I D
× COMMENTARY
Digitalization Game ChangersGame Changers
The technologies associated with the Industrial Internet of Things, and…
COVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chemical Engineering MagazineChementator Briefs
ANG fueling station Ingevity (North Charleston, S.C.; www.ingevity.com) has completed…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILESOLIDS PROCESSINGEQUIPMENT & SERVICESFOCUSNEW PRODUCTS + Show More SHOW PREVIEWS

Comment Automation & Control

Quantum clusters serve as ultra-sensitive detectors

By Paul Grad |

Detection of extremely small quantities of dangerous or hazardous substances is important in many areas, including national security, safety of public utilities and radiation prevention. Several analytical methods have been developed using structural, functional and electronic properties of nanomaterials. In particular, noble-metal quantum clusters (QCs), a family of nanomolecules exhibiting intense luminescence, are highly sensitive and selective for specific analytes. Anchoring such QCs on small particles (100 nm to a few micrometers in diameter) leads to surface-enhancement of their luminescence, and may create a new platform for ultrasensitive detection — especially when combined with the use of optical microscopy. Now researchers from the Dept. of Chemistry, Indian Institute of Technology Madras (www.iitm.ac.in), led by professor Thalappil Pradeep, have developed a simple and reliable strategy for the selective detection of 2,4,6-trinitrotoluene (TNT) and Hg2+ ions at the sub-zeptomole level (zmol; less than 10–21 moles) in solution. Their method involves anchoring silver clusters, which are comprised of 15 atoms and embedded in bovine serum albumin (BSA), onto silica-coated gold “mesoflowers” (MFs), denoted…
Related Content
Understanding the Digital Twin
Clarity about the requirements for digital twin technology is essential for any organization’s digital transformation As manufacturers in the chemical…

Mettler Toledo

Tunable Diode Laser Spectroscopy in Critical Applications

Accurate and continuous O2 determination plays a pivotal role in achieving safety and process reliability in a wide range of manufacturing processes. Harsh process conditions and maintenance requirements of sampling and conditioning systems can present…

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
Reduce Explosion Risk in 2 Seconds with In Situ Oxygen Analysis
Tunable Diode Laser Spectroscopy in Critical Applications
Non-Contacting Gas Sensors Minimize the Risk of Corrosion to Plant Equipment.
5 ways to Optimize Production of Polymers and Intermediate Petrochemicals
7 Ways to Achieve Process Safety in Chemical Production

View More

Live chat by BoldChat