Molecularly Engineered Fluorescent Magnetic Microrobots for Sensing High-Energy Nitroaromatic Explosives in Highly Acidic Aqueous Environments
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F26%3A0200775" target="_blank" >RIV/00216305:26620/26:0200775 - isvavai.cz</a>
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/epdf/10.1002/smll.202512670?src=getftr&utm_source=clarivate&getft_integrator=clarivate" target="_blank" >https://onlinelibrary.wiley.com/doi/epdf/10.1002/smll.202512670?src=getftr&utm_source=clarivate&getft_integrator=clarivate</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/smll.202512670" target="_blank" >10.1002/smll.202512670</a>
Alternative languages
Result language
angličtina
Original language name
Molecularly Engineered Fluorescent Magnetic Microrobots for Sensing High-Energy Nitroaromatic Explosives in Highly Acidic Aqueous Environments
Original language description
Among various analytical sensing approaches currently in use, fluorescence sensing is known for its high sensitivity, rapid response, and applicability in monitoring a wide range of target molecules. Pairing an appropriate navigation system with a fluorescent molecule that can carry it to inaccessible or hard-to-reach environments can pave the way for remote and selective sensing applications. Herein, we design magnetic nanoparticles embedded with fluorescent material to form magneto-fluorescent, precisely navigable microrobots for sensing high-energy explosive compounds in acidic aqueous systems. Magnetic guidance via Helmholtz coils provides dynamic navigational control to direct the microrobots to specific regions of interest using externally applied magnetic fields. Upon specific interaction with picric acid, the sensing mechanism is triggered via fluorescence quenching ("on-off" switch). Materials characterization demonstrates that this quenching mechanism arises from the hydrogen bonding and charge-transfer interactions between ketenimine-functionalized probes and the hydroxyl group in picric acid, leading to the formation of water-soluble picrate complexes. Testing in microfluidic channels as proof-of-concept further validates the microrobot's ability for selective sensing of target analytes, emphasizing them as smart mobile sensors for environmental monitoring in harsh acidic conditions, confined spaces, hazardous material detection, and applications in the real world where conventional sensors face challenges.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
21000 - Nano-technology
Result continuities
Project
<a href="/en/project/GX25-15484X" target="_blank" >GX25-15484X: Smart micro- and nanorobots for water purification</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2026
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Small
ISSN
1613-6810
e-ISSN
1613-6829
Volume of the periodical
22
Issue of the periodical within the volume
5
Country of publishing house
DE - GERMANY
Number of pages
12
Pages from-to
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UT code for WoS article
001632922100001
EID of the result in the Scopus database
2-s2.0-105024434814