up HgCl 2 from an ethanol solution at a concentration as low as 84 mg/L. © 2011 American Chemical Society.en_HK
dc.languageengen_US
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/cmen_HK
dc.relation.ispartofChemistry of Materialsen_HK
dc.subjectfluorescent sensoren_HK
dc.subjectheavy metal removalen_HK
dc.subjectmetal-organic frameworksen_HK
dc.subjectSulfurated frameworksen_HK
dc.subjectthioether donorsen_HK
dc.titleThioether side chains improve the stability, fluorescence, and metal uptake of a metal-organic frameworken_HK
dc.typeArticleen_HK
dc.identifier.emailChui, SSY: chuissy@hkucc.hku.hken_HK
dc.identifier.emailChe, CM: cmche@hku.hken_HK
dc.identifier.authorityChui, SSY=rp00686en_HK
dc.identifier.authorityChe, CM=rp00670en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/cm200557een_HK
dc.identifier.scopuseid_2-s2.0-79958848335en_HK
dc.identifier.hkuros186966en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79958848335&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume23en_HK
dc.identifier.issue11en_HK
dc.identifier.spage2940en_HK
dc.identifier.epage2947en_HK
dc.identifier.isiWOS:000291294100033-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridHe, J=35322587000en_HK
dc.identifier.scopusauthoridYee, KK=42062635000en_HK
dc.identifier.scopusauthoridXu, Z=9843801700en_HK
dc.identifier.scopusauthoridZeller, M=8518298000en_HK
dc.identifier.scopusauthoridHunter, AD=7402779700en_HK
dc.identifier.scopusauthoridChui, SSY=8297453100en_HK
dc.identifier.scopusauthoridChe, CM=7102442791en_HK

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