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Yamaguchi I, Ikawa K, Takimiya N, Wang A. Tetraphenylethene Derivatives Bearing Alkylammonium Substituents: Synthesis, Chemical Properties, and Application as BSA, Telomere DNA, and Hydroxyl Radical Sensors. Molecules 2023; 28:5663. [PMID: 37570635 PMCID: PMC10419492 DOI: 10.3390/molecules28155663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 07/22/2023] [Accepted: 07/24/2023] [Indexed: 08/13/2023] Open
Abstract
Tetraphenylethene derivatives (TPEs) are used as luminescence probes for the detection of metal ions and biomolecules. These sensors function by monitoring the increase in the photoluminescence (PL) intensity of the TPEs resulting from aggregation-induced emission (AIE) upon interaction with the analytes. The AIE behavior of the sensors was investigated by measuring their PL. In this study, PL, PL lifetime, and confocal laser scanning microscopy measurements were carried out as part of our in-depth investigation of AIE behavior of TPEs for the detection of biomolecules and radical species. We used 1,1,2,2-tetrakis(4-((trimethylammonium)alkoxy)phenyl)tetraphenylethene tetrabromide (TPE-C(m)N+Me3Br-, m = 2, 4, and 6, where m denotes the number of methylene groups in the alkyl chain) and TPE-C(m)N+Me3TCNQ-• (TCNQ-• is the 7,7',8,8'-tetracyanoquinodimethane anion radical) as luminescent probes for the detection of bovine serum albumin (BSA), DNA, and the hydroxyl radical (•OH) generated from Fenton's reagent. The sensing performance of TPE-C(m)N+Me3Br- for BSA and DNA was found to depend on the length of the alkyl chains (m). UV-vis and PL measurements revealed that the responses of TPE-C(m)N+Me3Br- and TPE-C(4)N+TCNQ-• to Fenton's reagent depended on the solvent. The electrochemical properties of the TPE derivatives prepared in this study were additionally investigated via cyclic voltammetry.
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Affiliation(s)
- Isao Yamaguchi
- Department of Materials Chemistry, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan (N.T.)
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Abstract
Ionic liquids represent a class of highly versatile organic compounds used extensively in the last decade for lignocellulose biomass fractionation and dissolution, as well as property modifiers for wood materials. This review is dedicated to the use of ionic liquids as antifungal agents for wood preservation. Wood preservation against fungal attack represents a relatively new domain of application for ionic liquids, emerging in the late 1990s. Comparing to other application domains of ionic liquids, this particular one has been relatively little researched. Ionic liquids may be promising as wood preservatives due to their ability to swell wood, which translates into better penetration ability and fixation into the bulk of the wood material than other conventional antifungal agents, avoiding leaching over time. The antifungal character of ionic liquids depends on the nature of their alkyl-substituted cation, on the size and position of their substituents, and of their anion. It pertains to a large variety of wood-colonizing fungi, both Basidiomycetes and Fungiimperfecti.
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Affiliation(s)
- Catalin Croitoru
- Materials Engineering and Welding Department, Transilvania University of Brasov, Eroilor 29 Blvd., 500039 Brasov, Romania
| | - Ionut Claudiu Roata
- Materials Engineering and Welding Department, Transilvania University of Brasov, Eroilor 29 Blvd., 500039 Brasov, Romania
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Lin CW, Liu F, Chen TY, Lee KH, Chang CK, He Y, Leung TL, Ng AMC, Hsu CH, Popović J, Djurišić A, Ahn H. Structure-Dependent Photoluminescence in Low-Dimensional Ethylammonium, Propylammonium, and Butylammonium Lead Iodide Perovskites. ACS Appl Mater Interfaces 2020; 12:5008-5016. [PMID: 31888331 DOI: 10.1021/acsami.9b17881] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Hybrid organic-inorganic perovskites have attracted great attention as the next generation materials for photovoltaic and light-emitting devices. However, their environment instability issue remains as the largest challenge for practical applications. Recently emerging two-dimensional (2D) perovskites with Ruddlesden-Popper structures are found to greatly improve the stability and aging problems. Furthermore, strong confinement of excitons in these natural quantum-well structures results in the distinct and narrow light emission in the visible spectral range, enabling the development of spectrally tunable light sources. Besides the strong quasi-monochromatic emission, some 2D perovskites composed of the specific organic cations and inorganic layer structures emit a pronounced broadband emission. Herein, we report the light-emitting properties and the degradation of low-dimensional perovskites consisting of the three shortest alkylammonium spacers, mono-ethylammonium (EA), n-propylammonium (PA), and n-butylammonium (BA). While (BA)2PbI4 is known to form well-oriented 2D thin films consisting of layers of corner-sharing PbI6 octahedra separated by a bilayer of BA cations, EA with shorter alkyl chains tends to form other types of lower-dimensional structures. Nevertheless, optical absorption edges of as-prepared fresh EAPbI3, (PA)2PbI4, and (BA)2PbI4 are obviously blue-shifted to 2.4-2.5 eV compared to their 3D counterpart, methylammonium lead iodide (MAPbI3) perovskite, and they all emit narrow excitonic photoluminescence. Furthermore, by carefully optimizing deposition conditions, we have achieved a predominantly 2D structure for (PA)2PbI4. However, unlike (BA)2PbI4, upon exposure to ambient environment, (PA)2PbI4 readily transforms to a different crystal structure, exhibiting a prominently broadband light from ∼500 to 800 nm and a gradual increase in intensity as structural transformation proceeds.
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Affiliation(s)
- Chang-Wei Lin
- Department of Photonics, College of Electrical and Computer Engineering , National Chiao Tung University , Hsinchu 30010 , Taiwan
| | - Fangzhou Liu
- Department of Physics , University of Hong Kong , Pokfulam Road , Hong Kong 999077 , China
| | - Ting-Yang Chen
- Department of Photonics, College of Electrical and Computer Engineering , National Chiao Tung University , Hsinchu 30010 , Taiwan
| | - Kuan-Hua Lee
- Department of Photonics, College of Electrical and Computer Engineering , National Chiao Tung University , Hsinchu 30010 , Taiwan
| | - Chung-Kai Chang
- National Synchrotron Radiation Research Center , Hsinchu 30076 , Taiwan
| | - Yanling He
- Department of Physics , University of Hong Kong , Pokfulam Road , Hong Kong 999077 , China
- Department of Physics , Southern University of Science and Technology , No. 1088, Xueyuan Road , Shenzhen , Guangdong 518055 , China
| | - Tik Lun Leung
- Department of Physics , Southern University of Science and Technology , No. 1088, Xueyuan Road , Shenzhen , Guangdong 518055 , China
| | - Alan Man Ching Ng
- Department of Physics , Southern University of Science and Technology , No. 1088, Xueyuan Road , Shenzhen , Guangdong 518055 , China
| | - Chia-Hung Hsu
- Department of Photonics, College of Electrical and Computer Engineering , National Chiao Tung University , Hsinchu 30010 , Taiwan
- National Synchrotron Radiation Research Center , Hsinchu 30076 , Taiwan
| | - Jasminka Popović
- Center of Excellence for Advanced Materials and Sensing Devices, Division for Materials Physics, Laboratory for Synthesis and Crystallography of Functional Materials , Ruđer Bošković Institute , Bijenička 54 , Zagreb 52210 , Croatia
| | - Aleksandra Djurišić
- Department of Physics , University of Hong Kong , Pokfulam Road , Hong Kong 999077 , China
| | - Hyeyoung Ahn
- Department of Photonics, College of Electrical and Computer Engineering , National Chiao Tung University , Hsinchu 30010 , Taiwan
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