Fabrication of BP2T functionalized graphene <i>via</i> non-covalent π–π stacking interactions for enhanced ammonia detection

Li, Hu; Duan, Tianbo; Sher, Omer; Han, Yuanyuan; Papadakis, Raffaello; Grigoriev, Anton; Ahuja, Rajeev; Leifer, Klaus

doi:10.1039/d1ra06879b

Cited by 2 publications

(1 citation statement)

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“…This type of interactions has been a focus of great interest in the field of chemistry, biology and material science [13] . These interactions have been found very efficient in DNA sequencing, [14] controlled drug release, [15] molecular receptors, [16] sensor fabrication, [17] electrochemical energy storage [18] and several other material [19] . In the field of biomedical and biotechnology they have been employed in the drug delivery system since, they do not alter the functional/structural properties of drugs [20] .…”

Section: Introductionmentioning

confidence: 99%

Crystal Structure, Spectroscopic Studies and Supramolecular Chemistry, DFT Based Electronic and Optical Properties of Salts of Methylene Blue with Tetrahedral Anions

Ullah

Xiang

et al. 2023

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The Fe(III), Ni(II) and Zn(II) salts were treated with MB+ to obtain metal complexes MB[FeCl4], (MB)2[NiCl4], MB(ClO4) and to explore the coordination behavior of the organic cation. Crystals were grown by soft grinding and solution techniques. The resultant compounds were fully characterized by UV‐visible spectroscopy, TGA, single crystal and powder XRD. UV‐Visible, Frontier molecular orbital, Density of states, Molecular electrostatic potentials, and band gap were estimated theoretically by DFT. The purity and crystallinity of material was measured with the help of powder X‐ray diffraction analysis while their thermal stability was measured with the help of thermogravimetric analysis. DFT study revealed that the chlorinated metal center helps to stabilize the HOMO and LUMO values which are ultimately responsible for the lower energy gap. Complex (MB)2[NiCl4] has the lowest bandgap 0.48 eV which is due to the presence of one extra MB+ and also due to the electron‐rich nature of Ni(II). The crystal structure of all compounds is stabilized by strong electrostatic, hydrogen bonding, π‐π‐stacking and other short‐interactions. Molecular electrostatic potentials ESP surface shows that chlorinated metal centers are electron rich in nature and more electron density are found in ClO4- ${{ClO}_{4}^{-}}$ center. The supramolecular chemistry of the resultant solids is discussed in detail.

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Section: Introductionmentioning

confidence: 99%

Crystal Structure, Spectroscopic Studies and Supramolecular Chemistry, DFT Based Electronic and Optical Properties of Salts of Methylene Blue with Tetrahedral Anions

Ullah

Xiang

et al. 2023

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Sensor to Electronics Applications of Graphene Oxide through AZO Grafting

et al. 2023

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Graphene is a two-dimensional (2D) material with a single atomic crystal structure of carbon that has the potential to create next-generation devices for photonic, optoelectronic, thermoelectric, sensing, wearable electronics, etc., owing to its excellent electron mobility, large surface-to-volume ratio, adjustable optics, and high mechanical strength. In contrast, owing to their light-induced conformations, fast response, photochemical stability, and surface-relief structures, azobenzene (AZO) polymers have been used as temperature sensors and photo-switchable molecules and are recognized as excellent candidates for a new generation of light-controllable molecular electronics. They can withstand trans-cis isomerization by conducting light irradiation or heating but have poor photon lifetime and energy density and are prone to agglomeration even at mild doping levels, reducing their optical sensitivity. Graphene derivatives, including graphene oxide (GO) and reduced graphene oxide (RGO), are an excellent platform that, combined with AZO-based polymers, could generate a new type of hybrid structure with interesting properties of ordered molecules. AZO derivatives may modify the energy density, optical responsiveness, and photon storage capacity, potentially preventing aggregation and strengthening the AZO complexes. They are potential candidates for sensors, photocatalysts, photodetectors, photocurrent switching, and other optical applications. This review aimed to provide an overview of the recent progress in graphene-related 2D materials (Gr2MS) and AZO polymer AZO-GO/RGO hybrid structures and their synthesis and applications. The review concludes with remarks based on the findings of this study.

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Fabrication of BP2T functionalized graphene via non-covalent π–π stacking interactions for enhanced ammonia detection

Abstract: Non-covalent functionalization of graphene has been achieved by employing π–π stacking interactions, and it is promising for ammonia detection with greatly enhanced sensitivity.

Cited by 2 publications

References 43 publications

Crystal Structure, Spectroscopic Studies and Supramolecular Chemistry, DFT Based Electronic and Optical Properties of Salts of Methylene Blue with Tetrahedral Anions

Crystal Structure, Spectroscopic Studies and Supramolecular Chemistry, DFT Based Electronic and Optical Properties of Salts of Methylene Blue with Tetrahedral Anions

Sensor to Electronics Applications of Graphene Oxide through AZO Grafting

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