Smart Supramolecular Sensing with Cucurbit[n]urils: Probing Hydrogen Bonding with SERS


Change log
Authors
de Nijs, B 
Szabo, I 
Barrow, SJB 
Benz, F 
Abstract

Rigid gap nano-aggregates of Au nanoparticles formed using cucurbit[n]uril (CB[n]) molecules are used to investigate competitive binding of ethanol and methanol in an aqueous environment. We show it is possible to detect as little as 0.1% methanol in water and a ten times higher affinity to methanol over ethanol, making this a useful technology for quality control in alcohol production. We demonstrate strong interaction effects in the SERS peaks, which we demonstrate are likely from hydrogen bonding of water complexes in the vicinity of the CB[n]s.

Description
Keywords
0306 Physical Chemistry (incl. Structural), Substance Abuse, Bioengineering, Alcoholism, Alcohol Use and Health, Nanotechnology
Journal Title
Faraday Discussions
Conference Name
Journal ISSN
1359-6640
1364-5498
Volume Title
Publisher
Royal Society of Chemistry
Sponsorship
Engineering and Physical Sciences Research Council (EP/K028510/1)
Engineering and Physical Sciences Research Council (EP/L027151/1)
Engineering and Physical Sciences Research Council (EP/L015978/1)
European Commission (658360)
European Commission Horizon 2020 (H2020) Marie Sk?odowska-Curie actions (702005)
European Research Council (320503)
EPSRC (1352498)
Leverhulme Trust (RP2013-SL-008)
Engineering and Physical Sciences Research Council (EP/G060649/1)
Engineering and Physical Sciences Research Council (EP/H007024/1)
We acknowledge financial support from the UK’s Engineering and Physical Sciences Research Council (grants EP/L027151/1, EP/K028510/1, EP/L015978/1, EP/N020669/1) and the European Research Council (grants LINASS 320503, MSCA-IF-2015-EF SPARCLEs 7020005 and MSCA-IF-2014-EF NANOSPHERE, 658360). RC acknowledges support from the Dr. Manmohan Singh scholarship from St. John’s College. FB acknowledges support from the Winton Programme for the Physics of Sustainability. CC acknowledges support from the UK National Physical Laboratories. GW thanks the Leverhulme Trust (Natural material innovation for sustainable living) for the support.