Recent Advances in Smart Organic Sensors for Environmental Monitoring Systems

Song, Hyun Woo; Choi, Wonbin; Jeon, Taesu; Oh, Joon Hak

doi:10.1021/acsaelm.2c01315

Cited by 18 publications

(11 citation statements)

References 205 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the area of chemical processes and equipment, smart control refers to the use of intelligent control systems that leverage advanced algorithms, sensors, and automation technologies to enhance the efficiency, safety, and reliability of chemical operations. [96][97][98][99][100][101] These systems are designed to monitor process parameters in real time, make data-driven decisions, and adjust operating conditions dynamically to achieve optimal performance. The concept also incorporates distance control since direct on-site interaction with human operator is not required.…”

Section: Smart Controlmentioning

confidence: 99%

Top 20 Influential AI-Based Technologies in Chemistry

Ananikov

2024

Preprint

View full text Add to dashboard Cite

The beginning and ripening of digital chemistry is analyzed focusing on the role of artificial intelligence (AI) in an expected leap in chemical sciences to bring this area to the next evolutionary level. The analytic description selects and highlights the top 20 AI-based technologies and 7 broader themes that are reshaping the field. It underscores the integration of digital tools such as machine learning, big data, digital twins, the Internet of Things (IoT), robotic platforms, smart control of chemical processes, virtual reality and blockchain, among many others, in enhancing research methods, educational approaches, and industrial practices in chemistry. The significance of this study lies in its focused overview of how these digital innovations foster a more efficient, sustainable, and innovative future in chemical sciences. This article not only illustrates the transformative impact of these technologies but also draws new pathways in chemistry, offering a broad appeal to researchers, educators, and industry professionals to embrace these advancements for addressing contemporary challenges in the field.

show abstract

Section: Smart Controlmentioning

confidence: 99%

Top 20 Influential AI-Based Technologies in Chemistry

Ananikov

2024

Preprint

View full text Add to dashboard Cite

show abstract

“…4,5 Oxygen exists in diverse forms in nature, including the form of dissolved oxygen, 6,7 which is the oxygen exchanged between a solution and the atmosphere or that dissolved in water through chemical reactions. 8,9 It holds significant importance as an indicator in aquaculture. 10−12 Maintaining an appropriate oxygen level is very important to aquatic life; both excessively high and low levels can be very dangerous.…”

Section: Introductionmentioning

confidence: 99%

“…Oxygen is a crucial element for the proper functioning of the human body. − It plays a key role in several reactions in the fields of medicine and chemistry. , Oxygen exists in diverse forms in nature, including the form of dissolved oxygen, , which is the oxygen exchanged between a solution and the atmosphere or that dissolved in water through chemical reactions. , It holds significant importance as an indicator in aquaculture. − Maintaining an appropriate oxygen level is very important to aquatic life; both excessively high and low levels can be very dangerous. For instance, fish may suffocate and die if the dissolved-oxygen level falls below 4 mg/L .…”

Section: Introductionmentioning

confidence: 99%

Facile Fabrication and Analysis of Highly Sensitive PtTFPP/Carbon Black/Polystyrene Oxygen-Sensitive Composite Films for Optical Dissolved-Oxygen Sensor

Lee,

Li,

Cheng

et al. 2024

ACS Appl. Electron. Mater.

View full text Add to dashboard Cite

This research has designed and fabricated an oxygen-sensitive composite film, based on fluorescence quenching by oxygen, which can be applied in optical dissolved-oxygen sensor probes. The composite film is prepared by mixing polystyrene (PS) and indicator dye (platinum tetrakis pentrafluorophenyl porphine, PtTFPP). Tributyl phosphate (TBP) and common black pigment (i.e., carbon black, CB) are then added to enhance the oxygen permeability and specific surface area of the film and to increase its oxygen sensitivity. A nonionic surfactant (i.e., Triton X-100) is used to facilitate the uniform dispersion of carbon black within the PtTFPP/PS composite film, producing a highly oxygen-sensitive film. This research shows that the highest sensitivity (I 0 /I 100 ) is achieved at a weight ratio of 150:1 (PS/PtTFPP), with a linear correlation coefficient (R 2 ) of 0.9955. With the addition of 3 wt % TBP to PS, the sensitivity increases to 16.51, with an R 2 value of 0.9939. The addition of CB to this film increases the sensitivity further to 19.12 (R 2 = 0.9916). The above results show that the addition of TBP and CB can effectively enhance the oxygen sensitivity of the film. This study successfully fabricates an oxygensensitive compound film with high oxygen sensitivity and detection accuracy in a simple and cost-effective manner. The methods used in this study can be used for developing other highly sensitive sensors, which can be used in professional water-quality assessments for commercial purposes.

show abstract

“…In the fields of solar energy and optoelectronics, the efficient harvesting and utilization of energy resources have become paramount concerns. − Organic materials emerge as promising candidates owing to their economic feasibility, structural flexibility, and convenient customization for optoelectronic applications. − Following excitation in organic solids, efficient exciton transport toward the p–n junction for subsequent charge separation is a pivotal factor influencing the performance of optoelectronic devices. To enhance exciton diffusion, extensive studies have been conducted, employing specific strategies such as adjusting the overlap between absorption and emission spectra, manipulating exciton spin properties, and refining supramolecular architectures and intermolecular electronic interactions. − Nevertheless, the formation of trap states remains a challenging obstacle impeding advancements in exciton mobility. , …”

Section: Introductionmentioning

confidence: 99%

Impact of Packing Geometry on Excimer Characteristics and Mobility in Perylene Bisimide Polycrystalline Films

Kang,

Choi,

Ahn

et al. 2024

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

Efficient exciton transport is essential for highperformance optoelectronics. Considerable efforts have been focused on improving the exciton mobility in organic materials. While it is feasible to improve mobility in organic systems by forming well-ordered stacks, the formation of trap states, particularly the lower-lying states referred to as excimers, remains a significant challenge to enhancing mobility. The mobility of excimer excitons intricately depends on the strength of excitonic coupling in terms of Forster-type diffusive exciton transfer processes. Given that the formation and mobility of excimer excitons are highly sensitive to molecular arrangements (packing geometries), conducting comprehensive investigations into the structure−property relationship in organic systems is crucial. In this study, we prepared three types of polycrystalline films of perylene bisimide (PBI) by varying substituents at the imide and bay positions, which allowed us to tailor the properties of excimer excitons and their mobility based on packing geometries and excitonic coupling strengths. By utilizing femtosecond transient absorption spectroscopy, we observed ultrafast excimer formation in the higher coupling regime, while in the lower coupling regime, the transition from Frenkel to excimer excitons occurs with a time constant of 500 fs. Under high pump-fluence, exciton−exciton annihilation processes occur, indicating the diffusion of excimer excitons. Intriguingly, employing a three-dimensional diffusion model, we derived a diffusion constant that is 3000 times greater in the high coupling regime than in the low coupling regime. To investigate the optoelectronic properties in the form of a bulk system, we fabricated n-type organic field effect transistors and obtained 8000 times higher mobility in the high coupling regime. Furthermore, photocurrent measurements enable us to investigate the charge carrier transport by mobile excimer excitons, suggesting a 230-fold improvement in external quantum efficiency with tightly packing PBI molecules compared to the low coupling regime. These findings not only offer valuable insights into optimizing organic materials for optoelectronic devices but also unveil the intriguing potential of exciton migration within excimers.

show abstract

Recent Advances in Smart Organic Sensors for Environmental Monitoring Systems

Cited by 18 publications

References 205 publications

Top 20 Influential AI-Based Technologies in Chemistry

Top 20 Influential AI-Based Technologies in Chemistry

Facile Fabrication and Analysis of Highly Sensitive PtTFPP/Carbon Black/Polystyrene Oxygen-Sensitive Composite Films for Optical Dissolved-Oxygen Sensor

Impact of Packing Geometry on Excimer Characteristics and Mobility in Perylene Bisimide Polycrystalline Films

Contact Info

Product

Resources

About