Construction and self-assembly of beta-cyclodextrin derivative composite Langmuir films: Host-guest reaction and nanostructures

Gao, Yagui; Jiao, Tifeng; Xing, Ronge; Zhang, Lexin; Zhou, Jingxin; Peng, Qiuming

doi:10.1016/j.colsurfa.2017.08.025

Cited by 10 publications

(3 citation statements)

References 63 publications

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“…On the other hand, Langmuir-Blodgett (LB) technique is an effective method for preparing ultra-thin and thickness controlled films at air/water interface, which are well-known to all as most widely used and appealing self-assembled method [26]. Dyes, including methylene blue (MB), Rhodamine B (RhB), and Safranine T (ST), are electrically active organic compounds that can be modified on the electrode surface as vehicles.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of self-assembled carbon nanotubes/dye composite films for sensitive electrochemical determination of Cd(II) ions

Chen¹,

Zhang

et al. 2018

Nanotechnology

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A new type of voltammetric sensor material has been fabricated via a facile self-assembled method. A modified glassy carbon electrode (GCE) by phenylsulfonic groups grafted multi-walled carbon nanotubes (CNT-SOH) with dye molecules via Langmuir-Blodgett (LB) assembling (CNT-SOH/dye-LB/GCE) were prepared for detecting trace levels of cadmium (Cd) ions by square wave anodic stripping voltammetry. The synergy effect between CNT-SOH and dye as well as orderly aggregates in composite LB films contributed to greatly enhancing the determination performance. Under selected conditions, voltammetric response of the fabricated electrochemical sensor in 0.1 M acetate buffer solution containing Bi ions for Cd ions was linear with its concentration in the range 0.1 to 1.2 μM, with a detection limit of 0.08 μM. In addition, the preparation process of self-assembled composite film modified electrodes was simple, non-toxic, exhibiting higher sensitivity and potential application prospects in aspects of heavy metal ions detection and environmental analysis.

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Section: Introductionmentioning

confidence: 99%

Facile synthesis of self-assembled carbon nanotubes/dye composite films for sensitive electrochemical determination of Cd(II) ions

Chen¹,

Zhang

et al. 2018

Nanotechnology

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“…All quartz and glass substrates were coated with a freshly prepared mixed solution (volume ratio NH 4 OH/H 2 O 2 :H 2 O = 1:1:5) for 30 min before experiment and then rinsed in ultrapure water, followed by nitrogen drying. 37 In addition, NF-LDH diffusion solutions (0.8 mg mL −1 ) with different solvent ratios were prepared before the experiment. Methanol and aqueous solution can dissolve NF-LDH in a certain ratio and better adjust the polarity of the solution.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

“…The Langmuir–Blodgett (LB) trough is used to prepare NF-LDH/dye films. All quartz and glass substrates were coated with a freshly prepared mixed solution (volume ratio NH 4 OH/H 2 O 2 :H 2 O = 1:1:5) for 30 min before experiment and then rinsed in ultrapure water, followed by nitrogen drying . In addition, NF-LDH diffusion solutions (0.8 mg mL –1 ) with different solvent ratios were prepared before the experiment.…”

Section: Methodsmentioning

confidence: 99%

Preparation and High Photocurrent Generation Enhancement of Self-Assembled Layered Double Hydroxide-Based Composite Dye Films

Liu

Zhang

et al. 2020

Langmuir

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Understanding photocurrent conversion of layered double hydroxide (LDH) materials will be a key step in the future application of these materials to light-capturing molecular devices. In the present study, ultrathin nickel−iron layered double hydroxide/dye (NF-LDH/dye) Langmuir−Blodgett (LB) semiconductor films were prepared using an LB device and deposited on an indium tin oxide (ITO) substrate as a photoanode. The photoelectric conversion efficiency of the prepared LB semiconductor film materials was tested. A comparative experiment was performed to effectively explore the photoelectric conversion performances of the LB semiconductor film materials. Specifically, the NF-LDH cast film electrode, the dye cast film electrode, and an ultrathin composite LB film electrode were used as typical samples to explore photoelectric conversion performances. The electrochemical workstation was used to study the photocurrent density, linear scanning voltammetry curve, and electrochemical impedance spectroscopy of LB film electrodes with different layers. The results show that the film electrode cast by LDH alone or dye alone produces weak photocurrent. The photoelectric conversion efficiency of the LB film electrode is enhanced due to the different dyes' molecular structures and/or aggregations on the surface of LDH with various morphological patterns. The combined NF-LDH/dye composite LB film photoelectrode can generate a photocurrent that is 2−5 times stronger than the raw material, and the stable use efficiency is more than 92%. Present obtained composite LB films demonstrated a uniform morphology and good photoelectric conversion ability. This work provides a useful reference for the field of LDH semiconductor optoelectronic devices and solar cells.

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Advances in the use of functional composites of β-cyclodextrin in electrochemical sensors

Niu

Xing

et al. 2018

Microchim Acta

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β-Cyclodextrin (β-CD) possess a hydrophobic inner cavity and a hydrophilic exterior surface. They exhibit excellent inclusion properties with the guest molecules that match cavity size, and β-CD-based materials drew widespread attention in electrochemical sensors. The hydroxy groups at the edge of the cavity can form hydrogen bonds and undergo electrostatic and dipole-dipole interactions with other molecules. This review (with 109 refs.) reveals β-CD-based detection mechanisms from the viewpoint of the size/shape-fit concept, and summarizes the current state of multiple electrochemical sensors based on the use of β-CD and functionalized β-CD such as carboxymethyl-β-CD, mono-(6-ethanediamine-6-deoxy)-β-CD, hydroxypropyl-β-CD, thio-β-cyclodextrin, and others. Graphical abstract Schematic diagram of cyclodextrin inclusion complex formation in aqueous solution, represents water molecules, represents guest molecule.

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Construction and self-assembly of beta-cyclodextrin derivative composite Langmuir films: Host-guest reaction and nanostructures

Cited by 10 publications

References 63 publications

Facile synthesis of self-assembled carbon nanotubes/dye composite films for sensitive electrochemical determination of Cd(II) ions

Facile synthesis of self-assembled carbon nanotubes/dye composite films for sensitive electrochemical determination of Cd(II) ions

Preparation and High Photocurrent Generation Enhancement of Self-Assembled Layered Double Hydroxide-Based Composite Dye Films

Advances in the use of functional composites of β-cyclodextrin in electrochemical sensors

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