Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Drug Sensing by a Synthetic Receptor

17.06.2014

Nanomechanical detection of methamphetamines and designer drugs

The widespread use of methamphetamines and related designer drugs is a major challenge for our society, with significant impact on health and social security.


In the journal Angewandte Chemie, Italian researchers have now introduced a new method of detection that allows the entire class of methamphetamine drugs to be detected in water. A probe equipped with synthetic receptor molecules responds to a grouping of atoms that is present in all methamphetamines. The chemical variations of the different designer drugs have no effect.

A large variety of analytical methods for the detection of methamphetamines have been developed, most of which are slow to yield results or require complicated operations such as labor-intensive sample preparation. The identification of designer drugs presents a further challenge.

... more about:
»Drug »Industrial »cantilever »drugs »receptor »substances

These compounds are based on an existing drug whose chemical structure has been slightly altered. Although the effect of the drug is not changed by these modifications, they do cause serious problems for current detection methods, which are optimized for the identification of specific substances and usually cannot recognize related drugs with a different structure. The demand for a sensitive, selective method for the rapid detection of methamphetamines and designer drugs in the field is correspondingly high.

Scientists from the Universities of Parma, Brescia, and Catania have now successfully met this challenge. Their new method is based on molecular recognition and a nanomechanical detector. The team led by Paolo Bergese and Enrico Dalcanale grafted concave molecules called cavitands to a cantilever made of silicon.

Such cantilevers are used as probes for atomic force microscopes. An array of such grafted cantilevers is used to probe the surface of an aqueous sample. If a cavitand comes into contact with a methamphetamine molecule, the molecule is bound. This molecular recognition is transformed into a mechanical response, which is converted into a deflection of the cantilever.

The cavitands were designed so that a single molecule reliably “recognizes” the methylamino group common to all methamphetamine-based drugs by way of a synergistic set of weak interactions. The chemical variations inherent in designer drugs do not interfere with the recognition by the synthetic receptor.

Other substances typically mixed with the drug, usually glucose or lactose, do not disturb the detection either. The researchers were able to demonstrate the effectiveness of their technique with a variety of methamphetamine-based substances as well as real samples from the street.

About the Author

Dr Enrico Dalcanale is Associate Professor of Industrial Chemistry at University of Parma and Scientific Director of the functional materials section of INSTM (Italian Interuniversity Consortium of Materials Science and Technology, www.instm.it). His expertise is supramolecular chemistry applied to materials science, with main focus on sensing and responsive polymeric materials.

Author: Enrico Dalcanale, Università degli Studi di Parma (Italy), http://www.dalcanalegroup.it/enricos-cv/

Title: Cavitand-Grafted Silicon Microcantilevers as a Universal Probe for Illicit and Designer Drugs in Water

Angewandte Chemie International Edition, Permalink to the article: http://dx.doi.org/10.1002/anie.201404774

Enrico Dalcanale | Angewandte Chemie

Further reports about: Drug Industrial cantilever drugs receptor substances

More articles from Life Sciences:

nachricht Genetic Regulation of the Thymus Function Identified
23.08.2016 | Universität Basel

nachricht Sun protection for plants - Plant substances can protect plants against harmful UV radiation
22.08.2016 | Max-Planck-Institut für Molekulare Pflanzenphysiologie

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Streamlining accelerated computing for industry

PyFR code combines high accuracy with flexibility to resolve unsteady turbulence problems

Scientists and engineers striving to create the next machine-age marvel--whether it be a more aerodynamic rocket, a faster race car, or a higher-efficiency jet...

Im Focus: X-ray optics on a chip

Waveguides are widely used for filtering, confining, guiding, coupling or splitting beams of visible light. However, creating waveguides that could do the same for X-rays has posed tremendous challenges in fabrication, so they are still only in an early stage of development.

In the latest issue of Acta Crystallographica Section A: Foundations and Advances , Sarah Hoffmann-Urlaub and Tim Salditt report the fabrication and testing of...

Im Focus: Piggyback battery for microchips: TU Graz researchers develop new battery concept

Electrochemists at TU Graz have managed to use monocrystalline semiconductor silicon as an active storage electrode in lithium batteries. This enables an integrated power supply to be made for microchips with a rechargeable battery.

Small electrical gadgets, such as mobile phones, tablets or notebooks, are indispensable accompaniments of everyday life. Integrated circuits in the interiors...

Im Focus: UCI physicists confirm possible discovery of fifth force of nature

Light particle could be key to understanding dark matter in universe

Recent findings indicating the possible discovery of a previously unknown subatomic particle may be evidence of a fifth fundamental force of nature, according...

Im Focus: Wi-fi from lasers

White light from lasers demonstrates data speeds of up to 2 GB/s

A nanocrystalline material that rapidly makes white light out of blue light has been developed by KAUST researchers.

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

New Ideas for the Shipping Industry

24.08.2016 | Event News

A week of excellence: 22 of the world’s best computer scientists and mathematicians in Heidelberg

12.08.2016 | Event News

Towards the connected, automated and electrified automobiles: AMAA conference in Brussels

02.08.2016 | Event News

 
Latest News

New Ideas for the Shipping Industry

24.08.2016 | Event News

Lehigh engineer discovers a high-speed nano-avalanche

24.08.2016 | Physics and Astronomy

Streamlining accelerated computing for industry

24.08.2016 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>