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Lee H, Lee S, Han MS. Turn-On Fluorescent pH Probes for Monitoring Alkaline pHs Using Bis[2-(2'-hydroxyphenyl)benzazole] Derivatives. SENSORS (BASEL, SWITZERLAND) 2023; 23:2044. [PMID: 36850652 PMCID: PMC9965889 DOI: 10.3390/s23042044] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/08/2023] [Accepted: 02/09/2023] [Indexed: 06/18/2023]
Abstract
For surveilling human health, industries, and the environment, pH monitoring is important. Numerous studies on fluorescent probes have been conducted to monitor various pH ranges. However, fluorescent probes that are capable of sensing alkaline regions are rare. In this study, we propose turn-on-type fluorescent probes for detecting alkaline pHs using bis[2-(2'-hydroxyphenyl)benzazole] (bis(HBX)) derivatives. These probes have high pKa values (from 9.7 to 10.8) and exhibit strong fluorescence intensity and color changes at alkaline pHs. Probes derived from bis(HBX) exhibit good photostability, reversibility, and anti-interference toward pH variations, which can be identified as a certain fluorescence change toward a basic pH. Therefore, compounds would be advantageous to use fluorescent probes for monitoring alkaline pH changes.
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2
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8-Hydroxyquinoline-BODIPY based dual mode pH probe: Intuits acidic and basic environments through two different mechanisms. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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3
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A Portable ‘Plug-and-Play’ Fibre Optic Sensor for In-Situ Measurements of pH Values for Microfluidic Applications. MICROMACHINES 2022; 13:mi13081224. [PMID: 36014146 PMCID: PMC9416338 DOI: 10.3390/mi13081224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 07/20/2022] [Accepted: 07/26/2022] [Indexed: 12/10/2022]
Abstract
Microfluidics is used in many applications ranging from chemistry, medicine, biology and biomedical research, and the ability to measure pH values in-situ is an important parameter for creating and monitoring environments within a microfluidic chip for many such applications. We present a portable, optical fibre-based sensor for monitoring the pH based on the fluorescent intensity change of an acrylamidofluorescein dye, immobilized on the tip of a multimode optical fibre, and its performance is evaluated in-situ in a microfluidic channel. The sensor showed a sigmoid response over the pH range of 6.0–8.5, with a maximum sensitivity of 0.2/pH in the mid-range at pH 7.5. Following its evaluation, the sensor developed was used in a single microfluidic PDMS channel and its response was monitored for various flow rates within the channel. The results thus obtained showed that the sensor is sufficiently robust and well-suited to be used for measuring the pH value of the flowing liquid in the microchannel, allowing it to be used for a number of practical applications in ‘lab-on-a-chip’ applications where microfluidics are used. A key feature of the sensor is its simplicity and the ease of integrating the sensor with the microfluidic channel being probed.
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4
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Antina EV, Berezin MB, V’yugin AI, Guseva GB, Bumagina NA, Antina LA, Ksenofontov AA, Nuraneeva EN, Kalyagin AA, Bocharov PS, Lukanov MM, Krasovskaya ZS, Kalinkina VA, Dogadaeva SA. Chemistry and Practical Application of Dipyrromethene Ligands, Salts, and Coordination Compounds as Optical Sensors for Analytes of Various Nature (A Review). RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s0036023622030032] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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5
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Low Molecular Weight Probe for Selective Sensing of PH and Cu 2+ Working as Three INHIBIT Based Digital Comparator. J Fluoresc 2022; 32:405-417. [PMID: 34988841 DOI: 10.1007/s10895-021-02856-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 11/22/2021] [Indexed: 10/19/2022]
Abstract
A novel simple molecular chemosensor 2 was synthesized and examined for pH, cations and anions detection. At pH values higher than 10, probe 2 switches on a green emission where the excited state intramolecular proton transfer (ESIPT) is ceased. Also, the probe absorption spectrum shows a clear pH dependence, and the probe aqueous solution (ethanol/water = 1:2, borate buffer) responds selectively and sensitively through its fluorescence spectrum to the presence of Cu2+. Job's plot gave a 2:1 stoichiometry of Probe-2/Cu2+ complex, which responds to the presence of S2- and H2PO4- in aqueous solution (ethanol/water = 1:2, borate buffer) by its absorption and fluorescence spectra. In addition, probe 2 mimics a digital comparator based on three INHIBIT logic gates by different outputs using HO- and H+ as inputs. Moreover, probe 2 also executes AND and NOT TRANSFER logic gates using Cu2+ and S2- as inputs.
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6
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Antina LA, Ksenofontov AA, Kazak AV, Usol’tseva NV, Antina EV, Berezin MB. Effect of ms-substitution on aggregation behavior and spectroscopic properties of BODIPY dyes in aqueous solution, Langmuir-Schaefer and poly(methyl methacrylate) thin films. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126449] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Li Y, Wang Y, Chen S, Wang Z, Feng L. Inkjet-printed paper-based sensor array for highly accurate pH sensing. Anal Chim Acta 2021; 1154:338275. [PMID: 33736797 DOI: 10.1016/j.aca.2021.338275] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 01/06/2021] [Accepted: 01/29/2021] [Indexed: 10/22/2022]
Abstract
In this work, a novel paper-based colorimetric sensor array was developed by inkjet printing method with polyethylene glycol (PEG) immobilization system. Eight commercially available pH indicators with sequential pH segments in nearly whole pH range were dissolved in nine mixed inks to fabricate the 3 × 3 sensor array on mixed cellulose ester (MCE) paper. Based on homogeneous deposition of inkjet printing, the eight pH indicators were sufficiently immobilized on MCE paper with the assistance of PEG-400, which guaranteed pH detection of aqueous samples on sensor array without hydrophobic barriers. Besides, the indicating range of each indicator obtained an extension through the addition of PEG 400, which remarkably enriched the distinguishable capability of sensor array and benefited for high resolution of pH detection. As such, the as-fabricated paper-based sensor array exhibited an excellent discrimination ability in pH range of 1.00-13.60 with a high resolution of 0.20 pH unit, not only for standard pH buffer solutions but for real aqueous samples.
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Affiliation(s)
- Yanqi Li
- Department of Instrumentation and Analytical Chemistry, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Yu Wang
- Department of Instrumentation and Analytical Chemistry, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, PR China
| | - Shuqin Chen
- Department of Instrumentation and Analytical Chemistry, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Zhenming Wang
- Department of Instrumentation and Analytical Chemistry, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Liang Feng
- Department of Instrumentation and Analytical Chemistry, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, PR China.
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8
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Wei TB, Dong HQ, Ma XQ, Yang QY, Wang ZH, Guan WL, Zhang YF, Zhang YM, Yao H, Lin Q. A novel photochemical sensor based on quinoline-functionalized phenazine derivatives for multiple substrate detection. NEW J CHEM 2021. [DOI: 10.1039/d0nj06175a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A novel photochemical sensor based on quinoline-functionalized phenazine derivatives for highly sensitive detection of multiple substrates (l-Arg, CO2, and pH) was designed and synthesized.
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9
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Steinegger A, Wolfbeis OS, Borisov SM. Optical Sensing and Imaging of pH Values: Spectroscopies, Materials, and Applications. Chem Rev 2020; 120:12357-12489. [PMID: 33147405 PMCID: PMC7705895 DOI: 10.1021/acs.chemrev.0c00451] [Citation(s) in RCA: 181] [Impact Index Per Article: 45.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Indexed: 12/13/2022]
Abstract
This is the first comprehensive review on methods and materials for use in optical sensing of pH values and on applications of such sensors. The Review starts with an introduction that contains subsections on the definition of the pH value, a brief look back on optical methods for sensing of pH, on the effects of ionic strength on pH values and pKa values, on the selectivity, sensitivity, precision, dynamic ranges, and temperature dependence of such sensors. Commonly used optical sensing schemes are covered in a next main chapter, with subsections on methods based on absorptiometry, reflectometry, luminescence, refractive index, surface plasmon resonance, photonic crystals, turbidity, mechanical displacement, interferometry, and solvatochromism. This is followed by sections on absorptiometric and luminescent molecular probes for use pH in sensors. Further large sections cover polymeric hosts and supports, and methods for immobilization of indicator dyes. Further and more specific sections summarize the state of the art in materials with dual functionality (indicator and host), nanomaterials, sensors based on upconversion and 2-photon absorption, multiparameter sensors, imaging, and sensors for extreme pH values. A chapter on the many sensing formats has subsections on planar, fiber optic, evanescent wave, refractive index, surface plasmon resonance and holography based sensor designs, and on distributed sensing. Another section summarizes selected applications in areas, such as medicine, biology, oceanography, bioprocess monitoring, corrosion studies, on the use of pH sensors as transducers in biosensors and chemical sensors, and their integration into flow-injection analyzers, microfluidic devices, and lab-on-a-chip systems. An extra section is devoted to current challenges, with subsections on challenges of general nature and those of specific nature. A concluding section gives an outlook on potential future trends and perspectives.
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Affiliation(s)
- Andreas Steinegger
- Institute
of Analytical Chemistry and Food Chemistry, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Otto S. Wolfbeis
- Institute
of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, D-93040 Regensburg, Germany
| | - Sergey M. Borisov
- Institute
of Analytical Chemistry and Food Chemistry, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
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10
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Zhang F, Dong W, Ma Y, Jiang T, Liu B, Li X, Shao Y, Wu J. Fluorescent pH probes for alkaline pH range based on perylene tetra-(alkoxycarbonyl) derivatives. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.04.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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11
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Long R, Tang C, Li T, Tong X, Tong C, Guo Y, Gao Q, Wu L, Shi S. Dual-emissive carbon dots for dual-channel ratiometric fluorometric determination of pH and mercury ion and intracellular imaging. Mikrochim Acta 2020; 187:307. [PMID: 32356117 DOI: 10.1007/s00604-020-04287-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 04/19/2020] [Indexed: 11/26/2022]
Abstract
Dual-emissive carbon dots (CDs) were fabricated for dual-channel ratiometric fluorometric determination of pH and mercury ion (Hg2+) and intracellular imaging. Dual-emissive CDs were synthesized by one-pot solvothermal treatment of cabbage. The CDs exhibited two distinctive fluorescence emissions at 500 and 678 nm under single excitation at 410 nm. The green emission (500 nm) had reversible linear response to pH (7.0-12.0) due to deprotonation and protonation of surface functional groups and their non-covalent interactions. On the other hand, the red emission (678 nm) had efficient and selective fluorescence response to Hg2+ by formation of non-emission complex between CDs and Hg2+. The limit of detection (LOD) and limit of quantification (LOQ) for Hg2+ were 6.25 and 20.63 nM, respectively. The CDs have been successfully applied for label-free ratiometric fluorometric determination of pH and Hg2+ in fish and human serum samples with good recoveries (92.0-108.3%). In addition, the CDs had excellent photostability, low cytotoxicity, and good biocompatibility for intracellular imaging. All in all, the system was multi-functional in determination, high in sensitivity, and excellent in selectivity, which demonstrated wide and promising applicability for biosensing and bioimaging in the future. Graphical abstract Schematic presentation of dual-emission carbon dots (CDs) synthesized by solvothermal treatment of cabbage for dual-channel determination of pH and Hg2+.
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Affiliation(s)
- Ruiqing Long
- Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, People's Republic of China
| | - Cui Tang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 410078, Changsha, People's Republic of China
| | - Te Li
- Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, People's Republic of China
| | - Xia Tong
- Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, People's Republic of China
| | - Chaoying Tong
- Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, People's Republic of China
| | - Ying Guo
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 410078, Changsha, People's Republic of China.
| | - Qingping Gao
- Center of Stomatology, Xiangya Hospital, Central South University, Changsha, 410078, People's Republic of China
| | - Lihui Wu
- Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, People's Republic of China
| | - Shuyun Shi
- Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, People's Republic of China.
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12
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Bartelmess J, Zimmek D, Bartholmai M, Strangfeld C, Schäferling M. Fibre optic ratiometric fluorescence pH sensor for monitoring corrosion in concrete. Analyst 2020; 145:2111-2117. [PMID: 32016189 DOI: 10.1039/c9an02348h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In this communication a novel concept for pH sensing is introduced which is specifically adapted to monitor carbonation induced corrosion in concrete structures. The method is based on a ratiometric measurement principle, exploiting the pH sensitive colour switching of thymol blue in the basic pH regime and the emissive properties of two different (Zn)CdSe/ZnS core shell quantum dots. The transition point of thymol blue in a Hydrogel D4 matrix was determined to be at around pH 11.6, which fits ideally to the intended application. Next to the fundamental spectroscopic characterization of the ratiometric response, a new design for a sensor head, suitable for the incorporation into concrete matrices is presented. Toward this, a manufacturing process was developed which includes the preparation of a double layer of polymers containing either thymol blue or a quantum dot mixture inside a porous ceramic tube. Results of a proof-of-priciple performance test of the sensor head in solutions of different pH and in cement specimens are presented, with encouraging results paving the way for future field tests in concrete.
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Affiliation(s)
- Juergen Bartelmess
- Federal Institute of Materials Research and Testing (BAM), Division 1.9 - Chemical and Optical Sensing, Richard-Willstaedter-Str. 11, 12489 Berlin, Germany
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13
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Radunz S, Kraus W, Bischoff FA, Emmerling F, Tschiche HR, Resch-Genger U. Temperature- and Structure-Dependent Optical Properties and Photophysics of BODIPY Dyes. J Phys Chem A 2020; 124:1787-1797. [PMID: 32039600 DOI: 10.1021/acs.jpca.9b11859] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We report on the temperature- and structural-dependent optical properties and photophysics of a set of boron dipyrromethene (BODIPY) dyes with different substitution patterns of their meso-aryl subunit. Single-crystal X-ray diffraction analysis of the compounds enabled a classification of the dyes into a sterically hindered and a unhindered group. The steric hindrance refers to a blocked rotational motion of the aryl subunit around the bond connecting this moiety to the meso-position of the BODIPY core. The energy barriers related to this rotation were simulated by DFT calculations. As follows from the relatively low rotational barrier calculated to about 17 kcal/mol, a free rotation is only possible for sterically unhindered compounds. Rotational barriers of more than 40 kcal/mol determined for the sterically hindered compounds suggest an effective freezing of the rotational motion in these molecules. With the aid of temperature-dependent spectroscopic measurements, we could show that the ability to rotate directly affects the optical properties of our set of BODIPY dyes. This accounts for the strong temperature dependence of the fluorescence of the sterically unhindered compounds which show a drastic decrease in fluorescence quantum yield and a significant shortening in fluorescence lifetime upon heating. The optical properties of the sterically hindered compounds, however, are barely affected by temperature. Our results suggest a nonradiative deactivation of the first excited singlet state of the sterically unhindered compounds caused by a conical intersection of the potential energy surfaces of the ground and first excited state which is accessible by rotation of the meso-subunit. This is in good agreement with previously reported deactivation mechanisms. In addition, our results suggest the presence of a second nonradiative depopulation pathway of the first excited singlet state which is particularly relevant for the sterically hindered compounds.
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Affiliation(s)
- Sebastian Radunz
- Department 1 - Analytical Chemistry; Reference Materials, Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Str. 11, 12489 Berlin, Germany
| | - Werner Kraus
- Department 1 - Analytical Chemistry; Reference Materials, Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Str. 11, 12489 Berlin, Germany
| | - Florian A Bischoff
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany
| | - Franziska Emmerling
- Department 1 - Analytical Chemistry; Reference Materials, Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Str. 11, 12489 Berlin, Germany.,Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany
| | - Harald Rune Tschiche
- Department 7 - Chemicals and Product Safety, German Federal Institute for Risk Assessment (BfR), 10589 Berlin, Germany
| | - Ute Resch-Genger
- Department 1 - Analytical Chemistry; Reference Materials, Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Str. 11, 12489 Berlin, Germany
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14
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Affiliation(s)
- Benedetta Maria Squeo
- Istituto per lo Studio delle Macromolecole (ISMAC), Consiglio Nazionale delle Ricerche, Milano, Italy
| | - Mariacecilia Pasini
- Istituto per lo Studio delle Macromolecole (ISMAC), Consiglio Nazionale delle Ricerche, Milano, Italy
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15
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Descalzo AB, Ashokkumar P, Shen Z, Rurack K. On the Aggregation Behaviour and Spectroscopic Properties of Alkylated and Annelated Boron‐Dipyrromethene (BODIPY) Dyes in Aqueous Solution. CHEMPHOTOCHEM 2019. [DOI: 10.1002/cptc.201900235] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ana B. Descalzo
- Chemical and Optical Sensing DivisionBundesanstalt für Materialforschung und -prüfung (BAM) Richard-Willstätter-Straße 11 12489 Berlin Germany
- Present address: Dpmt. Organic Chemistry, Faculty of ChemistryComplutense University of Madrid (UCM) Av. Complutense, s/n 28040 Madrid Spain
| | - Pichandi Ashokkumar
- Chemical and Optical Sensing DivisionBundesanstalt für Materialforschung und -prüfung (BAM) Richard-Willstätter-Straße 11 12489 Berlin Germany
- Present address: Laboratoire de Bioimagerie et Pathologies, UMR 7021 CNRS Faculté de PharmacieUniversité de Strasbourg Strasbourg CS 60024 France
| | - Zhen Shen
- State Key Laboratory of Coordination Chemistry Nanjing National Laboratory of Microstructures and School of Chemistry and Chemical EngineeringNanjing University Nanjing 210046 China
| | - Knut Rurack
- Chemical and Optical Sensing DivisionBundesanstalt für Materialforschung und -prüfung (BAM) Richard-Willstätter-Straße 11 12489 Berlin Germany
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16
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Khurana B, Gierlich P, Meindl A, Gomes-da-Silva LC, Senge MO. Hydrogels: soft matters in photomedicine. Photochem Photobiol Sci 2019; 18:2613-2656. [PMID: 31460568 DOI: 10.1039/c9pp00221a] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Photodynamic therapy (PDT), a shining beacon in the realm of photomedicine, is a non-invasive technique that utilizes dye-based photosensitizers (PSs) in conjunction with light and oxygen to produce reactive oxygen species to combat malignant tissues and infectious microorganisms. Yet, for PDT to become a common, routine therapy, it is still necessary to overcome limitations such as photosensitizer solubility, long-term side effects (e.g., photosensitivity) and to develop safe, biocompatible and target-specific formulations. Polymer based drug delivery platforms are an effective strategy for the delivery of PSs for PDT applications. Among them, hydrogels and 3D polymer scaffolds with the ability to swell in aqueous media have been deeply investigated. Particularly, hydrogel-based formulations present real potential to fulfill all requirements of an ideal PDT platform by overcoming the solubility issues, while improving the selectivity and targeting drawbacks of the PSs alone. In this perspective, we summarize the use of hydrogels as carrier systems of PSs to enhance the effectiveness of PDT against infections and cancer. Their potential in environmental and biomedical applications, such as tissue engineering photoremediation and photochemistry, is also discussed.
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Affiliation(s)
- Bhavya Khurana
- Medicinal Chemistry, Trinity Translational Medicine Institute, Trinity Centre for Health Sciences, Trinity College Dublin, The University of Dublin, St James's Hospital, Dublin 8, Ireland.
| | - Piotr Gierlich
- Medicinal Chemistry, Trinity Translational Medicine Institute, Trinity Centre for Health Sciences, Trinity College Dublin, The University of Dublin, St James's Hospital, Dublin 8, Ireland. and CQC, Coimbra Chemistry Department, University of Coimbra, Coimbra, Portugal
| | - Alina Meindl
- Physik Department E20, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | | | - Mathias O Senge
- Medicinal Chemistry, Trinity Translational Medicine Institute, Trinity Centre for Health Sciences, Trinity College Dublin, The University of Dublin, St James's Hospital, Dublin 8, Ireland. and Physik Department E20, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany and Institute for Advanced Study (TUM-IAS), Technische Universität München, Lichtenberg-Str. 2a, 85748 Garching, Germany
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17
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Shipalova M, Bobrov A, Usoltsev S, Marfin Y, Rumyantsev E. Influence of structure and solvatation on photophysical characteristics of meso-substituted boron dipyrrins in solution and bulk hybrid materials. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.03.099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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18
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Radunz S, Andresen E, Würth C, Koerdt A, Tschiche HR, Resch-Genger U. Simple Self-Referenced Luminescent pH Sensors Based on Upconversion Nanocrystals and pH-Sensitive Fluorescent BODIPY Dyes. Anal Chem 2019; 91:7756-7764. [DOI: 10.1021/acs.analchem.9b01174] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Sebastian Radunz
- Division Biophotonics, BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Str. 11, 12489 Berlin, Germany
| | - Elina Andresen
- Division Biophotonics, BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Str. 11, 12489 Berlin, Germany
| | - Christian Würth
- Division Biophotonics, BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Str. 11, 12489 Berlin, Germany
| | - Andrea Koerdt
- Division Biophotonics, BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Str. 11, 12489 Berlin, Germany
| | - Harald Rune Tschiche
- Division Biophotonics, BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Str. 11, 12489 Berlin, Germany
- Department 7, BfR German Federal Institute for Risk Assessment, Max-Dohrn-Str. 8-10, 10589 Berlin, Germany
| | - Ute Resch-Genger
- Division Biophotonics, BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Str. 11, 12489 Berlin, Germany
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Staudinger C, Breininger J, Klimant I, Borisov SM. Near-infrared fluorescent aza-BODIPY dyes for sensing and imaging of pH from the neutral to highly alkaline range. Analyst 2019; 144:2393-2402. [PMID: 30801584 DOI: 10.1039/c9an00118b] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
New aza-BODIPY pH indicators with spectral properties modulated solely by photoinduced electron transfer (PET) are presented. The pH sensitive hydroxyl group is located in the meta-position of a phenyl substituent with respect to the aza-BODIPY core, which eliminates the conjugation to the chromophore. The new dyes show reversible "on"-"off" fluorescence response upon deprotonation of the receptor but no changes in the absorption spectrum, which is in contrast to state-of-the-art indicators of the aza-BODIPY family. This eliminates potential changes in the efficiency of the inner filter effect and Förster resonance energy transfer (FRET) and makes the new dyes suitable acceptors in light harvesting systems used for ratiometric pH imaging. The introduction of electron-withdrawing or electron-donating groups into the receptor results in a set of indicators suitable for measurements from physiological (pH 7) to very alkaline (pH 13) conditions. The new sensors are particularly promising for monitoring of pH changes in concrete, as was recently shown elsewhere.
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Affiliation(s)
- Christoph Staudinger
- Institute of Analytical Chemistry and Food Chemistry, Graz University of Technology, Stremayrgasse 9, 8010, Graz, Austria.
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Climent E, Hecht M, Witthuhn H, Gawlitza K, Rurack K. Mix-&-Read Determination of Mercury(II) at Trace Levels with Hybrid Mesoporous Silica Materials Incorporating Fluorescent Probes by a Simple Mix-&-Load Technique. ChemistryOpen 2018; 7:957-968. [PMID: 30534510 PMCID: PMC6280557 DOI: 10.1002/open.201800277] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Indexed: 11/11/2022] Open
Abstract
The synthesis, characterization, and application of mesoporous materials containing boron-dipyrromethene (BODIPY) moieties that allow the sensitive and selective detection of HgII in aqueous environments by fluorescence enhancement is reported. For this purpose, BODIPY dye I containing a thia-aza crown ether receptor as the fluorescent probe for the detection of HgII in aqueous environments is encapsulated into mesoporous materials to avoid self-quenching or aggregation in water. Determination of HgII is accomplished within a few seconds with high selectivity and sensitivity, reaching a limit of detection of 12 ppt. The determination of trace amounts of HgII in natural waters and in fish extracts is demonstrated by using our sensing material. The incorporation of the material into several μ-PAD strips yields a portable, cheap, quick, and easy-to-handle tool for trace HgII analysis in water.
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Affiliation(s)
- Estela Climent
- Department of Analytical Chemistry; Reference MaterialsBundesanstalt für Materialforschung und -prüfung (BAM)Richard-Willstätter-Str. 1112489BerlinGermany
| | - Mandy Hecht
- Department of Analytical Chemistry; Reference MaterialsBundesanstalt für Materialforschung und -prüfung (BAM)Richard-Willstätter-Str. 1112489BerlinGermany
- Current address: CodeCheck GmbHGneisenaustraße 11510961BerlinGermany
| | - Heike Witthuhn
- Department of Analytical Chemistry; Reference MaterialsBundesanstalt für Materialforschung und -prüfung (BAM)Richard-Willstätter-Str. 1112489BerlinGermany
| | - Kornelia Gawlitza
- Department of Analytical Chemistry; Reference MaterialsBundesanstalt für Materialforschung und -prüfung (BAM)Richard-Willstätter-Str. 1112489BerlinGermany
| | - Knut Rurack
- Department of Analytical Chemistry; Reference MaterialsBundesanstalt für Materialforschung und -prüfung (BAM)Richard-Willstätter-Str. 1112489BerlinGermany
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21
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Climent E, Hecht M, Witthuhn H, Gawlitza K, Rurack K. Mix-&-Read Determination of Mercury(II) at Trace Levels with Hybrid Mesoporous Silica Materials Incorporating Fluorescent Probes by a Simple Mix-&-Load Technique. ChemistryOpen 2018; 7:709-720. [PMID: 30214851 PMCID: PMC6129944 DOI: 10.1002/open.201800111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Indexed: 12/13/2022] Open
Abstract
The synthesis, characterization, and application of mesoporous materials containing boron-dipyrromethene (BODIPY) moieties that allow the sensitive and selective detection of HgII in aqueous environments by fluorescence enhancement is reported. For this purpose, BODIPY dye I containing a thia-aza crown ether receptor as the fluorescent probe for the detection of HgII in aqueous environments is encapsulated into mesoporous materials to avoid self-quenching or aggregation in water. Determination of HgII is accomplished within a few seconds with high selectivity and sensitivity, reaching a limit of detection of 12 ppt. The determination of trace amounts of HgII in natural waters and in fish extracts is demonstrated by using our sensing material. The incorporation of the material into several μ-PAD strips yields a portable, cheap, quick, and easy-to-handle tool for trace HgII analysis in water.
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Affiliation(s)
- Estela Climent
- Department of Analytical Chemistry; Reference MaterialsBundesanstalt für Materialforschung und -prüfung (BAM)Richard-Willstätter-Str. 1112489BerlinGermany
| | - Mandy Hecht
- Department of Analytical Chemistry; Reference MaterialsBundesanstalt für Materialforschung und -prüfung (BAM)Richard-Willstätter-Str. 1112489BerlinGermany
- Current address: CodeCheck GmbHGneisenaustraße 11510961BerlinGermany
| | - Heike Witthuhn
- Department of Analytical Chemistry; Reference MaterialsBundesanstalt für Materialforschung und -prüfung (BAM)Richard-Willstätter-Str. 1112489BerlinGermany
| | - Kornelia Gawlitza
- Department of Analytical Chemistry; Reference MaterialsBundesanstalt für Materialforschung und -prüfung (BAM)Richard-Willstätter-Str. 1112489BerlinGermany
| | - Knut Rurack
- Department of Analytical Chemistry; Reference MaterialsBundesanstalt für Materialforschung und -prüfung (BAM)Richard-Willstätter-Str. 1112489BerlinGermany
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22
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Mitra A, Bose S, Biswas S, Bandyopadhyay P, Sarkar A. Design, Synthesis and Photochemical Properties of a Phenalenone-Based pH Sensor: Switchable pH Sensing in Four Detectable Channels. Chempluschem 2018; 83:832-837. [PMID: 31950683 DOI: 10.1002/cplu.201800420] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Indexed: 11/10/2022]
Abstract
The synthesis and pH-sensing property of a novel phenalenone-based compound, 9-(4-hydroxyphenylamino)-1-oxo-phenalenone (HPAP), is reported. The newly synthesized compound is capable of functioning as a pH sensor in the region of pH 7 to 12. The sensor can be used as a colorimetric indicator in the transition from pH 10 to pH 11. The sensor is able to function in four detectable channels. All four channels (UV, emission, colorimetric/visible and photoluminescence) have been shown to be reversible, thus implying the reuse of this single-molecule sensor and indicator for several experiments. Mechanistic investigations have been performed by UV, NMR and DFT studies which indicate that a photoinduced electron transfer (PET) based mechanism could be operative. Straightforward and cost-effective application of the sensor in thin-layer chromatography has also been established.
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Affiliation(s)
- Amritaa Mitra
- Department of Chemistry, University of North Bengal, Raja Rammohunpur, Siliguri 734013, West Bengal, India
| | - Suranjana Bose
- Department of Chemistry, University of North Bengal, Raja Rammohunpur, Siliguri 734013, West Bengal, India
| | - Sachidulal Biswas
- Department of Chemistry, University of North Bengal, Raja Rammohunpur, Siliguri 734013, West Bengal, India
| | - Pinaki Bandyopadhyay
- Department of Chemistry, University of North Bengal, Raja Rammohunpur, Siliguri 734013, West Bengal, India
| | - Arindam Sarkar
- India Innovation Research Centre, 465 Patparganj Industrial Area, Delhi, 110092, India
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23
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Kenney RM, Boyce MW, Whitman NA, Kromhout BP, Lockett MR. A pH-Sensing Optode for Mapping Spatiotemporal Gradients in 3D Paper-Based Cell Cultures. Anal Chem 2018; 90:2376-2383. [PMID: 29323486 PMCID: PMC6168333 DOI: 10.1021/acs.analchem.7b05015] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Paper-based cultures are an emerging platform for preparing 3D tissue-like structures. Chemical gradients can be imposed upon these cultures, generating microenvironments similar to those found in poorly vascularized tumors. There is increasing evidence that the tumor microenvironment is responsible for promoting drug resistance and increased invasiveness. Acidosis, or the acidification of the extracellular space, is particularly important in promoting these aggressive cancer phenotypes. To better understand how cells respond to acidosis there is a need for 3D culture platforms that not only model relevant disease states but also contain sensors capable of quantifying small molecules in the extracellular environment. In this work, we describe pH-sensing optodes that are capable of generating high spatial and temporal resolution maps of pH gradients in paper-based cultures. This sensor was fabricated by suspending microparticles containing pH-sensitive (fluorescein) and pH-insensitive (diphenylanthracene) dyes in a polyurethane hydrogel, which was then coated onto a transparent film. The pH-sensing films have a fast response time, are reversible, stable in long-term culture environments, have minimal photobleaching, and are not cytotoxic. These films have a pKa of 7.61 ± 0.04 and are sensitive in the pH range corresponding to normal and tumorigenic tissues. With these optodes, we measured the spatiotemporal evolution of pH gradients in paper-based tumor models.
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Affiliation(s)
- Rachael M. Kenney
- Department of Chemistry, University of North Carolina at Chapel Hill, 125 South Road, Chapel Hill, North Carolina 27599-3290, United States
| | - Matthew W. Boyce
- Department of Chemistry, University of North Carolina at Chapel Hill, 125 South Road, Chapel Hill, North Carolina 27599-3290, United States
| | - Nathan A. Whitman
- Department of Chemistry, University of North Carolina at Chapel Hill, 125 South Road, Chapel Hill, North Carolina 27599-3290, United States
| | - Brenden P. Kromhout
- CData Software Inc., 101 Europa Drive #110, Chapel Hill, North Carolina 27517, United States
| | - Matthew R. Lockett
- Department of Chemistry, University of North Carolina at Chapel Hill, 125 South Road, Chapel Hill, North Carolina 27599-3290, United States
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, 450 West Drive, Chapel Hill, North Carolina 27599-7295, United States
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24
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Prasannan D, Arunkumar C. A “turn-on-and-off” pH sensitive BODIPY fluorescent probe for imaging E. coli cells. NEW J CHEM 2018. [DOI: 10.1039/c7nj04313a] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Highly selective fluorescent BODIPY probes towards H+ ions displayed good photostability and reversibility and the utility of acid sensitive behavior to visualize extreme acidity in E. coli cells is also demonstrated.
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Affiliation(s)
- Dijo Prasannan
- Bioinorganic Materials Research Laboratory, Department of Chemistry, National Institute of Technology Calicut
- Calicut-673 601
- India
| | - Chellaiah Arunkumar
- Bioinorganic Materials Research Laboratory, Department of Chemistry, National Institute of Technology Calicut
- Calicut-673 601
- India
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25
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Gotor R, Ashokkumar P, Hecht M, Keil K, Rurack K. Optical pH Sensor Covering the Range from pH 0-14 Compatible with Mobile-Device Readout and Based on a Set of Rationally Designed Indicator Dyes. Anal Chem 2017; 89:8437-8444. [PMID: 28696681 DOI: 10.1021/acs.analchem.7b01903] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
In this work, a family of pH-responsive fluorescent probes has been designed in a rational manner with the aid of quantum chemistry tools, covering the entire pH range from 0-14. Relying on the boron-dipyrromethene (BODIPY) core, all the probes as well as selected reference dyes display very similar spectroscopic properties with ON-OFF fluorescence switching responses, facilitating optical readout in simple devices used for detection and analysis. Embedding of the probes and reference dyes into hydrogel spots on a plastic strip yielded a test strip that reversibly indicates pH with a considerably small uncertainty of ∼0.1 pH units. These strips are not only reusable but, combined with a 3D-printed case that can be attached to a smartphone, the USB port of which drives the integrated LED used for excitation, allows for autonomous operation in on-site or in-the-field applications; the developed Android application software ("app") further simplifies operation for unskilled users.
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Affiliation(s)
- Raúl Gotor
- Chemical and Optical Sensing Division, Bundesanstalt für Materialforschung und -prüfung (BAM) , Richard-Willstätter-Strasse 11, 12489 Berlin, Germany
| | - Pichandi Ashokkumar
- Chemical and Optical Sensing Division, Bundesanstalt für Materialforschung und -prüfung (BAM) , Richard-Willstätter-Strasse 11, 12489 Berlin, Germany
| | - Mandy Hecht
- Chemical and Optical Sensing Division, Bundesanstalt für Materialforschung und -prüfung (BAM) , Richard-Willstätter-Strasse 11, 12489 Berlin, Germany
| | - Karin Keil
- Chemical and Optical Sensing Division, Bundesanstalt für Materialforschung und -prüfung (BAM) , Richard-Willstätter-Strasse 11, 12489 Berlin, Germany
| | - Knut Rurack
- Chemical and Optical Sensing Division, Bundesanstalt für Materialforschung und -prüfung (BAM) , Richard-Willstätter-Strasse 11, 12489 Berlin, Germany
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26
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Belali S, Emandi G, Cafolla AA, O'Connell B, Haffner B, Möbius ME, Karimi A, Senge MO. Water-soluble, neutral 3,5-diformyl-BODIPY with extended fluorescence lifetime in a self-healable chitosan hydrogel. Photochem Photobiol Sci 2017; 16:1700-1708. [DOI: 10.1039/c7pp00316a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
3,5-Diformyl-BODIPY cross-linked chitosan-based hydrogels exhibit fluorescence resonance energy transfer (FRET) dynamics, water solubility, self-healing ability and good values of BODIPY fluorescence lifetimes.
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Affiliation(s)
- Simin Belali
- School of Chemistry
- SFI Tetrapyrrole Laboratory
- School of Chemistry
- Trinity Biomedical Sciences Institute
- Trinity College Dublin
| | - Ganapathi Emandi
- School of Chemistry
- SFI Tetrapyrrole Laboratory
- School of Chemistry
- Trinity Biomedical Sciences Institute
- Trinity College Dublin
| | | | | | - Benjamin Haffner
- Sami Nasr Institute of Advanced Materials (SNIAM)
- School of Physics
- Trinity College Dublin
- The University of Dublin
- Dublin 2
| | - Matthias E. Möbius
- Sami Nasr Institute of Advanced Materials (SNIAM)
- School of Physics
- Trinity College Dublin
- The University of Dublin
- Dublin 2
| | - Alireza Karimi
- Department of Chemistry
- Faculty of Science
- Arak University
- Arak 38156-8-8349
- Iran
| | - Mathias O. Senge
- School of Chemistry
- SFI Tetrapyrrole Laboratory
- School of Chemistry
- Trinity Biomedical Sciences Institute
- Trinity College Dublin
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27
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Opel J, Hecht M, Rurack K, Eiblmeier J, Kunz W, Cölfen H, Kellermeier M. Probing local pH-based precipitation processes in self-assembled silica-carbonate hybrid materials. NANOSCALE 2015; 7:17434-17440. [PMID: 26439927 DOI: 10.1039/c5nr05399d] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Crystallisation of barium carbonate in the presence of silica can lead to the spontaneous assembly of highly complex superstructures, consisting of uniform and largely co-oriented BaCO3 nanocrystals that are interspersed by a matrix of amorphous silica. The formation of these biomimetic architectures (so-called silica biomorphs) is thought to be driven by a dynamic interplay between the components, in which subtle changes of conditions trigger ordered mineralisation at the nanoscale. In particular, it has been proposed that local pH gradients at growing fronts play a crucial role in the process of morphogenesis. In the present work, we have used a special pH-sensitive fluorescent dye to directly trace these presumed local fluctuations by means of confocal laser scanning microscopy. Our data demonstrate the existence of an active region near the growth front, where the pH is locally decreased with respect to the alkaline bulk solution on a length scale of few microns. This observation provides fundamental and, for the first time, direct experimental support for the current picture of the mechanism underlying the formation of these peculiar materials. On the other hand, the absence of any temporal oscillations in the local pH - another key feature of the envisaged mechanism - challenges the notion of autocatalytic phenomena in such systems and raises new questions about the actual role of silica as an additive in the crystallisation process.
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Affiliation(s)
- Julian Opel
- Physical Chemistry, University of Konstanz, Universitätsstrasse 10, D-78464 Konstanz, Germany.
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28
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Zhang L, Zou LY, Guo JF, Wang D, Ren AM. A theoretical study of a series of novel two-photon nitric oxide (NO) fluorescent probes based on BODIPY. NEW J CHEM 2015. [DOI: 10.1039/c5nj01023c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The PET probing mechanism and intrinsic two-photon absorption properties of the studied molecules are rationally explained.
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Affiliation(s)
- Li Zhang
- State Key Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130061
- People's Republic of China
| | - Lu-Yi Zou
- State Key Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130061
- People's Republic of China
| | - Jing-Fu Guo
- School of Physics
- Northeast Normal University
- P. R. China
| | - Dan Wang
- State Key Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130061
- People's Republic of China
| | - Ai-Min Ren
- State Key Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130061
- People's Republic of China
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29
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Application of curcumin nanoparticles in a lab-on-paper device as a simple and green pH probe. Talanta 2015; 131:136-41. [DOI: 10.1016/j.talanta.2014.07.063] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 07/20/2014] [Accepted: 07/21/2014] [Indexed: 12/19/2022]
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30
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Thottiparambil A, Anil Kumar PR, Chakkumkumarath L. Styrylcyanine-based ratiometric and tunable fluorescent pH sensors. RSC Adv 2014. [DOI: 10.1039/c4ra10959g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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31
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Palakollu V, Kanvah S. α-Cyanostilbene based fluorophores: aggregation-induced enhanced emission, solvatochromism and the pH effect. NEW J CHEM 2014. [DOI: 10.1039/c4nj01103a] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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32
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Ashokkumar P, Weißhoff H, Kraus W, Rurack K. Test-Strip-Based Fluorometric Detection of Fluoride in Aqueous Media with a BODIPY-Linked Hydrogen-Bonding Receptor. Angew Chem Int Ed Engl 2014; 53:2225-9. [DOI: 10.1002/anie.201307848] [Citation(s) in RCA: 122] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 10/21/2013] [Indexed: 02/01/2023]
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33
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Ashokkumar P, Weißhoff H, Kraus W, Rurack K. Fluorometrischer Nachweis von Fluorid in wässriger Lösung mittels Teststreifen und einem BODIPY-Wasserstoffbrückenrezeptor-Konjugat. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201307848] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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34
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Nano A, Retailleau P, Hagon JP, Harriman A, Ziessel R. A hybrid bis(amino-styryl) substituted Bodipy dye and its conjugate diacid: synthesis, structure, spectroscopy and quantum chemical calculations. Phys Chem Chem Phys 2014; 16:10187-98. [DOI: 10.1039/c3cp55021d] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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35
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Shellaiah M, Wu YH, Lin HC. Simple pyridyl-salicylimine-based fluorescence "turn-on" sensors for distinct detections of Zn2+, Al3+ and OH- ions in mixed aqueous media. Analyst 2013; 138:2931-42. [PMID: 23531941 DOI: 10.1039/c3an36840h] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Simple pyridyl-salicylimine derivatives (F1, F2 and F3) are reported for the first time as fluorescence "turn-on" sensors for distinct detections of Zn(2+), Al(3+) and OH(-) ions in mixed-aqueous media CH3CN/H2O with volume ratios of 6/4 and 3/7 (at pH = 7 and 25 °C) via internal charge transfer (ICT), chelation enhanced fluorescence (CHEF), and deprotonation mechanisms. F1 and F2 show diverse turn-on sensing applications to Zn(2+), Al(3+) and OH(-) ions, but F3 exhibited the fluorescence turn-on sensing to Al(3+) and OH(-) ions in CH3CN/H2O (6/4; vol/vol). F1+Zn(2+) and F2+Zn(2+) complexes revealed the reversibilities and ratiometric displacements of Zn(2+) with ethylene diamine tetra acetic acid (EDTA) and Al(3+) ions, respectively, in CH3CN/H2O (6/4; vol/vol). On the other hand, F1, F2 and F3 in CH3CN/H2O (3/7; vol/vol) showed sensitivities only to Al(3+) ions but negligible selectivities to OH(-) ions. Stoichiometry of all sensor complexes were calculated as 1 : 1 by job's plots based on UV/Vis and PL titrations. The complex formation and binding sites of all sensor materials were well characterized by (1)H, (13)C NMR, and mass (FAB) spectral analysis. Detection limits were calculated from standard deviations and linear fitting calculations. The association constant (log K(a)) values of sensor complexes were evaluated from the fluorescence binding isotherms. The fluorescence decay constant (τ) values were estimated from time resolved fluorescence studies. Time, temperature, pH and solvent concentration effects towards sensor responses were fully investigated in this report.
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Affiliation(s)
- Muthaiah Shellaiah
- Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu 30049, Taiwan (ROC)
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36
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Hecht M, Fischer T, Dietrich P, Kraus W, Descalzo AB, Unger WES, Rurack K. Fluorinated Boron-Dipyrromethene (BODIPY) Dyes: Bright and Versatile Probes for Surface Analysis. ChemistryOpen 2013; 2:25-38. [PMID: 24551526 PMCID: PMC3594589 DOI: 10.1002/open.201200039] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Indexed: 12/22/2022] Open
Abstract
A family of bright boron-dipyrromethene-type fluorophores with a high number of fluorine atoms (F-BODIPYs) has been developed and characterized by X-ray crystallography and optical spectroscopy. The introduction of 3,5-bis(trifluoromethyl)phenyl and pentafluorophenyl moieties significantly enhances the photostability of such dyes, yielding for instance photostable near-infrared (NIR) fluorophores that show emission maxima>750 nm, when the BODIPY's π system is extended with two (dimethylamino)styryl and (dimethylamino)naphthastyryl moieties, or green-emitting BODIPYs with fluorescence quantum yields of unity. When equipped with a suitable group that selectively reacts for instance with amines, F-BODIPYs can be used as potent dual labels for the quantification of primary amino groups on surfaces by X-ray photoelectron spectroscopy (XPS) and fluorescence, two powerful yet complementary tools for the analysis of organic surface functional groups. The advantage of reactive F-BODIPYs is that they allow a fast and non-destructive mapping of the labelled supports with conventional fluorescence scanners and a subsequent quantification of selected areas of the same sample by the potentially traceable XPS technique. The performance is exemplarily shown here for the assessment of the amino group density on SiO2 supports, one of the most common reactive silica supports, in particular, for standard microarray applications.
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Affiliation(s)
- Mandy Hecht
- Division 1.9 Sensor Materials, BAM Federal Institute for Materials Research and Testing Richard-Willstätter-Str. 11, 12489 Berlin (Germany) E-mail:
| | - Tobias Fischer
- Division 1.9 Sensor Materials, BAM Federal Institute for Materials Research and Testing Richard-Willstätter-Str. 11, 12489 Berlin (Germany) E-mail:
| | - Paul Dietrich
- Division 6.8 Surface Analysis and Interfacial Chemistry, BAM Federal Institute for Materials Research and Testing Unter den Eichen 44-46, 12203 Berlin (Germany)
| | - Werner Kraus
- Division 1.3 Structural Analysis, BAM Federal Institute for Materials Research and Testing Richard-Willstätter-Str. 11, 12489 Berlin (Germany)
| | - Ana B Descalzo
- Division 1.9 Sensor Materials, BAM Federal Institute for Materials Research and Testing Richard-Willstätter-Str. 11, 12489 Berlin (Germany) E-mail:
| | - Wolfgang E S Unger
- Division 6.8 Surface Analysis and Interfacial Chemistry, BAM Federal Institute for Materials Research and Testing Unter den Eichen 44-46, 12203 Berlin (Germany)
| | - Knut Rurack
- Division 1.9 Sensor Materials, BAM Federal Institute for Materials Research and Testing Richard-Willstätter-Str. 11, 12489 Berlin (Germany) E-mail:
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