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Todor-Boer O, Farcău C, Botiz I. Large Enhancement of Photoluminescence Obtained in Thin Polyfluorene Films of Optimized Microstructure. Polymers (Basel) 2024; 16:2278. [PMID: 39204498 PMCID: PMC11359287 DOI: 10.3390/polym16162278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2024] [Revised: 08/07/2024] [Accepted: 08/09/2024] [Indexed: 09/04/2024] Open
Abstract
There is a clearly demonstrated relationship between the microstructure, processing and resulting optoelectronic properties of conjugated polymers. Here, we exploited this relationship by exposing polyfluorene thin films to various solvent vapors via confined-solvent vapor annealing to optimize their microstructure, with the final goal being to enhance their emission properties. Our results have demonstrated enlargements in photoluminescence intensity of up to 270%, 258% and 240% when thin films of polyfluorenes of average molecular weights of 105,491 g/mol, 63,114 g/mol and 14,000 g/mol, respectively, experienced increases in their β-phase fractions upon processing.
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Affiliation(s)
- Otto Todor-Boer
- Research Institute for Analytical Instrumentation Subsidiary, National Institute for Research and Development of Optoelectronics Bucharest INOE 2000, 67 Donath Street, 400293 Cluj-Napoca, Romania;
| | - Cosmin Farcău
- National Institute for Research and Development of Isotopic and Molecular Technologies INCDTIM, 67-103 Donath Street, 400293 Cluj-Napoca, Romania;
- Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeș-Bolyai University, 400271 Cluj-Napoca, Romania
| | - Ioan Botiz
- Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeș-Bolyai University, 400271 Cluj-Napoca, Romania
- Department of Physics of Condensed Matter and Advanced Technologies, Faculty of Physics, Babeș-Bolyai University, 400084 Cluj-Napoca, Romania
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Li J, Liu X, Xi J, Deng L, Yang Y, Li X, Sun H. Recent Development of Polymer Nanofibers in the Field of Optical Sensing. Polymers (Basel) 2023; 15:3616. [PMID: 37688242 PMCID: PMC10489887 DOI: 10.3390/polym15173616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/25/2023] [Accepted: 08/30/2023] [Indexed: 09/10/2023] Open
Abstract
In recent years, owing to the continuous development of polymer nanofiber manufacturing technology, various nanofibers with different structural characteristics have emerged, allowing their application in the field of sensing to continually expand. Integrating polymer nanofibers with optical sensors takes advantage of the high sensitivity, fast response, and strong immunity to electromagnetic interference of optical sensors, enabling widespread use in biomedical science, environmental monitoring, food safety, and other fields. This paper summarizes the research progress of polymer nanofibers in optical sensors, classifies and analyzes polymer nanofiber optical sensors according to different functions (fluorescence, Raman, polarization, surface plasmon resonance, and photoelectrochemistry), and introduces the principles, structures, and properties of each type of sensor and application examples in different fields. This paper also looks forward to the future development directions and challenges of polymer nanofiber optical sensors, and provides a reference for in-depth research of sensors and industrial applications of polymer nanofibers.
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Affiliation(s)
- Jinze Li
- School of Optoelectronic Engineering, Xidian University, Xi'an 710071, China
| | - Xin Liu
- School of Physics, Xidian University, Xi'an 710071, China
| | - Jiawei Xi
- School of Optoelectronic Engineering, Xidian University, Xi'an 710071, China
| | - Li Deng
- School of Optoelectronic Engineering, Xidian University, Xi'an 710071, China
| | - Yanxin Yang
- School of Optoelectronic Engineering, Xidian University, Xi'an 710071, China
| | - Xiang Li
- School of Optoelectronic Engineering, Xidian University, Xi'an 710071, China
| | - Hao Sun
- School of Optoelectronic Engineering, Xidian University, Xi'an 710071, China
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Acosta M, Santiago MD, Irvin JA. Electrospun Conducting Polymers: Approaches and Applications. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15248820. [PMID: 36556626 PMCID: PMC9782039 DOI: 10.3390/ma15248820] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 12/02/2022] [Accepted: 12/03/2022] [Indexed: 05/14/2023]
Abstract
Inherently conductive polymers (CPs) can generally be switched between two or more stable oxidation states, giving rise to changes in properties including conductivity, color, and volume. The ability to prepare CP nanofibers could lead to applications including water purification, sensors, separations, nerve regeneration, wound healing, wearable electronic devices, and flexible energy storage. Electrospinning is a relatively inexpensive, simple process that is used to produce polymer nanofibers from solution. The nanofibers have many desirable qualities including high surface area per unit mass, high porosity, and low weight. Unfortunately, the low molecular weight and rigid rod nature of most CPs cannot yield enough chain entanglement for electrospinning, instead yielding polymer nanoparticles via an electrospraying process. Common workarounds include co-extruding with an insulating carrier polymer, coaxial electrospinning, and coating insulating electrospun polymer nanofibers with CPs. This review explores the benefits and drawbacks of these methods, as well as the use of these materials in sensing, biomedical, electronic, separation, purification, and energy conversion and storage applications.
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Affiliation(s)
- Mariana Acosta
- Materials Science, Engineering and Commercialization Program, Texas State University, San Marcos, TX 78666, USA
| | - Marvin D. Santiago
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA
| | - Jennifer A. Irvin
- Materials Science, Engineering and Commercialization Program, Texas State University, San Marcos, TX 78666, USA
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA
- Correspondence:
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Halicka K, Meloni F, Czok M, Spychalska K, Baluta S, Malecha K, Pilo MI, Cabaj J. New Trends in Fluorescent Nanomaterials-Based Bio/Chemical Sensors for Neurohormones Detection-A Review. ACS OMEGA 2022; 7:33749-33768. [PMID: 36188279 PMCID: PMC9520559 DOI: 10.1021/acsomega.2c04134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 09/05/2022] [Indexed: 06/16/2023]
Abstract
The study of neurotransmitters and stress hormones allows the determination of indicators of the current stress load in the body. These species also create a proper strategy of stress protection. Nowadays, stress is a general factor that affects the population, and it may cause a wide range of serious disorders. Abnormalities in the level of neurohormones, caused by chronic psychological stress, can occur in, for instance, corporate employees, health care workers, shift workers, policemen, or firefighters. Here we present a new nanomaterials-based sensors technology development for the determination of neurohormones. We focus on fluorescent sensors/biosensors that utilize nanomaterials, such as quantum dots or carbon nanomaterials. Nanomaterials, owing to their diversity in size and shape, have been attracting increasing attention in sensing or bioimaging. They possess unique properties, such as fluorescent, electronic, or photoluminescent features. In this Review, we summarize new trends in adopting nanomaterials for applications in fluorescent sensors for neurohormone monitoring.
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Affiliation(s)
- Kinga Halicka
- Faculty
of Chemistry and Faculty of Microsystem Electronics and Photonics, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Francesca Meloni
- Department
of Chemistry and Pharmacy, University of
Sassari, Via Vienna 2, 07100 Sassari, Italy
| | - Mateusz Czok
- Faculty
of Chemistry and Faculty of Microsystem Electronics and Photonics, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Kamila Spychalska
- Faculty
of Chemistry and Faculty of Microsystem Electronics and Photonics, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Sylwia Baluta
- Faculty
of Chemistry and Faculty of Microsystem Electronics and Photonics, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Karol Malecha
- Faculty
of Chemistry and Faculty of Microsystem Electronics and Photonics, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Maria I. Pilo
- Department
of Chemistry and Pharmacy, University of
Sassari, Via Vienna 2, 07100 Sassari, Italy
| | - Joanna Cabaj
- Faculty
of Chemistry and Faculty of Microsystem Electronics and Photonics, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
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Azzouz A, Vikrant K, Kim KH, Ballesteros E, Rhadfi T, Malik AK. Advances in colorimetric and optical sensing for gaseous volatile organic compounds. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.06.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Terra IAA, Sanfelice RC, Scagion VP, Tomazio NB, Mendonça CR, Nunes LAO, Correa DS. Polyvinylpyrrolidone electrospun nanofibers doped with Eu3+: Fabrication, characterization, and application in gas sensors. J Appl Polym Sci 2019. [DOI: 10.1002/app.47775] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Idelma A. A. Terra
- Nanotechnology National Laboratory for Agriculture (LNNA)Embrapa Instrumentação 13560‐970, São Carlos São Paulo Brazil
| | - Rafaela C. Sanfelice
- Departamento de Engenharia QuímicaInstituto de Ciências Tecnológicas e Exatas – ICTE, Universidade Federal do Triângulo Mineiro – UFTM Uberaba Minas Gerais Brazil
| | - Vanessa P. Scagion
- Nanotechnology National Laboratory for Agriculture (LNNA)Embrapa Instrumentação 13560‐970, São Carlos São Paulo Brazil
- PPGQ, Department of Chemistry, Center for Exact Sciences and TechnologyFederal University of São Carlos (UFSCar) São Carlos São Paulo Brazil
| | - Nathalia B. Tomazio
- São Carlos Institute of Physics (IFSC)São Paulo University (USP) 13560‐970, São Carlos São Paulo Brazil
| | - Cleber R. Mendonça
- São Carlos Institute of Physics (IFSC)São Paulo University (USP) 13560‐970, São Carlos São Paulo Brazil
| | - Luiz A. O. Nunes
- São Carlos Institute of Physics (IFSC)São Paulo University (USP) 13560‐970, São Carlos São Paulo Brazil
| | - Daniel S. Correa
- Nanotechnology National Laboratory for Agriculture (LNNA)Embrapa Instrumentação 13560‐970, São Carlos São Paulo Brazil
- PPGQ, Department of Chemistry, Center for Exact Sciences and TechnologyFederal University of São Carlos (UFSCar) São Carlos São Paulo Brazil
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Julolidine-labelled fluorinated block copolymers for the development of two-layer films with highly sensitive vapochromic response. Sci China Chem 2018. [DOI: 10.1007/s11426-018-9302-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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8
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π-Conjugated polymer nanowires: advances and perspectives toward effective commercial implementation. Polym J 2018. [DOI: 10.1038/s41428-018-0062-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Terra IAA, Mercante LA, Andre RS, Correa DS. Fluorescent and Colorimetric Electrospun Nanofibers for Heavy-Metal Sensing. BIOSENSORS 2017; 7:E61. [PMID: 29244741 PMCID: PMC5746784 DOI: 10.3390/bios7040061] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 12/09/2017] [Accepted: 12/13/2017] [Indexed: 12/11/2022]
Abstract
The accumulation of heavy metals in the human body and/or in the environment can be highly deleterious for mankind, and currently, considerable efforts have been made to develop reliable and sensitive techniques for their detection. Among the detection methods, chemical sensors appear as a promising technology, with emphasis on systems employing optically active nanofibers. Such nanofibers can be obtained by the electrospinning technique, and further functionalized with optically active chromophores such as dyes, conjugated polymers, carbon-based nanomaterials and nanoparticles, in order to produce fluorescent and colorimetric nanofibers. In this review we survey recent investigations reporting the use of optically active electrospun nanofibers in sensors aiming at the specific detection of heavy metals using colorimetry and fluorescence methods. The examples given in this review article provide sufficient evidence of the potential of optically electrospun nanofibers as a valid approach to fabricate highly selective and sensitive optical sensors for fast and low-cost detection of heavy metals.
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Affiliation(s)
- Idelma A A Terra
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, São Carlos 13560-970, SP, Brazil.
| | - Luiza A Mercante
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, São Carlos 13560-970, SP, Brazil.
- PPG-CEM, Department of Materials Engineering, Center for Exact Sciences and Technology, Federal University of São Carlos (UFSCar), São Carlos 13565-905, SP, Brazil.
| | - Rafaela S Andre
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, São Carlos 13560-970, SP, Brazil.
| | - Daniel S Correa
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, São Carlos 13560-970, SP, Brazil.
- PPGQ, Department of Chemistry, Center for Exact Sciences and Technology, Federal University of São Carlos (UFSCar), São Carlos 13565-905, SP, Brazil.
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