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Qian J, Li J, Jiang Y, Liu C, Zhu J, Gu L, Guo Y. Simple fluorescence "turn-off" assay for Congo red using commercial 2-aminophthalic acid. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:2760-2765. [PMID: 38638102 DOI: 10.1039/d4ay00506f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
In this work, the fluorescence properties of 2-aminophthalic acid (NH2-BDC) were studied. NH2-BDC possessed excellent optical properties including bright blue emission with maximum emission at 425 nm, a high quantum yield of 38.49% and excellent photostability. And the fluorescence of NH2-BDC could be selectively quenched by Congo red, which was ascribed to the inner filter effect. Accordingly, NH2-BDC was further employed for fluorescence "turn-off" assay of Congo red with a linear range of 0.05-50 μM and a limit of detection of 1.72 μM. And the sensor was used for the detection of Congo red in real water samples with acceptable results.
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Affiliation(s)
- Jiaqi Qian
- School of Teacher Education, Nanjing University of Information Science & Technology, Nanjing 210044, China.
| | - Jie Li
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Yihan Jiang
- School of Teacher Education, Nanjing University of Information Science & Technology, Nanjing 210044, China.
| | - Chaoyong Liu
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Jiayao Zhu
- School of Teacher Education, Nanjing University of Information Science & Technology, Nanjing 210044, China.
| | - Liyu Gu
- School of Teacher Education, Nanjing University of Information Science & Technology, Nanjing 210044, China.
| | - Yongming Guo
- School of Teacher Education, Nanjing University of Information Science & Technology, Nanjing 210044, China.
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing 210044, China
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2
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Suzuki Y, Yagi M, Kikuchi A. Photoexcited triplet state and singlet oxygen generation of quinine, an antimalarial drug. Photochem Photobiol Sci 2023:10.1007/s43630-023-00492-4. [PMID: 37897563 DOI: 10.1007/s43630-023-00492-4] [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: 05/24/2023] [Accepted: 10/04/2023] [Indexed: 10/30/2023]
Abstract
Energy transfer from the lowest excited triplet (T1) state of quinine (QN) to ground-state molecular oxygen produces singlet oxygen. In aqueous solutions, a neutral form QN, a singly protonated cation QNH+ and doubly protonated cation QNH22+ are present according to their pKa values. To the best of our knowledge, the pH dependence of QN-photosensitized singlet oxygen generation has not been reported. In the present study, the quantum yields of photosensitized singlet oxygen generation (ΦΔ) by QN, QNH+ and QNH22+ have been determined through the measurements of time-resolved near-IR phosphorescence. ΦΔ decreases in the following order: ΦΔ (QNH+) > ΦΔ (QNH22+) > ΦΔ (QN). The nature of the T1 states of QN, QNH+ and QNH22+ has been studied through the measurements of transient absorption, phosphorescence and EPR by changing the pH of the medium. This is the first report of EPR for the T1 state of QN. The photoexcited T1 state of 6-methoxyquinoline (6-MeOQL), a closely related component, has been studied for comparison. The observed zero-field splitting parameters, phosphorescence spectra and triplet lifetimes suggest that the nature of the T1 state of QN can be regarded as a locally excited 3ππ*state within 6-MeOQL. The two unpaired electrons localize mainly on 6-MeOQL. The nature of the T1 state of QN scarcely changes when the quinuclidine nitrogen site is protonated. Applying the Förster cycle to the T1 states of QN and its protonated cations, it was found that QNH+ becomes more basic when excited to its T1 state.
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Affiliation(s)
- Yuta Suzuki
- Department of Chemistry, Graduate School of Engineering Science, Yokohama National University, Tokiwadai, Hodogaya-Ku, Yokohama, 240-8501, Japan
| | - Mikio Yagi
- Department of Chemistry, Graduate School of Engineering Science, Yokohama National University, Tokiwadai, Hodogaya-Ku, Yokohama, 240-8501, Japan
| | - Azusa Kikuchi
- Department of Chemistry, Graduate School of Engineering Science, Yokohama National University, Tokiwadai, Hodogaya-Ku, Yokohama, 240-8501, Japan.
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Secondary through-space interactions facilitated single-molecule white-light emission from clusteroluminogens. Nat Commun 2022; 13:3492. [PMID: 35715394 PMCID: PMC9205862 DOI: 10.1038/s41467-022-31184-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 06/07/2022] [Indexed: 02/06/2023] Open
Abstract
Clusteroluminogens refer to some non-conjugated molecules that show visible light and unique electronic properties with through-space interactions due to the formation of aggregates. Although mature and systematic theories of molecular photophysics have been developed to study conventional conjugated chromophores, it is still challenging to endow clusteroluminogens with designed photophysical properties by manipulating through-space interactions. Herein, three clusteroluminogens with non-conjugated donor-acceptor structures and different halide substituents are designed and synthesized. These compounds show multiple emissions and even single-molecule white-light emission in the crystalline state. The intensity ratio of these emissions is easily manipulated by changing the halide atom and excitation wavelength. Experimental and theoretical results successfully disclose the electronic nature of these multiple emissions: through-space conjugation for short-wavelength fluorescence, through-space charge transfer based on secondary through-space interactions for long-wavelength fluorescence, and room-temperature phosphorescence. The introduction of secondary through-space interactions to clusteroluminogens not only enriches their varieties of photophysical properties but also inspires the establishment of novel aggregate photophysics for clusteroluminescence. Although mature and systematic theories of molecular photophysics have been developed, it is still challenging to endow clusteroluminogens (CLgens) with designed photophysical properties by manipulating through-space interactions. Here, the authors design three CLgens that show multiple emissions and white-light emission in the crystalline state, and emphasize the important role of secondary through-space interactions between the acceptor and non-conjugated donor units.
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Alshareef M, Snari RM, Alaysuy O, Aldawsari AM, Abumelha HM, Katouah H, El-Metwaly NM. Optical Detection of Acetone Using " Turn-Off" Fluorescent Rice Straw Based Cellulose Carbon Dots Imprinted onto Paper Dipstick for Diabetes Monitoring. ACS OMEGA 2022; 7:16766-16777. [PMID: 35601306 PMCID: PMC9118203 DOI: 10.1021/acsomega.2c01492] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Accepted: 04/26/2022] [Indexed: 05/08/2023]
Abstract
Persistent bad breath has been reported as a sign of serious diabetes health conditions. If an individual's breath has a strong odor of acetone, it may indicate high levels of ketones in the blood owing to diabetic ketoacidosis. Thus, acetone gas in the breath of patients with diabetes can be detected using the current easy-to-use fluorescent test dipstick. In another vein, rice straw waste is the most well-known solid pollutant worldwide. Thus, finding a simple technique to change rice straw into a valuable material is highly important. A straightforward and environmentally friendly approach for reprocessing rice straw as a starting material for the creation of fluorescent nitrogen-doped carbon dots (NCDs) has been established. The preparation process of NCDs was carried out via one-pot hydrothermal carbonization using NH4OH as a passivation substance. A testing strip was developed on the basis of cellulose CD nanoparticles (NPs) immobilized onto cellulose paper assay. The NCDs demonstrated a quantum yield of 23.76%. A fluorescence wavelength was detected at 443 nm upon applying an excitation wavelength of 354 nm. NCDs demonstrated remarkable selectivity for acetone gas as their fluorescence was definitely exposed to quenching by acetone as a consequence of the inner filter effect. A linear correlation was observed across the concentration range of 0.5-150 mM. To detect and measure acetone gas, the present cellulose paper strip has a "switch off" fluorescent signal. A readout limit was accomplished for an aqueous solution of acetone as low as 0.5 mM under ambient conditions. The chromogenic fluorescence of the cellulose assay responsiveness depends on the fluorescence quenching characteristic of the cellulose carbon dots in acetone. A thin fluorescent cellulose carbon dot layer was deposited onto the surface of cellulose strips by a simple impregnation process. CDs were made using NP morphology and analyzed using infrared spectroscopy and transmission electron microscopy. The carbon dot distribution on the paper strip was evaluated by scanning electron microscope and energy-dispersive X-ray analysis. The absorption and fluorescence spectral analyses were investigated. The paper sheets' mechanical qualities were also examined.
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Affiliation(s)
- Mubark Alshareef
- Department
of Chemistry, Faculty of Applied Science, Umm Al Qura University, Makkah 24230, Saudi Arabia
| | - Razan M. Snari
- Department
of Chemistry, Faculty of Applied Science, Umm Al Qura University, Makkah 24230, Saudi Arabia
| | - Omaymah Alaysuy
- Department
of Chemistry, College of Science, University
of Tabuk, 71474 Tabuk, Saudi Arabia
| | - Afrah M. Aldawsari
- Department
of Chemistry, Faculty of Applied Science, Umm Al Qura University, Makkah 24230, Saudi Arabia
- King
Abdulaziz City for Science and Technology, P.O. Box 6086, Riyadh 11442, Saudi Arabia
| | - Hana M. Abumelha
- Department
of Chemistry, College of Science, Princess
Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Hanadi Katouah
- Department
of Chemistry, Faculty of Applied Science, Umm Al Qura University, Makkah 24230, Saudi Arabia
| | - Nashwa M. El-Metwaly
- Department
of Chemistry, Faculty of Applied Science, Umm Al Qura University, Makkah 24230, Saudi Arabia
- Department
of Chemistry, Faculty of Science, Mansoura
University, El-Gomhoria
Street, Mansoura 35516, Egypt
- ;
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5
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Li Q, Wu Y, Cao J, Liu Y, Wang Z, Zhu H, Zhang H, Huang F. Pillararene-Induced Intramolecular Through-Space Charge Transfer and Single-Molecule White-Light Emission. Angew Chem Int Ed Engl 2022; 61:e202202381. [PMID: 35234348 DOI: 10.1002/anie.202202381] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Indexed: 12/15/2022]
Abstract
The fabrication of single-molecule white-light emission (SMWLE) materials has become a highly studied topic in recent years and through-space charge transfer (TSCT) is emerging as an important concept in this field. However, the preparation of ideal TSCT-based SMWLE materials is still a big challenge. Herein, we report a bifunctional pillar[5]arene (TPCN-P5-TPA) with a linear donor-spacer-acceptor structure and aggregation-induced emission (AIE) property. The bulky pillar[5]arene between the donor and acceptor induces a twisted conformation and a non-conjugated structure, resulting in intramolecular TSCT. In addition, the AIE feature and pillar[5]arene cavity endow TPCN-P5-TPA with responsiveness to viscosity and polar guests, by which the TSCT emission is triggered. The combination of blue locally-excited state emission and yellow TSCT emission of TPCN-P5-TPA generates SMWLE. Therefore, we provide a new and versatile strategy for the construction of TSCT-based SMWLE materials.
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Affiliation(s)
- Qi Li
- State Key Laboratory of Chemical Engineering, Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Yitao Wu
- State Key Laboratory of Chemical Engineering, Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Jiajun Cao
- State Key Laboratory of Chemical Engineering, Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Yang Liu
- State Key Laboratory of Chemical Engineering, Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Zeju Wang
- State Key Laboratory of Chemical Engineering, Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Huangtianzhi Zhu
- State Key Laboratory of Chemical Engineering, Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Haoke Zhang
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, China.,MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China.,Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, South China University of Technology, Guangzhou, 510640, China
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering, Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China.,ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, China.,Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
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6
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Li Q, Wu Y, Cao J, Liu Y, Wang Z, Zhu H, Zhang H, Huang F. Pillararene‐Induced Intramolecular Through‐Space Charge Transfer and Single‐Molecule White‐Light Emission. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Qi Li
- State Key Laboratory of Chemical Engineering Stoddart Institute of Molecular Science Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Yitao Wu
- State Key Laboratory of Chemical Engineering Stoddart Institute of Molecular Science Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Jiajun Cao
- State Key Laboratory of Chemical Engineering Stoddart Institute of Molecular Science Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Yang Liu
- State Key Laboratory of Chemical Engineering Stoddart Institute of Molecular Science Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Zeju Wang
- State Key Laboratory of Chemical Engineering Stoddart Institute of Molecular Science Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Huangtianzhi Zhu
- State Key Laboratory of Chemical Engineering Stoddart Institute of Molecular Science Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Haoke Zhang
- ZJU-Hangzhou Global Scientific and Technological Innovation Center Hangzhou 311215 China
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China
- Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates South China University of Technology Guangzhou 510640 China
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering Stoddart Institute of Molecular Science Department of Chemistry Zhejiang University Hangzhou 310027 China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center Hangzhou 311215 China
- Green Catalysis Center and College of Chemistry Zhengzhou University Zhengzhou 450001 China
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7
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Zhou P, Aschauer U, Decurtins S, Feurer T, Häner R, Liu SX. Chemical control of photoinduced charge-transfer direction in a tetrathiafulvalene-fused dipyrrolylquinoxaline difluoroborate dyad. Chem Commun (Camb) 2020; 56:13421-13424. [DOI: 10.1039/d0cc05736c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Chemical regulation of a distinct photoinduced charge flow over multiple pathways present in an electron donor–acceptor dyad is demonstrated.
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Affiliation(s)
- Ping Zhou
- Department of Chemistry and Biochemistry
- University of Bern
- CH-3012 Bern
- Switzerland
| | - Ulrich Aschauer
- Department of Chemistry and Biochemistry
- University of Bern
- CH-3012 Bern
- Switzerland
| | - Silvio Decurtins
- Department of Chemistry and Biochemistry
- University of Bern
- CH-3012 Bern
- Switzerland
| | - Thomas Feurer
- Institute of Applied Physics
- University of Bern
- CH-3012 Bern
- Switzerland
| | - Robert Häner
- Department of Chemistry and Biochemistry
- University of Bern
- CH-3012 Bern
- Switzerland
| | - Shi-Xia Liu
- Department of Chemistry and Biochemistry
- University of Bern
- CH-3012 Bern
- Switzerland
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