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Hazra R, Bera N, Layek S, Sarkar N. Efficiency of Encapsulation of Thioflavin T (ThT) into Polar and Nonpolar Environments of Different Bile Salt Aggregates: A Femtosecond Fluorescence Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:16272-16282. [PMID: 39042864 DOI: 10.1021/acs.langmuir.4c01460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
The binding of Thioflavin T (ThT) with various bile salts, a potential host molecule, has been analyzed by steady-state and time-resolved fluorescence spectroscopy. A comparative study has been executed to investigate the influence of confinement of different bile salts, namely, sodium cholate (NaCh), sodium taurocholate (NaTC), and sodium deoxycholate (NaDC) on binding and excited state torsional motion of ThT molecules. The changes in absorption and emission properties of probe molecules were found to be sensitive to increasing bile salt concentration in aqueous 0.2 (M) NaCl solutions. The photophysics of ThT mainly depends on hydrophobicity, morphology, and size of bile salt aggregates in solution. In the presence of bile salts, the emission intensity and emission lifetime of ThT increase significantly, indicating encapsulation of dye. Moreover, we have also investigated the effect of the ionic strength of the medium by sodium chloride (NaCl) on the spectroscopic properties of ThT in the restricted surroundings of aqueous bile salts. It is observed that the fluorescence lifetime of ThT in bile salts increases significantly in the presence of NaCl. The encapsulation efficiency of ThT in bile salt aggregates has been assessed by iodide (I-) as an external ionic quencher. We found that NaDC aggregates are more efficient in the modulation of photophysical properties of ThT and also provide better protection efficiency to decrease the nonradiative deactivation processes.
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Affiliation(s)
- Ritwik Hazra
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Nanigopal Bera
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Souvik Layek
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Nilmoni Sarkar
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
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2
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Anselmo S, Sancataldo G, Vetri V. Deciphering amyloid fibril molecular maturation through FLIM-phasor analysis of thioflavin T. BIOPHYSICAL REPORTS 2024; 4:100145. [PMID: 38404533 PMCID: PMC10884809 DOI: 10.1016/j.bpr.2024.100145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 01/25/2024] [Indexed: 02/27/2024]
Abstract
The investigation of amyloid fibril formation is paramount for advancing our understanding of neurodegenerative diseases and for exploring potential correlated therapeutic strategies. Moreover, the self-assembling properties of amyloid fibrils show promise for the development of advanced protein-based biomaterials. Among the methods employed to monitor protein aggregation processes, fluorescence has emerged as a powerful tool. Its exceptional sensitivity enables the detection of early-stage aggregation events that are otherwise challenging to observe. This research underscores the pivotal role of fluorescence analysis, particularly in investigating the aggregation processes of hen egg white lysozyme, a model protein extensively studied for insights into amyloid fibril formation. By combining classical spectroscopies with fluorescence microscopy and by exploiting the fluorescence properties (intensity and lifetime) of the thioflavin T, we were able to noninvasively monitor key and complex molecular aspects of the process. Intriguingly, the fluorescence lifetime imaging-phasor analysis of thioflavin T fluorescence lifetime on structures at different stages of aggregation allowed to decipher the complex fluorescence decay behavior, highlighting that their changes rise from the combination of specific binding to amyloid typical cross-β structures and of the rigidity of the molecular environment.
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Affiliation(s)
- Sara Anselmo
- Dipartimento di Fisica e Chimica – Emilio Segré, Università degli Studi di Palermo, Palermo, Italy
| | - Giuseppe Sancataldo
- Dipartimento di Fisica e Chimica – Emilio Segré, Università degli Studi di Palermo, Palermo, Italy
| | - Valeria Vetri
- Dipartimento di Fisica e Chimica – Emilio Segré, Università degli Studi di Palermo, Palermo, Italy
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3
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Cheng X, Pu Y, Ye S, Xiao X, Zhang X, Chen H. Measuring Solvent Exchange in Silica Nanoparticles with Rotor-Based Fluorophore. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2305779. [PMID: 37774750 DOI: 10.1002/adma.202305779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 09/15/2023] [Indexed: 10/01/2023]
Abstract
Measuring the diffusivity of molecules is the first step toward understanding their dependence and controlling diffusion, but the challenge increases with the decrease of molecular size, particularly for non-fluorescent and non-reactive molecules such as solvents. Here, the capability to monitor the solvent exchange process within the micropores of silica with millisecond time resolution is demonstrated, by simply embedding a rotor-based fluorophore (thioflavin T) in colloidal silica nanoparticles. Basically, the silica provides an extreme case of viscous microenvironment, which is affected by the polarity of the solvents. The fluorescence intensity traces can be well fitted to the Fickian diffusion model, allowing analytical solution of the diffusion process, and revealing the diffusion coefficients. The validation experiments, involving the water-to-ethanol and ethanol-to-water solvent exchange, the comparison of different drying conditions, and the variation in the degree of cross-linking in silica, confirmed the effectiveness and sensitivity of this method for characterizing diffusion in silica micropores. This work focuses on the method development of measuring diffusivity and the high temporal resolution in tracking solvent exchange dynamics over a short distance (within 165 nm) opens enormous possibilities for further studies.
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Affiliation(s)
- Xuejun Cheng
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China
- Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou, Zhejiang, 310024, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, Zhejiang, 310024, China
| | - Yingming Pu
- Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou, Zhejiang, 310024, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, Zhejiang, 310024, China
| | - Songtao Ye
- Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou, Zhejiang, 310024, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, Zhejiang, 310024, China
| | - Xiao Xiao
- Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou, Zhejiang, 310024, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, Zhejiang, 310024, China
| | - Xin Zhang
- Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou, Zhejiang, 310024, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, Zhejiang, 310024, China
| | - Hongyu Chen
- Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou, Zhejiang, 310024, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, Zhejiang, 310024, China
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4
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Song AM, Tong YJ, Liang RP, Qiu JD. A ratiometric lanthanide fluorescent probe for highly sensitive detection of alkaline phosphatase and arsenate. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106027] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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5
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Pu F, Qu S, Qiu H, Zhang L. Regulation of light-harvesting antenna based on silver ion-enhanced emission of dye-doped coordination polymer nanoparticles. J Colloid Interface Sci 2020; 578:254-261. [PMID: 32531555 DOI: 10.1016/j.jcis.2020.05.083] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 05/19/2020] [Accepted: 05/21/2020] [Indexed: 10/24/2022]
Abstract
The design and construction of artificial light-harvesting systems for solar energy conversion to chemical energy has been an active research field. A variety of molecules and materials have been used to mimic the function of the light-harvesting antenna. However, the improvement or regulation of the antenna effect of the existing artificial light-harvesting systems is less explored. Coordination polymers have aroused extensive concern due to their applications in light-harvesting and energy conversion. Herein, it is found that silver ion can dramatically enhance the emission of dye encapsulated in the coordination polymer nanoparticles (CPNs). The mechanism of Ag+-induced fluorescence enhancement is elucidated. Taking advantage of the effect of Ag+ ions, the regulation of CPN-based light-harvesting system by Ag+ is achieved for the first time. The antenna effect could be up to 2.3 times the original value by adding Ag+ ions. The present work provides a new approach to regulate the antenna effect of the light-harvesting system with the advantages of convenience, rapidity, low cost, and flexibility.
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Affiliation(s)
- Fang Pu
- State Key Laboratory of Rare Earth Resource Utilization and Laboratory of Chemical Biology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.
| | - Songrong Qu
- High School Attached to Northeast Normal University, Changchun, Jilin 130022, China
| | - Hao Qiu
- State Key Laboratory of Rare Earth Resource Utilization and Laboratory of Chemical Biology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China; University of Science and Technology of China, Hefei 230026, China
| | - Lu Zhang
- State Key Laboratory of Rare Earth Resource Utilization and Laboratory of Chemical Biology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China; University of Chinese Academy of Sciences, Beijing 100039, China
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6
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De Luca G, Fennema Galparsoro D, Sancataldo G, Leone M, Foderà V, Vetri V. Probing ensemble polymorphism and single aggregate structural heterogeneity in insulin amyloid self-assembly. J Colloid Interface Sci 2020; 574:229-240. [DOI: 10.1016/j.jcis.2020.03.107] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 03/19/2020] [Accepted: 03/28/2020] [Indexed: 02/01/2023]
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7
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De Michele V, Levantino M, Cupane A. Hysteresis in the temperature dependence of the IR bending vibration of deeply cooled confined water. J Chem Phys 2019; 150:224509. [PMID: 31202227 DOI: 10.1063/1.5096988] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Using Fourier Transform Infrared (FTIR) spectroscopy, we investigate the temperature dependence of the bending vibrations of water confined in the pores of a silica hydrogel in the temperature interval of 270-180 K. We also investigate the presence of thermal hysteresis by cooling and reheating temperature scans. The results clearly show the presence, at about 230 K, of a crossover in the temperature dependence of the IR spectra; moreover, the presence of hysteresis is clearly demonstrated. By comparing FTIR data with neutron diffraction data and previous calorimetric data on the same samples, we conclude that the crossover and the hysteretical behavior do not involve a water glass transition or crystallization but are related to a first-order-like liquid-liquid transition.
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Affiliation(s)
- Vincenzo De Michele
- Dipartimento di Fisica e Chimica "Emilio Segrè," Università di Palermo, Viale delle Scienze Ed. 18, 90128 Palermo, Italy
| | - Matteo Levantino
- Dipartimento di Fisica e Chimica "Emilio Segrè," Università di Palermo, Viale delle Scienze Ed. 18, 90128 Palermo, Italy
| | - Antonio Cupane
- Dipartimento di Fisica e Chimica "Emilio Segrè," Università di Palermo, Viale delle Scienze Ed. 18, 90128 Palermo, Italy
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8
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Balaguez RA, Betin ES, Barcellos T, Lenardão EJ, Alves D, Schumacher RF. Synthesis of 2-acyl-benzo[1,3-d]selenazoles via domino oxidative cyclization of methyl ketones with bis(2-aminophenyl) diselenide. NEW J CHEM 2017. [DOI: 10.1039/c6nj03103j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The synthesis of unprecedented 2-acyl-benzo[1,3-d]selenazoles is presented using bis(2-aminophenyl) diselenide and aryl methyl ketones under conventional heating and microwave irradiation.
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Affiliation(s)
- Renata A. Balaguez
- Laboratório de Síntese Orgânica Limpa – LASOL
- CCQFA
- Universidade Federal de Pelotas – UFPel
- Pelotas
- Brazil
| | - Eduardo S. Betin
- Laboratório de Síntese Orgânica Limpa – LASOL
- CCQFA
- Universidade Federal de Pelotas – UFPel
- Pelotas
- Brazil
| | - Thiago Barcellos
- Laboratory of Biotechnology of Natural and Synthetic Products
- Universidade de Caxias do Sul
- Caxias do Sul
- Brazil
| | - Eder J. Lenardão
- Laboratório de Síntese Orgânica Limpa – LASOL
- CCQFA
- Universidade Federal de Pelotas – UFPel
- Pelotas
- Brazil
| | - Diego Alves
- Laboratório de Síntese Orgânica Limpa – LASOL
- CCQFA
- Universidade Federal de Pelotas – UFPel
- Pelotas
- Brazil
| | - Ricardo F. Schumacher
- Laboratório de Síntese Orgânica Limpa – LASOL
- CCQFA
- Universidade Federal de Pelotas – UFPel
- Pelotas
- Brazil
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9
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Sun D, Li N, Zhang W, Zhao Z, Mou Z, Huang D, Liu J, Wang W. Design of PLGA-functionalized quercetin nanoparticles for potential use in Alzheimer’s disease. Colloids Surf B Biointerfaces 2016; 148:116-129. [DOI: 10.1016/j.colsurfb.2016.08.052] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 08/26/2016] [Accepted: 08/29/2016] [Indexed: 12/14/2022]
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10
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Mukherjee P, Rafiq S, Sen P. Dual relaxation channel in thioflavin-T: An ultrafast spectroscopic study. J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2016.05.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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11
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Li YY, Jiang XQ, Zhang M, Shi G. A visual and reversible assay for temperature using thioflavin T-doped lanthanide/nucleotide coordination polymers. Analyst 2016; 141:2347-50. [PMID: 27010102 DOI: 10.1039/c6an00274a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, we prepared a type of thioflavin T (ThT)-doped lanthanide/nucleotide coordination polymer by the self-assembly of ThT, europium ions (Eu(3+)) and nucleotides (guanosine monophosphate, GMP) in aqueous solution (i.e. ThT/Eu/GMP). The Eu/GMP coordination polymers show excellent adaptive inclusion properties for ThT in a convenient one-step approach, which can readily enhance the fluorescence of ThT via the restricted effect. Moreover, the as-prepared hydrophilic ThT/Eu/GMP coordination polymers have the capability to act as a temperature-sensitive, visual and reversible sensor in aqueous solution under the irradiation of visible light. Our proposed design is cost-effective and simple to prepare without chemical modification or fluorescence labeling.
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Affiliation(s)
- Yan-Yun Li
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, P. R. China.
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12
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Induced circular dichroism of thioflavin T interacting with acetylcholinesterase: A computational study. Chem Phys 2015. [DOI: 10.1016/j.chemphys.2015.10.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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13
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Leung CWT, Guo F, Hong Y, Zhao E, Kwok RTK, Leung NLC, Chen S, Vaikath NN, El-Agnaf OM, Tang Y, Gai WP, Tang BZ. Detection of oligomers and fibrils of α-synuclein by AIEgen with strong fluorescence. Chem Commun (Camb) 2015; 51:1866-9. [PMID: 25526628 DOI: 10.1039/c4cc07911f] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a fluorophore, TPE-TPP, with AIE characteristics which is utilized as a fluorescence probe to monitor the α-synuclein (α-Syn) fibrillation process. Compared with ThT, TPE-TPP shows a higher sensitivity in the detection of α-Syn oligomers as well as fibrils with a stronger fluorescence. The performance of TPE-TPP was evaluated using fluorescence, AFM, dot blot, and SEC.
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Affiliation(s)
- Chris Wai Tung Leung
- HKUST Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen 518057, China.
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14
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Muthuraj B, Chowdhury SR, Iyer PK. Modulation of Amyloid-β Fibrils into Mature Microrod-Shaped Structure by Histidine Functionalized Water-Soluble Perylene Diimide. ACS APPLIED MATERIALS & INTERFACES 2015; 7:21226-21234. [PMID: 26340532 DOI: 10.1021/acsami.5b07260] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Alzheimer's disease (AD) is associated with different types of amyloid peptide aggregates including senile plaques, fibrils, protofibrils, and oligomers. Due to these difficulties, a powerful strategy is needed for the disaggregation of amyloid aggregates by modulating their self-aggregation behavior. Herein, we report a unique approach toward transforming the aggregated amyloidogenic peptides using an amino acid functionalized perylene diimide as a molecular modulator, which is a different nondestructive approach as compared to inhibiting the aggregation of peptides. The histidine functionalized perylenediimide (PDI-HIS) molecule could coassemble with amyloid β (Aβ) peptides via hydrogen bonding that leads to the enhancement in the π-π interactions between Aβ and PDI-HIS moieties. The Thioflavin T (ThT) assay and various spectroscopic and microscopic techniques establish that the PDI-HIS molecules accelerate the Aβ1-40 and the amyloid aggregates in CSF into micro size coassembled structures. These results give rise to a new and unique complementary approach for modulating the biological effects of the aggregates in amyloidogenic peptides.
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Affiliation(s)
- Balakrishnan Muthuraj
- Department of Chemistry, Indian Institute of Technology , Guwahati 781039, Assam, India
| | - Sayan Roy Chowdhury
- Department of Chemistry, Indian Institute of Technology , Guwahati 781039, Assam, India
| | - Parameswar K Iyer
- Department of Chemistry, Indian Institute of Technology , Guwahati 781039, Assam, India
- Center for Nanotechnology, Indian Institute of Technology , Guwahati 781039, Assam, India
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15
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Li YY, Zhang M, Lu LF, Zhu A, Xia F, Zhou T, Shi G. Ratiometric fluorescence detection of silver ions using thioflavin T-based organic/inorganic hybrid supraparticles. Analyst 2015. [DOI: 10.1039/c5an01146a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel ratiometric fluorescent probe for detecting silver ions was developed using thioflavin T-based functional organic/inorganic hybrid supraparticles.
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Affiliation(s)
- Yan-Yun Li
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- P. R. China
| | - Min Zhang
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- P. R. China
| | - Ling-Fei Lu
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- P. R. China
| | - Anwei Zhu
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- P. R. China
| | - Fei Xia
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- P. R. China
| | - Tianshu Zhou
- School of Ecological and Environmental Sciences
- East China Normal University
- Shanghai 200241
- P. R. China
| | - Guoyue Shi
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- P. R. China
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16
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Cupane A, Fomina M, Piazza I, Peters J, Schirò G. Experimental evidence for a liquid-liquid crossover in deeply cooled confined water. PHYSICAL REVIEW LETTERS 2014; 113:215701. [PMID: 25479506 DOI: 10.1103/physrevlett.113.215701] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Indexed: 05/15/2023]
Abstract
In this work we investigate, by means of elastic neutron scattering, the pressure dependence of mean square displacements (MSD) of hydrogen atoms of deeply cooled water confined in the pores of a three-dimensional disordered SiO2 xerogel; experiments have been performed at 250 and 210 K from atmospheric pressure to 1200 bar. The "pressure anomaly" of supercooled water (i.e., a mean square displacement increase with increasing pressure) is observed in our sample at both temperatures; however, contrary to previous simulation results and to the experimental trend observed in bulk water, the pressure effect is smaller at lower (210 K) than at higher (250 K) temperature. Elastic neutron scattering results are complemented by differential scanning calorimetry data that put in evidence, besides the glass transition at about 170 K, a first-order-like endothermic transition occurring at about 230 K that, in view of the neutron scattering results, can be attributed to a liquid-liquid crossover. Our results give experimental evidence for the presence, in deeply cooled confined water, of a crossover occurring at about 230 K (at ambient pressure) from a liquid phase predominant at 210 K to another liquid phase predominant at 250 K; therefore, they are fully consistent with the liquid-liquid transition hypothesis.
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Affiliation(s)
- Antonio Cupane
- University of Palermo, Department of Physics and Chemistry, via Archirafi 36, 90123 Palermo, Italy
| | - Margarita Fomina
- University of Palermo, Department of Physics and Chemistry, via Archirafi 36, 90123 Palermo, Italy
| | - Irina Piazza
- University of Palermo, Department of Physics and Chemistry, via Archirafi 36, 90123 Palermo, Italy
| | - Judith Peters
- Institut Laue Langevin, 71 avenue des Martyrs, F-38000 Grenoble, France, Université Joseph Fourier, F-38041 Grenoble Cedex 9, France, CNRS, CEA-Institut de Biologie Structurale, 71 avenue des Martyrs, 38000 Grenoble, France
| | - Giorgio Schirò
- CNRS-Institut de Biologie Structurale, 71 avenue des Martyrs, 38000 Grenoble, France
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17
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Cupane A, Fomina M, Schirò G. The boson peak of deeply cooled confined water reveals the existence of a low-temperature liquid-liquid crossover. J Chem Phys 2014; 141:18C510. [DOI: 10.1063/1.4895793] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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18
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Bahaidarah E, Harriman A, Stachelek P, Rihn S, Heyer E, Ziessel R. Fluorescent molecular rotors based on the BODIPY motif: effect of remote substituents. Photochem Photobiol Sci 2014; 13:1397-401. [DOI: 10.1039/c4pp00204k] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The fluorescence properties of the target rotor are strongly affected by aryl substituents at the lower rim.
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Affiliation(s)
- Effat Bahaidarah
- Molecular Photonics Laboratory
- School of Chemistry
- Bedson Building
- Newcastle University
- Newcastle upon Tyne, UK
| | - Anthony Harriman
- Molecular Photonics Laboratory
- School of Chemistry
- Bedson Building
- Newcastle University
- Newcastle upon Tyne, UK
| | - Patrycja Stachelek
- Molecular Photonics Laboratory
- School of Chemistry
- Bedson Building
- Newcastle University
- Newcastle upon Tyne, UK
| | - Sandra Rihn
- Laboratoire de Chimie Organique et de Spectroscopies Avancées (ICPEES-LCOSA)
- UMR 7515 CNRS
- 67087 Strasbourg Cedex 2, France
| | - Elodie Heyer
- Laboratoire de Chimie Organique et de Spectroscopies Avancées (ICPEES-LCOSA)
- UMR 7515 CNRS
- 67087 Strasbourg Cedex 2, France
| | - Raymond Ziessel
- Laboratoire de Chimie Organique et de Spectroscopies Avancées (ICPEES-LCOSA)
- UMR 7515 CNRS
- 67087 Strasbourg Cedex 2, France
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