1
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Wu R, Tian M, Shu C, Zhou C, Guan W. Determination of the critical micelle concentration of surfactants using fluorescence strategies. SOFT MATTER 2022; 18:8920-8930. [PMID: 36440607 DOI: 10.1039/d2sm01320g] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The increasing importance of surfactants in various fields has led to growing interest in the comprehensive characterization of surfactants. The critical micelle concentration (CMC), the most fundamental property of surfactants, is a parameter that must be measured. In particular, with the continuous expansion of the molecular structure of surfactants, numerous novel amphiphilic molecules have been developed that are capable of forming ordered aggregates in various solvent systems. Fluorescence spectroscopy, based on the differences in fluorescence intensity and wavelength of the fluorescent probe in the solvent phase and micellar phase, can sensitively detect the CMC of surfactants. This review aims to summarize the various fluorescence methods used to determine the CMC, including aggregation-induced emission (AIE), excimer formation, intramolecular charge transfer (ICT), and other miscellaneous strategies. The difficulties and limitations in the CMC determination process are also described. Further suggestions are provided to guide the existing fluorescence probes and the corresponding fluorescence methods to detect critical aggregation concentrations of amphiphilic molecules.
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Affiliation(s)
- Riliga Wu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Mingce Tian
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Chang Shu
- Affiliated Eye Hospital of Wenzhou Medical University, Wenzhou 325027, China.
| | - Chengcheng Zhou
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Weijiang Guan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
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2
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Polymer based ON-OFF-ON fluorescent logic gate: Synthesis, characterization and understanding. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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3
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Yan H, Liu S, Yang S, Ren W, Shangguan J, Lv J, Zhang M, Tang J, Zhao Y. In situ construction of a cobalt oxyhydroxide loaded pyrene-based fluorescent organic nanoprobe for bioimaging of endogenous ascorbic acid in living cells. NEW J CHEM 2022. [DOI: 10.1039/d2nj02305a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel in situ strategy to fabricate CoOOH nanoflake-loaded pyrene-based FONs (denoted as PyFONs@CoOOH) as proof-of-concept of a sensing platform for direct bioimaging of endogenous AA in living cells.
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Affiliation(s)
- Huijuan Yan
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, 453003, P. R. China
| | - Shuanghui Liu
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, 453003, P. R. China
| | - Shuo Yang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, 453003, P. R. China
| | - Wu Ren
- School of Medical Engineering, Xinxiang Neurosense and Control Engineering Technology Research Center, Xinxiang Key Lab of Biomedical Information Research, Xinxiang Medical University, Xinxiang, Henan, 453003, P. R. China
| | - Jingfang Shangguan
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, 453003, P. R. China
| | - Jieli Lv
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, 453003, P. R. China
| | - Mengzhen Zhang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, 453003, P. R. China
| | - Juan Tang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, 453003, P. R. China
| | - Ying Zhao
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, 453003, P. R. China
- Xinxiang Key Laboratory of Clinical Psychopharmacology, Xinxiang Medical University, Xinxiang, 453003, China
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4
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Yoshii T, Umemoto D, Yamamoto M, Kuwahara Y, Nishihara H, Mori K, Kyotani T, Yamashita H. Pyrene‐Thiol‐modified Pd Nanoparticles on Carbon Support: Kinetic Control by Steric Hinderance and Improved Stability by the Catalyst‐Support Interaction. ChemCatChem 2020. [DOI: 10.1002/cctc.202000987] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Takeharu Yoshii
- Division of Materials and Manufacturing Science Graduate School of Engineering Osaka University 2-1 Yamada-oka Suita Osaka 565-0871 Japan
| | - Daiki Umemoto
- Division of Materials and Manufacturing Science Graduate School of Engineering Osaka University 2-1 Yamada-oka Suita Osaka 565-0871 Japan
| | - Masanori Yamamoto
- Institute of Multidisciplinary Research for Advanced Materials Tohoku University 2-1-1 Katahira, Aoba-ku Sendai Miyagi 980-8577 Japan
| | - Yasutaka Kuwahara
- Division of Materials and Manufacturing Science Graduate School of Engineering Osaka University 2-1 Yamada-oka Suita Osaka 565-0871 Japan
- Elements Strategy Initiative for Catalysts Batteries (ESICB) Kyoto University Katsura Kyoto 615-8520 Japan
- JST PRESTO 4-1-8 Honcho Kawaguchi Saitama 332-0012 Japan
| | - Hirotomo Nishihara
- Institute of Multidisciplinary Research for Advanced Materials Tohoku University 2-1-1 Katahira, Aoba-ku Sendai Miyagi 980-8577 Japan
| | - Kohsuke Mori
- Division of Materials and Manufacturing Science Graduate School of Engineering Osaka University 2-1 Yamada-oka Suita Osaka 565-0871 Japan
- Elements Strategy Initiative for Catalysts Batteries (ESICB) Kyoto University Katsura Kyoto 615-8520 Japan
| | - Takashi Kyotani
- Institute of Multidisciplinary Research for Advanced Materials Tohoku University 2-1-1 Katahira, Aoba-ku Sendai Miyagi 980-8577 Japan
| | - Hiromi Yamashita
- Division of Materials and Manufacturing Science Graduate School of Engineering Osaka University 2-1 Yamada-oka Suita Osaka 565-0871 Japan
- Elements Strategy Initiative for Catalysts Batteries (ESICB) Kyoto University Katsura Kyoto 615-8520 Japan
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5
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Stiegler LMS, Luchs T, Hirsch A. Shell-by-Shell Functionalization of Inorganic Nanoparticles. Chemistry 2020; 26:8483-8498. [PMID: 32167598 PMCID: PMC7687223 DOI: 10.1002/chem.202000195] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 03/11/2020] [Indexed: 12/31/2022]
Abstract
The current state of the hierarchical chemical functionalization of inorganic nanoparticles (NPs) by shell-by-shell (SbS)-assembly of organic layers around the NP cores is summarized. This supramolecular functionalization concept is based on two steps: 1) the covalent grafting of a first ligand-shell consisting of, for example, long chain phosphonic acids and 2) the noncovalent interdigitation of amphiphiles forming the second ligand shell. The latter process is guaranteed predominantly by solvophobic interactions. These highly order organic-inorganic hybrid architectures are currently an emerging field at the interface of synthetic chemistry, nanotechnology, and materials science. The doubly functionalized NPs display tunable materials properties, such a controlled dispersibility and stability in various solvents, highly efficient trapping of guest molecules in between the ligand shells (water cleaning) as well as compartmentalization and modification of electronic interactions between photoactive components integrated in such complex nano-architectures. Such SbS-functionalized NPs have a high potential as water-cleaning materials and also some first prototype applications as biomedicinal therapeutics have been presented.
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Affiliation(s)
- Lisa M. S. Stiegler
- Department of Chemistry & PharmacyFriedrich-Alexander-Universität Erlangen-NürnbergNikolaus-Fiebiger-Straße 1091058ErlangenGermany
| | - Tobias Luchs
- Department of Chemistry & PharmacyFriedrich-Alexander-Universität Erlangen-NürnbergNikolaus-Fiebiger-Straße 1091058ErlangenGermany
| | - Andreas Hirsch
- Department of Chemistry & PharmacyFriedrich-Alexander-Universität Erlangen-NürnbergNikolaus-Fiebiger-Straße 1091058ErlangenGermany
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6
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Stiegler LMS, Hirsch A. Electronic Communication in Confined Space Coronas of Shell-by-Shell Structured Al 2 O 3 Nanoparticle Hybrids Containing Two Layers of Functional Organic Ligands. Chemistry 2019; 25:11864-11875. [PMID: 31222816 DOI: 10.1002/chem.201901052] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 06/12/2019] [Indexed: 12/12/2022]
Abstract
A first series of examples for confined space interactions of electron-rich and electron-poor molecules organized in an internal corona of shell-by-shell (SbS)-structured Al2 O3 nanoparticle (NP) hybrids is reported. The assembly concept of the corresponding hierarchical architectures relies on both covalent grafting of phosphonic acids on the NPs surface (SAMs formation; SAM=self-assembled monolayer) and exohedral interdigitation of orthogonal amphiphiles as the second ligand layer driven by solvophobic interactions. The electronic communication between the chromophores of different electron demand, such as pyrenes, perylenediimides (PDIs; with and without pyridinium bromide headgroups) and fullerenes was promoted at the layer interface. In this work, it is demonstrated that the efficient construction principle of the bilayer hybrids assembled around the electronically "innocent" Al2 O3 core is robust enough to achieve control over electronic communication between electron-donors and -acceptors in the interlayer region. The electronic interactions between the electron-accepting and electron-donating moieties approaching each other at the layer interface were monitored by fluorescence measurements.
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Affiliation(s)
- Lisa M S Stiegler
- Chair of Organic Chemistry II, Department of Chemistry & Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Strasse 10, 91058, Erlangen, Germany
| | - Andreas Hirsch
- Chair of Organic Chemistry II, Department of Chemistry & Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Strasse 10, 91058, Erlangen, Germany
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7
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Lone MS, Afzal S, Nazir N, Dutta R, Dar AA. Excimer based FRET between non-FRET pair flourophores aided by the aromatic moiety of anionic surfactants: An experimental observation. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.11.118] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Colloidal photoemissive nanoparticles. CHEMTEXTS 2018. [DOI: 10.1007/s40828-018-0063-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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9
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Duan Z, Zhang C, Qiao Y, Liu F, Wang D, Wu M, Wang K, Lv X, Kong X, Wang H. Polyhydric polymer-functionalized fluorescent probe with enhanced aqueous solubility and specific ion recognition: A test strips-based fluorimetric strategy for the rapid and visual detection of Fe 3+ ions. Talanta 2017; 170:306-313. [DOI: 10.1016/j.talanta.2017.04.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 03/31/2017] [Accepted: 04/09/2017] [Indexed: 12/14/2022]
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10
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Wang X, Liu L, Zhu S, Peng J, Li L. Preparation of exciplex-based fluorescent organic nanoparticles and their application in cell imaging. RSC Adv 2017. [DOI: 10.1039/c7ra08142a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Novel organic fluorescent nanoparticles based on exciplex were prepared and have been successfully applied in live cell imaging.
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Affiliation(s)
- Xiaoyu Wang
- State Key Laboratory for Advanced Metals and Materials
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Lu Liu
- State Key Laboratory for Advanced Metals and Materials
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Shuxian Zhu
- State Key Laboratory for Advanced Metals and Materials
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Jinghong Peng
- State Key Laboratory for Advanced Metals and Materials
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Lidong Li
- State Key Laboratory for Advanced Metals and Materials
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
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11
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Abstract
Photoactive nanoparticles are smart systems that exhibit unique optical properties. In general, their intrinsic properties are size dependent. The degree and type of response to size are both related to their composition. Nanoparticles usually require to be capped with organic ligands in order to be dispersible in an aqueous or organic media, thus leading to nanoparticle colloidal dispersions and enhancing the processability of the material. The organic ligand also plays a key role in their preparation. In addition, the high surface-to-volume ratio of the nanoparticles combined with the affinity of the ligands for the nanoparticle surface can be used to place a large number of functional molecules at their periphery. The purpose of this chapter is to understand the synergism between nanoparticles and organic ligands with regard to their preparation, performance, and applicability.
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12
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A Pyrene@Micelle Sensor for Fluorescent Oxygen Sensing. BIOMED RESEARCH INTERNATIONAL 2015; 2015:245031. [PMID: 26539471 PMCID: PMC4619751 DOI: 10.1155/2015/245031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 04/28/2015] [Indexed: 11/18/2022]
Abstract
For most fluorescent oxygen sensors developed today, their fabrication process is either time-consuming or needs specialized knowledge. In this work, a robust fluorescent oxygen sensor is facilely constructed by dissolving pyrene molecules into CTAB aqueous solution. The as-prepared pyrene@micelle sensors have submicron-sized diameter, and the concentration of utilized pyrene can be reduced as low as 0.8 mM but still can exhibit dominant excimer emission. The excimer fluorescence is sensitive to dissolved oxygen in both intensity and lifetime, and the respective Stern-Volmer plot follows a nonlinear behavior justified by a two-site model. Because of the merits of large Stokes shift (~140 nm), easy fabrication, and robustness, the pyrene@micelle sensors are very attractive for practical determination of oxygen.
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13
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Sun X, Wang Y, Lei Y. Fluorescence based explosive detection: from mechanisms to sensory materials. Chem Soc Rev 2015; 44:8019-61. [PMID: 26335504 DOI: 10.1039/c5cs00496a] [Citation(s) in RCA: 620] [Impact Index Per Article: 68.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The detection of explosives is one of the current pressing concerns in global security. In the past few decades, a large number of emissive sensing materials have been developed for the detection of explosives in vapor, solution, and solid states through fluorescence methods. In recent years, great efforts have been devoted to develop new fluorescent materials with various sensing mechanisms for detecting explosives in order to achieve super-sensitivity, ultra-selectivity, as well as fast response time. This review article starts with a brief introduction on various sensing mechanisms for fluorescence based explosive detection, and then summarizes in an exhaustive and systematic way the state-of-the-art of fluorescent materials for explosive detection with a focus on the research in the recent 5 years. A wide range of fluorescent materials, such as conjugated polymers, small fluorophores, supramolecular systems, bio-inspired materials and aggregation induced emission-active materials, and their sensing performance and sensing mechanism are the centerpiece of this review. Finally, conclusions and future outlook are presented and discussed.
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Affiliation(s)
- Xiangcheng Sun
- Department of Chemical and Biomolecular Engineering, University of Connecticut, 191 Auditorium Road, Unit 3222, Storrs, CT 06269, USA.
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14
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Sun X, Liu Y, Shaw G, Carrier A, Dey S, Zhao J, Lei Y. Fundamental Study of Electrospun Pyrene-Polyethersulfone Nanofibers Using Mixed Solvents for Sensitive and Selective Explosives Detection in Aqueous Solution. ACS APPLIED MATERIALS & INTERFACES 2015; 7:13189-97. [PMID: 26030223 DOI: 10.1021/acsami.5b03655] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Fluorescent pyrene-polyethersulfone (Py-PES) nanofibers were prepared through electrospinning technique using mixed solvents. The effects of mixed solvent ratio and polymer/fluorophore concentrations on electrospun nanofiber's morphology and its sensing performance were systematically investigated and optimized. The Py-PES nanofibers prepared under optimized conditions were further applied for highly sensitive detection of explosives, such as picric acid (PA), 2,4,6-trinitrotoluene (TNT), 2,4-dinitrotoluene (DNT), and 1,3,5-trinitroperhydro-1,3,5-triazine (RDX) in aqueous phase with limits of detection (S/N = 3) of 23, 160, 400, and 980 nM, respectively. The Stern-Volmer (S-V) plot for Py excimer fluorescence quenching by PA shows two linear regions at low (0-1 μM) and high concentration range (>1 μM) with a quenching constant of 1.263 × 10(6) M(-1) and 5.08 × 10(4) M(-1), respectively. On the contrary, S-V plots for Py excimer fluorescence quenching by TNT, DNT, and RDX display an overall linearity in the entire tested concentration range. The fluorescence quenching by PA can be attributed to the fact that both photoinduced electron transfer and energy transfer are involved in the quenching process. In addition, pyrene monomer fluorescence is also quenched and exhibits different trends for different explosives. Fluorescence lifetime studies have revealed a dominant static quenching mechanism of the current fluorescent sensors for explosives in aqueous solution. Selectivity study demonstrates that common interferents have an insignificant effect on the emission intensity of the fluorescent nanofibers in aqueous phase, while reusability study indicates that the fluorescent nanofibers can be regenerated. Spiked real river water sample was also tested, and negligible matrix effect on explosives detection was observed. This research provides new insights into the development of fluorescent explosive sensor with high performance.
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Affiliation(s)
- Xiangcheng Sun
- †Department of Chemical and Biomoleclular Engineering, and ‡Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Yixin Liu
- †Department of Chemical and Biomoleclular Engineering, and ‡Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - George Shaw
- †Department of Chemical and Biomoleclular Engineering, and ‡Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Andrew Carrier
- †Department of Chemical and Biomoleclular Engineering, and ‡Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Swayandipta Dey
- †Department of Chemical and Biomoleclular Engineering, and ‡Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Jing Zhao
- †Department of Chemical and Biomoleclular Engineering, and ‡Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Yu Lei
- †Department of Chemical and Biomoleclular Engineering, and ‡Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
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15
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Singla P, Kaur P, Singh K. Discrimination in excimer emission quenching of pyrene by nitroaromatics. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.03.053] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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16
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Gonzalez-Carrero S, Agudelo-Morales C, Guardia MDL, Galian RE, Pérez-Prieto J. Three independent channel nanohybrids as fluorescent probes. RSC Adv 2015. [DOI: 10.1039/c5ra18028g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Pyrene-capped CdSe/ZnS nanohybrids permit a simple and rapid quantification of trinitrotoluene in the presence of interferents of the same chemical family.
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Affiliation(s)
| | - Carlos Agudelo-Morales
- Instituto de Ciencia Molecular (ICmol)
- Universidad de Valencia
- Catedrático José Beltrán 2
- Paterna
- Spain
| | | | - Raquel E. Galian
- Instituto de Ciencia Molecular (ICmol)
- Universidad de Valencia
- Catedrático José Beltrán 2
- Paterna
- Spain
| | - Julia Pérez-Prieto
- Instituto de Ciencia Molecular (ICmol)
- Universidad de Valencia
- Catedrático José Beltrán 2
- Paterna
- Spain
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17
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Sun X, Qi Y, Liu H, Peng J, Liu K, Fang Y. "Yin and Yang" tuned fluorescence sensing behavior of branched 1,4-bis(phenylethynyl)benzene. ACS APPLIED MATERIALS & INTERFACES 2014; 6:20016-20024. [PMID: 25313531 DOI: 10.1021/am505588x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Achieving high sensing performance and good photostability of fluorescent films based on adlayer construction represents a significant challenge in the area of functional fluorescent film research. A solution may be offered by "Yin and Yang", a balance idea from Chinese philosophy, for the design of a fluorophore and the relevant assembly. Accordingly, a 1,4-bis(phenylethynyl)benzene (BPEB) derivative (C2) with two cholesteryl residues in the side chains and two glucono units in the head and tail positions was designed and synthesized. As a control, compound C1 was also prepared. The only difference between C1 and C2 is that the hydroxyl groups in the glucono residues of C1 are fully acetylated. Studies of the fluorescence behaviors of the two compounds in solution revealed that both the profile and the intensity of the fluorescence emission of the compounds, in particular C2, are dependent on their concentration and on the nature of solvents employed. Presence of HCl also alters the emission of the compounds in solution. On the basis of the studies, three fluorescent films were prepared, and their sensing performances to HCl in vapor state were studied. Specifically, Film 1 and Film 3 were fabricated via physical coating, separately, of C2 and C1 on glass plate surfaces. As another comparison, Film 2 was also fabricated with C2 as a fluorophore but at a much lower concentration if compared to that for the preparation of Film 1. As revealed by SEM and fluorescent microscopy studies, Film 1 and Film 2 exhibit well-defined microstructures, which are spherical particles and spherical pores, respectively, while Film 3 is characterized by irregular aggregates of C1. Fluorescence measurements demonstrated that Film 1 and Film 3 both display an aggregation emission, of which the emission from Film 1 is supersensitive to the presence of HCl vapor (detection limit: 0.4 ppb, a lowest value reported in the literatures). For Film 3, however, its emission is insensitive to the presence of the vapor. Similarly, the emission from the nonaggregated state of C2, a characteristic emission of Film 2, is also insensitive to the presence of the vapor. Furthermore, the sensing process of Film 1 to the vapor is highly selective and fully reversible, which lays foundation for its real-life uses. As for C2, the results from solution studies and those from film studies demonstrate clearly that introduction of auxiliary structures with opposite properties onto a typical fluorophore is a good strategy to develop fluorescent supramolecular motifs with rich assembly properties and great potential of applications.
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Affiliation(s)
- Xiaohuan Sun
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710062, P. R. China
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18
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González-Carrero S, de la Guardia M, Galian RE, Pérez-Prieto J. Pyrene-Capped CdSe@ZnS Nanoparticles as Sensitive Flexible Oxygen Sensors in Non-Aqueous Media. ChemistryOpen 2014; 3:199-205. [PMID: 25478315 PMCID: PMC4234216 DOI: 10.1002/open.201402021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Indexed: 01/30/2023] Open
Abstract
A flexible, highly sensitive sensor of oxygen in non-aqueous solvents is described. It consists of CdSe/ZnS nanoparticles decorated with a considerable number of pyrene units, thus making the formation of the pyrene excimer possible. The emission of the pyrene excimer and that of the nanoparticle are suitably separated from each other and also from the excitation wavelength. This sensor can be applied as a ratiometric oxygen sensor by using the linear response of the pyrene excimer lifetime combined with the linear response of the nanoparticle excited state lifetime. This nanohybrid has been assayed in seven media with different dielectric constants and viscosities over the whole oxygen concentration range. In addition, the sensor versatility provides an easy way for monitoring oxygen diffusion through systems.
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Affiliation(s)
- Soranyel González-Carrero
- Instituto de Ciencia Molecular, Universidad de Valencia c/Catedrático José Beltrán 2 Paterna, 46980 Valencia (Spain), E-mail:
| | - Miguel de la Guardia
- Departamento de Química Analítica, Universidad de Valencia Dr. Moliner 50, Burjassot, 46100 Valencia (Spain)
| | - Raquel E Galian
- Instituto de Ciencia Molecular, Universidad de Valencia c/Catedrático José Beltrán 2 Paterna, 46980 Valencia (Spain), E-mail:
| | - Julia Pérez-Prieto
- Instituto de Ciencia Molecular, Universidad de Valencia c/Catedrático José Beltrán 2 Paterna, 46980 Valencia (Spain), E-mail:
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19
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Venkatramaiah N, Firmino ADG, Almeida Paz FA, Tomé JPC. Fast detection of nitroaromatics using phosphonate pyrene motifs as dual chemosensors. Chem Commun (Camb) 2014; 50:9683-6. [DOI: 10.1039/c4cc03980g] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new class of dual fluorescent chemosensors for nitroaromatic compounds (NACs) based on phosphonated pyrene derivatives is reported, showing high selectivity towards trinitrotoluene (TNT).
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Affiliation(s)
- N. Venkatramaiah
- Department of Chemistry
- QOPNA
- University of Aveiro
- 3810-193 Aveiro, Portugal
- Department of Chemistry
| | - Ana D. G. Firmino
- Department of Chemistry
- QOPNA
- University of Aveiro
- 3810-193 Aveiro, Portugal
- Department of Chemistry
| | | | - João P. C. Tomé
- Department of Chemistry
- QOPNA
- University of Aveiro
- 3810-193 Aveiro, Portugal
- Department of Organic Chemistry
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20
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Hou X, Yu Q, Zeng F, Yu C, Wu S. Ratiometric fluorescence assay for γ-glutamyltranspeptidase detection based on a single fluorophore via analyte-induced variation of substitution. Chem Commun (Camb) 2014; 50:3417-20. [DOI: 10.1039/c4cc00473f] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Pérez-Prieto J. Symbiosis Between Photoactive Nanoparticles and their Organic Ligands. Photochem Photobiol 2013; 89:1291-8. [DOI: 10.1111/php.12109] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Accepted: 05/27/2013] [Indexed: 11/28/2022]
Affiliation(s)
- Julia Pérez-Prieto
- Instituto de Ciencia Molecular (ICMol); Universidad de Valencia; Paterna Valencia Spain
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Maity P, Takano S, Yamazoe S, Wakabayashi T, Tsukuda T. Binding motif of terminal alkynes on gold clusters. J Am Chem Soc 2013; 135:9450-7. [PMID: 23721396 DOI: 10.1021/ja401798z] [Citation(s) in RCA: 147] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Gold clusters protected by terminal alkynes (1-octyne (OC-H), phenylacetylene (PA-H) and 9-ethynyl-phenanthrene (EPT-H)) were prepared by the ligand exchange of small (diameter <2 nm) Au clusters stabilized by polyvinylpyrrolidone. The bonding motif of these alkynes on Au clusters was investigated using various spectroscopic methods. FTIR and Raman spectroscopy revealed that terminal hydrogen is lost during the ligand exchange and that the C≡C bond of the alkynyl group is weakened upon attachment to the Au clusters. Acidification of the water phase after the ligand exchange indicated that the ligation of alkynyl groups to the Au clusters proceeds via deprotonation of the alkynes. A series of precisely defined Au clusters, Au34(PA)16, Au54(PA)26, Au30(EPT)13, Au35(EPT)18, and Au(41-43)(EPT)(21-23), were synthesized and characterized in detail to obtain further insight into the interfacial structures. Careful mass analysis confirmed the ligation of the alkynes in the dehydrogenated form. An upright configuration of the alkynes on Au clusters was suggested from the Au to alkyne ratios and photoluminescence from the excimer of the EPT ligands. EXAFS analysis implied that the alkynyl carbon is bound to bridged or hollow sites on the cluster surface.
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Affiliation(s)
- Prasenjit Maity
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Niko Y, Kawauchi S, Otsu S, Tokumaru K, Konishi GI. Fluorescence enhancement of pyrene chromophores induced by alkyl groups through σ-π conjugation: systematic synthesis of primary, secondary, and tertiary alkylated pyrenes at the 1, 3, 6, and 8 positions and their photophysical properties. J Org Chem 2013; 78:3196-207. [PMID: 23425392 DOI: 10.1021/jo400128c] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
We have systematically synthesized 1-, 3-, 6-, and 8-alkyl-substituted pyrene derivatives using the latest synthesis methods and investigated the effects of alkyl substitution on the photophysical properties of the pyrene chromophore. Like the trimethylsilyl group, which is known to enhance the fluorescence properties of some chromophores through σ*-π* conjugation, alkyl groups (primary, secondary, and tertiary) enhanced the fluorescence quantum yield of the pyrene chromophore through σ-π conjugation in most cases. While these enhancements in the fluorescence quantum yield were beyond expectations, the results were supported by absolute measurements. These results also indicate that ubiquitous alkyl groups can be used to tune the photophysical properties of the pyrene chromophore, as well as to improve the solubility or prevent aggregation. In other words, they can be used to develop new photofunctional materials.
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Affiliation(s)
- Yosuke Niko
- Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama, Tokyo 152-8552, Japan
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