scholarly journals Perylene Diimide-Based Fluorescent and Colorimetric Sensors for Environmental Detection

Sensors ◽  
2020 ◽  
Vol 20 (3) ◽  
pp. 917 ◽  
Author(s):  
Shuai Chen ◽  
Zexu Xue ◽  
Nan Gao ◽  
Xiaomei Yang ◽  
Ling Zang
Keyword(s):  
Optical Sensors ◽  
Molecular Design ◽  
Environmental Pollutants ◽  
Comprehensive Overview ◽  
Strong Electron ◽  
Environmental Detection ◽  
Optical Stability ◽  
Sensitivity And Selectivity ◽  
Benzene Homologues ◽  
Multi Mode

Perylene tetracarboxylic diimide (PDI) and its derivatives exhibit excellent thermal, chemical and optical stability, strong electron affinity, strong visible-light absorption and unique fluorescence on/off features. The combination of these features makes PDIs ideal molecular frameworks for development in a broad range of sensors for detecting environmental pollutants such as heavy metal ions (e.g., Cu2+, Cd2+, Hg2+, Pd2+, etc.), inorganic anions (e.g., F−, ClO4−, PO4−, etc.), as well as poisonous organic compounds such as nitriles, amines, nitroaromatics, benzene homologues, etc. In this review, we provide a comprehensive overview of the recent advance in research and development of PDI-based fluorescent sensors, as well as related colorimetric and multi-mode sensor systems, for environmental detection in aqueous, organic or mixed solutions. The molecular design of PDIs and structural optimization of the sensor system (regarding both sensitivity and selectivity) in response to varying analytes are discussed in detail. At the end, a perspective summary is provided covering both the key challenges and potential solutions for the future development of PDI-based optical sensors.

Recent Trends in Development of Nanomaterials Based Green Analytical Methods for Environmental Remediation

2020 ◽  
Vol 16 ◽  
Author(s):  
Sidra Amin ◽  
Amber R. Solangi ◽  
Dilawar Hassan ◽  
Nadir Hussain ◽  
Jamil Ahmed ◽  
...  
Keyword(s):  
Optical Sensors ◽  
Environmental Remediation ◽  
Environmental Chemistry ◽  
Limit Of Detection ◽  
Environmental Pollutants ◽  
Toxic Metal ◽  
Electrochemical Analysis ◽  
Good Choice ◽  
Nano Materials ◽  
Limit Of Quantification

Background: In recent years, the occurrence and fate of environmental pollutants has been recognized as one of the emerging issues in environmental chemistry. A survey documented about a wide variety of these pollutants, which are often detected in our environment and these are major cause of shortened life spans and the global warming. These pollutants include toxic metal, pesticides, fertilizers, drugs and dyes released into soil and major water bodies. The presence of these contaminants causes major disturbance in eco-system’s balance. To tackle these issues many technological improvements are made to detect minute contaminations. The latest issue being answered by the scientists is the use of green nano materials as sensors which are economical, instant and give much better results at low concentrations and can be used for the field measurements resulting in no dangerous by-product that could lead to more environmental contamination. Nano materials are known for their wide band gap, enhanced physical and optical properties with option of tuneablity as per need, by optimizing certain parameters. They are proved to be good choice for analytical/optical sensors with high sensitivity. Objective: This review holds information about multiple methods that use green nanomaterials for the analytical assessment of environmental pollutants. UV-Vis spectrophotometry and electrochemical analysis using green and reproducible nanomaterials are the major focus of this review article. To date, there are number of spectrophotometric and electro chemical methods available that have been used for the detection of environmental pollutants such as toxic metals, pesticides and dyes. Conclusion: The use of nanomaterials can drastically change the detection limits due to having large surface area, strong catalytic properties, and tunable possibility. With the use of nano materials, lower than the marked limit of detection and limit of quantification were seen when compared with previously reported work. The used nano-materials could be washed, dried, and reused, which makes the methods more proficient, cost effective and environmentally friendly.

Efficient chemosensors for toxic pollutants based on photoluminescent Zn(II) and Cd(II) metal-organic networks

2021 ◽  
Author(s):  
Luis David Rosales-Vazquez ◽  
Alejandro Dorazco-González ◽  
Victor Sanchez-Mendieta
Keyword(s):  
Optical Sensors ◽  
Three Dimensional ◽  
High Sensitivity ◽  
Environmental Research ◽  
Toxic Pollutants ◽  
Sensitivity And Selectivity ◽  
Metal Organic ◽  
Analytical Tools ◽  
Organic Networks

Optical sensors with high sensitivity and selectivity, as important analytical tools for chemical and environmental research, can be accomplished by straightforward synthesis of luminescent one-, two- and three-dimensional Zn(II) and...

scholarly journals Perylene Imide-Based Optical Chemosensors for Vapor Detection

Chemosensors ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 1
Author(s):  
Miao Zhang ◽  
Jiangfan Shi ◽  
Chenglong Liao ◽  
Qingyun Tian ◽  
Chuanyi Wang ◽  
...  
Keyword(s):  
Molecular Design ◽  
Phase Detection ◽  
Time Reversibility ◽  
Strong Electron ◽  
Vapor Detection ◽  
Multiple Sensors ◽  
Optical Chemosensors ◽  
Potential Applications ◽  
High Fluorescence ◽  
Organic Amines

Perylene imide (PI) molecules and materials have been extensively studied for optical chemical sensors, particularly those based on fluorescence and colorimetric mode, taking advantage of the unique features of PIs such as structure tunability, good thermal, optical and chemical stability, strong electron affinity, strong visible light absorption and high fluorescence quantum yield. PI-based optical chemosensors have now found broad applications in gas phase detection of chemicals, including explosives, biomarkers of some food and diseases (such as organic amines (alkylamines and aromatic amines)), benzene homologs, organic peroxides, phenols and nitroaromatics, etc. In this review, the recent research on PI-based fluorometric and colorimetric sensors, as well as array technology incorporating multiple sensors, is reviewed along with the discussion of potential applications in environment, health and public safety areas. Specifically, we discuss the molecular design and aggregate architecture of PIs in correlation with the corresponding sensor performances (including sensitivity, selectivity, response time, recovery time, reversibility, etc.). We also provide a perspective summary highlighting the great potential for future development of PIs optical chemosensors, especially in the sensor array format that will largely enhance the detection specificity in complexed environments.

Strong electron affinity PDI supramolecules form anion radical for organic pollutants degradation via directly electrophilic attack

2021 ◽  
Author(s):  
Xiaojuan Bai ◽  
Cong Wang ◽  
Xuyu Wang ◽  
Tianqi Jia ◽  
Boxuan Sun ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Electron Affinity ◽  
Anion Radical ◽  
Environmental Pollutants ◽  
Personal Care Products ◽  
Personal Care ◽  
Electrophilic Attack ◽  
Strong Electron

Pharmaceutical and personal care products (PPCPs) are the most common hazardous environmental pollutants. PDIs anion radical is the promising photocatalyst to transform PPCPs into non-toxic CO2 and H2O for clean...

Porous Silicon Nanostructured Materials for Sensing Applications: Molecular Assembling and Electrochemical or Optical Evaluation

2016 ◽  
Vol 1812 ◽  
pp. 77-82
Author(s):  
J. Márquez ◽  
M. De la Cruz-Guzmán ◽  
L.F. Cházaro ◽  
G. Palestino
Keyword(s):  
Porous Silicon ◽  
Optical Sensors ◽  
Detection Threshold ◽  
Environmental Pollutants ◽  
High Sensitivity ◽  
Hybrid Nanostructures ◽  
Specular Reflectance ◽  
Sensing Applications ◽  
Fluorescent Ligands ◽  
Hybrid Devices

ABSTRACTPorous silicon (PSi) combines the potential of miniaturization with a very large surface area. The PSi surface can be chemically modified resulting in a high sensitivity (low detection threshold) device for chemical and biomolecular sensing. In previous work, we have shown that redox proteins and fluorescent ligands can be infiltrated into PSi (PSiMc) structures. The hybrid devices have shown interesting new properties produced by the coupling of the individual properties of PSi nanostructures and the modifiers. In this work, we have obtained a PSiMc/redox protein bioelectrode, which presents a quasi-reversible electrochemical response. This effect was attributed to the semiconducting nature of the PSi substrate and to the functional groups of the crosslinking molecules (MPTS), which together produce a capacitive effect on the device. On the other hand, the chemical modification of PSiMc with fluorescent ligands allowed us to fabricate fluorescent PSi hybrid nanostructures, which were tested for the detection of environmental pollutants such as heavy metals (specifically Hg2+). We found that the selectivity of this optical device depends on the selected recognizing molecule. The captured metal induces the formation of a metallic complex that shows higher fluorescence compared with the sensor device. These results demonstrate the viability of using porous silicon as optical sensors and electrochemical biosensors. The infiltration of fluorescent recognizing molecules and proteins into the PSi matrix were evaluated by specular reflectance, FTIR spectroscopy, fluorescence spectroscopy and cyclic voltammetry.

Ester Substituted Thiophene-Fused Benzothiadiazole as a Strong Electron-Acceptor to Build D-A Red-emitters for Highly Efficient Solution-processed OLEDs

2021 ◽  
Author(s):  
Xiaoxiao Wang ◽  
Cheng Zhong ◽  
Guohua Xie ◽  
Xingguo Chen
Keyword(s):  
Electron Acceptor ◽  
Efficient Solution ◽  
Molecular Design ◽  
Strong Electron ◽  
Solution Processed ◽  
Highly Efficient ◽  
Donor Acceptor ◽  
Rational Molecular Design

Rational molecular design is critical to build high-efficiently red-NIR fluorescent emitters. In this work, a thiophene-fused benzothiadiazole (BTT) unit has been chosen as a strong electron-acceptor to build donor-acceptor (D-A)...

scholarly journals Enhanced on-chip phase measurement by inverse weak value amplification

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Meiting Song ◽  
John Steinmetz ◽  
Yi Zhang ◽  
Juniyali Nauriyal ◽  
Kevin Lyons ◽  
...  
Keyword(s):  
Optical Sensors ◽  
Phase Measurement ◽  
Optical Power ◽  
Weak Value ◽  
Quantum Domain ◽  
Noise Limit ◽  
On Chip ◽  
Multi Mode ◽  
Weak Value Amplification ◽  
Shot Noise Limit

AbstractOptical interferometry plays an essential role in precision metrology such as in gravitational wave detection, gyroscopes, and environmental sensing. Weak value amplification enables reaching the shot-noise-limit of sensitivity, which is difficult for most optical sensors, by amplifying the interferometric signal without amplifying certain technical noises. We implement a generalized form of weak value amplification on an integrated photonic platform with a multi-mode interferometer. Our results pave the way for a more sensitive, robust, and compact platform for measuring phase, which can be adapted to fields such as coherent communications and the quantum domain. In this work, we show a 7 dB signal enhancement in our weak value device over a standard Mach-Zehnder interferometer with equal detected optical power, as well as frequency measurements with 2 kHz sensitivity by adding a ring resonator.

Nucleophilic approach to cyanide sensing by chemosensors

2021 ◽  
Vol 19 ◽  
Author(s):  
Ergin Keleş ◽  
Burcu Aydıner ◽  
Zeynel Seferoğlu
Keyword(s):  
Optical Sensors ◽  
Cyanide Anion ◽  
Plant Seeds ◽  
Different Types ◽  
Recent Developments ◽  
Sensitivity And Selectivity ◽  
Excessive Consumption ◽  
Sample Application ◽  
Cyanide Sensing ◽  
Naked Eye Detection

: Cyanide anion has wide use in industrial areas and high toxic effect on the environment as waste. Moreover, plant seeds contain cyanide which occurs in excessive consumption. Therefore, many studies are carried out to determine cyanide. Especially, optical sensors showing colorimetric and fluorimetric changes have been of considerable interest due to their easy, cheap, and fast responses. This review discusses recent developments in the colorimetric and fluorimetric detection of cyanide by nucleophilic addition to different types of receptors via the chemodosimeter approach. The sensitivity and selectivity of the sensors have been reviewed for changes in absorption and fluorescence, naked-eye detection, real sample application, and detection limits when interacting with cyanide.

Recent Development of Supramolecular Sensors Constructed by Hybridization of Organic Macrocycles with Nanomaterials

2020 ◽  
Vol 24 (3) ◽  
pp. 265-290 ◽  
Author(s):  
Yong-Yi Zhao ◽  
Jian-Mei Yang ◽  
Xian-Yi Jin ◽  
Hang Cong ◽  
Qing-Mei Ge ◽  
...  
Keyword(s):  
Optical Sensors ◽  
Research Field ◽  
Superior Performance ◽  
Macrocyclic Compounds ◽  
Detection Range ◽  
Lower Detection Limit ◽  
Lower Detection ◽  
Sensitivity And Selectivity ◽  
Recognition And Response ◽  
Macrocyclic Molecules

Macrocyclic compounds have attracted tremendous attention for their superior performance in supramolecular recognition, catalysis, and host-guest interaction. With these admirable properties, macrocyclic compounds were used as modifiers for enhancing the sensitivity and selectivity of electrodes and optical sensors. The classic macrocyclic compounds, including crown ethers, cyclodextrins, calixarenes, cucurbiturils, and pillararenes, were employed as receptors for electrochemical and optical sensors to develop new analytical methods with the wilder detection range, lower detection limit, and better tolerance of interference. Macrocyclic molecules functionalized with nanomaterials, the small entities with dimensions in the nanoscale, realized the versatility and diversification of the nano-hybrid materials, which improved the capabilities of recognition and response with the combining characteristics of two components. Herein, this review focused on the development in the research field of hybridization of organic macrocycles with nanoparticles and their applications for chemosensors, aiming at both existing researchers in the field and who would like to enter into the research.

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