Chemical gas sensor, surface enhanced Raman scattering and photoelectrics of composite Langmuir-Blodgett films consisting of polypeptide and dye molecules

Li, Na; Wang, Chongling; Li, Lin; Hao, Zongshuo; Wang, Mingli; Jiao, Tifeng

doi:10.1016/j.colsurfa.2023.131067

Cited by 3 publications

(2 citation statements)

References 30 publications

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“…Meanwhile, LB technology has found broad application in creating smart biomaterials by incorporating novel peptide molecules. Composite films comprising palmitoyl pentapeptide-4 (PP4) and phthalocyanine dye molecules were synthesized by Li et al [ 32 ]. The TPPS/PP4 LB films demonstrated exceptional responsiveness to acid-alkali gases, offering valuable insights into the fabrication of self-assembled thin films and their utilization in gas sensors.…”

Section: Application Of Langmuir–blodgett Film Technology In Gas Sensorsmentioning

confidence: 99%

Recent Progress in the Applications of Langmuir–Blodgett Film Technology

Gu,

Li,

Wang

et al. 2024

Nanomaterials

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Langmuir–Blodgett (LB) film technology is an advanced technique for the preparation of ordered molecular ultra-thin films at the molecular level, which transfers a single layer of film from the air/water interface to a solid substrate for the controlled assembly of molecules. LB technology has continually evolved over the past century, revealing its potential applications across diverse fields. In this study, the latest research progress of LB film technology is reviewed, with emphasis on its latest applications in gas sensors, electrochemical devices, and bionic films. Additionally, this review evaluates the strengths and weaknesses of LB technology in the application processes and discusses the promising prospects for future application of LB technology.

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Section: Application Of Langmuir–blodgett Film Technology In Gas Sensorsmentioning

confidence: 99%

Recent Progress in the Applications of Langmuir–Blodgett Film Technology

Gu,

Li,

Wang

et al. 2024

Nanomaterials

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“…The chemical enhancement is attributed to the fact that when molecules are chemically adsorbed on the substrate surface, surface adsorbed atoms and other co-adsorbed species may have certain chemical interactions with molecules. These factors have a direct impact on the electron density distribution of molecules, that is, the change of system polarizability affects its Raman strength [ 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Silver coated PS microsphere array SERS microfluidic chip for pesticide detection

Peng,

Xu,

et al. 2024

Heliyon

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Construction of Amphiphilic Indocyanine–Green–Based Langmuir Film and Drop–Casting Film with Photoelectric Conversion Properties

Chen

et al. 2023

Coatings

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Molecular self–assembly is the automatic formation of functional assemblies of different structural components through weak, reversible, non–covalent interactions on the basis of molecular recognition. Amphiphilic molecules have a natural advantage in self–assembly at the gas/liquid interface. In this work, two amphiphilic molecules with a special molecular structure, indocyanine green (ICG) and a derivative of indocyanine green (CCS), were combined with two dye molecules (tetraphenylporphyrin tetrasulfonic acid hydrate (TPPS) and nickel (II) phthalocyanine–tetrasulfonic acid tetrasodium salt (TsNiPc) for self–assembly through the Langmuir–Blodgett (LB) technique. The nanostructure and assembly behavior in ordered self–assembled films are effectively regulated by inducing dye molecules to form different types of aggregates (H– and J–aggregates). In addition, we prepared composite films containing the same functional components using the conventional drop–casting technique and performed a series of comparative experiments with LB films. The degree of hydrophilicity was found to be related to roughness, with LB composite films being flatter and denser, with the lowest roughness and the best hydrophobicity compared to drop–casting films. Notably, the LB films showed better optoelectronic properties under the same conditions, providing new clues for the application of optoelectronic functional ultrathin film devices.

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Chemical gas sensor, surface enhanced Raman scattering and photoelectrics of composite Langmuir-Blodgett films consisting of polypeptide and dye molecules

Cited by 3 publications

References 30 publications

Recent Progress in the Applications of Langmuir–Blodgett Film Technology

Recent Progress in the Applications of Langmuir–Blodgett Film Technology

Silver coated PS microsphere array SERS microfluidic chip for pesticide detection

Construction of Amphiphilic Indocyanine–Green–Based Langmuir Film and Drop–Casting Film with Photoelectric Conversion Properties

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