Facile Strategy for Modulating the Nanoporous Structure of Ultrathin π-Conjugated Polymer Films for High-Performance Gas Sensors

ACS Sensors ◽  
2021 ◽  
Author(s):  
Vinh Van Tran ◽  
Gwanghoon Jeong ◽  
Keun Seong Kim ◽  
Jeongho Kim ◽  
Hong-Ryun Jung ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Polymer Films ◽  
Conjugated Polymer ◽  
High Performance ◽  
Nanoporous Structure

Electrical and morphological characterisation of new π-conjugated polymer films as gas sensors

1998 ◽  
Vol 5 (3-4) ◽  
pp. 217-221 ◽  
Author(s):  
P. Altamura ◽  
A. Bearzotti ◽  
A. D'Amico ◽  
V. Foglietti ◽  
I. Fratoddi ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Polymer Films ◽  
Conjugated Polymer ◽  
Morphological Characterisation

scholarly journals Uniaxial Alignment of Conjugated Polymer Films for High-Performance Organic Field-Effect Transistors

2018 ◽  
Vol 30 (20) ◽  
pp. 1705463 ◽  
Author(s):  
Dongyoon Khim ◽  
Alessandro Luzio ◽  
Giorgio Ernesto Bonacchini ◽  
Giuseppina Pace ◽  
Mi-Jung Lee ◽  
...  
Keyword(s):  
Polymer Films ◽  
Conjugated Polymer ◽  
Field Effect ◽  
High Performance ◽  
Field Effect Transistors ◽  
Organic Field Effect Transistors

Scanning-tunneling spectroscopy on conjugated polymer films

2003 ◽  
Vol 771 ◽  
Author(s):  
M. Kemerink ◽  
S.F. Alvarado ◽  
P.M. Koenraad ◽  
R.A.J. Janssen ◽  
H.W.M. Salemink ◽  
...  
Keyword(s):  
Polymer Films ◽  
Conjugated Polymer ◽  
Three Dimensional ◽  
Field Enhancement ◽  
Direct Consequence ◽  
Scanning Tunneling Spectroscopy ◽  
Tunneling Spectroscopy ◽  
Band Alignment ◽  
Scanning Tunneling ◽  
Order Of Magnitude

AbstractScanning-tunneling spectroscopy experiments have been performed on conjugated polymer films and have been compared to a three-dimensional numerical model for charge injection and transport. It is found that field enhancement near the tip apex leads to significant changes in the injected current, which can amount to more than an order of magnitude, and can even change the polarity of the dominant charge carrier. As a direct consequence, the single-particle band gap and band alignment of the organic material can be directly obtained from tip height-voltage (z-V) curves, provided that the tip has a sufficiently sharp apex.

Endgroup and Sidechain Functionalization of Surface-Initiated ROMP Thin Films: Progress Towards ROMP-Based Molecular Wires

2018 ◽  
Author(s):  
Nicholas Marshall
Keyword(s):  
Thin Films ◽  
Contact Angle ◽  
Cyclic Voltammetry ◽  
Polymer Films ◽  
Conjugated Polymer ◽  
Ring Opening ◽  
Molecular Wires ◽  
Metathesis Polymerization ◽  
Cross Metathesis ◽  
Active Ester

A set of experiments in surface-initiated ring-opening metathesis polymerization, including end-functionalization of growing brushes and contact angle/cyclic voltammetry measurements. We report preparation and CV of two different conjugated polymer films, and several endgroup and sidechain functionalization experiments using cross-metathesis and active ester substitution.<br>

scholarly journals Optimization of a Low-Power Chemoresistive Gas Sensor: Predictive Thermal Modelling and Mechanical Failure Analysis

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 783 ◽  
Author(s):  
Andrea Gaiardo ◽  
David Novel ◽  
Elia Scattolo ◽  
Michele Crivellari ◽  
Antonino Picciotto ◽  
...  
Keyword(s):  
Low Power ◽  
Failure Analysis ◽  
Gas Sensors ◽  
High Performance ◽  
Gas Sensing ◽  
Mechanical Failure ◽  
Sensing Applications ◽  
Theoretical Approaches ◽  
Sensing Material ◽  
Silicon Bulk

The substrate plays a key role in chemoresistive gas sensors. It acts as mechanical support for the sensing material, hosts the heating element and, also, aids the sensing material in signal transduction. In recent years, a significant improvement in the substrate production process has been achieved, thanks to the advances in micro- and nanofabrication for micro-electro-mechanical system (MEMS) technologies. In addition, the use of innovative materials and smaller low-power consumption silicon microheaters led to the development of high-performance gas sensors. Various heater layouts were investigated to optimize the temperature distribution on the membrane, and a suspended membrane configuration was exploited to avoid heat loss by conduction through the silicon bulk. However, there is a lack of comprehensive studies focused on predictive models for the optimization of the thermal and mechanical properties of a microheater. In this work, three microheater layouts in three membrane sizes were developed using the microfabrication process. The performance of these devices was evaluated to predict their thermal and mechanical behaviors by using both experimental and theoretical approaches. Finally, a statistical method was employed to cross-correlate the thermal predictive model and the mechanical failure analysis, aiming at microheater design optimization for gas-sensing applications.

Balance cathode-active and anode-active groups in one conjugated polymer towards high-performance all-organic lithium-ion batteries

Nano Energy ◽  
2021 ◽  
Vol 86 ◽  
pp. 106055
Author(s):  
Yang Zhao ◽  
Manman Wu ◽  
Hongbin Chen ◽  
Jie Zhu ◽  
Jie Liu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Conjugated Polymer ◽  
High Performance ◽  
Lithium Ion
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