Silver phthalocyanine thin films carrying gold, palladium and silver nanoparticles for detection of taggants in explosives

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F17%3A43913737" target="_blank" >RIV/60461373:22340/17:43913737 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0040609016306575" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0040609016306575</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.tsf.2016.10.056" target="_blank" >10.1016/j.tsf.2016.10.056</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Silver phthalocyanine thin films carrying gold, palladium and silver nanoparticles for detection of taggants in explosives

Popis výsledku v původním jazyce

Our work deals with thin films of silver phthalocyanine (AgPc) combined with gold, palladium and silver nanoparticles. These films were applied for the indirect detection of 2-nitrotoluene which is used as a taggant in explosives. The films were deposited by an Organic Molecular Evaporation and a DC magnetron sputtering. The growth of metallic nanoparticles was continuously monitored through in-situ resistance measurements to detect the percolation threshold. We varied composition of the nanoparticles, their amount (the sputtered equivalent thickness was in the range from 1 to 50 nm) and also the geometry of sensing layers: geometry i) bottom AgPc + top nanoparticles, geometry ii) top AgPc layer + bottom nanoparticles. The sensors with geometry i) exhibited good recovery capabilities, those with geometry ii) seemed to better preserve phthalocyanine sensing properties. For the best combination, the AgPc(50 nm)/Au(10 nm) sensor, its dc-response rose to the value of 373 for 190 ppm of 2-nitrotoluene. This suggests that 2-nitrotoluene can be detected in the sub-ppm concentrations by these films.

Název v anglickém jazyce

Silver phthalocyanine thin films carrying gold, palladium and silver nanoparticles for detection of taggants in explosives

Popis výsledku anglicky

Our work deals with thin films of silver phthalocyanine (AgPc) combined with gold, palladium and silver nanoparticles. These films were applied for the indirect detection of 2-nitrotoluene which is used as a taggant in explosives. The films were deposited by an Organic Molecular Evaporation and a DC magnetron sputtering. The growth of metallic nanoparticles was continuously monitored through in-situ resistance measurements to detect the percolation threshold. We varied composition of the nanoparticles, their amount (the sputtered equivalent thickness was in the range from 1 to 50 nm) and also the geometry of sensing layers: geometry i) bottom AgPc + top nanoparticles, geometry ii) top AgPc layer + bottom nanoparticles. The sensors with geometry i) exhibited good recovery capabilities, those with geometry ii) seemed to better preserve phthalocyanine sensing properties. For the best combination, the AgPc(50 nm)/Au(10 nm) sensor, its dc-response rose to the value of 373 for 190 ppm of 2-nitrotoluene. This suggests that 2-nitrotoluene can be detected in the sub-ppm concentrations by these films.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21001 - Nano-materials (production and properties)

Projekt

<a href="/cs/project/GA14-10279S" target="_blank" >GA14-10279S: Pokročilé materiály pro fotovoltaiku: substituované ftalocyaninové organokomplexy</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Thin Solid Films

ISSN

0040-6090

e-ISSN

—

Svazek periodika

630

Číslo periodika v rámci svazku

May 2017

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

7

Strana od-do

31-37

Kód UT WoS článku

000401080700005

EID výsledku v databázi Scopus

2-s2.0-85019101208