A carbazole–fluorene molecular hybrid for quantitative detection of TNT using a combined fluorescence and quartz crystal microbalance method

2014 ◽  
Vol 16 (35) ◽  
pp. 18896-18901 ◽  
Author(s):  
Kalathil K. Kartha ◽  
Anjamkudy Sandeep ◽  
Vijayakumar C. Nair ◽  
Masayuki Takeuchi ◽  
Ayyappanpillai Ajayaghosh
Keyword(s):  
Quartz Crystal Microbalance ◽  
Quartz Crystal ◽  
Quantitative Detection ◽  
Self Assembled

Self-assembled fluorescent rods and nanoparticles prepared from a carbazole–fluorene molecular hybrid have been used for the sensing of TNT.

The Structure of Layer-by-Layer Self-Assembled Glucose Oxidase and Os(Bpy)2ClPyCH2NH−Poly(allylamine) Multilayers:  Ellipsometric and Quartz Crystal Microbalance Studies

Langmuir ◽  
2002 ◽  
Vol 18 (10) ◽  
pp. 4020-4029 ◽  
Author(s):  
Erica S. Forzani ◽  
Marcelo Otero ◽  
Manuel A. Pérez ◽  
Manuel López Teijelo ◽  
Ernesto J. Calvo
Keyword(s):  
Glucose Oxidase ◽  
Quartz Crystal Microbalance ◽  
Quartz Crystal ◽  
Layer By Layer ◽  
Self Assembled

“Vanishing mass” in the Sauerbrey world: quartz crystal microbalance study of self-assembled monolayers based on a tripod-branched structure with tuneable molecular flexibility

The Analyst ◽  
2020 ◽  
Vol 145 (2) ◽  
pp. 656-666 ◽  
Author(s):  
Sergii Kravchenko ◽  
Boris Snopok
Keyword(s):  
Quartz Crystal Microbalance ◽  
Quartz Crystal ◽  
Self Assembled Monolayers ◽  
Sensitive Layer ◽  
Spatial Organisation ◽  
Molecular Flexibility ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
Branched Structure

Complex loadings that appear on a surface with flexible spatial organisation can reveal anti-Sauerbrey behaviour due to their variable interfacial architecture even for an ultrathin monomolecular sensitive layer.

Charge Transfer Property of Self-Assembled Viologen Derivative by Electrochemical Quartz Crystal Microbalance Response

2006 ◽  
Vol 6 (11) ◽  
pp. 3657-3660 ◽  
Author(s):  
Dong-Yun Lee ◽  
A. K. M. Kafi ◽  
Sang-Hyun Park ◽  
Young-Soo Kwon
Keyword(s):  
Charge Transfer ◽  
Quartz Crystal Microbalance ◽  
Quartz Crystal ◽  
Modified Electrodes ◽  
Electrochemical Quartz Crystal Microbalance ◽  
Frequency Change ◽  
Self Assembled Monolayer ◽  
Transfer Property ◽  
Redox Peak ◽  
Self Assembled

Viologen modified electrodes have been extensively investigated with quartz crystal microbalance (QCM), which has been known as a nano-gram order mass detector, because of their highly reversible electrochemical properties, especially the first reduction-oxidation cycle of V2+ ↔ V•+. The purpose of this work was to study the charge transfer characteristics of self-assembled monolayer (SAM) by changing electrolyte solutions where the cations and anions are different. The redox peak currents were nearly equal charges during redox processes and showed an excellent linear interrelation between the scan rates and second redox peak currents. The charge transfer of self-assembled viologen monolayer was determined by the mass change during the cyclic voltammetry (CV). The total frequency change was about 17.8 Hz, 19.6 Hz, 9.5 Hz, and 8.4 Hz. From this data, we could know the transferred mass was about 19.0 ng, 20.9 ng, 10.2 ng, and 9.0 ng. Finally, the electrochemical quartz crystal microbalance (EQCM) has been employed to monitor the electrochemically induced adsorption of self-assembled monolayer.

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