Defective GaAs nanoribbon–based biosensor for lung cancer biomarkers: a DFT study

Tarun, Tarun; Singh, Paramjot; Kaur, Hardeep; Walia, Gurleen Kaur; Randhawa, Deep Kamal Kaur; Choudhary, B.C.

doi:10.1007/s00894-021-04889-9

Cited by 11 publications

(6 citation statements)

References 36 publications

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“…The former mechanism is known as chemisorption whereas the latter one is known as physisorption. The chemisorption type of bonding results in distortion of the geometry of substrate material and hence such sensors can be used as a one-time sensor [32]. Figure 4 shows the most favorable positions of CO gas on pristine gCN and transition metals doped gCN monolayer after optimization.…”

Section: Resultsmentioning

confidence: 99%

DFT based study of transition metals (Au,Ag,Pd& Pt) doped graphitic carbon nitride (gCN) monolayer as a CO gas sensor

et al. 2022

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In the present study, we explored the sensing behavior of pristine gCN and transition metal (Au, Ag, Pd and Pt) doped gCN monolayer for CO gas molecule using DFT calculations. Structural and electronic properties such as adsorption energy, band structure and density of states (DOS) have been investigated. An increase of 17.03%, 15.08%, 2.24% and 4.99% is observed for Au, Ag, Pd and Pt doped gCN as compared to pristine gCN towards CO gases. Moreover the band gap also decreases considerably after doping transition metals in it which futher reduces after introduction of CO gas. DOS value also increases. The study revealed that the sensing performance of gCN is enhanced by doping the pristine form with the transition metals (Au, Ag and Pt) and hence doped gCN can be a favorable material for CO gas sensing.

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Section: Resultsmentioning

confidence: 99%

DFT based study of transition metals (Au,Ag,Pd& Pt) doped graphitic carbon nitride (gCN) monolayer as a CO gas sensor

et al. 2022

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“…[35] Moreover, it was considered as an important biomarker for lung cancer. [36,37] Therefore, the sensing performance of CB-PMI-based films (The film was prepared by directly dropping the compound CB-PMI solution in dichloromethane (1 × 10 −3 mol L −1 ) onto the surface of a circular glass plate with a diameter of 1 cm) toward aniline vapor especially in a high humidity condition (≈100% relative humidity (RH)) was evaluated using a homemade sensing platform (Figure 2c). All measurements were operated by five times to guarantee the data reliability.…”

Section: Sensing Performance Of the Fluorescence Filmmentioning

confidence: 99%

A Portable Fluorescence Sensor with Improved Performance for Aniline Monitoring

Gao

Huang

Fang

et al. 2022

Adv Materials Inter

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Among them, fluorescent sensors have attracted most attention of scientists due to their outstanding advantages, such as high sensitivity, low cost, excellent selectivity, ease of sensor preparation, etc. [4][5][6][7][8] In the sensing process, the first excited electronic state of a luminogen presents high sensibility to surrounding microenvironments including temperature, pressure, relative humidity (RH), and solvent polarity, thus the luminogens are of great significance. [9][10][11][12][13][14] Rylene diimides (RDIs), as one of the most important families of dye molecules, have been extensively studied due to their electron-accepting capacity and conducting properties. [15,16] There are various classes of RDIs, such as pyromellitic diimide (PMI), [17] 1,4,5,8-naphthalenediimide (NDI), [18] pyrene diimide (PYI), [19] perylene tetracarboxylic diimide (PDI), [20] and other larger diimides. [21] Among them, PMIs with an aromatic ring in the center and the tetracarboxylic diimides on the sides of the ring have drawn much attention. [22] PMI derivatives could be easily synthesized through a single-step reaction of the pyromellitic dianhydride and the amines, which facilitates the large-scale preparation owing to the high conversion yield and ease of purification procedures. [23] Nevertheless, However, due to the low fluorescence quantum yield and poor photostability of PMI derivatives, much fewer attempts have been made to fabricate fluorescence sensors based on PMI derivatives compared with NDI and PDI derivatives. Thus, it is still challenging to design and synthesize PMI-based luminogens that exhibit excellent photophysical characteristics, such as high luminescence, photostability, and high response specificity, for their applications in fluorescent sensors.In this work, we design and synthesize o-carborane modified pyromellitic diimide derivative (CB-PMI) fluorescent materials with enhanced amine-response, which offers the possibility for real-time and visual detection of lung cancer. A representative molecule CB-PMI consists of a PMI core, two phenyl rings (π-bridge), and two o-carborane units (Scheme 1). The o-carborane moieties with 3D topology are introduced to enhance the photostability and modulate the molecular energy gap of the PMI derivative. [24][25][26] Photophysical properties of as-synthesized CB-PMI both in the solution and solid states were carefully investigated. Subsequently, the sensing performance of CB-PMI Aniline is an important biomarker in human exhaled breath for lung cancer, thus aniline sensing is of paramount importance. However, highly sensitive and selective detection of aniline in high moisture environment of exhaled breath is still challenging. In this work, a new fluorescence sensor for aniline with ultrahigh sensitivity is constructed. The o-carborane modified pyromellitic diimide derivative (CB-PMI) is designed and prepared as the sensitive layer for the fluorescence sensor. As-prepared sensing films exhibit a highly improved response toward aniline vapor. The good sensing per...

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“…Armchair GaAs nanoribbons, including both pristine and defect-induced ones, have the capability to detect VOCs of lung cancer. 25 Furthermore, using germanane has been found to be an effective means for verifying biomarkers of liver cirrhosis. 26 The BC 6 N material decorated with Pd exhibits notable sensitivity and selectivity towards NO x gas molecules, including a rapid recovery time.…”

Section: Introductionmentioning

confidence: 99%

Interaction of the III-As monolayer with SARS-CoV-2 biomarkers: implications for biosensor development

Saha,

Sajib,

Alam

2024

Phys. Chem. Chem. Phys.

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Defective GaAs nanoribbon–based biosensor for lung cancer biomarkers: a DFT study

Cited by 11 publications

References 36 publications

DFT based study of transition metals (Au,Ag,Pd& Pt) doped graphitic carbon nitride (gCN) monolayer as a CO gas sensor

DFT based study of transition metals (Au,Ag,Pd& Pt) doped graphitic carbon nitride (gCN) monolayer as a CO gas sensor

A Portable Fluorescence Sensor with Improved Performance for Aniline Monitoring

Interaction of the III-As monolayer with SARS-CoV-2 biomarkers: implications for biosensor development

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