1
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Ghorai S, Dasgupta S, Mukherjee A, Barui A, Roymahapatra G, Ganguly J. An Integrated Polysaccharide Hydrogel with Versatile Fluorescence Responses through Noncovalent Reformation of Gel Aggregation and for Bioimaging. ACS APPLIED BIO MATERIALS 2024; 7:5640-5650. [PMID: 39094036 DOI: 10.1021/acsabm.4c00696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
Abstract
Functionalized hydrogels, with their unique and adaptable structures, have attracted significant attention in materials and biomaterials research. Fluorescent hydrogels are particularly noteworthy for their sensing capabilities and ability to mimic cellular matrices, facilitating cell infiltration and tracking of drug delivery. Structural elucidation of hydrogels is crucial for understanding their responses to stimuli such as the pH, temperature, and solvents. This study developed a fluorescent hydrogel by functionalizing chitosan with p-cresol-based quinazolinone aldehyde. Confocal microscopy revealed the hydrogel's intriguing fluorogenic properties. The hydrogel exhibited enhanced fluorescence and a tunable network morphology, influenced by the THF-water ratio. The study investigated the control of gel network reformation in different media and analyzed the fluorescence responses and structural changes of the sugar backbone and fluorophore. Proper selection of mixed solvents is essential for optimizing the hydrogel as a fluorescence probe for bioimaging. This hydrogel demonstrated greater swelling properties, making it highly suitable for drug delivery applications.
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Affiliation(s)
- Shubhankar Ghorai
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Howrah, W.B. 711103, India
| | - Shalini Dasgupta
- Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Howrah, W.B. 711103, India
| | - Animesh Mukherjee
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Howrah, W.B. 711103, India
| | - Ananya Barui
- Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Howrah, W.B. 711103, India
| | - Gourisankar Roymahapatra
- School of Applied Science and Humanities, Haldia Institute of Technology, Haldia, West Bengal 721657, India
| | - Jhuma Ganguly
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Howrah, W.B. 711103, India
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2
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Chowdhury A, Dasgupta S, Gaur N, Shukla A, Adhyapak P, Kabra D, Datta A. Modulation of fluorescence and phosphorescence of organoboron compounds from ortho-substituted phenolic Schiff bases by structural modification. Photochem Photobiol 2024; 100:1089-1099. [PMID: 38801138 DOI: 10.1111/php.13965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Revised: 04/20/2024] [Accepted: 04/30/2024] [Indexed: 05/29/2024]
Abstract
Light emission from organoboron compounds of Schiff bases is found to depend strongly on their chemical structure. Two of these compounds (OB1 and OB2), which contain a benzene ring between the Schiff base moieties, exhibit weak fluorescence in methanol, with marked viscosity dependence. Fluorescence lifetimes of these compounds are in picosecond timescale, as determined by femtosecond optical gating (FOG). A significant enhancement in fluorescence intensity and lifetime is observed at 77 K, indicating the operation of an activated nonradiative process. Using fluorescence lifetime imaging microscopy (FLIM), OB1 and OB2 are shown to be potential membrane probes. The third (OB3), which is devoid of this benzene ring, exhibits relatively stronger fluorescence with nanosecond lifetimes at room temperature. No viscosity dependence is observed in this case. The emission spectrum at 77 K is markedly more intense and exhibits an additional red shifted structured feature, which persists for a few seconds. Hence, OB3 seems to have greater promise not only as fluorescent probe but also for light harvesting. The marked improvement of the light emission properties of OB3 compared with OB1 and OB2 is likely to serve as a pointer for the design of Schiff base-derived organoboron luminophores with diverse potential applications.
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Affiliation(s)
- Arkaprava Chowdhury
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, India
| | - Souradip Dasgupta
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, India
| | - Nrita Gaur
- Department of Physics, Indian Institute of Technology Bombay, Mumbai, India
| | - Aparna Shukla
- Department of Chemistry & Chemical Biology, Indian Institute of Technology (ISM) Dhanbad, Dhanbad, India
| | - Pranav Adhyapak
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, India
| | - Dinesh Kabra
- Department of Physics, Indian Institute of Technology Bombay, Mumbai, India
| | - Anindya Datta
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, India
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3
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Paez‐Perez M, Kuimova MK. Molecular Rotors: Fluorescent Sensors for Microviscosity and Conformation of Biomolecules. Angew Chem Int Ed Engl 2024; 63:e202311233. [PMID: 37856157 PMCID: PMC10952837 DOI: 10.1002/anie.202311233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 10/17/2023] [Accepted: 10/17/2023] [Indexed: 10/20/2023]
Abstract
The viscosity and crowding of biological environment are considered vital for the correct cellular function, and alterations in these parameters are known to underly a number of pathologies including diabetes, malaria, cancer and neurodegenerative diseases, to name a few. Over the last decades, fluorescent molecular probes termed molecular rotors proved extremely useful for exploring viscosity, crowding, and underlying molecular interactions in biologically relevant settings. In this review, we will discuss the basic principles underpinning the functionality of these probes and will review advances in their use as sensors for lipid order, protein crowding and conformation, temperature and non-canonical nucleic acid structures in live cells and other relevant biological settings.
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Affiliation(s)
- Miguel Paez‐Perez
- Department of Chemistry, Imperial College London, MSRHImperial College LondonWood LaneLondonW12 0BZUK
| | - Marina K. Kuimova
- Department of Chemistry, Imperial College London, MSRHImperial College LondonWood LaneLondonW12 0BZUK
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4
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Le Dizès Castell R, Mirzahossein E, Grzelka M, Jabbari-Farouji S, Bonn D, Shahidzadeh N. Visualization of the Sol-Gel Transition in Porous Networks Using Fluorescent Viscosity-Sensitive Probes. J Phys Chem Lett 2024; 15:628-635. [PMID: 38205957 PMCID: PMC10801688 DOI: 10.1021/acs.jpclett.3c02634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/21/2023] [Accepted: 12/01/2023] [Indexed: 01/12/2024]
Abstract
The sol-gel transition involves the transformation of a colloidal suspension into a system-spanning, interconnected gel. This process is widely used to reinforce mechanically weakened porous artifacts, such as sculptures but the impact of the restricted geometry (porous network) on the gelation dynamics of the solution remains unclear. Here, using fluorescent viscosity-sensitive molecular rotors, confocal microscopy, and model pores, we visualize the local viscosity changes at the microscale that accompany the sol-gel transition of a methyltriethoxysilane solution into a gel network. We show that, with evaporation of the solvent, a viscosity gradient develops near the free surface, triggering the sol-gel transition inside small pores near the surface. In homogeneous porous media, this leads to skin formation, which reduces the evaporation rate. In heterogeneous porous media, a gradient in gel density develops toward the heart of the porous material, where the gel formation mainly occurs as capillary bridges within smaller pores.
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Affiliation(s)
| | - Elham Mirzahossein
- Institute
of Physics, University of Amsterdam, Amsterdam 1098XH, The Netherlands
| | - Marion Grzelka
- Laboratoire
Léon Brillouin, Université Paris-Saclay, CEA-Saclay, 91191 Gif-sur-Yvette
Cedex, France
| | - Sara Jabbari-Farouji
- Institute
of Physics, University of Amsterdam, Amsterdam 1098XH, The Netherlands
| | - Daniel Bonn
- Institute
of Physics, University of Amsterdam, Amsterdam 1098XH, The Netherlands
| | - Noushine Shahidzadeh
- Institute
of Physics, University of Amsterdam, Amsterdam 1098XH, The Netherlands
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5
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Ghorai S, Jana B, Ganguly J. Network-supported and adaptable binding efficacy for flexible and multi-functionalized chitosan/phenolic carbaldehyde hydrogels. Int J Biol Macromol 2023; 253:127004. [PMID: 37734526 DOI: 10.1016/j.ijbiomac.2023.127004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 09/12/2023] [Accepted: 09/18/2023] [Indexed: 09/23/2023]
Abstract
A thoughtful strategy has been intended to control the hydrogel networking to assess the binding efficacy of multifunctional hydrogel. The processing of two distinct network-supported hydrogels has portrayed to express the operating interactions involved during co-existence with solvents, small molecules, biomolecules, etc. Herein, chitosan has separately functionalized in semisynthetic approaches with 4-hydroxyisopthalaldehyde (ChDA) and 2-hydroxybenzene-1,3,5-tricarbaldehyde (ChTA) to construct different gel networks. The disposition of gel networks ChDA adapts more flexible chain or spine, whereas ChTA possesses restricted movements within gel networks. The gel networks of hydrogels have a significant role in their distinct physical activities. Their gel-bonding elucidations have performed to establish the variation in mechanical, swelling photophysical properties, etc. Remarkable self-fluorescence behaviors are used as a tool for binding study. Distinctive gel networks and their flexibility have investigated against self-fluorescence, UV-Vis, and FTIR against small molecule, Boron trifluoride and biomolecule, and Bovine serum albumin. Hydrogel/BF3 shows variation in fluorescence due to the disposition of gel networks. Hydrogel/BSA quenching of fluorescence at three different temperatures provides the binding constant and Stern-Volmer quenching constant. Theoretical DFT and docking studies successfully established the flexibility against binding study. The controlling of cross-linking or functionalization is very crucial for the development of hydrogel-mediated applications.
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Affiliation(s)
- Shubhankar Ghorai
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Howrah 711103, WB, India.
| | - Biswajit Jana
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Howrah 711103, WB, India.
| | - Jhuma Ganguly
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Howrah 711103, WB, India.
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6
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Barroso M, Monaghan MG, Niesner R, Dmitriev RI. Probing organoid metabolism using fluorescence lifetime imaging microscopy (FLIM): The next frontier of drug discovery and disease understanding. Adv Drug Deliv Rev 2023; 201:115081. [PMID: 37647987 PMCID: PMC10543546 DOI: 10.1016/j.addr.2023.115081] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 04/20/2023] [Accepted: 08/24/2023] [Indexed: 09/01/2023]
Abstract
Organoid models have been used to address important questions in developmental and cancer biology, tissue repair, advanced modelling of disease and therapies, among other bioengineering applications. Such 3D microenvironmental models can investigate the regulation of cell metabolism, and provide key insights into the mechanisms at the basis of cell growth, differentiation, communication, interactions with the environment and cell death. Their accessibility and complexity, based on 3D spatial and temporal heterogeneity, make organoids suitable for the application of novel, dynamic imaging microscopy methods, such as fluorescence lifetime imaging microscopy (FLIM) and related decay time-assessing readouts. Several biomarkers and assays have been proposed to study cell metabolism by FLIM in various organoid models. Herein, we present an expert-opinion discussion on the principles of FLIM and PLIM, instrumentation and data collection and analysis protocols, and general and emerging biosensor-based approaches, to highlight the pioneering work being performed in this field.
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Affiliation(s)
- Margarida Barroso
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY 12208, USA
| | - Michael G Monaghan
- Department of Mechanical, Manufacturing and Biomedical Engineering, Trinity College Dublin, Dublin 02, Ireland
| | - Raluca Niesner
- Dynamic and Functional In Vivo Imaging, Freie Universität Berlin and Biophysical Analytics, German Rheumatism Research Center, Berlin, Germany
| | - Ruslan I Dmitriev
- Tissue Engineering and Biomaterials Group, Department of Human Structure and Repair, Faculty of Medicine and Health Sciences, Ghent University, C. Heymanslaan 10, 9000 Ghent, Belgium; Ghent Light Microscopy Core, Ghent University, 9000 Ghent, Belgium.
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7
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Bhusana Palai B, Kumari S, Dixit M, Sharma NK. Nonbenzenoid BODIPY Analogues: Synthesis, Structural Organization, Photophysical Studies, and Cell Internalization of Biocompatible N- Alkyl-Aminotroponyl Difluoroboron ( Alkyl-ATB) Complexes. ACS OMEGA 2022; 7:27347-27358. [PMID: 35967069 PMCID: PMC9366977 DOI: 10.1021/acsomega.2c02379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
The alkyl-BODIPY derivatives are lipid types of fluorescent molecules that exhibit a unique structure and functions including sensing of hydrophobic microenvironments in living cells. Their synthesis involves multisteps from the core structure dipyrromethene scaffold. The alkyl-BODIPY analogues are sought to derivatize with minimal synthetic steps even by altering the core structures derived from benzenoid aromatic moiety. Recently, the nonbenzenoid scaffold (aminotropone) has been explored to synthesize troponyl-BODIPY analogues, which are fluorescent. In the repertoire of nonbenzenoid analogue, N-alkyl-aminotroponyl difluoroboron (alkyl-ATB) is rationally designed comprising long-chain hydrocarbons to explore the lipid type of fluorescent molecules. This report describes the synthesis, photophysical studies, structural organization, and biocompatibilities of ATB derivatives containing different lengths of alkyl chain at 2-aminotropone scaffold. The photophysical studies of ATB derivatives reveal their fluorescence behaviors in organic solvents (CH3OH/CH3CN) with a quantum yield of ∼10 to 15%. These ATB derivatives also exhibit fluorescence characters in the solid state though their quantum yield is relatively low. Cell permeability and cytotoxicity studies reveal that alkyl-ATB derivatives are permeable to HeLa/HEK293T cell lines and show negligible cytotoxicity. The biocompatibility of alkyl-ATB derivatives is studied and confirmed by cell viability (MTT) assay to the HeLa/HEK293T cell lines. Importantly, the cell internalization studies of the representative alkyl-ATB molecule by fluorescence microscopy show that octyl-ATB is efficiently detectable at the cytoplasmic membrane and cellular nucleus in HeLa cells. Hence, alkyl-ATB derivatives are potential fluorescent molecules for developing probes to visualize cellular components under a fluorescence microscope.
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Affiliation(s)
- Bibhuti Bhusana Palai
- School
of Chemical Sciences, National Institute
of Science Education and Research (NISER) Bhubaneswar, Jatni 752050, Odisha, India
- Homi
Bhabha National Institute (HBNI), Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Supriya Kumari
- School
of Chemical Sciences, National Institute
of Science Education and Research (NISER) Bhubaneswar, Jatni 752050, Odisha, India
- School
of Biological Sciences, National Institute
of Science Education and Research (NISER) Bhubaneswar, Jatni 752050, Odisha, India
| | - Manjusha Dixit
- School
of Biological Sciences, National Institute
of Science Education and Research (NISER) Bhubaneswar, Jatni 752050, Odisha, India
- Homi
Bhabha National Institute (HBNI), Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Nagendra K. Sharma
- School
of Chemical Sciences, National Institute
of Science Education and Research (NISER) Bhubaneswar, Jatni 752050, Odisha, India
- Homi
Bhabha National Institute (HBNI), Training School Complex, Anushaktinagar, Mumbai 400094, India
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8
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Lisitsyna E, Efimov A, Depresle C, Cauchois P, Vuorimaa-Laukkanen E, Laaksonen T, Durandin N. Deciphering Multiple Critical Parameters of Polymeric Self-Assembly by Fluorescence Spectroscopy of a Single Molecular Rotor BODIPY-C12. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02167] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ekaterina Lisitsyna
- Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33720 Tampere, Finland
| | - Alexander Efimov
- Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33720 Tampere, Finland
| | - Clémentine Depresle
- Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33720 Tampere, Finland
- INSA Rouen Normandie, 685 Avenue de l’université, 76800 Saint-Etienne-du-Rouvray, France
| | - Pierre Cauchois
- Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33720 Tampere, Finland
- Ecole Nationale Supérieure de Chimie de Lille, Avenue Mendeleiev, 59652 Villeneuve-d’Ascq, France
| | - Elina Vuorimaa-Laukkanen
- Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33720 Tampere, Finland
| | - Timo Laaksonen
- Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33720 Tampere, Finland
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Nikita Durandin
- Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33720 Tampere, Finland
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9
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Cao J, Sun W, Fan J. Insights into bishemicyanines with long emission wavelengths and high sensitivity in viscous environments. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.10.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Delfi M, Leone S, Emendato A, Ami D, Borriello M, Natalello A, Iannuzzi C, Picone D. Understanding the self-assembly pathways of a single chain variant of monellin: A first step towards the design of sweet nanomaterials. Int J Biol Macromol 2020; 152:21-29. [PMID: 32088237 DOI: 10.1016/j.ijbiomac.2020.02.229] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 02/19/2020] [Accepted: 02/20/2020] [Indexed: 12/20/2022]
Abstract
Peptides and proteins possess an inherent tendency to self-assemble, prompting the formation of amyloid aggregates from their soluble and functional states. Amyloids are linked to many devastating diseases, but self-assembling proteins can also represent formidable tools to produce new and sustainable biomaterials for biomedical and biotechnological applications. The mechanism of fibrillar aggregation, which influences the morphology and the properties of the protein aggregates, depend on factors such as pH, ionic strength, temperature, agitation, and protein concentration. We have here used intensive mechanical agitation, with or without beads, to prompt the aggregation of the single-chain derivative of the plant protein monellin, named MNEI, which is a well characterized sweet protein. Transmission electron microscopy confirmed the formation of fibrils several micrometers long, morphologically different from the previously characterized fibers of MNEI. Changes in the protein secondary structures during the aggregation process were monitored by Fourier transform infrared spectroscopy, which detected differences in the conformation of the final aggregates obtained under mechanical agitation. Moreover, soluble oligomers could be detected in the early phases of aggregation by polyacrylamide gel-electrophoresis. These findings emphasize the existence of multiple pathways of fibrillar aggregation for MNEI, which could be exploited for the design of innovative protein-based biomaterials.
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Affiliation(s)
- Masoud Delfi
- Department of Chemical Sciences, University of Naples "Federico II", Complesso Universitario Monte S. Angelo, Via Cintia, 80126 Napoli, Italy
| | - Serena Leone
- Department of Chemical Sciences, University of Naples "Federico II", Complesso Universitario Monte S. Angelo, Via Cintia, 80126 Napoli, Italy
| | - Alessandro Emendato
- Department of Chemical Sciences, University of Naples "Federico II", Complesso Universitario Monte S. Angelo, Via Cintia, 80126 Napoli, Italy
| | - Diletta Ami
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza 2, 20126 Milano, Italy
| | - Margherita Borriello
- Department of Precision Medicine, University of Campania "L. Vanvitelli", Via L. De Crecchio 7, 80138 Naples, Italy
| | - Antonino Natalello
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza 2, 20126 Milano, Italy
| | - Clara Iannuzzi
- Department of Precision Medicine, University of Campania "L. Vanvitelli", Via L. De Crecchio 7, 80138 Naples, Italy.
| | - Delia Picone
- Department of Chemical Sciences, University of Naples "Federico II", Complesso Universitario Monte S. Angelo, Via Cintia, 80126 Napoli, Italy.
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11
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Tian T, Qian T, Sui X, Yu Q, Liu Y, Liu X, Chen Y, Wang YX, Hu W. Aggregation-Dependent Photoreactive Hemicyanine Assembly as a Photobactericide. ACS APPLIED MATERIALS & INTERFACES 2020; 12:22552-22559. [PMID: 32345006 DOI: 10.1021/acsami.0c03894] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Organic materials that show substantial reactivity under visible light have received considerable attention due to their wide applications in chemical and biological systems. Hemicyanine pigments possess a strong intramolecular donor-acceptor structure and thereby display intense absorption in the visible spectral region. However, most excitons are consumed via the twisted intramolecular charge-transfer (TICT) process, making hemicyanines generally inert to light. Herein, we describe the development of an amphiphilic hemicyanine dye whose aggregation could be easily regulated using salt or counterions. More importantly, its intrinsic photoreactivity was successfully induced by steric restriction and cofacial arrangement within the H-aggregate, thus creating an effective photobactericide. This strategy could be extended to the development of photocatalysts for photosynthesis and a photosensitizer for photodynamic therapy.
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Affiliation(s)
- Tian Tian
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Tingjuan Qian
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Xinyu Sui
- Division of Nanophotonics CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Qilin Yu
- Department of Microbiology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Yingxin Liu
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Xinfeng Liu
- Division of Nanophotonics CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Yulan Chen
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Yi-Xuan Wang
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
- Joint School of National University of Singapore and Tianjin University, Fuzhou International Campus, Tianjin University, Binhai New City, Fuzhou 350207, China
| | - Wenping Hu
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
- Joint School of National University of Singapore and Tianjin University, Fuzhou International Campus, Tianjin University, Binhai New City, Fuzhou 350207, China
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12
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Khan MA, Ghosh S, Bera S, Hoque A, Sk I, Ansari SN, Mobin SM, Alam MA. Crystallographic Elucidation of Stimuli-Controlled Molecular Rotation for a Reversible Sol-Gel Transformation. J Org Chem 2020; 85:4019-4025. [PMID: 32077292 DOI: 10.1021/acs.joc.9b02944] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
To get an idea about the most probable microporous supramolecular environment in the gel state, gelator molecule 1 has been crystallized from its gelling solvent (dimethylformamide). Crystal structure analysis of 1 shows a strong π···π stacking interaction between the electron-deficient pentafluorophenyl ring and electron-rich naphthyl ring. The gelling solvent situated in the "molecular pocket" stitches the gelators through weak H-bonding interactions to facilitate the formation of an organogel. Scanning electron microscopy analysis exhibits a ribbonlike fibrous morphology that resembles the supramolecular arrangement of 1 in its crystalline state, as evidenced by powder X-ray diffraction. In the presence of external stimuli (tetrabutylammonium fluoride), the organogel of 1 disassembles into sol. This sol-gel transformation phenomenon has been explained on the basis of X-ray single-crystal analysis. Single crystals obtained from the sol state show that naphthylic -OH of 1 gets deprotonated, resulting in C-C bond rotation that plays a major role in the sol-gel transformation. Gelator 1 exhibits weak green fluorescence in the gel state, whereas it shows highly intense yellow fluorescence in the sol state. Furthermore, a reversible sol-gel transformation associated with changes in the spectroscopic properties has been observed in the presence of acids and fluoride ions, respectively.
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Affiliation(s)
- Mehebub Ali Khan
- Department of Chemistry, Aliah University, Action Area IIA/27, New Town, Kolkata 700160, India
| | - Soumen Ghosh
- Department of Chemistry, Aliah University, Action Area IIA/27, New Town, Kolkata 700160, India
| | - Sachinath Bera
- Department of Chemistry, Jadavpur University, 188, Raja S.C. Mallick Road, Kolkata 700032, India
| | - Anamika Hoque
- Department of Chemistry, Aliah University, Action Area IIA/27, New Town, Kolkata 700160, India
| | - Ismail Sk
- Department of Chemistry, Aliah University, Action Area IIA/27, New Town, Kolkata 700160, India
| | | | - Shaikh M Mobin
- Discipline of Chemistry, IIT Indore, Indore 453552, India
| | - Md Akhtarul Alam
- Department of Chemistry, Aliah University, Action Area IIA/27, New Town, Kolkata 700160, India
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13
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Koshkin AV, Medvedeva AA, Lobova NA. Changes of Spectral and Luminescent Properties of a Styryl Dye during Sol-Gel Synthesis of Silicate Hydrogel. HIGH ENERGY CHEMISTRY 2020. [DOI: 10.1134/s0018143919060110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Iannuzzi C, Borriello M, D'Agostino A, Cimini D, Schiraldi C, Sirangelo I. Protective effect of extractive and biotechnological chondroitin in insulin amyloid and advanced glycation end product-induced toxicity. J Cell Physiol 2019; 234:3814-3828. [PMID: 30256388 DOI: 10.1002/jcp.27153] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 07/10/2018] [Indexed: 01/12/2023]
Abstract
Glycosaminoglycans are extracellular matrix components related to several biological functions and diseases. Chondroitin sulfate is a sulphated glycosaminoglycan synthesized as part of proteoglycan molecules. They are frequently associated with amyloid deposits and possess an active role in amyloid fibril formation. Recently, a neuroprotective effect of extracellular matrix components against amyloid toxicity and oxidative stress has been reported. Advanced glycation end products (AGEs), the end products of the glycation reaction, have been linked to amyloid-based neurodegenerative disease as associated with oxidative stress and inflammation. In this study we have analyzed the effect of chondroitin sulfate isolated from different species, in comparison with a new biotechnological unsulfated chondroitin, in the amyloid aggregation process of insulin, as well as the ability to prevent the formation of AGEs and related toxicity. The results have showed a determining role of chondroitin sulfate groups in modulating insulin amyloid aggregation. In addition, both sulfated and unsulfated chondroitins have shown protective properties against amyloid and AGEs-induced toxicity. These data are very relevant as a protective effect of these glycosaminoglycans in the AGE-induced toxicity was never observed before. Moreover, considering the issues related to the purity and safety of chondroitin from natural sources, this study suggests a new potential application for the biotechnological chondroitin.
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Affiliation(s)
- Clara Iannuzzi
- Department of Precision Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Naples, Italy
| | - Margherita Borriello
- Department of Precision Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Naples, Italy
| | - Antonella D'Agostino
- Department of Experimental Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Naples, Italy
| | - Donatella Cimini
- Department of Experimental Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Naples, Italy
| | - Chiara Schiraldi
- Department of Experimental Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Naples, Italy
| | - Ivana Sirangelo
- Department of Precision Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Naples, Italy
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15
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Hungerford G, Lemos MA, Chu BS. Binding of Clitoria ternatea L. flower extract with α-amylase simultaneously monitored at two wavelengths using a photon streaming time-resolved fluorescence approach. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 211:108-113. [PMID: 30530062 DOI: 10.1016/j.saa.2018.11.062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 11/14/2018] [Accepted: 11/29/2018] [Indexed: 06/09/2023]
Abstract
The binding of an extract from the flowers of Clitoria ternatea L. to the digestive enzyme α-amylase was investigated. This extract is a mixture of flavonoids, including anthocyanins, and has been previously shown to inhibit the activity this enzyme. This has implications for modulating starch digestion. In order to investigate the kinetics, we made use of time-resolved fluorescence to simultaneously monitor two different emission bands emanating from the extract. This measurement was enabled by the use of a "photon streaming" approach and changes in fluorescence lifetime and intensity were used to follow the interaction. A longer wavelength band (655 nm) was ascribed to anthocyanins in the mixture and these were observed to bind at a rate an order of magnitude slower than other flavonoids present in the extract, monitored at a shorter wavelength (485 nm). Changes in the fluorescence emission of the extract upon binding were further assessed by the use of decay associated spectra.
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Affiliation(s)
| | - M Adília Lemos
- Division of Food and Drink, School of Science, Engineering and Technology, Abertay University, 40 Bell Street, Dundee DD1 1HG, UK
| | - Boon-Seang Chu
- Division of Food and Drink, School of Science, Engineering and Technology, Abertay University, 40 Bell Street, Dundee DD1 1HG, UK
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16
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17
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Liu F, Luo Y, Xu M. Viscosity measurements using a two-photon ratiometric fluorescent sensor with two rotors. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.11.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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18
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Maity S, Ray SS, Chatterjee A, Chakraborty N, Ganguly J. Sugar‐Based Self‐Assembly of Hydrogel Nanotubes Manifesting ESIPT: Theoretical Insight and Application in Live Cell Imaging. ChemistrySelect 2018. [DOI: 10.1002/slct.201800604] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Santu Maity
- Department of ChemistryIndian Institute of Engineering Science and Technology Howrah- 711103 India
| | - Suvonil Sinha Ray
- Department of ChemistryIndian Institute of Engineering Science and Technology Howrah- 711103 India
| | | | | | - Jhuma Ganguly
- Department of ChemistryIndian Institute of Engineering Science and Technology Howrah- 711103 India
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19
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Wang Z, Yang K, Li H, Yuan C, Zhu X, Huang H, Wang Y, Su L, Fang Y. In situ observation of sol-gel transition of agarose aqueous solution by fluorescence measurement. Int J Biol Macromol 2018; 112:803-808. [DOI: 10.1016/j.ijbiomac.2018.02.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Revised: 01/25/2018] [Accepted: 02/04/2018] [Indexed: 11/30/2022]
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20
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Maity S, Chatterjee A, Chakraborty N, Ganguly J. A dynamic sugar based bio-inspired, self-healing hydrogel exhibiting ESIPT. NEW J CHEM 2018. [DOI: 10.1039/c7nj04178k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A bio-inspired, self-healing chitosan-5-(benzo[d]thiazol-2-yl)-4-hydroxyisophthalaldehyde (CBTHP) fluorescent hydrogel has been developed which exhibits ultrafast ESIPT in both gel and solution phase.
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Affiliation(s)
- Santu Maity
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur
- Howrah-711103
- India
| | | | | | - Jhuma Ganguly
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur
- Howrah-711103
- India
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21
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Bobrov AV, Usoltsev SD, Marfin YS, Rumyantsev EV. Spectral Properties and Possibilities of meso-Substituted BODIPY Usage in Sol-Gel Process and Materials. J Fluoresc 2017; 28:277-284. [PMID: 29110165 DOI: 10.1007/s10895-017-2190-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 10/27/2017] [Indexed: 01/05/2023]
Abstract
Hybrid materials based on organically modified silica with immobilized boron-dipyrrins (BODIPY) dyes were obtained. Spectral characteristics of the dyes were measured during the matrix formation and in obtained materials. It was stated, that immobilization does not affect the character of the absorption and fluorescence spectra of the dye, but due to the effect of fluorescent molecular rotor observed for meso-substituted BODIPY, the fluorescent quantum yields were found to increase during the matrix sealing. Quantum yield increase is linear for all of the investigated matrices except phenyl-substituted one, where the π-π interactions of the dye molecule with matrix could be observed. This effect could be used for fine control of the matrix formation process and leads to increase of the dye emission in the final material for further practical applications. All obtained hybrid materials were found to be stable upon UV light irradiation, hence immobilization enhance the stability of the dye in comparison with the BODIPY in organic solvents.
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Affiliation(s)
- A V Bobrov
- Department of Inorganic Chemistry, Ivanovo State University of Chemistry and Technology, Ivanovo, Russia
| | - S D Usoltsev
- Department of Inorganic Chemistry, Ivanovo State University of Chemistry and Technology, Ivanovo, Russia
| | - Yu S Marfin
- Department of Inorganic Chemistry, Ivanovo State University of Chemistry and Technology, Ivanovo, Russia.
| | - E V Rumyantsev
- Department of Inorganic Chemistry, Ivanovo State University of Chemistry and Technology, Ivanovo, Russia
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22
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Haghnegahdar S, Noroozifar M. Deposition of PdPtAu Nanoparticles on Hollow Nanospheres of Fe3
O4
as a New Catalyst for Methanol Electrooxidation: Application in Direct Methanol Fuel Cell. ELECTROANAL 2017. [DOI: 10.1002/elan.201700124] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Sara Haghnegahdar
- Department of Chemistry; University of Sistan and Baluchestan; Zahedan 98135-674 Iran
| | - Meissam Noroozifar
- Department of Chemistry; University of Sistan and Baluchestan; Zahedan 98135-674 Iran
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23
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Arranja CT, Aguiar A, Encarnação T, Fonseca SM, Justino LL, Castro RA, Benniston A, Harriman A, Burrows HD, Sobral AJ. Double-tailed long chain BODIPYs - Synthesis, characterization and preliminary studies on their use as lipid fluorescence probes. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.05.119] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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24
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Ghosh R, Kushwaha A, Das D. Conformational Control of Ultrafast Molecular Rotor Property: Tuning Viscosity Sensing Efficiency by Twist Angle Variation. J Phys Chem B 2017; 121:8786-8794. [DOI: 10.1021/acs.jpcb.7b05947] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Rajib Ghosh
- Radiation
and Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Archana Kushwaha
- Department
of Chemistry, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400019, India
| | - Dipanwita Das
- Department
of Chemistry, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400019, India
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25
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Ibarra-Rodrı́guez M, Muñoz-Flores BM, Dias HVR, Sánchez M, Gomez-Treviño A, Santillan R, Farfán N, Jiménez-Pérez VM. Fluorescent Molecular Rotors of Organoboron Compounds from Schiff Bases: Synthesis, Viscosity, Reversible Thermochromism, Cytotoxicity, and Bioimaging Cells. J Org Chem 2017; 82:2375-2385. [DOI: 10.1021/acs.joc.6b02802] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Marisol Ibarra-Rodrı́guez
- Facultad
de Ciencias Químicas, Ciudad Universitaria, Universidad Autónoma de Nuevo León, 66451 San Nicolás
de los Garza, Nuevo León Mexico
| | - Blanca M. Muñoz-Flores
- Facultad
de Ciencias Químicas, Ciudad Universitaria, Universidad Autónoma de Nuevo León, 66451 San Nicolás
de los Garza, Nuevo León Mexico
| | - H. V. Rasika Dias
- Department
of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065, United States
| | - Mario Sánchez
- Centro de Investigación en Materiales Avanzados, S.C., Alianza Norte 202, PIIT, Carretera Monterrey-Aeropuerto
Km 10, CP 66628, Apodaca, Nuevo León Mexico
| | - Alberto Gomez-Treviño
- Facultad
de Ciencias Químicas, Ciudad Universitaria, Universidad Autónoma de Nuevo León, 66451 San Nicolás
de los Garza, Nuevo León Mexico
| | - Rosa Santillan
- Departamento
de Química, Centro de Investigación y de Estudios Avanzados del IPN, A.P.
14-740, CP 07000 San Pedro Zacatenco, DF, Mexico
| | - Norberto Farfán
- Facultad
de Química, Departamento de Química Orgánica, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 Mexico City, Mexico
| | - Víctor M. Jiménez-Pérez
- Facultad
de Ciencias Químicas, Ciudad Universitaria, Universidad Autónoma de Nuevo León, 66451 San Nicolás
de los Garza, Nuevo León Mexico
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26
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Suhina T, Amirjalayer S, Woutersen S, Bonn D, Brouwer AM. Ultrafast dynamics and solvent-dependent deactivation kinetics of BODIPY molecular rotors. Phys Chem Chem Phys 2017; 19:19998-20007. [DOI: 10.1039/c7cp02037f] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The fluorescent excited state of a molecular rotor based on the meso-substituted boron-dipyrromethane (BODIPY) core decays rapidly to the ground state via a conical intersection. The fluorescence is strongly increased in viscous solvents, but solvent polarity has only a small effect.
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Affiliation(s)
- Tomislav Suhina
- University of Amsterdam
- van 't Hoff Institute for Molecular Sciences
- University of Amsterdam
- 1090 GD Amsterdam
- The Netherlands
| | - Saeed Amirjalayer
- Center for Nanotechnology (CeNTech) and Physical Institute
- University of Münster
- Heisenbergstrasse 11
- 48149 Münster
- Germany
| | - Sander Woutersen
- University of Amsterdam
- van 't Hoff Institute for Molecular Sciences
- University of Amsterdam
- 1090 GD Amsterdam
- The Netherlands
| | - Daniel Bonn
- University of Amsterdam
- van der Waals-Zeeman Institute
- Institute of Physics
- University of Amsterdam
- 1090 GL Amsterdam
| | - Albert M. Brouwer
- University of Amsterdam
- van 't Hoff Institute for Molecular Sciences
- University of Amsterdam
- 1090 GD Amsterdam
- The Netherlands
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27
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Minei P, Ahmad M, Barone V, Brancato G, Passaglia E, Bottari G, Pucci A. Vapochromic Behaviour of Polycarbonate Films Doped with a Luminescent Molecular Rotor. POLYM ADVAN TECHNOL 2016; 27:429-435. [PMID: 28904520 PMCID: PMC5593119 DOI: 10.1002/pat.3688] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
We report on vapochromic films suitable for detecting volatile organic compounds (VOCs), based on polycarbonate (PC) doped with 4-(triphenylamino)phthalonitrile (TPAP), a fluorescent molecular rotor sensitive to solvent polarity and viscosity. PC films of variable thickness (from 20 up to 80 µm) and containing small amounts of TPAP (0.05 wt.%) were prepared and exposed to a saturated atmosphere of different VOCs. TPAP/PC films showed a gradual decrease and red-shift of the emission during the exposure to solvents with high polarity index and favourable interaction with the polymer matrix such as THF, CHCl3, and acetonitrile. In the case of the most interacting solvents (THF and CHCl3), TPAP/PC films also showed a fluorescence increase at longer exposure times, as a consequence of an irreversible, solvent-induced crystallization process of the polymeric matrix. The vapochromism of TPAP/PC films is rationalized on the basis of alterations of the rotor intramolecular motion upon solvent uptake by PC and polarity effects of the microenvironment. Interestingly, the fluorescence response of the TPAP/PC films shows a non-trivial, tuneable dependence on film thickness during the second solvent-exposure stage. The latter effect is attributed to a variable extent of the crystallization process occurring in the PC films. This observation promptly suggests, in turn, an effective procedure to modulate the spectroscopic response in such functionalized polymeric materials through the precise control of the film thickness.
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Affiliation(s)
- Pierpaolo Minei
- Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy
| | - Muzaffer Ahmad
- Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy
| | - Vincenzo Barone
- Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy
| | - Giuseppe Brancato
- Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy
| | - Elisa Passaglia
- Istituto di Chimica dei Composti Organo Metallici (ICCOM), Consiglio Nazionale delle Ricerche, UOS Pisa, Via G. Moruzzi 1, 56124 Pisa
| | - Giovanni Bottari
- Departamento de Química Orgánica, Universidad Autónoma de Madrid, 28049, Cantoblanco, Spain
- IMDEA-Nanociencia, Campus de Cantoblanco, C/Faraday 9, 28049 Madrid, Spain
| | - Andrea Pucci
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy
- INSTM, UdR Pisa, Via G. Moruzzi 13, 56124 Pisa Italy
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28
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Morawski O, Kozankiewicz B, Miniewicz A, Sobolewski AL. Environment-Sensitive Behavior of DCNP in Solvents with Different Viscosity, Polarity and Proticity. Chemphyschem 2015; 16:3500-10. [DOI: 10.1002/cphc.201500563] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Olaf Morawski
- Institute of Physics; Polish Academy of Sciences; Al. Lotnikow 32/46 02-668 Warsaw Poland
| | - Boleslaw Kozankiewicz
- Institute of Physics; Polish Academy of Sciences; Al. Lotnikow 32/46 02-668 Warsaw Poland
| | - Andrzej Miniewicz
- Advanced Materials Engineering and Modelling Group; Faculty of Chemistry; Wroclaw University of Technology; 50-370 Wroclaw Poland
| | - Andrzej L. Sobolewski
- Institute of Physics; Polish Academy of Sciences; Al. Lotnikow 32/46 02-668 Warsaw Poland
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29
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Vyšniauskas A, Qurashi M, Gallop N, Balaz M, Anderson HL, Kuimova MK. Unravelling the effect of temperature on viscosity-sensitive fluorescent molecular rotors. Chem Sci 2015; 6:5773-5778. [PMID: 28791085 PMCID: PMC5520772 DOI: 10.1039/c5sc02248g] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Accepted: 07/04/2015] [Indexed: 12/22/2022] Open
Abstract
We examine the effect of temperature on three viscosity-sensitive fluorophores termed ‘molecular rotors’. In the case of the conjugated porphyrin dimer, it can be used for measuring both viscosity and temperature concurrently.
Viscosity and temperature variations in the microscopic world are of paramount importance for diffusion and reactions. Consequently, a plethora of fluorescent probes have evolved over the years to enable fluorescent imaging of both parameters in biological cells. However, the simultaneous effect of both temperature and viscosity on the photophysical behavior of fluorophores is rarely considered, yet unavoidable variations in temperature can lead to significant errors in the readout of viscosity and vice versa. Here we examine the effect of temperature on the photophysical behavior of three classes of viscosity-sensitive fluorophores termed ‘molecular rotors’. For each of the fluorophores we decouple the effect of temperature from the effect of viscosity. In the case of the conjugated porphyrin dimer, we demonstrate that, uniquely, simultaneous dual-mode lifetime and intensity measurements of this fluorophore can be used for measuring both viscosity and temperature concurrently.
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Affiliation(s)
- Aurimas Vyšniauskas
- Chemistry Department , Imperial College London , Exhibition Road , SW7 2AZ , UK .
| | - Maryam Qurashi
- Chemistry Department , Imperial College London , Exhibition Road , SW7 2AZ , UK .
| | - Nathaniel Gallop
- Chemistry Department , Imperial College London , Exhibition Road , SW7 2AZ , UK .
| | - Milan Balaz
- Chemistry Department , University of Oxford , Chemistry Research Laboratory , Oxford , OX1 3TA , UK
| | - Harry L Anderson
- Chemistry Department , University of Oxford , Chemistry Research Laboratory , Oxford , OX1 3TA , UK
| | - Marina K Kuimova
- Chemistry Department , Imperial College London , Exhibition Road , SW7 2AZ , UK .
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30
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Lemos MA, Sárniková K, Bot F, Anese M, Hungerford G. Use of Time-Resolved Fluorescence to Monitor Bioactive Compounds in Plant Based Foodstuffs. BIOSENSORS 2015; 5:367-97. [PMID: 26132136 PMCID: PMC4600163 DOI: 10.3390/bios5030367] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 06/09/2015] [Accepted: 06/15/2015] [Indexed: 11/25/2022]
Abstract
The study of compounds that exhibit antioxidant activity has recently received much interest in the food industry because of their potential health benefits. Most of these compounds are plant based, such as polyphenolics and carotenoids, and there is a need to monitor them from the field through processing and into the body. Ideally, a monitoring technique should be non-invasive with the potential for remote capabilities. The application of the phenomenon of fluorescence has proved to be well suited, as many plant associated compounds exhibit fluorescence. The photophysical behaviour of fluorescent molecules is also highly dependent on their microenvironment, making them suitable probes to monitor changes in pH, viscosity and polarity, for example. Time-resolved fluorescence techniques have recently come to the fore, as they offer the ability to obtain more information, coupled with the fact that the fluorescence lifetime is an absolute measure, while steady state just provides relative and average information. In this work, we will present illustrative time-resolved measurements, rather than a comprehensive review, to show the potential of time-resolved fluorescence applied to the study of bioactive substances. The aim is to help assess if any changes occur in their form, going from extraction via storage and cooking to the interaction with serum albumin, a principal blood transport protein.
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Affiliation(s)
- M Adília Lemos
- Food & Life Sciences, School of Science, Engineering and Technology, University of Abertay Dundee, Bell Street, Dundee DD1 1HG, UK.
| | - Katarína Sárniková
- Food & Life Sciences, School of Science, Engineering and Technology, University of Abertay Dundee, Bell Street, Dundee DD1 1HG, UK.
| | - Francesca Bot
- Department of Food Science, University of Udine, Via Sondrio 2/A, 33100 Udine, Italy.
| | - Monica Anese
- Department of Food Science, University of Udine, Via Sondrio 2/A, 33100 Udine, Italy.
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31
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32
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Cesaretti A, Carlotti B, Germani R, Spalletti A, Elisei F. Inclusion of push–pull N-methylpyridinium salts within surfactant hydrogels: is their excited state intramolecular charge transfer mediated by twisting? Phys Chem Chem Phys 2015; 17:17214-20. [DOI: 10.1039/c5cp01639h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
By confining two push–pull N-methylpyridinium derivatives within the rigid domains of surfactant hydrogels, the twisted nature of their intramolecular charge transfer state (formed in water upon excitation) was unravelled.
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Affiliation(s)
- A. Cesaretti
- Department of Chemistry
- Biology and Biotechnology and Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN)
- University of Perugia
- 06123 Perugia
- Italy
| | - B. Carlotti
- Department of Chemistry
- Biology and Biotechnology and Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN)
- University of Perugia
- 06123 Perugia
- Italy
| | - R. Germani
- Department of Chemistry
- Biology and Biotechnology and Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN)
- University of Perugia
- 06123 Perugia
- Italy
| | - A. Spalletti
- Department of Chemistry
- Biology and Biotechnology and Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN)
- University of Perugia
- 06123 Perugia
- Italy
| | - F. Elisei
- Department of Chemistry
- Biology and Biotechnology and Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN)
- University of Perugia
- 06123 Perugia
- Italy
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33
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Vyšniauskas A, Balaz M, Anderson HL, Kuimova MK. Dual mode quantitative imaging of microscopic viscosity using a conjugated porphyrin dimer. Phys Chem Chem Phys 2015; 17:7548-54. [DOI: 10.1039/c5cp00439j] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
We report a deep red emitting dual viscosity sensor, which allows both the ratiometric and the lifetime imaging of viscosity.
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Affiliation(s)
| | - Milan Balaz
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
- UK
| | - Harry L. Anderson
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
- UK
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34
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Nölle JM, Jüngst C, Zumbusch A, Wöll D. Monitoring of viscosity changes during free radical polymerization using fluorescence lifetime measurements. Polym Chem 2014. [DOI: 10.1039/c3py01684f] [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
A molecular rotor with a fluorescence lifetime depending on the local viscosity of its surroundings has been successfully used as a probe to monitor local viscosity changes during the bulk radical polymerization of methyl methacrylate.
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Affiliation(s)
- Jan Martin Nölle
- Department of Chemistry
- University of Konstanz
- Universitätsstr. 10
- 78464 Konstanz
- Germany
| | - Christian Jüngst
- Department of Chemistry
- University of Konstanz
- Universitätsstr. 10
- 78464 Konstanz
- Germany
| | - Andreas Zumbusch
- Department of Chemistry
- University of Konstanz
- Universitätsstr. 10
- 78464 Konstanz
- Germany
| | - Dominik Wöll
- Department of Chemistry
- University of Konstanz
- Universitätsstr. 10
- 78464 Konstanz
- Germany
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Yan W, Peng X, Qi J, Gao J, Fan S, Wang Q, Qu J, Niu H. Dynamic fluorescence lifetime imaging based on acousto-optic deflectors. JOURNAL OF BIOMEDICAL OPTICS 2014; 19:116004. [PMID: 25375349 DOI: 10.1117/1.jbo.19.11.116004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Accepted: 10/13/2014] [Indexed: 06/04/2023]
Abstract
We report a dynamic fluorescence lifetime imaging (D-FLIM) system that is based on a pair of acousto-optic deflectors for the random regions of interest (ROI) study in the sample. The two-dimensional acousto-optic deflector devices are used to rapidly scan the femtosecond excitation laser beam across the sample, providing specific random access to the ROI. Our experimental results using standard fluorescent dyes in live cancer cells demonstrate that the D-FLIM system can dynamically monitor the changing process of the microenvironment in the ROI in live biological samples.
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Lee Y, Lee M. Volume increment effect on the photoisomerization of hemicyanine dyes in oligo(ethylene glycol)s. J Phys Chem A 2013; 117:12878-83. [PMID: 24266422 DOI: 10.1021/jp4101043] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We studied the excited-state dynamics of three hemicyanine dyes that undergo internal twisting from the localized excited state to the twisted intramolecular charge-transfer state. The dyes differ in the length of the alkyl chain in the aniline moiety and, thus, the volume of the motional moiety increases without having much of an effect on the excited-state potential surface. By employing oligo(ethylene glycol)s as a new homologous series of solvents that covers a high viscosity region, we showed that the excited-state lifetime of the hemicyanines gradually increases at any given viscosity when the size of the substituent increases. We describe our results for the solution-phase photoisomerization processes in terms of the breakdown of Stokes' law, multidimensionality, and the Hubbard relation.
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Affiliation(s)
- Youmin Lee
- Department of Chemistry and Nanoscience, Ewha Womans University , Seoul 120-750, Republic of Korea
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Holmes-Smith AS, Hollas AC, McLoskey D, Hungerford G. Viability of Saccharomyces cerevisiae incorporated within silica and polysaccharide hosts monitored via time-resolved fluorescence. Photochem Photobiol Sci 2013; 12:2186-94. [PMID: 24145860 DOI: 10.1039/c3pp50202c] [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
The viability of Saccharomyces cerevisiae in biocompatible polymers under different growth conditions and studied using time-resolved fluorescence techniques is presented. Two fluorophores, the viscosity sensitive probe 4-(4-(dimethylamino)styryl)-N-methyl-pyridiniumiodine (DASPMI) and the yeast viability stain 2-chloro-4-(2,3-dihydro-3-methyl-(benzo-1,3-thiazol-2-yl)-methylidene)-1-phenylquinolinium iodide (FUN-1) are used to elucidate information on the incorporated yeast cell viability. Variations in cell viscosity, which are indicative of the cell state, were obtained using DASPMI. Prior to observing FUN-1 in yeast cells using fluorescence lifetime imaging, its photophysics in solution and heterogeneous media were investigated. Time-resolved emission spectra were measured and analysed to associate lifetimes to the spectral emission. Preliminary results show that monitoring the fluorescence lifetime of FUN-1 may give a useful insight into cellular metabolism. The results indicate that both fluorophores may be used to monitor the entrapped yeast cell viability, which is important for in vitro studies and applications, such as that in the biofuel industry, where Saccharomyces cerevisiae are required to remain active in high ethanol environments.
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Affiliation(s)
- A Sheila Holmes-Smith
- School of Engineering and Built Environment, Glasgow Caledonian University, Cowcaddens Road, Glasgow, G4 0BA, UK.
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Volchkov VV, Khimich MN, Mel’nikov MY, Uzhinov BM. A fluorescence study of the excited-state dynamics of boron dipyrrin molecular rotors. HIGH ENERGY CHEMISTRY 2013. [DOI: 10.1134/s0018143913050147] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Loison P, Hosny NA, Gervais P, Champion D, Kuimova MK, Perrier-Cornet JM. Direct investigation of viscosity of an atypical inner membrane of Bacillus spores: a molecular rotor/FLIM study. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2013; 1828:2436-43. [PMID: 23831602 DOI: 10.1016/j.bbamem.2013.06.028] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Revised: 06/05/2013] [Accepted: 06/25/2013] [Indexed: 10/26/2022]
Abstract
We utilize the fluorescent molecular rotor Bodipy-C12 to investigate the viscoelastic properties of hydrophobic layers of bacterial spores Bacillus subtilis. The molecular rotor shows a marked increase in fluorescence lifetime, from 0.3 to 4ns, upon viscosity increase from 1 to 1500cP and can be incorporated into the hydrophobic layers within the spores from dormant state through to germination. We use fluorescence lifetime imaging microscopy to visualize the viscosity inside different compartments of the bacterial spore in order to investigate the inner membrane and relate its compaction to the extreme resistance observed during exposure of spores to toxic chemicals. We demonstrate that the bacterial spores possess an inner membrane that is characterized by a very high viscosity, exceeding 1000cP, where the lipid bilayer is likely in a gel state. We also show that this membrane evolves during germination to reach a viscosity value close to that of a vegetative cell membrane, ca. 600cP. The present study demonstrates quantitative imaging of the microscopic viscosity in hydrophobic layers of bacterial spores Bacillus subtilis and shows the potential for further investigation of spore membranes under environmental stress.
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Affiliation(s)
- Pauline Loison
- UMR PAM/Equipe PMB Université de Bourgogne/Agrosup Dijon Nord, 1 Esplanade Erasme 21000 Dijon, France
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Patil VS, Padalkar VS, Phatangare KR, Gupta VD, Seregei E, Sekar N. Novel ESIPT Fluorescein: Sensor for Blood and Viscosity. BIONANOSCIENCE 2012. [DOI: 10.1007/s12668-012-0063-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Suhling K, Levitt JA, Chung PH, Kuimova MK, Yahioglu G. Fluorescence lifetime imaging of molecular rotors in living cells. J Vis Exp 2012:2925. [PMID: 22348887 PMCID: PMC3415204 DOI: 10.3791/2925] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Diffusion is often an important rate-determining step in chemical reactions or biological processes and plays a role in a wide range of intracellular events. Viscosity is one of the key parameters affecting the diffusion of molecules and proteins, and changes in viscosity have been linked to disease and malfunction at the cellular level.1-3 While methods to measure the bulk viscosity are well developed, imaging microviscosity remains a challenge. Viscosity maps of microscopic objects, such as single cells, have until recently been hard to obtain. Mapping viscosity with fluorescence techniques is advantageous because, similar to other optical techniques, it is minimally invasive, non-destructive and can be applied to living cells and tissues. Fluorescent molecular rotors exhibit fluorescence lifetimes and quantum yields which are a function of the viscosity of their microenvironment.4,5 Intramolecular twisting or rotation leads to non-radiative decay from the excited state back to the ground state. A viscous environment slows this rotation or twisting, restricting access to this non-radiative decay pathway. This leads to an increase in the fluorescence quantum yield and the fluorescence lifetime. Fluorescence Lifetime Imaging (FLIM) of modified hydrophobic BODIPY dyes that act as fluorescent molecular rotors show that the fluorescence lifetime of these probes is a function of the microviscosity of their environment.6-8 A logarithmic plot of the fluorescence lifetime versus the solvent viscosity yields a straight line that obeys the Förster Hoffman equation.9 This plot also serves as a calibration graph to convert fluorescence lifetime into viscosity. Following incubation of living cells with the modified BODIPY fluorescent molecular rotor, a punctate dye distribution is observed in the fluorescence images. The viscosity value obtained in the puncta in live cells is around 100 times higher than that of water and of cellular cytoplasm.6,7 Time-resolved fluorescence anisotropy measurements yield rotational correlation times in agreement with these large microviscosity values. Mapping the fluorescence lifetime is independent of the fluorescence intensity, and thus allows the separation of probe concentration and viscosity effects. In summary, we have developed a practical and versatile approach to map the microviscosity in cells based on FLIM of fluorescent molecular rotors.
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Abstract
Time-resolved stimulated emission spectroscopy was employed to probe the local environment of DASPMI (4-(4-(dimethylamino)styryl)-N-methyl-pyridinium iodide) in binary solvents of different viscosity and in a sol-gel matrix. DASPMI is one of the molecules of choice to probe local environments, and the dependence of its fluorescence emission decay on viscosity has been previously used for this purpose in biological samples, solid matrices as well as in solution. The results presented in this paper show that time-resolved stimulated emission of DASPMI is a suitable means to probe the viscosity of local environments. Having the advantage of a higher time resolution, stimulated emission can provide information that is complementary to that obtained from fluorescence decay measurements, making it feasible to probe systems with lower viscosity.
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Levitt JA, Chung PH, Kuimova MK, Yahioglu G, Wang Y, Qu J, Suhling K. Fluorescence anisotropy of molecular rotors. Chemphyschem 2011; 12:662-72. [PMID: 21328515 DOI: 10.1002/cphc.201000782] [Citation(s) in RCA: 96] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2010] [Revised: 01/10/2011] [Indexed: 12/12/2022]
Abstract
We present polarization-resolved fluorescence measurements of fluorescent molecular rotors 9-(2-carboxy-2-cyanovinyl)julolidine (CCVJ), 9-(2,2-dicyanovinyl)julolidine (DCVJ), and a meso-substituted boron dipyrromethene (BODIPY-C(12)). The photophysical properties of these molecules are highly dependent on the viscosity of the surrounding solvent. The relationship between their quantum yields and the viscosity of the surrounding medium is given by an equation first described and presented by Förster and Hoffmann and can be used to determine the microviscosity of the environment around a fluorophore. Herein we evaluate the applicability of molecular rotors as probes of apparent viscosity on a microscopic scale based on their viscosity dependent fluorescence depolarization. We develop a theoretical framework, combining the Förster-Hoffmann equation with the Perrin equation and compare the dynamic ranges and usable working regimes for these dyes in terms of utilising fluorescence anisotropy as a measure of viscosity. We present polarization-resolved fluorescence spectra and steady-state fluorescence anisotropy imaging data for measurements of intracellular viscosity. We find that the dynamic range for fluorescence anisotropy for CCVJ and DCVJ is significantly lower than that of BODIPY-C(12) in the viscosity range 0.6<η<600 cP. Moreover, using steady-state anisotropy measurements to probe microviscosity in the low (<3 cP) viscosity regime, the molecular rotors can offer a better dynamic range in anisotropy compared with a rigid dye as a probe of microviscosity, and a higher total working dynamic range in terms of viscosity.
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Affiliation(s)
- James A Levitt
- Department of Physics, King's College London, Strand, London, WC2R 2LS, UK
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Shiraishi Y, Inoue T, Hirai T. Local viscosity analysis of triblock copolymer micelle with cyanine dyes as a fluorescent probe. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:17505-17512. [PMID: 20942435 DOI: 10.1021/la1028993] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The local viscosity of Pluronic F127 triblock copolymer micelles in water was determined with cyanine dyes as fluorescent probes. These dyes show very weak fluorescence at a low temperature, but show enhanced fluorescence at a temperature higher than the critical micellization temperature (T(cm)). This is because a viscous environment within the micelle suppresses the formation of a nonradiative twisted intramolecular charge transfer (TICT) excited state of the dyes. The good correlation between the fluorescence quantum yields of the dyes and the viscosity and the temperature of the media allows a determination of local viscosity of micelle based on the fluorescence quantum yields. The local viscosity of both core and corona regions of micelles increases at >T(cm) and shows a maximum at a temperature 7-9 °C higher than T(cm), and decreases at higher temperature due to the increased fluidity. The core viscosity is larger than that of the corona, and the corona viscosity increases toward the micelle center. The polymer concentration has different effects on the core and corona viscosity: the corona viscosity increases with a polymer concentration increase at the entire temperature range, whereas the core viscosity increases only at a low temperature. The corona viscosity increase is due to the condensation of a large number of polyethylene oxide (PEO) blocks. In contrast, the dehydration degree of polypropylene oxide (PPO) blocks in the core scarcely changes, and the core has a similar composition regardless of polymer concentration. The larger polymer concentration promotes a micelle formation at lower temperature where the fluidity increase is very weak, resulting in larger core viscosity.
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Affiliation(s)
- Yasuhiro Shiraishi
- Research Center for Solar Energy Chemistry and Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan.
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Powe AM, Das S, Lowry M, El-Zahab B, Fakayode SO, Geng ML, Baker GA, Wang L, McCarroll ME, Patonay G, Li M, Aljarrah M, Neal S, Warner IM. Molecular Fluorescence, Phosphorescence, and Chemiluminescence Spectrometry. Anal Chem 2010; 82:4865-94. [DOI: 10.1021/ac101131p] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Aleeta M. Powe
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Susmita Das
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Mark Lowry
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Bilal El-Zahab
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Sayo O. Fakayode
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Maxwell L. Geng
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Gary A. Baker
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Lin Wang
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Matthew E. McCarroll
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Gabor Patonay
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Min Li
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Mohannad Aljarrah
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Sharon Neal
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
| | - Isiah M. Warner
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40208, Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry, Winston-Salem State University, Winston-Salem, North Carolina 27110, Department of Chemistry, Nanoscience and Nanotechnology Institute and the Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, Department
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Yin X, Li Y, Zhu Y, Jing X, Li Y, Zhu D. A highly sensitive viscosity probe based on ferrocene-BODIPY dyads. Dalton Trans 2010; 39:9929-35. [DOI: 10.1039/c0dt00309c] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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