1
|
Dal Pra O, Daniel J, Recher G, Blanchard-Desce M, Grazon C. Two-photon Dye-Based Fluorogenic Organic Nanoparticles as Intracellular Thiols Sensors. SMALL METHODS 2024:e2400716. [PMID: 38973203 DOI: 10.1002/smtd.202400716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 06/26/2024] [Indexed: 07/09/2024]
Abstract
Optical bioimaging is an ever-growing field that benefits both from the fast progress of optical instrumentation and modalities, and from the development of light-emitting probes. The efficacy of molecular fluorescent dyes is crucial, yet hindered by limited brightness and hydrophilicity. Addressing these challenges, self-stabilized fluorogenic organic nanoparticles only made of pure dyes (dFONs) are introduced in this work. Comprising thiol-sensitive fluorogenic chromophores, these dFONs exhibit enhanced brightness exclusively in the presence of biological thiols, notably glutathione, overcoming the need for water-solubilizing moieties. Importantly, these nanoparticles demonstrate large fluorescence and one- and two-photon brightness, enabling sensitive bioimaging of intracellular thiols at micromolar concentrations. Notably, only the pristine fluorogenic nanoparticles can penetrate the cells and does not require to wash the cells before imaging, emphasizing their unique role as dye carriers, fluorogenic probes and ease of use. This work highlights the transformative potential of dFONs in advancing optical bioimaging, paving the way for the use of dFONs not just as tracers, but also now as biosensors and ultimately in the future as biomarkers.
Collapse
Affiliation(s)
- Ophélie Dal Pra
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, Talence, F-33400, France
| | - Jonathan Daniel
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, Talence, F-33400, France
| | - Gaëlle Recher
- CNRS, Univ. Bordeaux, IOGS, LP2N, UMR 5298, Talence, F-33400, France
| | | | - Chloé Grazon
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, Talence, F-33400, France
| |
Collapse
|
2
|
Tigreros A, Bedoya-Malagón C, Valencia A, Núñez-Portela M, Portilla J. Photophysical and anion sensing properties of a triphenylamine-dioxaborinine trimeric compound. RSC Adv 2023; 13:1757-1764. [PMID: 36712638 PMCID: PMC9828043 DOI: 10.1039/d2ra07498b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 12/29/2022] [Indexed: 01/11/2023] Open
Abstract
Herein, we report the synthesis and photophysical characterization of the novel tris(4-(2,2-difluoro-6-methyl-2H-1λ3,3,2λ4-dioxaborinin-4-yl)phenyl)amine trimeric probe (A2) via the reaction between triphenylamine (1), acetic anhydride, and BF3·OEt2 implying the twelve new bond formation in a one-pot manner. This highly fluorescent compound in solution (φ up to 0.91 at 572 nm) and solid state (φ = 0.24 at 571 nm) showed a better solvatofluorochromism than its analog monomeric A1 due to symmetry-broken charge transfer, which is consistent with high solvent dipolarity (SdP) response in Catalán's multiparametric regression. Notably, A2 had a high sensibility and selectivity for CN- or F- in solution (LODCN-/F- = 0.18/0.70 μM), and CN- can be discriminated from F- by the reaction of A2 with 3.0 equiv. of CN-. In addition, A2 was impregnated on filter paper to prepare test strips that were applied to naked-eye qualitative sensing of CN- or F-. Finally, the octupolar system in A2 allows for better action of two-photon excitation cross-section values when compared with that of the dipolar structure in A1. These findings provide further information for the design of new efficient two-photon absorption dyes.
Collapse
Affiliation(s)
- Alexis Tigreros
- Bioorganic Compounds Research Group, Department of Chemistry, Universidad de Los AndesCarrera 1 No. 18A-10Bogotá 111711Colombia
| | - Camilo Bedoya-Malagón
- Quantum Optics Laboratory, Department of Physics, Universidad de Los AndesCarrera 1 No. 18A-10BogotáColombia
| | - Alejandra Valencia
- Quantum Optics Laboratory, Department of Physics, Universidad de Los AndesCarrera 1 No. 18A-10BogotáColombia
| | - Mayerlin Núñez-Portela
- Quantum Optics Laboratory, Department of Physics, Universidad de Los AndesCarrera 1 No. 18A-10BogotáColombia
| | - Jaime Portilla
- Bioorganic Compounds Research Group, Department of Chemistry, Universidad de Los AndesCarrera 1 No. 18A-10Bogotá 111711Colombia
| |
Collapse
|
3
|
Nguyen LTB, Wu CL, Lin TC, Abe M. Tris(4'-Nitrobiphenyl)amine─An Octupolar Chromophore with High Two-Photon Absorption Cross-Section and Its Application for Uncaging of Calcium Ions in the Near-Infrared Region. J Org Chem 2022; 87:15888-15898. [PMID: 36356056 DOI: 10.1021/acs.joc.2c01987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Compounds with high two-photon absorption (2PA) performance in the near-infrared region have attracted great attention because of their application in the material and biological science. In this study, we have developed a simple and novel octupolar chromophore, tris(4'-nitrobiphenyl)amine 1, with three nitro peripheral groups attached to a triphenylamine core via biphenyl linkers. A mono-branched analogue 2 has also been prepared to investigate the effects of octupolar and dipolar systems on photophysical and 2PA behaviors. Compound 1, despite having a much simpler structure than the previous three-branched scaffolds, exhibits comparable σ2 values, reaching 1330 GM at 730 nm and 900 GM at 820 nm in toluene. Combined with an outstanding σ2/MW ratio (2.2 GM g-1 mol) and a high fluorescence quantum yield (0.51), 1 displays potential as a promising two-photon (2P) probe for bioimaging. Subsequently, the ethylene glycol tetraacetic acid-substituted derivatives featuring octupolar (3 and 5) or dipolar (4 and 6) character have been synthesized and their one-photon (1P) and 2P photochemical reactions have been examined. Finally, 1P- and 2P-triggered uncaging of Ca2+ from these calcium chelators has been confirmed.
Collapse
Affiliation(s)
- Linh Tran Bao Nguyen
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima, Hiroshima739-8526, Japan
| | - Cheng-Lin Wu
- Photonic Materials Research Laboratory, Department of Chemistry, National Central University, Jhong-Li District, Taoyuan City32001, Taiwan
| | - Tzu-Chau Lin
- Photonic Materials Research Laboratory, Department of Chemistry, National Central University, Jhong-Li District, Taoyuan City32001, Taiwan.,NCU-Covestro Research Center, National Central University, Jhong-Li District, Taoyuan City32001, Taiwan
| | - Manabu Abe
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima, Hiroshima739-8526, Japan.,Hiroshima University Research Center for Photo-Drug-Delivery Systems (HiU-P-DDS), Hiroshima University, Higashi-Hiroshima, Hiroshima739-8526, Japan
| |
Collapse
|
4
|
Fluorescent Multifunctional Organic Nanoparticles for Drug Delivery and Bioimaging: A Tutorial Review. Pharmaceutics 2022; 14:pharmaceutics14112498. [PMID: 36432688 PMCID: PMC9698844 DOI: 10.3390/pharmaceutics14112498] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/08/2022] [Accepted: 11/08/2022] [Indexed: 11/19/2022] Open
Abstract
Fluorescent organic nanoparticles (FONs) are a large family of nanostructures constituted by organic components that emit light in different spectral regions upon excitation, due to the presence of organic fluorophores. FONs are of great interest for numerous biological and medical applications, due to their high tunability in terms of composition, morphology, surface functionalization, and optical properties. Multifunctional FONs combine several functionalities in a single nanostructure (emission of light, carriers for drug-delivery, functionalization with targeting ligands, etc.), opening the possibility of using the same nanoparticle for diagnosis and therapy. The preparation, characterization, and application of these multifunctional FONs require a multidisciplinary approach. In this review, we present FONs following a tutorial approach, with the aim of providing a general overview of the different aspects of the design, preparation, and characterization of FONs. The review encompasses the most common FONs developed to date, the description of the most important features of fluorophores that determine the optical properties of FONs, an overview of the preparation methods and of the optical characterization techniques, and the description of the theoretical approaches that are currently adopted for modeling FONs. The last part of the review is devoted to a non-exhaustive selection of some recent biomedical applications of FONs.
Collapse
|
5
|
Rosendale M, Daniel J, Castet F, Pagano P, Verlhac JB, Blanchard-Desce M. Stealth Luminescent Organic Nanoparticles Made from Quadrupolar Dyes for Two-Photon Bioimaging: Effect of End-Groups and Core. Molecules 2022; 27:molecules27072230. [PMID: 35408628 PMCID: PMC9000497 DOI: 10.3390/molecules27072230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 03/18/2022] [Accepted: 03/21/2022] [Indexed: 11/16/2022] Open
Abstract
Molecular-based Fluorescent Organic Nanoparticles (FONs) are versatile light-emitting nano-tools whose properties can be rationally addressed by bottom-up molecular engineering. A challenging property to gain control over is the interaction of the FONs’ surface with biological systems. Indeed, most types of nanoparticles tend to interact with biological membranes. To address this limitation, we recently reported on two-photon (2P) absorbing, red to near infrared (NIR) emitting quadrupolar extended dyes built from a benzothiadiazole core and diphenylamino endgroups that yield spontaneously stealth FONs. In this paper, we expand our understanding of the structure-property relationship between the dye structure and the FONs 2P absorption response, fluorescence and stealthiness by characterizing a dye-related series of FONs. We observe that increasing the strength of the donor end-groups or of the core acceptor in the quadrupolar (D-π-A-π-D) dye structure allows for the tuning of optical properties, notably red-shifting both the emission (from red to NIR) and 2P absorption spectra while inducing a decrease in their fluorescence quantum yield. Thanks to their strong 1P and 2P absorption, all FONs whose median size varies between 11 and 28 nm exhibit giant 1P (106 M−1.cm−1) and 2P (104 GM) brightness values. Interestingly, all FONs were found to be non-toxic, exhibit stealth behaviour, and show vanishing non-specific interactions with cell membranes. We postulate that the strong hydrophobic character and the rigidity of the FONs building blocks are crucial to controlling the stealth nano-bio interface.
Collapse
|
6
|
Lescos L, Beaujean P, Tonnelé C, Aurel P, Blanchard-Desce M, Rodriguez V, de Wergifosse M, Champagne B, Muccioli L, Castet F. Self-assembling, structure and nonlinear optical properties of fluorescent organic nanoparticles in water. Phys Chem Chem Phys 2021; 23:23643-23654. [PMID: 34664043 DOI: 10.1039/d1cp03741b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Owing to their intense emission, low toxicity and solubility in aqueous medium, fluorescent organic nanoparticles (FONs) have emerged as promising alternatives to inorganic ones for the realization of exogenous probes for bioimaging applications. However, the intimate structure of FONs in solution, as well as the role played by intermolecular interactions on their optical properties, remains challenging to study. Following a recent Second-Harmonic Scattering (SHS) investigation led by two of us [Daniel et al., ACS Photonics, 2015, 2, 1209], we report herein a computational study of the structural organization and second-order nonlinear optical (NLO) properties of FONs based on dipolar chromophores incorporating a hydrophobic triphenylamine electron-donating unit and a slightly hydrophilic aldehyde electron-withdrawing unit at their extremities. Molecular dynamics simulations of the FON formation in water are associated with quantum chemical calculations, to provide insight into the molecular aggregation process, the molecular orientation of the dipolar dyes within the nanoparticles, and the dynamical behavior of their NLO properties. Moreover, the impact of intermolecular interactions on the NLO responses of the FONs is investigated by employing the tight-binding version of the recently developed simplified time-dependent density functional theory (sTD-DFT) approach, allowing the all-atom quantum mechanics treatment of nanoparticles.
Collapse
Affiliation(s)
- Laurie Lescos
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33400 Talence, France.
| | - Pierre Beaujean
- Unité de Chimie Physique Théorique et Structurale, Chemistry Department, Namur Institute of Structured Matter, University of Namur, Belgium.
| | - Claire Tonnelé
- Donostia International Physics Center (DIPC), Manuel Lardizabal Ibilbidea 4, 20018 Donostia, Euskadi, Spain
| | - Philippe Aurel
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33400 Talence, France.
| | | | - Vincent Rodriguez
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33400 Talence, France.
| | - Marc de Wergifosse
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische und Theoretische Chemie, Beringstr. 4, 53115 Bonn, Germany.
| | - Benoît Champagne
- Unité de Chimie Physique Théorique et Structurale, Chemistry Department, Namur Institute of Structured Matter, University of Namur, Belgium.
| | - Luca Muccioli
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33400 Talence, France. .,Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy.
| | - Frédéric Castet
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33400 Talence, France.
| |
Collapse
|
7
|
Rosendale M, Flores J, Paviolo C, Pagano P, Daniel J, Ferreira J, Verlhac JB, Groc L, Cognet L, Blanchard-Desce M. A Bottom-Up Approach to Red-Emitting Molecular-Based Nanoparticles with Natural Stealth Properties and their Use for Single-Particle Tracking Deep in Brain Tissue. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2006644. [PMID: 33890332 DOI: 10.1002/adma.202006644] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 01/15/2021] [Indexed: 06/12/2023]
Abstract
Fluorescent nanoparticles dedicated to bioimaging applications should possess specific properties that have to be maintained in the aqueous, reactive, and crowded biological environment. These include chemical and photostability, small size (on the scale of subcellular structures), biocompatibility, high brightness, and good solubility. The latter is a major challenge for inorganic nanoparticles, which require surface coating to be made water soluble. Molecular-based fluorescent organic nanoparticles (FONs) may prove a promising, spontaneously water-soluble alternative, whose bottom-up design allows for the fine-tuning of individual properties. Here, the critical challenge of controlling the interaction of nanoparticles with cellular membranes is addressed. This is a report on bright, size-tunable, red-emitting, naturally stealthy FONs that do not require the use of antifouling agents to impede interactions with cellular membranes. As a proof of concept, single FONs diffusing up to 150 µm deep in brain tissue are imaged and tracked.
Collapse
Affiliation(s)
- Morgane Rosendale
- Institut des Sciences Moléculaires, CNRS, Univ. Bordeaux, Bordeaux INP, UMR 5255, 351 Cours de la Libération, Talence, 33405, France
| | - Jessica Flores
- Institut des Sciences Moléculaires, CNRS, Univ. Bordeaux, Bordeaux INP, UMR 5255, 351 Cours de la Libération, Talence, 33405, France
| | - Chiara Paviolo
- LP2N, Institut d'Optique & CNRS, Univ. Bordeaux, UMR 5298, Rue François Mitterrand, Talence, 33400, France
| | - Paolo Pagano
- Institut des Sciences Moléculaires, CNRS, Univ. Bordeaux, Bordeaux INP, UMR 5255, 351 Cours de la Libération, Talence, 33405, France
| | - Jonathan Daniel
- Institut des Sciences Moléculaires, CNRS, Univ. Bordeaux, Bordeaux INP, UMR 5255, 351 Cours de la Libération, Talence, 33405, France
| | - Joana Ferreira
- Interdisciplinary Institute for Neuroscience, CNRS, Univ. Bordeaux, UMR 5297, 146 Rue Léo Saignat, Bordeaux, 33076, France
| | - Jean-Baptiste Verlhac
- Institut des Sciences Moléculaires, CNRS, Univ. Bordeaux, Bordeaux INP, UMR 5255, 351 Cours de la Libération, Talence, 33405, France
| | - Laurent Groc
- Interdisciplinary Institute for Neuroscience, CNRS, Univ. Bordeaux, UMR 5297, 146 Rue Léo Saignat, Bordeaux, 33076, France
| | - Laurent Cognet
- LP2N, Institut d'Optique & CNRS, Univ. Bordeaux, UMR 5298, Rue François Mitterrand, Talence, 33400, France
| | - Mireille Blanchard-Desce
- Institut des Sciences Moléculaires, CNRS, Univ. Bordeaux, Bordeaux INP, UMR 5255, 351 Cours de la Libération, Talence, 33405, France
| |
Collapse
|
8
|
Wang C, Bai T, Liu ZD. The crystal structure of ethyl 5-(4-(diphenylamino)phenyl)thiophene-2-carboxylate, C 25H 21NO 2S. Z KRIST-NEW CRYST ST 2020. [DOI: 10.1515/ncrs-2019-0725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C25H21NO2S, monoclinic, P21/n (no. 14), a = 8.21802(18) Å, b = 7.42687(17) Å, c = 34.2757(8) Å, β = 91.149(2)°, V = 2091.57(8) Å3, Z = 4, R
gt(F) = 0.0388, wR
ref(F
2) = 0.1337, T = 293(2) K.
Collapse
Affiliation(s)
- Chang Wang
- Department of Chemical and Materials Engineering , Fuyang Normal University , Fuyang, Anhui 236041 , China
| | - Tao Bai
- Department of Chemical and Materials Engineering , Fuyang Normal University , Fuyang, Anhui 236041 , China
| | - Zhaod-Di Liu
- Department of Chemical and Materials Engineering , Fuyang Normal University , Fuyang, Anhui 236041 , China
| |
Collapse
|
9
|
Huo J, Li H, Yu D, Arulsamy N. Three New Metal Complexes with Imidazole-Containing Tripodal Ligands as Fluorophores for Nitroaromatics- and Ion-Selective Sensing. Inorganica Chim Acta 2020; 502:119310. [PMID: 32863422 PMCID: PMC7453589 DOI: 10.1016/j.ica.2019.119310] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Three new metal-organic complexes [Cd(TIPA)(suc)0.5(NO3)·1/2H2O]n (1), [Ni(TIPA)(tda)0.5(H2O)·1/4H2O]n (2) and [Cd(TIPA)(tda)0.5·11/2H2O] (3) were synthesized via rigid tripodal ligand tris(4-(1H-imidazol-1-yl)phenyl)amine (TIPA) and three dicarboxylic acids; either succinic acid (H2suc) or 2,5-thiophenedicarboxylic acid (H2tda). Crystallographic data for 1 - 3 reveal three-dimensional (3D) networks and channels in the structures. The structure of 2 is unique featuring an interpenetrating 2D network, 2D + 2D → 3D, with the two associated 2D networks existing in two opposite spiral channels. TGA plots exhibit a loss of mass corresponding to the loss of the solvated water molecules in the 100 - 200 °C temperature region and begin to lose additional fragments only at T > 300 °C revealing the robust nature of the 3D framework in the complexes. The metal-organic frameworks (MOFs) are screened for their potential application in the detection and removal of environmentally hazardous industrial pollutants. Fluorescence emission spectra for 1 and 2 show that the two MOFs are capable of sensing nitrobenzene (NB), with the nickel complex 2 exhibiting significantly higher sensing ability. Powder XRD data measured for 1 and 2 and those of NB-treated 1 and 2 show significant differences in their patterns, providing further support for the strong interaction between the MOF complexes and NB. The fluorescence emission observed for 1 is more effectively quenched by the presence of Fe3+ than the series of 17 other metal ions investigated. Complex 3 possesses some ability to adsorb inorganic pollutants.
Collapse
Affiliation(s)
- Jianqiang Huo
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Haiqiang Li
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Donghui Yu
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Navamoney Arulsamy
- Department of Chemistry, 1000 E. University AVE, University of Wyoming, Laramie, WY 82071-2000, USA
| |
Collapse
|
10
|
Pagidi S, Kalluvettukuzhy NK, Thilagar P. Effect of Branching on the Delayed Fluorescence and Phosphorescence of Simple Borylated Arylamines. Inorg Chem 2020; 59:3142-3151. [DOI: 10.1021/acs.inorgchem.9b03446] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Sudhakar Pagidi
- Department of Inorganic and Physical Chemistry, Indian Institute of Science (IISc), Bangalore 560012, India
| | - Neena K. Kalluvettukuzhy
- Department of Inorganic and Physical Chemistry, Indian Institute of Science (IISc), Bangalore 560012, India
| | - Pakkirisamy Thilagar
- Department of Inorganic and Physical Chemistry, Indian Institute of Science (IISc), Bangalore 560012, India
| |
Collapse
|
11
|
Chen H, Yang P, Li Y, Zhang L, Ding F, He X, Shen J. Insight into triphenylamine and coumarin serving as copper (II) sensors with "OFF" strategy and for bio-imaging in living cells. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 224:117384. [PMID: 31336321 DOI: 10.1016/j.saa.2019.117384] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 07/10/2019] [Accepted: 07/12/2019] [Indexed: 06/10/2023]
Abstract
Chemosensing is one of the widest and powerful techniques for response to anions and cations in living systems serving as bio-probes. Meanwhile, copper(II) (Cu(II)) widely exists in the environment and the human body as a common trace element, which plays an necessary role in most physiological processes. Thus, it is extremely urgent to explore means for effective, rapid and convenient detection of Cu(II) in living cells. Herein, we introduce a novel strategy for designing triphenylamine (TS) and coumarin-based (CS) functional sensors for Cu(II) detection with fluorescence "OFF" switching mechanism by blocking intramolecular charge transfer (ICT). Based on this design strategy, we have demonstrated two kinds of fluorophores sensors with aunique new fluorescent dye and excellent photophysical properties, which have shown rapid recognition of Cu(II) via a stoichiometric ratio of 2:1 and the proposed binding mode was confirmed by the single-crystal structure of CS-Cu(II) complex. In addition, we have carried out density functional theory (DFT) calculation with the B3LYP exchange functional employing RB3LYP/6-31G basis sets to get insight into the mechanism of Cu(II)-sensors alongside their optical properties. Furthermore, the sensors were capable of bio-imaging Cu(II) in living cancer cells (HepG2, A549 and Hela) with low cytotoxicity and good biocompatibility shown. Taken together, We expect that this novel strategy would provide new insight into the development of Cu(II) detection techniques and could be used more for biomedical applications.
Collapse
Affiliation(s)
- Hong Chen
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China; Luoyang Key Laboratory of Organic Functional Molecules, College of Food and Drug, Luoyang Normal University, Luoyang, Henan 471934, China
| | - Ping Yang
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou 510070, China
| | - Yahui Li
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Lilei Zhang
- College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, Henan 471934, China
| | - Feng Ding
- Department of Microbiology & Immunology, School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Xiaojun He
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Jianliang Shen
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China; Wenzhou Institute of Biomaterials and Engineering, Chinese Academy of Science, Wenzhou, Zhejiang 325001, China.
| |
Collapse
|
12
|
Griesbeck S, Michail E, Rauch F, Ogasawara H, Wang C, Sato Y, Edkins RM, Zhang Z, Taki M, Lambert C, Yamaguchi S, Marder TB. The Effect of Branching on the One- and Two-Photon Absorption, Cell Viability, and Localization of Cationic Triarylborane Chromophores with Dipolar versus Octupolar Charge Distributions for Cellular Imaging. Chemistry 2019; 25:13164-13175. [PMID: 31322301 PMCID: PMC6857003 DOI: 10.1002/chem.201902461] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Indexed: 12/04/2022]
Abstract
Two different chromophores, namely a dipolar and an octupolar system, were prepared and their linear and nonlinear optical properties as well as their bioimaging capabilities were compared. Both contain triphenylamine as the donor and a triarylborane as the acceptor, the latter modified with cationic trimethylammonio groups to provide solubility in aqueous media. The octupolar system exhibits a much higher two-photon brightness, and also better cell viability and enhanced selectivity for lysosomes compared with the dipolar chromophore. Furthermore, both dyes were applied in two-photon excited fluorescence (TPEF) live-cell imaging.
Collapse
Affiliation(s)
- Stefanie Griesbeck
- Institut für Anorganische Chemie, and Institute for Sustainable Chemistry, & Catalysis with BoronJulius-Maximilians-Universität Würzburg97074WürzburgGermany
| | - Evripidis Michail
- Institut für Organische ChemieJulius-Maximilians-Universität Würzburg97074WürzburgGermany
| | - Florian Rauch
- Institut für Anorganische Chemie, and Institute for Sustainable Chemistry, & Catalysis with BoronJulius-Maximilians-Universität Würzburg97074WürzburgGermany
| | - Hiroaki Ogasawara
- Institute of Transformative Bio-MoleculesNagoya UniversityNagoyaJapan
| | - Chenguang Wang
- Institute of Transformative Bio-MoleculesNagoya UniversityNagoyaJapan
| | - Yoshikatsu Sato
- Institute of Transformative Bio-MoleculesNagoya UniversityNagoyaJapan
| | - Robert M. Edkins
- Institut für Anorganische Chemie, and Institute for Sustainable Chemistry, & Catalysis with BoronJulius-Maximilians-Universität Würzburg97074WürzburgGermany
- Department of Pure & Applied ChemistryUniversity of StrathclydeGlasgowUK
| | - Zuolun Zhang
- Institut für Anorganische Chemie, and Institute for Sustainable Chemistry, & Catalysis with BoronJulius-Maximilians-Universität Würzburg97074WürzburgGermany
- State Key Laboratory of Supramolecular Structure and MaterialsCollege of ChemistryJilin UniversityQianjin StreetChangchunP. R. China
| | - Masayasu Taki
- Institute of Transformative Bio-MoleculesNagoya UniversityNagoyaJapan
| | - Christoph Lambert
- Institut für Organische ChemieJulius-Maximilians-Universität Würzburg97074WürzburgGermany
| | | | - Todd B. Marder
- Institut für Anorganische Chemie, and Institute for Sustainable Chemistry, & Catalysis with BoronJulius-Maximilians-Universität Würzburg97074WürzburgGermany
| |
Collapse
|
13
|
He T, Qiu X, Li J, Pang G, Wu Z, Cheng J, Zhou Z, Hao J, Liu H, Ni Y, Li L, Lin X, Hu W, Wang K, Chen R. Water-soluble chiral CdSe/CdS dot/rod nanocrystals for two-photon fluorescence lifetime imaging and photodynamic therapy. NANOSCALE 2019; 11:15245-15252. [PMID: 31385580 DOI: 10.1039/c9nr04508b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Compared with traditional organic contrast agents, semiconductor nanocrystals (NCs) have unique optical properties that are vital for biological applications with ultrahigh sensitivities, such as long fluorescence lifetime and large multiphoton absorption (MPA). However, the MPA properties and biological applications of chiral-ligand-stabilized semiconductor NCs have scarcely been reported, which seriously hinders their relevant applications. In this work, we report the aqueous phase transfer of CdSe/CdS dot/rod NCs with the use of cysteine molecules, after which the NCs preserve their high fluorescence quantum yield, long lifetime, and efficient circular dichroism. More importantly, the investigated dot/rod NCs show extremely large two- and three-photon absorption action cross-sections in the first and second biological windows, with maximum values of ∼21 000 GM at 800 nm and ∼4.6 × 10-78 cm6 s2 per photon2 at 1300 nm, which are among the largest values reported for water-soluble fluorescent nanoparticles. Interestingly, the dot/rod NCs exhibit a high singlet oxygen generation efficiency of 35%. In addition, for the first time, two-photon fluorescence lifetime imaging and photodynamic therapy of the dot/rod NCs were successfully demonstrated. The performed investigation of the optical properties of these water-soluble CdSe/CdS dot/rod NCs indicates that they are promising candidates for nonlinear biological imaging applications.
Collapse
Affiliation(s)
- Tingchao He
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
14
|
Achelle S, Rodríguez-López J, Larbani M, Plaza-Pedroche R, Robin-le Guen F. Carbazole- and Triphenylamine-Substituted Pyrimidines: Synthesis and Photophysical Properties. Molecules 2019; 24:E1742. [PMID: 31060299 PMCID: PMC6540165 DOI: 10.3390/molecules24091742] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 04/23/2019] [Accepted: 05/03/2019] [Indexed: 12/12/2022] Open
Abstract
A series of pyrimidine derivatives bearing one, two or three triphenylamine/9-ethylcarbazole substituents has been synthesized by Suzuki cross-coupling reaction. All compounds showed absorption bands in the UV region and the emission of violet-blue light upon irradiation. Protonation led to quenching of the fluorescence, although some derivatives remained luminescent with the appearance of a new red-shifted band in the spectra. Accurate control of the amount of acid enabled white photoluminescence to be obtained both in solution and in solid state.
Collapse
Affiliation(s)
- Sylvain Achelle
- Université de Rennes, CNRS, Institut des Sciences Chimiques de Rennes-UMR 6226, F 35000 Rennes, France.
| | - Julián Rodríguez-López
- Área de Química Orgánica, Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La-Mancha, Avda. Camillo José Cela 10, 13071 Ciudad Real, Spain.
| | - Massinissa Larbani
- Université de Rennes, CNRS, Institut des Sciences Chimiques de Rennes-UMR 6226, F 35000 Rennes, France.
| | - Rodrigo Plaza-Pedroche
- Área de Química Orgánica, Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La-Mancha, Avda. Camillo José Cela 10, 13071 Ciudad Real, Spain.
| | - Françoise Robin-le Guen
- Université de Rennes, CNRS, Institut des Sciences Chimiques de Rennes-UMR 6226, F 35000 Rennes, France.
| |
Collapse
|
15
|
Adelizzi B, Rösch AT, van Rijen DJ, Martire RS, Esiner S, Lutz M, Palmans ARA, Meijer EW. Chiral Aggregates of Triphenylamine‐Based Dyes for Depleting the Production of Hydrogen Peroxide in the Photochemical Water‐Splitting Process. Helv Chim Acta 2019. [DOI: 10.1002/hlca.201900065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Beatrice Adelizzi
- Laboratory of Macromolecular and Organic ChemistryEindhoven University of Technology P.O. Box 513 NL-5600 MB Eindhoven The Netherlands
- Institute for Complex Molecular SystemsEindhoven University of Technology The Netherlands
| | - Andreas T. Rösch
- Laboratory of Macromolecular and Organic ChemistryEindhoven University of Technology P.O. Box 513 NL-5600 MB Eindhoven The Netherlands
- Institute for Complex Molecular SystemsEindhoven University of Technology The Netherlands
| | - Daan J. van Rijen
- Laboratory of Macromolecular and Organic ChemistryEindhoven University of Technology P.O. Box 513 NL-5600 MB Eindhoven The Netherlands
- Institute for Complex Molecular SystemsEindhoven University of Technology The Netherlands
| | - R. Simone Martire
- Laboratory of Macromolecular and Organic ChemistryEindhoven University of Technology P.O. Box 513 NL-5600 MB Eindhoven The Netherlands
- Institute for Complex Molecular SystemsEindhoven University of Technology The Netherlands
| | - Serkan Esiner
- Laboratory of Macromolecular and Organic ChemistryEindhoven University of Technology P.O. Box 513 NL-5600 MB Eindhoven The Netherlands
- Institute for Complex Molecular SystemsEindhoven University of Technology The Netherlands
| | - Martin Lutz
- Crystal and Structural Chemistry, Bijvoet Center for Biomolecular ResearchUtrecht University Padualaan 8 NL-3584 CH Utrecht The Netherlands
| | - Anja R. A. Palmans
- Laboratory of Macromolecular and Organic ChemistryEindhoven University of Technology P.O. Box 513 NL-5600 MB Eindhoven The Netherlands
- Institute for Complex Molecular SystemsEindhoven University of Technology The Netherlands
| | - E. W. Meijer
- Laboratory of Macromolecular and Organic ChemistryEindhoven University of Technology P.O. Box 513 NL-5600 MB Eindhoven The Netherlands
- Institute for Complex Molecular SystemsEindhoven University of Technology The Netherlands
| |
Collapse
|
16
|
Okda HE, El Sayed S, Ferreira RCM, Gonçalves RCR, Costa SPG, M. Raposo MM, Martínez-Máñez R, Sancenón F. N, N-Diphenylanilino-heterocyclic aldehyde-based chemosensors for UV-vis/NIR and fluorescence Cu( ii) detection. NEW J CHEM 2019. [DOI: 10.1039/c9nj00880b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Cu(ii) coordination with aldehyde-containing probes induced the appearance of NIR bands coupled with remarkable colour changes.
Collapse
Affiliation(s)
- Hazem Essam Okda
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM)
- Universitat Politècnica de València
- Universitat de València
- Spain
- Departamento de Química
| | - Sameh El Sayed
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM)
- Universitat Politècnica de València
- Universitat de València
- Spain
- Departamento de Química
| | | | | | | | | | - Ramón Martínez-Máñez
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM)
- Universitat Politècnica de València
- Universitat de València
- Spain
- Departamento de Química
| | - Félix Sancenón
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM)
- Universitat Politècnica de València
- Universitat de València
- Spain
- Departamento de Química
| |
Collapse
|
17
|
Svechkarev D, Mohs AM. Organic Fluorescent Dye-based Nanomaterials: Advances in the Rational Design for Imaging and Sensing Applications. Curr Med Chem 2019; 26:4042-4064. [PMID: 29484973 PMCID: PMC6703954 DOI: 10.2174/0929867325666180226111716] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 12/08/2017] [Accepted: 12/13/2017] [Indexed: 12/28/2022]
Abstract
Self-assembled fluorescent nanomaterials based on small-molecule organic dyes are gaining increasing popularity in imaging and sensing applications over the past decade. This is primarily due to their ability to combine spectral properties tunability and biocompatibility of small molecule organic fluorophores with brightness, chemical and colloidal stability of inorganic materials. Such a unique combination of features comes with rich versatility of dye-based nanomaterials: from aggregates of small molecules to sophisticated core-shell nanoarchitectures involving hyperbranched polymers. Along with the ongoing discovery of new materials and better ways of their synthesis, it is very important to continue systematic studies of fundamental factors that regulate the key properties of fluorescent nanomaterials: their size, polydispersity, colloidal stability, chemical stability, absorption and emission maxima, biocompatibility, and interactions with biological interfaces. In this review, we focus on the systematic description of various types of organic fluorescent nanomaterials, approaches to their synthesis, and ways to optimize and control their characteristics. The discussion is built on examples from reports on recent advances in the design and applications of such materials. Conclusions made from this analysis allow a perspective on future development of fluorescent nanomaterials design for biomedical and related applications.
Collapse
Affiliation(s)
- Denis Svechkarev
- University of Nebraska Medical Center, Department of Pharmaceutical Sciences, Fred and Pamela Buffett Cancer Center, Omaha, United States
| | - Aaron M. Mohs
- University of Nebraska Medical Center, Department of Pharmaceutical Sciences, Fred and Pamela Buffett Cancer Center, Omaha, United States
| |
Collapse
|
18
|
Kournoutas F, Seintis K, Karakostas N, Tydlitát J, Achelle S, Pistolis G, Bureš F, Fakis M. Photophysical and Protonation Time Resolved Studies of Donor–Acceptor Branched Systems With Pyridine Acceptors. J Phys Chem A 2018; 123:417-428. [DOI: 10.1021/acs.jpca.8b08628] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Fotis Kournoutas
- Department of Physics, University of Patras, Greece, GR-26504 Patras, Greece
| | - Kostas Seintis
- Department of Physics, University of Patras, Greece, GR-26504 Patras, Greece
| | - Nikolaos Karakostas
- NCSR “Demokritos” Institute of Nanosciences and Nanotechnology (INN), 153 10 Athens, Greece
| | - Jiří Tydlitát
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice 532 10, Czech Republic
| | - Sylvain Achelle
- University of Rennes CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, F-35000 Rennes, France
| | - George Pistolis
- NCSR “Demokritos” Institute of Nanosciences and Nanotechnology (INN), 153 10 Athens, Greece
| | - Filip Bureš
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice 532 10, Czech Republic
| | - Mihalis Fakis
- Department of Physics, University of Patras, Greece, GR-26504 Patras, Greece
| |
Collapse
|
19
|
Ardizzone A, Kurhuzenkau S, Illa-Tuset S, Faraudo J, Bondar M, Hagan D, Van Stryland EW, Painelli A, Sissa C, Feiner N, Albertazzi L, Veciana J, Ventosa N. Nanostructuring Lipophilic Dyes in Water Using Stable Vesicles, Quatsomes, as Scaffolds and Their Use as Probes for Bioimaging. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1703851. [PMID: 29573545 DOI: 10.1002/smll.201703851] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Revised: 01/17/2018] [Indexed: 06/08/2023]
Abstract
A new kind of fluorescent organic nanoparticles (FONs) is obtained using quatsomes (QSs), a family of nanovesicles proposed as scaffolds for the nanostructuration of commercial lipophilic carbocyanines (1,1'-dioctadecyl-3,3,3',3'-tetramethyl-indocarbocyanine perchlorate (DiI), 1,1'-dioctadecyl-3,3,3',3'-tetramethyl-indodicarbocyanine perchlorate (DiD), and 1,1'-dioctadecyl-3,3,3',3'-tetramethyl-indotricarbocyanine iodide (DiR)) in aqueous media. The obtained FONs, prepared by a CO2 -based technology, show excellent colloidal- and photostability, outperforming other nanoformulations of the dyes, and improve the optical properties of the fluorophores in water. Molecular dynamics simulations provide an atomistic picture of the disposition of the dyes within the membrane. The potential of QSs for biological imaging is demonstrated by performing superresolution microscopy of the DiI-loaded vesicles in vitro and in cells. Therefore, fluorescent QSs constitute an appealing nanomaterial for bioimaging applications.
Collapse
Affiliation(s)
- Antonio Ardizzone
- Institut Ciencia Materials Barcelona (ICMAB-CSIC)-CIBER-BBN, Campus Universitari de Bellaterra, 08193, Cerdanyola, Spain
| | - Siarhei Kurhuzenkau
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area Delle Scienze 17/A, 43124, Parma, Italy
| | | | - Jordi Faraudo
- Institut Ciencia Materials Barcelona (ICMAB-CSIC)-CIBER-BBN, Campus Universitari de Bellaterra, 08193, Cerdanyola, Spain
| | - Mykhailo Bondar
- Institute of Physics, National Academy of Sciences of Ukraine, Prospect Nauky 46, Kyiv, 03028, Ukraine
| | - David Hagan
- The College of Optics and Photonics (CREOL), University of Central Florida, P.O. Box 162700, Orlando, FL, 32816-2700, USA
| | - Eric W Van Stryland
- The College of Optics and Photonics (CREOL), University of Central Florida, P.O. Box 162700, Orlando, FL, 32816-2700, USA
| | - Anna Painelli
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area Delle Scienze 17/A, 43124, Parma, Italy
| | - Cristina Sissa
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area Delle Scienze 17/A, 43124, Parma, Italy
| | - Natalia Feiner
- Institute for Bioengineering of Catalonia (IBEC), Parc Cientìfic de Barcelona (PCB), 08028, Barcelona, Spain
| | - Lorenzo Albertazzi
- Institute for Bioengineering of Catalonia (IBEC), Parc Cientìfic de Barcelona (PCB), 08028, Barcelona, Spain
| | - Jaume Veciana
- Institut Ciencia Materials Barcelona (ICMAB-CSIC)-CIBER-BBN, Campus Universitari de Bellaterra, 08193, Cerdanyola, Spain
| | - Nora Ventosa
- Institut Ciencia Materials Barcelona (ICMAB-CSIC)-CIBER-BBN, Campus Universitari de Bellaterra, 08193, Cerdanyola, Spain
| |
Collapse
|
20
|
Svechkarev D, Kyrychenko A, Payne WM, Mohs AM. Development of colloidally stable carbazole-based fluorescent nanoaggregates. J Photochem Photobiol A Chem 2018; 352:55-64. [PMID: 29430162 PMCID: PMC5802425 DOI: 10.1016/j.jphotochem.2017.10.042] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Fluorescent nanomaterials require high colloidal stability for effective use in imaging and sensing applications. We herein report the synthesis of carbazole-based organic fluorescent nanoaggregates, and demonstrate the superior colloidal stability of alkyl-substituted dye aggregates over their non-alkylated analogs. The role of alkyl chains in self-assembly and stability of such nanoaggregates is discussed based on both experimental and molecular dynamics simulation data, and spectral characteristics of the precursor dyes and their aggregates are described. The obtained results provide new insights on development of colloidally stable organic fluorescent nanomaterials with low polydispersity.
Collapse
Affiliation(s)
- Denis Svechkarev
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, 986858 Nebraska Medical Center, Omaha, NE 68198-6858, United States
| | - Alexander Kyrychenko
- Institute for Chemistry, V. N. Karazin Kharkiv National University, 4 Svobody Square, 61022 Kharkiv, Ukraine
| | - William M. Payne
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, 986858 Nebraska Medical Center, Omaha, NE 68198-6858, United States
| | - Aaron M. Mohs
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, 986858 Nebraska Medical Center, Omaha, NE 68198-6858, United States
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, 986858 Nebraska Medical Center, Omaha, NE 68198-6858, United States
- Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, 986858 Nebraska Medical Center, Omaha, NE 68198-6858, United States
| |
Collapse
|
21
|
Sanyal S, Painelli A, Pati SK, Terenziani F, Sissa C. Aggregates of quadrupolar dyes for two-photon absorption: the role of intermolecular interactions. Phys Chem Chem Phys 2018; 18:28198-28208. [PMID: 27722590 DOI: 10.1039/c6cp05153g] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We present a theoretical investigation of small aggregates of quadrupolar (A-π-D-π-A or D-π-A-π-D) charge-transfer dyes, with attention focused on the role of intermolecular interactions in determining their optical properties. We tackle the theoretical issue by adopting essential-state models (ESMs), which describe an isolated molecule in terms of a minimal number of electronic states, corresponding to the resonance structures. ESMs quite naturally describe intermolecular interactions relaxing the dipolar approximation and accounting for molecular polarizabilities. The approach is applied to curcuminoid and squaraine dyes, two families of chromophores with weak and strong quadrupolar character, respectively. The method is validated against experiment and for curcuminoids also against time-dependent density functional theory. ESMs rationalize the strong ultra-excitonic effects recurrently observed in the experimental optical spectra of aggregates of highly polarizable quadrupolar dyes, offering a valuable tool to exploit the supramolecular design of material properties.
Collapse
Affiliation(s)
- S Sanyal
- Dipartimento di Chimica, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - A Painelli
- Dipartimento di Chimica, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - S K Pati
- Theoretical Sciences Unit and New Chemistry Unit, JNCASR, Jakkur P. O., Bangalore 560064, India
| | - F Terenziani
- Dipartimento di Chimica, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - C Sissa
- Dipartimento di Chimica, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| |
Collapse
|
22
|
Çatal E, Keleş E, Seferoğlu N, Achelle S, Barsella A, Robin le Guen F, Seferoğlu Z. Triphenylamine-based allylidenemalononitrile chromophores: synthesis, and photophysical and second-order nonlinear optical properties. NEW J CHEM 2018. [DOI: 10.1039/c8nj02794c] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A series of NLO chromophores based on a mono-, di- or tri-substituted triphenylamine core and allylidenemalononitrile fragments has been designed.
Collapse
Affiliation(s)
- Emine Çatal
- Gazi University
- Department of Chemistry
- Ankara
- Turkey
| | - Ergin Keleş
- Gazi University
- Department of Chemistry
- Ankara
- Turkey
| | - Nurgül Seferoğlu
- Gazi University
- Advanced Technology Department
- Inst. Sci. & Technol
- Ankara
- Turkey
| | - Sylvain Achelle
- Univ. Rennes
- CNRS
- Institut des Sciences Chimiques de Rennes – UMR6226
- F 35000 Rennes
- France
| | - Alberto Barsella
- Département d’Optique Ultra-Rapide et Nanophotonique
- IPCMS
- UMR CNRS 7504
- Université de Strasbourg
- 67034 Strasbourg Cedex 2
| | | | | |
Collapse
|
23
|
Parthasarathy V, Pandey R, Das PK, Castet F, Blanchard-Desce M. Linear and Nonlinear Optical Properties of Tricyanopropylidene-Based Merocyanine Dyes: Synergistic Experimental and Theoretical Investigations. Chemphyschem 2017; 19:187-197. [DOI: 10.1002/cphc.201701143] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Venkatakrishnan Parthasarathy
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600 036 India
- Chimie et Photonique Moléculaire (CNRS, UMR 6510); Université de Rennes 1; 35042 Rennes France
| | - Ravindra Pandey
- Department of Inorganic and Physical Chemistry; Indian Institute of Science; Bangalore 560012 India
- Department of Spectroscopy; Indian Association for the Cultivation of Science, Jadavpur; Kolkata 700032 India
| | - Puspendu Kumar Das
- Department of Inorganic and Physical Chemistry; Indian Institute of Science; Bangalore 560012 India
| | - Frédéric Castet
- University of Bordeaux; Institut des Sciences Moléculaires (CNRS, UMR 5255); 33405 Talence France
| | - Mireille Blanchard-Desce
- Chimie et Photonique Moléculaire (CNRS, UMR 6510); Université de Rennes 1; 35042 Rennes France
- University of Bordeaux; Institut des Sciences Moléculaires (CNRS, UMR 5255); 33405 Talence France
| |
Collapse
|
24
|
Roy B, Noguchi T, Yoshihara D, Yamamoto T, Sakamoto J, Shinkai S. Amplified fluorescence emission of bolaamphiphilic perylene-azacrown ether derivatives directed towards molecular recognition events. Phys Chem Chem Phys 2017; 18:13239-45. [PMID: 27118684 DOI: 10.1039/c6cp01545j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Long-term creative approaches have been considered in the design of molecular probes to overcome the quenching effect of important dyes in an aqueous medium. Using the rational donor-acceptor based design principle, we demonstrate herein the different fluorescence states of a non-conjugated symmetrical perylene-azacrown ether system in a solution, from the molecular to the aggregated states. The ethylene-spacer is exceptionally capable of fluorescence enhancement, even in the aggregated state (organic nanoparticle, ONPs, 44 nm), overcoming the quenching effect on changing the solvent from tetrahydrofuran to water. The ONPs with crown ether receptors at the surface show colloidal stability in an aqueous solution. Furthermore, an improved fluorescent state is developed via ONPs-polymer (protamine, Pro) hybridization. Supramolecular interactions between the crown ring and the guanidinium group in Pro play an important role in the ONPs-Pro hybrid formation. The decorated fluorescent hybrid state is finally used as a nano-probe for sensing heparin via the turn-OFF mechanism. The decoration method is further generalized by recognition of the nucleotides. Herein, we detail the bottom-up approach to the molecular design and development of the different fluorescent states of a useful probe. Most excitingly, this new approach is very general and adaptive to facile detection.
Collapse
Affiliation(s)
- Bappaditya Roy
- Institute for Advanced Study, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Takao Noguchi
- Institute for Advanced Study, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan. and Nanotechnology Laboratory, Institute of Systems, Information Technologies and Nanotechnologies (ISIT), 4-1 Kyudai-Shinmachi, Nishi-ku, Fukuoka 819-0388, Japan
| | - Daisuke Yoshihara
- Nanotechnology Laboratory, Institute of Systems, Information Technologies and Nanotechnologies (ISIT), 4-1 Kyudai-Shinmachi, Nishi-ku, Fukuoka 819-0388, Japan
| | - Tatsuhiro Yamamoto
- Nanotechnology Laboratory, Institute of Systems, Information Technologies and Nanotechnologies (ISIT), 4-1 Kyudai-Shinmachi, Nishi-ku, Fukuoka 819-0388, Japan
| | - Junji Sakamoto
- Nanotechnology Laboratory, Institute of Systems, Information Technologies and Nanotechnologies (ISIT), 4-1 Kyudai-Shinmachi, Nishi-ku, Fukuoka 819-0388, Japan
| | - Seiji Shinkai
- Institute for Advanced Study, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan. and Nanotechnology Laboratory, Institute of Systems, Information Technologies and Nanotechnologies (ISIT), 4-1 Kyudai-Shinmachi, Nishi-ku, Fukuoka 819-0388, Japan and Department of Nanoscience, Faculty of Engineering, Sojo University, 4-22-1 Ikeda, Nishi-ku, Kumamoto 860-0082, Japan
| |
Collapse
|
25
|
Ferreira RCM, Costa SPG, Gonçalves H, Belsley M, Raposo MMM. Fluorescent phenanthroimidazoles functionalized with heterocyclic spacers: synthesis, optical chemosensory ability and two-photon absorption (TPA) properties. NEW J CHEM 2017. [DOI: 10.1039/c7nj02113e] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Fluorescent phenanthroimidazoles bearing heterocyclic spacers as novel optical chemosensors and two-photon absorption chromophores.
Collapse
Affiliation(s)
| | - Susana P. G. Costa
- Centre of Chemistry
- University of Minho
- Campus of Gualtar
- 4710-057 Braga
- Portugal
| | - Hugo Gonçalves
- Centre of Physics
- University of Minho
- Campus of Gualtar
- 4710-057 Braga
- Portugal
| | - Michael Belsley
- Centre of Physics
- University of Minho
- Campus of Gualtar
- 4710-057 Braga
- Portugal
| | | |
Collapse
|
26
|
Blasi D, Nikolaidou DM, Terenziani F, Ratera I, Veciana J. Excimers from stable and persistent supramolecular radical-pairs in red/NIR-emitting organic nanoparticles and polymeric films. Phys Chem Chem Phys 2017; 19:9313-9319. [DOI: 10.1039/c7cp00623c] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
For the first time, using a carbon free-radical, excimeric emission from stable and persistent supramolecular radical-pairs has been observed.
Collapse
Affiliation(s)
- Davide Blasi
- Institut de Ciència de Materials de Barcelona (CSIC)/CIBER-BBN
- E-08193 Bellaterra
- Spain
| | | | | | - Imma Ratera
- Institut de Ciència de Materials de Barcelona (CSIC)/CIBER-BBN
- E-08193 Bellaterra
- Spain
| | - Jaume Veciana
- Institut de Ciència de Materials de Barcelona (CSIC)/CIBER-BBN
- E-08193 Bellaterra
- Spain
| |
Collapse
|
27
|
Manuela M, Raposo M, Herbivo C, Hugues V, Clermont G, Castro MCR, Comel A, Blanchard-Desce M. Synthesis, Fluorescence, and Two-Photon Absorption Properties of Push-Pull 5-Arylthieno[3,2-b]thiophene Derivatives. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600806] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- M. Manuela
- Center of Chemistry; University of Minho, Campus of Gualtar; 4710-057 Braga Portugal
| | - M. Raposo
- Center of Chemistry; University of Minho, Campus of Gualtar; 4710-057 Braga Portugal
| | - Cyril Herbivo
- Center of Chemistry; University of Minho, Campus of Gualtar; 4710-057 Braga Portugal
| | - Vincent Hugues
- Univ. Bordeaux; Institut des Sciences Moléculaires (UMR 5255 CNRS); 33405 Talence France
| | - Guillaume Clermont
- Univ. Bordeaux; Institut des Sciences Moléculaires (UMR 5255 CNRS); 33405 Talence France
| | - M. Cidália R. Castro
- Center of Chemistry; University of Minho, Campus of Gualtar; 4710-057 Braga Portugal
| | - Alain Comel
- Université de Lorraine; Institut Jean Barriol; Laboratoire de Chimie et Physique - Analyse Multi-échelles des Milieux Complexes; 57048 Metz Cedex France
| | | |
Collapse
|
28
|
Molecular-Based Fluorescent Nanoparticles Built from Dedicated Dipolar Thienothiophene Dyes as Ultra-Bright Green to NIR Nanoemitters. Molecules 2016; 21:molecules21091227. [PMID: 27649124 PMCID: PMC6273080 DOI: 10.3390/molecules21091227] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 09/02/2016] [Accepted: 09/06/2016] [Indexed: 11/16/2022] Open
Abstract
Fluorescent Organic Nanoparticles (FONs), prepared by self-aggregation of dedicated dyes in water, represent a promising green alternative to the toxic quantum dots (QDs) for bioimaging purposes. In the present paper, we describe the synthesis and photophysical properties of new dipolar push-pull derivatives built from thieno[3,2-b]thiophene as a π-conjugated bridge that connects a triphenylamine moiety bearing various bulky substituents as electron-releasing moiety to acceptor end-groups of increasing strength (i.e., aldehyde, dicyanovinyl and diethylthiobarbiturate). All dyes display fluorescence properties in chloroform, which shifts from the green to the NIR range depending on the molecular polarization (i.e., strength of the end-groups) as well as a large two-photon absorption (TPA) band response in the biological spectral window (700-1000 nm). The TPA bands show a bathochromic shift and hyperchromic effect with increasing polarization of the dyes with maximum TPA cross-section reaching 2000 GM for small size chromophore. All dyes are found to form stable and deeply colored nanoparticles (20-45 nm in diameter) upon nanoprecipitation in water. Although their fluorescence is strongly reduced upon aggregation, all nanoparticles show large one-photon (up to 10⁸ M(-1)·cm(-1) in the visible region) and two-photon (up to 10⁶ GM in the NIR) brightness. Interestingly, both linear and non-linear optical properties are significantly affected by interchromophoric interactions, which are promoted by the molecular confinement and modulated by both the dipolar strength and the presence of the bulky groups. Finally, we exploited the photophysical properties of the FONs to design optimized core-shell nanoparticles built from a pair of complementary dipolar dyes that promotes an efficient core-to-shell FRET process. The resulting molecular-based core-shell nanoparticles combine large two-photon absorption and enhanced emission both located in the NIR spectral region, thanks to a major amplification (by a factor of 20) of the core fluorescence quantum yield. These novel nanoparticles, which combine huge one-and two-photon brightness, hold major promise for in vivo optical bioimaging.
Collapse
|
29
|
Xing P, Zhao Y. Multifunctional Nanoparticles Self-Assembled from Small Organic Building Blocks for Biomedicine. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:7304-7339. [PMID: 27273862 DOI: 10.1002/adma.201600906] [Citation(s) in RCA: 117] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 03/17/2016] [Indexed: 06/06/2023]
Abstract
Supramolecular self-assembly shows significant potential to construct responsive materials. By tailoring the structural parameters of organic building blocks, nanosystems can be fabricated, whose performance in catalysis, energy storage and conversion, and biomedicine has been explored. Since small organic building blocks are structurally simple, easily modified, and reproducible, they are frequently employed in supramolecular self-assembly and materials science. The dynamic and adaptive nature of self-assembled nanoarchitectures affords an enhanced sensitivity to the changes in environmental conditions, favoring their applications in controllable drug release and bioimaging. Here, recent significant research advancements of small-organic-molecule self-assembled nanoarchitectures toward biomedical applications are highlighted. Functionalized assemblies, mainly including vesicles, nanoparticles, and micelles are categorized according to their topological morphologies and functions. These nanoarchitectures with different topologies possess distinguishing advantages in biological applications, well incarnating the structure-property relationship. By presenting some important discoveries, three domains of these nanoarchitectures in biomedical research are covered, including biosensors, bioimaging, and controlled release/therapy. The strategies regarding how to design and characterize organic assemblies to exhibit biomedical applications are also discussed. Up-to-date research developments in the field are provided and research challenges to be overcome in future studies are revealed.
Collapse
Affiliation(s)
- Pengyao Xing
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
- School of Chemistry and Chemical Engineering and Key Laboratory of Colloid and Interface Chemistry of Ministry of Education, Shandong University, Jinan, 250100, P. R. China
| | - Yanli Zhao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore.
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
| |
Collapse
|
30
|
Mettra B, Appaix F, Olesiak-Banska J, Le Bahers T, Leung A, Matczyszyn K, Samoc M, van der Sanden B, Monnereau C, Andraud C. A Fluorescent Polymer Probe with High Selectivity toward Vascular Endothelial Cells for and beyond Noninvasive Two-Photon Intravital Imaging of Brain Vasculature. ACS APPLIED MATERIALS & INTERFACES 2016; 8:17047-59. [PMID: 27267494 DOI: 10.1021/acsami.6b02936] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
A chromophore-engineering strategy that relies on the introduction of a ground-state distortion in a quadrupolar chromophore was used to obtain a quasi-quadrupolar chromophore with red emission and large two-photon absorption (2PA) cross-section in polar solvents. This molecule was functionalized with water-solubilizing polymer chains. It constitutes not only a remarkable contrast agent for intravital two-photon microscopy of the functional cerebral vasculature in a minimally invasive configuration but presents intriguing endothelial staining ability that makes it a valuable probe for premortem histological staining.
Collapse
Affiliation(s)
- B Mettra
- Laboratoire de Chimie, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard, Université de Lyon , F69342, Lyon, France
| | - F Appaix
- Grenoble Institut des Neurosciences, GIN, Inserm, U1216, Univ Grenoble Alpes , F-38000 Grenoble, France
| | - J Olesiak-Banska
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Technology , Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - T Le Bahers
- Laboratoire de Chimie, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard, Université de Lyon , F69342, Lyon, France
| | - A Leung
- Laboratoire de Chimie, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard, Université de Lyon , F69342, Lyon, France
| | - K Matczyszyn
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Technology , Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - M Samoc
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Technology , Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - B van der Sanden
- CLINATEC, INSERM UA 01, Rue des Martyrs 17, 38054, Grenoble, France
| | - C Monnereau
- Laboratoire de Chimie, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard, Université de Lyon , F69342, Lyon, France
| | - C Andraud
- Laboratoire de Chimie, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard, Université de Lyon , F69342, Lyon, France
| |
Collapse
|
31
|
Malakar A, Kumar M, Reddy A, Biswal HT, Mandal BB, Krishnamoorthy G. Aggregation induced enhanced emission of 2-(2'-hydroxyphenyl)benzimidazole. Photochem Photobiol Sci 2016; 15:937-48. [PMID: 27334264 DOI: 10.1039/c6pp00122j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
In this study, the aggregation induced emission enhancement (AIEE) of 2-(2'-hydroxyphenyl)benzimidazole (HPBI) is reported. To investigate the AIEE process of HPBI, absorption/fluorescence spectroscopy, fluorescence imaging and field emission scanning electron microscopy were employed. A comparative study with 2-phenylbenzimidazole (PBI) divulges the significance of the hydroxyl group in the AIEE process. Further, molecular dynamics simulations have been carried out with explicit solvent molecules to follow the aggregation process of HPBI with time. The obtained molecular dynamics simulation results not only predicted the formation of aggregates but also provided detailed insight and information on the molecular interactions. The cellular studies showed aggregates yield higher fluorescence in the visible region inside HeLa cells in comparison to monomeric compounds which failed to exhibit any visible fluorescence inside the cell. The obtained aggregates were further found to be biocompatible and therefore can be used for bio-imaging applications.
Collapse
Affiliation(s)
- Ashim Malakar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| | - Manishekhar Kumar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Anki Reddy
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Himadree T Biswal
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| | - Biman B Mandal
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - G Krishnamoorthy
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| |
Collapse
|
32
|
Chowdhury A, Howlader P, Mukherjee PS. Aggregation‐Induced Emission of Platinum(II) Metallacycles and Their Ability to Detect Nitroaromatics. Chemistry 2016; 22:7468-78. [DOI: 10.1002/chem.201600698] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Indexed: 12/19/2022]
Affiliation(s)
- Aniket Chowdhury
- Inorganic and Physical Chemistry Indian Institute of Science Bangalore 560012 India
| | - Prodip Howlader
- Inorganic and Physical Chemistry Indian Institute of Science Bangalore 560012 India
| | | |
Collapse
|
33
|
Enhanced two-photon brightness in molecular-based organic nanoparticles built from articulated-dipoles. CR CHIM 2016. [DOI: 10.1016/j.crci.2015.07.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
34
|
Cvejn D, Michail E, Seintis K, Klikar M, Pytela O, Mikysek T, Almonasy N, Ludwig M, Giannetas V, Fakis M, Bureš F. Solvent and branching effect on the two-photon absorption properties of push–pull triphenylamine derivatives. RSC Adv 2016. [DOI: 10.1039/c5ra25170b] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The photophysical and two-photon absorption (2PA) properties of two tri-podal molecules and of their quadrupolar and dipolar counterparts are reported for a series of solvents with varying polarity.
Collapse
|
35
|
Faucon A, Benhelli-Mokrani H, Córdova LA, Brulin B, Heymann D, Hulin P, Nedellec S, Ishow E. Are Fluorescent Organic Nanoparticles Relevant Tools for Tracking Cancer Cells or Macrophages? Adv Healthc Mater 2015; 4:2727-34. [PMID: 26548458 DOI: 10.1002/adhm.201500562] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 08/20/2015] [Indexed: 01/20/2023]
Abstract
Strongly solvatochromic fluorophores are devised, containing alkyl chains and enable to self-assemble as very bright fluorescent organic nanoparticles (FONs) in water (Φf = 0.28). The alkyl chains impart each fluorophore with strongly hydrophobic surroundings, causing distinct emission colors between FONs where the fluorophores are associated, and their disassembled state. Such color change is harnessed to assess the long-term fate of FONs in both cancer cells and monocytes/macrophages. Disintegration of the orange-emitting FONs by monocytes/macrophages is evidenced through the formation of micrometer green-yellowish emitting vesicles. By contrast, cancer cells retain longer the integrity of organic nanoparticles. In both cases, no significant toxicity is detected, making FONs as valuable bioimaging agents for cell tracking with weak risks of deleterious accumulation and low degradation rate.
Collapse
Affiliation(s)
- Adrien Faucon
- CEISAM-UMR CNRS 6230; Université de Nantes; 2 rue de la Houssinière 44322 Nantes France
| | | | - Luis A. Córdova
- Department of Oral and Maxillofacial Surgery; San Borja Arriaran University Hospital-Faculty of Dentistry; University of Chile-CONICYT; Sergio Livingstone Polhammer 943 8380000 Santiago Chile
- INSERM, UMR957, Equipe Ligue 2012, Université de Nantes; Faculté de Médecine; 1 rue Gaston Veil 44035 Nantes France
| | - Bénédicte Brulin
- INSERM, UMR957, Equipe Ligue 2012, Université de Nantes; Faculté de Médecine; 1 rue Gaston Veil 44035 Nantes France
| | - Dominique Heymann
- INSERM, UMR957, Equipe Ligue 2012, Université de Nantes; Faculté de Médecine; 1 rue Gaston Veil 44035 Nantes France
| | - Philippe Hulin
- INSERM UMS 016-UMS CNRS 3556; 8 quai Moncousu 44007 Nantes France
| | - Steven Nedellec
- INSERM UMS 016-UMS CNRS 3556; 8 quai Moncousu 44007 Nantes France
| | - Eléna Ishow
- CEISAM-UMR CNRS 6230; Université de Nantes; 2 rue de la Houssinière 44322 Nantes France
| |
Collapse
|
36
|
Dumat B, Faurel-Paul E, Fornarelli P, Saettel N, Metgé G, Fiorini-Debuisschert C, Charra F, Mahuteau-Betzer F, Teulade-Fichou MP. Influence of the oxazole ring connection on the fluorescence of oxazoyl-triphenylamine biphotonic DNA probes. Org Biomol Chem 2015; 14:358-70. [PMID: 26599863 DOI: 10.1039/c5ob02225h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
On the basis of our previous work on DNA fluorophores derived from vinylpyridinium-triphenylamine, we explored the structure space around the electron-rich triphenylamine (TP) core by changing the vinyl bond to an oxazole ring. As 2,5-diaryloxazoles are known to be highly fluorescent and efficient two photon absorbers, we synthesized analogues with two different connections of the oxazole to the triphenylamine core: TP-Ox2Py and TP-Ox5Py sets. Since the benzimidazolium group was proven to be more effective in the TP series than the pyridinium, we also synthesized a TP-Ox5Bzim set. The TP-Ox5Py series retains the TP-Py properties: on/off behavior on DNA, good two-photon cross-section and bright staining of nuclear DNA by microscopy under both one or two-photon excitation. On the other hand, the TP-Ox2Py series does not display fluorescence upon binding to DNA. The TP-Ox5Bzim set is fluorescent even in the absence of DNA and displays lower affinity than the corresponding TP-Ox5Py. CD experiments and docking were performed to understand these different behaviors.
Collapse
Affiliation(s)
- Blaise Dumat
- Institut Curie, PSL Research University, CNRS, INSERM, UMR9187/U1196, F-91405, Orsay, France.
| | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Mandal AK, Sreejith S, He T, Maji SK, Wang XJ, Ong SL, Joseph J, Sun H, Zhao Y. Three-photon-excited luminescence from unsymmetrical cyanostilbene aggregates: morphology tuning and targeted bioimaging. ACS NANO 2015; 9:4796-4805. [PMID: 25951348 DOI: 10.1021/nn507072r] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report an experimental observation of aggregation-induced enhanced luminescence upon three-photon excitation in aggregates formed from a class of unsymmetrical cyanostilbene derivatives. Changing side chains (-CH3, -C6H13, -C7H15O3, and folic acid) attached to the cyanostilbene core leads to instantaneous formation of aggregates with sizes ranging from micrometer to nanometer scale in aqueous conditions. The crystal structure of a derivative with a methyl side chain reveals the planarization in the unsymmetrical cyanostilbene core, causing luminescence from corresponding aggregates upon three-photon excitation. Furthermore, folic acid attached cyanostilbene forms well-dispersed spherical nanoaggregates that show a high three-photon cross-section of 6.0 × 10(-80) cm(6) s(2) photon(-2) and high luminescence quantum yield in water. In order to demonstrate the targeted bioimaging capability of the nanoaggregates, three cell lines (HEK293 healthy cell line, MCF7 cancerous cell line, and HeLa cancerous cell line) were employed for the investigations on the basis of their different folate receptor expression level. Two kinds of nanoaggregates with and without the folic acid targeting ligand were chosen for three-photon bioimaging studies. The cell viability of three types of cells incubated with high concentration of nanoaggregates still remained above 70% after 24 h. It was observed that the nanoaggregates without the folic acid unit could not undergo the endocytosis by both healthy and cancerous cell lines. No obvious endocytosis of folic acid attached nanoaggregates was observed from the HEK293 and MCF7 cell lines having a low expression of the folate receptor. Interestingly, a significant amount of endocytosis and internalization of folic acid attached nanoaggregates was observed from HeLa cells with a high expression of the folate receptor under three-photon excitation, indicating targeted bioimaging of folic acid attached nanoaggregates to the cancer cell line. This study presents a paradigm of using organic nanoaggregates for targeted three-photon bioimaging.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | - Yanli Zhao
- ¶School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore
| |
Collapse
|
38
|
Castet F, Blanchard-Desce M, Adamietz F, Poronik YM, Gryko DT, Rodriguez V. Experimental and Theoretical Investigation of the First-Order Hyperpolarizability of Octupolar Merocyanine Dyes. Chemphyschem 2014; 15:2575-81. [DOI: 10.1002/cphc.201402083] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Indexed: 01/05/2023]
|
39
|
Genin E, Gao Z, Varela JA, Daniel J, Bsaibess T, Gosse I, Groc L, Cognet L, Blanchard-Desce M. "Hyper-bright" near-infrared emitting fluorescent organic nanoparticles for single particle tracking. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:2258-2257. [PMID: 24497445 DOI: 10.1002/adma.201304602] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Revised: 10/17/2013] [Indexed: 06/03/2023]
Affiliation(s)
- Emilie Genin
- Univ. Bordeaux, Institut des Sciences Moléculaires (UMR 5255), 351 Cours de la Libération, 33405, Talence, France
| | | | | | | | | | | | | | | | | |
Collapse
|
40
|
A new route towards fluorescent organic nanoparticles with red-shifted emission and increased colloidal stability. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.01.032] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
41
|
Yu J, Zhang X, Hao X, Zhang X, Zhou M, Lee CS, Chen X. Near-infrared fluorescence imaging using organic dye nanoparticles. Biomaterials 2014; 35:3356-64. [PMID: 24461324 DOI: 10.1016/j.biomaterials.2014.01.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Accepted: 01/01/2014] [Indexed: 12/31/2022]
Abstract
Near-infrared (NIR) fluorescence imaging in the 700-1000 nm wavelength range has been very attractive for early detection of cancers. Conventional NIR dyes often suffer from limitation of low brightness due to self-quenching, insufficient photo- and bioenvironmental stability, and small Stokes shift. Herein, we present a strategy of using small-molecule organic dye nanoparticles (ONPs) to encapsulate NIR dyes to enable efficient fluorescence resonance energy transfer to obtain NIR probes with remarkably enhanced performance for in vitro and in vivo imaging. In our design, host ONPs are used as not only carriers to trap and stabilize NIR dyes, but also light-harvesting agent to transfer energy to NIR dyes to enhance their brightness. In comparison with pure NIR dyes, our organic dye nanoparticles possess almost 50-fold increased brightness, large Stokes shifts (∼250 nm) and dramatically enhanced photostability. With surface modification, these NIR-emissive organic nanoparticles have water-dispersity and size- and fluorescence- stability over pH values from 2 to 10 for almost 60 days. With these superior advantages, these NIR-emissive organic nanoparticles can be used for highly efficient folic-acid aided specific targeting in vivo and ex vivo cellular imaging. Finally, during in vivo imaging, the nanoparticles show negligible toxicity. Overall, the results clearly display a potential application of using the NIR-emissive organic nanoparticles for in vitro and in vivo imaging.
Collapse
Affiliation(s)
- Jia Yu
- Institute of Functional Nano & Soft Materials Laboratory (FUNSOM) & Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, PR China
| | - Xiujuan Zhang
- Institute of Functional Nano & Soft Materials Laboratory (FUNSOM) & Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, PR China.
| | - Xiaojun Hao
- Institute of Functional Nano & Soft Materials Laboratory (FUNSOM) & Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, PR China
| | - Xiaohong Zhang
- Nano-organic Photoelectronic Laboratory and Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Mengjiao Zhou
- Institute of Functional Nano & Soft Materials Laboratory (FUNSOM) & Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, PR China
| | - Chun-Sing Lee
- Center of Super-Diamond and Advanced Films (COSDAF) & Department of Physics and Materials Science, City University of Hong Kong, Hong Kong, China.
| | - Xianfeng Chen
- Center of Super-Diamond and Advanced Films (COSDAF) & Department of Physics and Materials Science, City University of Hong Kong, Hong Kong, China.
| |
Collapse
|
42
|
Faucon A, Maldiney T, Clément O, Hulin P, Nedellec S, Robard M, Gautier N, De Meulenaere E, Clays K, Orlando T, Lascialfari A, Fiorini-Debuisschert C, Fresnais J, Ishow E. Highly cohesive dual nanoassemblies for complementary multiscale bioimaging. J Mater Chem B 2014; 2:7747-7755. [DOI: 10.1039/c4tb01199f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Core–shell nanoarchitectures made of non-doped fluorescent organic platforms capped with magnetic nanoparticles display high bioimaging performances.
Collapse
Affiliation(s)
- Adrien Faucon
- CEISAM – UMR CNRS 6230
- Université de Nantes
- 44322 Nantes, France
| | - Thomas Maldiney
- Paris Cardiovascular Research Center – PARCC
- Université Paris Descartes
- INSERM U970
- 75015 Paris, France
| | - Olivier Clément
- Paris Cardiovascular Research Center – PARCC
- Université Paris Descartes
- INSERM U970
- 75015 Paris, France
| | | | | | | | | | - Evelien De Meulenaere
- Department of Chemistry
- KULeuven
- 3001 Heverlee, Belgium
- Department of Bioscience Engineering
- KULeuven
| | - Koen Clays
- Department of Chemistry
- KULeuven
- 3001 Heverlee, Belgium
| | - Tomas Orlando
- Department of Physics and INSTM
- Università di Pavia
- 27100 Pavia, Italy
| | | | | | - Jérôme Fresnais
- PECSA – UMR CNRS 7195
- Université Pierre et Marie Curie
- 75005 Paris, France
| | - Eléna Ishow
- CEISAM – UMR CNRS 6230
- Université de Nantes
- 44322 Nantes, France
| |
Collapse
|
43
|
Fery-Forgues S, Veesler S, Fellows WB, Tolbert LM, Solntsev KM. Microcrystals with enhanced emission prepared from hydrophobic analogues of the green fluorescent protein chromophore via reprecipitation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:14718-14727. [PMID: 24245782 DOI: 10.1021/la403909k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Certain synthetic analogues of the green fluorescent protein (GFP) chromophore are almost nonfluorescent in dilute solutions but are strongly light-emissive in the solid state, thus exhibiting aggregation-induced emission (AIE) behavior. In the present work, two such hydrophobic derivatives of the GFP chromophore known to be fluorescent in the crystalline state (p-hexyloxy- and p-dodecyloxybenzylideneimidazolinone) were used to prepare aqueous suspensions of particles via a mild solvent-exchange reprecipitation (RP) method. This evolution was monitored at various experimental conditions by UV-vis absorption and fluorescence spectroscopy, fluorescence microscopy, as well as electron transmission and scanning microscopy. Both compounds spontaneously produced platelet-like microcrystals, the size and shape of which were influenced by the experimental conditions. The dodecyl derivative also led to the concomitant formation of nanofibers, a tendency reinforced by addition of poly(acrylic acid) to the RP medium. The photoluminescence properties of the solids produced by RP were compared to pristine microcrystalline powders obtained by crystallization in an organic solvent. Significant differences in the emission properties were found and are discussed. This study illustrates the fact that AIE fluorescence is strongly dependent on the nature of the particles and hence on the preparation methods. Being aware of these variations is important for the preparation and subsequent use of AIE-active compounds as fluorescent materials.
Collapse
|
44
|
Ding D, Goh CC, Feng G, Zhao Z, Liu J, Liu R, Tomczak N, Geng J, Tang BZ, Ng LG, Liu B. Ultrabright organic dots with aggregation-induced emission characteristics for real-time two-photon intravital vasculature imaging. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:6083-8. [PMID: 24038281 DOI: 10.1002/adma.201301938] [Citation(s) in RCA: 147] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 06/27/2013] [Indexed: 05/24/2023]
Abstract
Ultrabright organic dots with aggregation-induced emission characteristics (AIE dots) are prepared and shown to exhibit a high quantum yield, a, large two-photon absorption cross-section, and low in vivo toxicity. Real-time two-photon intravital blood vascular imaging in various tissues substantiates that the AIE dots are effective probes for in vivo vasculature imaging in a deep and high-contrast manner.
Collapse
Affiliation(s)
- Dan Ding
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 117576, Singapore
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Fery-Forgues S. Fluorescent organic nanocrystals and non-doped nanoparticles for biological applications. NANOSCALE 2013; 5:8428-8442. [PMID: 23900346 DOI: 10.1039/c3nr02657d] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The recently developed fluorescent organic nanocrystals and non-doped nanoparticles (FONs) occupy a special position among other nanoparticle systems that are used for studying a variety of fundamental processes in the life sciences. Understanding their particular photophysical behavior allows proper design of FONs. The usual preparation methods are described. It is shown that FONs lead to original applications as biochemical sensors and biolabels for immunoassays. They also show high potentialities for bio-imaging of cell cultures, drug-delivery control, angiography and in vivo bio-imaging of solid tumors.
Collapse
Affiliation(s)
- Suzanne Fery-Forgues
- CNRS, ITAV-USR 3505, Advanced Technology Institute in Life Sciences, 1 place Pierre Potier, Oncopole-BP 50624, 31106 Toulouse, France.
| |
Collapse
|
46
|
Campioli E, Rouxel C, Campanini M, Nasi L, Blanchard-Desce M, Terenziani F. Enforcing luminescence at organic nanointerfaces: luminescence spatial confinement and amplification in molecular-based core-shell nanoparticles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2013; 9:1982-1988. [PMID: 23292762 DOI: 10.1002/smll.201202504] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Indexed: 06/01/2023]
Abstract
Fully organic core-shell nanoparticles that promote luminescence spatial confinement and enhancement at the core-shell nanointerface are designed and prepared. These molecular-based bicomponent nanostructures give rise to very efficient directional excitation energy transfer from the shell to acceptor molecules in the core located at the core-shell nanointerface. A striking luminescence enhancement is observed with respect to the corresponding single-component nanoparticles, which is ascribed to large local electric fields generated at the nanointerface between the polarizable molecular core and shell.
Collapse
Affiliation(s)
- Elisa Campioli
- Dipartimento di Chimica and INSTM-UdR Parma, Università di Parma, Parco Area delle Scienze 17/a, 43124 Parma, Italy
| | | | | | | | | | | |
Collapse
|
47
|
Li K, Qin W, Ding D, Tomczak N, Geng J, Liu R, Liu J, Zhang X, Liu H, Liu B, Tang BZ. Photostable fluorescent organic dots with aggregation-induced emission (AIE dots) for noninvasive long-term cell tracing. Sci Rep 2013; 3:1150. [PMID: 23359649 PMCID: PMC3556677 DOI: 10.1038/srep01150] [Citation(s) in RCA: 236] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2012] [Accepted: 12/11/2012] [Indexed: 12/24/2022] Open
Abstract
Long-term noninvasive cell tracing by fluorescent probes is of great importance to life science and biomedical engineering. For example, understanding genesis, development, invasion and metastasis of cancerous cells and monitoring tissue regeneration after stem cell transplantation require continual tracing of the biological processes by cytocompatible fluorescent probes over a long period of time. In this work, we successfully developed organic far-red/near-infrared dots with aggregation-induced emission (AIE dots) and demonstrated their utilities as long-term cell trackers. The high emission efficiency, large absorptivity, excellent biocompatibility, and strong photobleaching resistance of the AIE dots functionalized by cell penetrating peptides derived from transactivator of transcription proteins ensured outstanding long-term noninvasive in vitro and in vivo cell tracing. The organic AIE dots outperform their counterparts of inorganic quantum dots, opening a new avenue in the development of fluorescent probes for following biological processes such as carcinogenesis.
Collapse
Affiliation(s)
- Kai Li
- Institute of Materials Research and Engineering, 3, Research Link, Singapore 117602
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576
- These authors contributed equally to this work
| | - Wei Qin
- Department of Chemistry, Division of Biomedical Engineering, Institute for Advanced Study, State Key Laboratory of Molecular Neuroscience, and Institute of Molecular Functional Materials, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
- These authors contributed equally to this work
| | - Dan Ding
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576
| | - Nikodem Tomczak
- Institute of Materials Research and Engineering, 3, Research Link, Singapore 117602
| | - Junlong Geng
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576
| | - Rongrong Liu
- Institute of Materials Research and Engineering, 3, Research Link, Singapore 117602
| | - Jianzhao Liu
- Department of Chemistry, Division of Biomedical Engineering, Institute for Advanced Study, State Key Laboratory of Molecular Neuroscience, and Institute of Molecular Functional Materials, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Xinhai Zhang
- Institute of Materials Research and Engineering, 3, Research Link, Singapore 117602
| | - Hongwei Liu
- Institute of Materials Research and Engineering, 3, Research Link, Singapore 117602
| | - Bin Liu
- Institute of Materials Research and Engineering, 3, Research Link, Singapore 117602
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576
| | - Ben Zhong Tang
- Institute of Materials Research and Engineering, 3, Research Link, Singapore 117602
- Department of Chemistry, Division of Biomedical Engineering, Institute for Advanced Study, State Key Laboratory of Molecular Neuroscience, and Institute of Molecular Functional Materials, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
- SCUT-HKUST Joint Research Laboratory, Guangdong Innovative Research Team, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, China, 510640
| |
Collapse
|
48
|
Ishow E, Clavier G, Miomandre F, Rebarz M, Buntinx G, Poizat O. Comprehensive investigation of the excited-state dynamics of push–pull triphenylamine dyes as models for photonic applications. Phys Chem Chem Phys 2013; 15:13922-39. [DOI: 10.1039/c3cp51480c] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
49
|
|
50
|
Faucon A, Lenk R, Hémez J, Gautron E, Jacquemin D, Le Questel JY, Graton J, Brosseau A, Ishow E. Fluorescent carboxylic and phosphonic acids: comparative photophysics from solution to organic nanoparticles. Phys Chem Chem Phys 2013; 15:12748-56. [DOI: 10.1039/c3cp51369f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|