研究目的
Proposing a new method for producing stable films used in sensors based on the layer-by-layer deposition of poly(o-ethoxyaniline) and phenol-formaldehyde (POEA/PF) followed by a thermal treatment to promote film crosslinking.
研究成果
The study successfully developed a method for producing stable polymeric cross-linked ultrathin films for sensor applications. The crosslinking process using PF resin resulted in films with enhanced stability, suitable for applications requiring long-term durability. However, the trade-off between stability and sensitivity suggests the need for further optimization to balance these properties.
研究不足
The study noted a decrease in sensor sensitivity with crosslinking, indicating a trade-off between stability and sensitivity. The method's applicability may be limited by the specific requirements of sensor applications where high sensitivity is crucial.
1：Experimental Design and Method Selection:
The study involved the synthesis of poly(o-ethoxyaniline) doped with camphorsulfonic acid (POEA (CSA)) by interfacial polymerization, followed by the preparation and crosslinking of ultrathin films using phenol-formaldehyde (PF) resin. The crosslinking process was characterized by FTIR, UV-Vis, AFM, and desorption studies. Sensor analyses were conducted to evaluate the cross-linked sensor signal.
2：Sample Selection and Data Sources:
The samples included POEA (CSA) synthesized by interfacial polymerization and PF resin. Data were acquired through spectroscopic analyses, microscopy, and sensor measurements.
3：List of Experimental Equipment and Materials:
Equipment included a Fourier transform infrared spectrometer (Perkin-Elmer 1000), UV-Vis spectrophotometer (Shimadzu UV 1601 PC), atomic force microscope (Topometrix Discoverer TMX 2010), and a frequency response analyzer (Solartron 1260). Materials included o-ethoxyaniline, 1,2 dichloroethane, ammonium persulfate, camphorsulfonic acid, phenol-formaldehyde resin, and optical glass substrates.
4：0). Materials included o-ethoxyaniline, 1,2 dichloroethane, ammonium persulfate, camphorsulfonic acid, phenol-formaldehyde resin, and optical glass substrates.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The procedure involved the synthesis of POEA (CSA), preparation of PF resin solutions, deposition of ultrathin films by layer-by-layer assembly, thermal curing of films, and characterization of the films and sensors.
5：Data Analysis Methods:
Data were analyzed using spectroscopic techniques, microscopy for morphological analysis, and sensor signal evaluation for sensitivity and stability.
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