Littérature scientifique sur le sujet « Circularly Polarized Luminescence (CPL) »
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Articles de revues sur le sujet "Circularly Polarized Luminescence (CPL)"
Imai, Yoshitane. « Generation of Circularly Polarized Luminescence by Symmetry Breaking ». Symmetry 12, no 11 (28 octobre 2020) : 1786. http://dx.doi.org/10.3390/sym12111786.
Texte intégralSong, Fengyan, Zheng Zhao, Zhiyang Liu, Jacky W. Y. Lam et Ben Zhong Tang. « Circularly polarized luminescence from AIEgens ». Journal of Materials Chemistry C 8, no 10 (2020) : 3284–301. http://dx.doi.org/10.1039/c9tc07022b.
Texte intégralKumar, Jatish, Tsuyoshi Kawai et Takuya Nakashima. « Circularly polarized luminescence in chiral silver nanoclusters ». Chemical Communications 53, no 7 (2017) : 1269–72. http://dx.doi.org/10.1039/c6cc09476g.
Texte intégralImagawa, Takuro, Shuzo Hirata, Kenro Totani, Toshiyuki Watanabe et Martin Vacha. « Thermally activated delayed fluorescence with circularly polarized luminescence characteristics ». Chemical Communications 51, no 68 (2015) : 13268–71. http://dx.doi.org/10.1039/c5cc04105h.
Texte intégralZou, Chen, Dan Qu, Haijing Jiang, Di Lu, Xiaoting Ma, Ziyi Zhao et Yan Xu. « Bacterial Cellulose : A Versatile Chiral Host for Circularly Polarized Luminescence ». Molecules 24, no 6 (13 mars 2019) : 1008. http://dx.doi.org/10.3390/molecules24061008.
Texte intégralChen, Jingqi, Yingying Chen, Lijuan Zhao, Lingyan Feng, Feifei Xing, Chuanqi Zhao, Lianzhe Hu, Jinsong Ren et Xiaogang Qu. « G-quadruplex DNA regulates invertible circularly polarized luminescence ». Journal of Materials Chemistry C 7, no 44 (2019) : 13947–52. http://dx.doi.org/10.1039/c9tc04508b.
Texte intégralZheng, Anyi, Tonghan Zhao, Xue Jin, Wangen Miao et Pengfei Duan. « Circularly polarized luminescent porous crystalline nanomaterials ». Nanoscale 14, no 4 (2022) : 1123–35. http://dx.doi.org/10.1039/d1nr07069j.
Texte intégralWang, Chen, Luyao Feng, Junxiao Liu, Jing Fu, Jinglin Shen et Wei Qi. « Manipulating the Assembly of Au Nanoclusters for Luminescence Enhancement and Circularly Polarized Luminescence ». Nanomaterials 12, no 9 (25 avril 2022) : 1453. http://dx.doi.org/10.3390/nano12091453.
Texte intégralWang, Chen, Luyao Feng, Junxiao Liu, Jing Fu, Jinglin Shen et Wei Qi. « Manipulating the Assembly of Au Nanoclusters for Luminescence Enhancement and Circularly Polarized Luminescence ». Nanomaterials 12, no 9 (25 avril 2022) : 1453. http://dx.doi.org/10.3390/nano12091453.
Texte intégralHe, Dong-Qiang, Hai-Yan Lu, Meng Li et Chuan-Feng Chen. « Intense blue circularly polarized luminescence from helical aromatic esters ». Chemical Communications 53, no 45 (2017) : 6093–96. http://dx.doi.org/10.1039/c7cc01882g.
Texte intégralThèses sur le sujet "Circularly Polarized Luminescence (CPL)"
Li, Tian-Yi, You-Xuan Zheng et Yong-Hui Zhou. « Iridium(III) phosphorescent complexes with dual stereogenic centers : single crystal, electronic circular dichroism evidence and circularly polarized luminescence properties ». Royal Society of Chemistry, 2016. https://tud.qucosa.de/id/qucosa%3A36123.
Texte intégralMattei, Carlo Andrea. « Élaboration de complexes de coordination d’ions lanthanides combinant les propriétés de molécule aimante et de luminescence circulairement polarisée ». Electronic Thesis or Diss., Rennes 1, 2021. https://ged.univ-rennes1.fr/nuxeo/site/esupversions/f7b00a90-2ab1-411e-b9f9-2e2f43b32f59.
Texte intégralBinaphthyl-derived ligands containing P"=" O donor groups were employed for the rational synthesis of multi-properties coordination compounds with M〖(hfac)〗_3 units. The chiral bisphosphine oxide L acted as a chelate ligand giving monomeric racemic species of formula [〖{Ln(hfac)_3 L}〗_3] (Ln= Eu,Dy and Yb). These complexes were structurally characterized and their physical properties were studied in solid state. The compound [〖{Eu(hfac)_3 L}〗_3] exhibited metal-centred luminescence. Conversely, the ligand L was not able to sensitise luminescence emission for [〖{Dy(hfac)_3 L}〗_3]. However, the latter displayed field-induced SMM behaviour. The complex [〖{Yb(hfac)_3 L}〗_3] was an example of a chiral luminescent field-induced SMM. For both Dy(III)- and Yb(III)-based species, the magnetization relaxed via a similar Raman process under the effect of an external magnetic field. All these compounds sublimated when heated at reduced pressure. Subsequently, the coordination chemistry of the enantiopure binaphthyl-derived bisphosphate ligands (S)/(R)-L^n (n=1,3) and (S,S,S)/(R,R,R)-L^n (n=2,4) was studied. Reaction of these ligands with equimolar quantities of the metal precursors [M(hfac)_3 (H_2 O)_2] (M=Y,Eu,Dy and Yb) yielded enantiopure 1D-coordiantion polymers. With ligands (S)/(R)-L^n (n=1,3), two different polymorphic species could be crystallised by changing reaction conditions and nature of the metal ion. The Dy(III)-based compounds manifested field-induced SMM behaviour and luminescence emission. Magneto-optical correlation and results from ab initio calculations are presented. The complex 〖[Dy(hfac)_3 {(S)-L^1}]〗_n showed multiple contributions of the magnetization relaxation despite the presence of a single crystallographic Dy(III) centre. Solubilization of the coordination polymers 〖[M(hfac)_3 {(S)/(R)-L^1}]〗_n caused a structural reorganization to monomeric species of formula [M(hfac)_3 {(S)/(R)-L^1}]. This was demonstrated by NMR spectroscopy and DFT calculations. Similarly to the solid state, complex [Dy(hfac)_3 {(S)-L^1}] exhibited a multi-contribution field-induced SMM behaviour. The processes governing the magnetization relaxation of 〖[Dy(hfac)_3 {(S,S,S)-L^2}]〗_n and 〖[Dy〖(hfac)〗_3 {(S)-L^3 }]〗_n were further investigated by applying a strategy of magnetic dilution and isotopic enrichment with (_ ^163)Dy(III) (I=1⁄2) and (_ ^164)Dy(III) (I=0). Despite the minimisation of the dipolar interactions and the absence of nuclear spin, a strong field dependence of the magnetization was still observed. The ligands (S)/(R)-L^n (n=1,3) and (S,S,S)/(R,R,R)-L^n (n=2,4) efficiently sensitised the luminescence of the Eu(III)-based species. Their enantiopure nature promoted CPL emission in both solution and solid state. Finally, field-induced SMM behaviour and CPL emission were observed in the same compound by employing Yb(III) centres. The use of the functionalized TTF-based ligand L^5 and chiral Yb〖{(R)/(S)"-" facam}〗_3 units gave the enantiopure pair of dimers 〖[Yb〖{(R)/(S)"-" facam}〗_3 (L^5)]〗_2. The TTF fragment conferred redox activity. The application of a moderate static field revealed slow relaxation of the magnetization. Direct excitation of the ILCT states of L^5 sensitised the metal-centred luminescence. Moreover, both solution and solid state NIR-CPL emission were detected. The complex 〖[Yb〖{(R)/(S)"-" facam}〗_3 (L^5)]〗_2 was a redox chiral filed-induced SMM displaying CPL emission. Together with the Yb(III)-based complexes coordinated by the ligands (S)/(R)-L^n (n=1,3) and (S,S,S)/(R,R,R)-L^n (n=2,4), these are the first documented solid state NIR-CPL emissive examples for molecular complexes
Pathan, Shaheen. « Développement de matériaux flexibles optiquement actifs basés sur des nanostructures hybrides chirales de modèle d’assemblage moléculaire ». Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0126.
Texte intégralIn this work, we focused on the creation of optically active chiral nanostructures by fabricating fluorescent silica nanohelices in order to obtain optically active nanoscale soft materials for applications as nanophotonics materials. For this purpose, silica chiral nanohelices were used for grafting and organizing achiral fluorescent inorganic nanocrystals, dyes, molecules, and fluorescent polymers through different approaches. These inorganic helices were formed via sol-gel method using organic helical self–assemblies of surfactant molecules (achiral and cationic gemini surfactant, with chiral counterion, tartrate) as templates. First, the surface of helical silica was functionalized by APTES in order to graft inorganic quantum dots ZnS-AgInS2 with different capping ligands. In the second part, fluorescent anthracene derivative polymer was organized via deposition and absorption on the surface of helical silica. To investigate the chiroptical properties, circular dichroism and circularly polarised luminescence characterization were performed.In the first chapter, the bibliographic study on different chiral organic self-assembling systems and their chiroptical properties are shown. The studies on the formation of chiral self-assembled systems in different conditions, structural morphology, fabrication techniques and their applications are discussed followed by the use of fluorescent nanocrystals, i.e., quantum dots (QDs) and achiral fluorescent polymers on which chiroptical properties can be obtained and their applications in optical nanodevices, sensors, and nano-photonics.In the first part of the second chapter, different characterisation techniques such as transmission electron microscope (TEM) , high resolution transmission electron microscope (HRTEM), and confocal microscopy, UV-Vis spectroscopy and fluorescence spectroscopies, as well as circular dichroism (CD) and circularly polarised luminescence (CPL) spectroscopies are described. In the second part, the synthesis of Gemini 16-2-16 as well as their self-assemblies mechanism, and their transformation to silica replica via sol-gel chemistry are described. These silica nanohelices are functionalized by 3-aminopropyltriethoxysilane (APTES). Their analysis is performed by Thermogravimetric analysis (TGA) and elementary analysis (EA).In the third Chapter, we focused on the synthesis of inorganic ((ZnS)x-1(AgInS2)x) QDs with different compositions molar ratio and its characterizations by TEM, TGA, EA, Fourier-transform infrared spectroscopy (FTIR), zeta potential measurements, absorption, and emission spectroscopy. Four types of ligands were used to cap the QDs via phase ligand exchange as follows: ammonium sulphide (AS), 3-mercaptopropionic acid (MPA), l-cysteine (L-Cys) and the fourth one is oleylamine (OLA). These QDs are grafted on the surface of amine-modified silica helices through ionic interaction. Various techniques were used to show the grafting of QDs on the surface of silica helix, and their optical properties were studied using absorption and emission spectroscopy. After grafting, in each case of ligands, different results were observed as follows: The TEM characterization shows that QDs are grafted on the surface of silica helices. In the case of AS-capped QDs, the helical morphology of silica helices after grafting is destroyed; therefore the further ananlysis was not possible. While, in the cases of QDs with three other ligands MPA, OLA and L-cys, dense and homogeneous grafting of the QDs were observed by TEM and the helical morphology was preserved after their grafting. The HRTEM images were taken on the MPA-QDs@silica helices and energy-dispersive x-ray (EDX) analysis was performed in STEM mode, confirming the QDs elements present on the silica surfaces. [...]
Carr, Rachel. « Lanthanide complexes as chiral probes exploiting circularly polarized luminescence ». Thesis, Durham University, 2014. http://etheses.dur.ac.uk/10543/.
Texte intégralSan, Jose Benedict Arcena. « Polarized Luminescence and Chiroptical Switching Functionalities of Liquid Crystalline and Chiral Conjugated Polymers ». Master's thesis, 京都大学 (Kyoto University), 2014. http://hdl.handle.net/2433/188612.
Texte intégralKubo, Hiromu. « Design and Synthesis of Helicene Derivatives with Excellent Chiroptical Properties ». Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263690.
Texte intégralScalabre, Antoine. « induction de chiralité supramoléculaire : vers de nouveaux nano-objets chiro-optiques hybrides ». Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0157/document.
Texte intégralThe polarization of light, despite being known since long time, is recently at the center of renewed interest. More and more high technology companies in the fields of safety and information transmission are starting to exploit this property. One bottleneck for their use comes from the limitation in the light transmission of current methods of polarization (typically up to 45%). In order to overpass this physical limitation, one possible approach would be to use fluorescent materials emitting polarized light. However, the synthesis and purification of such materials is complex and obtaining both enantiomers is not always possible. The current work focus on a new synthetic pathway, possibly simpler and more versatile, using chiral hybrid or inorganic nano-helices and organic fluorophores interacting together. The aggregation of chromophores around the template will form chiral fluorescent nano-objects. The first chapter explains how chirality is present in many fields and at every scale, from molecules to daily objects. We will discuss the way of inducting or transferring chirality. The second facet of this work, light-matter interactions, will also be explained, concerning both absorption and emission of light, but also on how molecular assembly can affect these properties. We will study into detail the very particular case of circular dichroism and circularly polarized luminescence. Finally, we will see the existing systems that are used to obtain these properties and the drawback of these materials. In this work, we chose to use two systems. The first, constituted of organic nano-helices in a silica shell, has the advantage of using the organic template confined in chiral nano-space to induce chirality to the organic chromophores in interaction with them molecularly, but also through aggregation due to the confinement. The disadvantage being that this system is not robust toward environmental changes. The alternative approach is to use the silica shell as an inorganic template for the covalent grafting of fluorophores onto its surface. In the second chapter, the method for the synthesis of nano-structures is described, along with an explanation on the choice and synthesis of the chromophores used in this study. Finally, the characterization processes used are detailed. The third chapter will focus on the results we obtained when integrating achiral chromophores into hybrid helices or by grafting then onto the silica surface. We will see the importance of the intermolecular assembly and of the interaction with a chiral environment to obtain circular dichroism and circularly polarized luminescence through chiral induction. Various fluorophores are presented and compared allowing the understanding of the key parameters for chirality induction of each type of structure.In the last chapter, more complex systems are studied using molecules presenting chiroptical properties in solution state or having the ability to form self-assemblies showing such properties. The objective will be to tune the chiroptical properties of these chromophores, by the use of hybrid helices to force a specific organization. The last part will focus on the synthesis of fluorescent carbon based quantum dots using hybrid structures. These quantum dots, can retain the shape of the original structure and show circular dichroism or circularly polarized luminescence without needing to form a complex with an external source of molecular chirality
Gauthier, Étienne. « Chiral complexes based on helicenic N-heterocyclic carbenes : synthesis, structure, photophysical and chiroptical properties ». Thesis, Rennes 1, 2020. http://www.theses.fr/2020REN1S083.
Texte intégralMy PhD work was dedicated to the synthesis and the study of novel chiral transition metal complexes (rhenium, iridium, copper, gold) bearing NHC-helicenes ligands and to the study of their chiroptical and photophysical properties. The first subject focused on the preparation and the study of CP-phosphorescent complexes of cyclometalated rhenium(I) complexes bearing NHC-helicenic (N^C:) ligands. The influence of the ligand design, ancillary ligands and geometry of the complexes on the chiroptical and photophysical properties has been highlighted. In the second project, we have prepared novel chiral cyclometalated iridium complexes bearing one or multiple N-[6]helicenyl- benzimidazolylidene ligands.Then, the attention has been focused on monodentate complexes. Thus, in the third project, a chiral copper complex bearing a helicenic-NHC ligand which emits circularly polarized fluorescence was successfully obtained. Finally, chiral monodentate helicenic-NHC gold(I) complexes have been prepared. During this project, the electronic properties (sigma-donating et pi-accepting) of a helicenic-NHC were investigated
Nishikawa, Tsuyoshi. « Screw-sense Control of Helical Poly(quinoxaline-2,3-diyl)s for Chirality-switchable Asymmetric Catalysts and Luminescent Materials ». 京都大学 (Kyoto University), 2017. http://hdl.handle.net/2433/225637.
Texte intégralSchulte, Thorben Rüdiger. « Metal- and Ligand-Centered Chirality in Square-Planar Coordination Compounds ». Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2018. http://hdl.handle.net/21.11130/00-1735-0000-0005-126A-0.
Texte intégralLivres sur le sujet "Circularly Polarized Luminescence (CPL)"
Mori, Tadashi, dir. Circularly Polarized Luminescence of Isolated Small Organic Molecules. Singapore : Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2309-0.
Texte intégralMori, Tadashi. Circularly Polarized Luminescence of Isolated Small Organic Molecules. Springer, 2020.
Trouver le texte intégralMori, Tadashi. Circularly Polarized Luminescence of Isolated Small Organic Molecules. Springer Singapore Pte. Limited, 2021.
Trouver le texte intégralWu, Tao, You-Xuan Zheng, Giovanna Longhi et Ga-Lai Law, dir. Chiral Organic Chromophoric Systems in the Enhancement of Circularly Polarized Luminescence. Frontiers Media SA, 2021. http://dx.doi.org/10.3389/978-2-88966-708-6.
Texte intégralChapitres de livres sur le sujet "Circularly Polarized Luminescence (CPL)"
Gussakovsky, Eugene. « Circularly Polarized Luminescence (CPL) of Proteins and Protein Complexes ». Dans Reviews in Fluorescence 2008, 425–59. New York, NY : Springer New York, 2009. http://dx.doi.org/10.1007/978-1-4419-1260-2_18.
Texte intégralMorisaki, Yasuhiro. « Circularly Polarized Luminescence (CPL) Based on Planar Chiral [2.2]Paracyclophane ». Dans Progress in the Science of Functional Dyes, 343–74. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4392-4_10.
Texte intégralChen, Chuan-Feng, et Yun Shen. « Circularly Polarized Luminescence and Organic Electronics ». Dans Helicene Chemistry, 229–45. Berlin, Heidelberg : Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-53168-6_12.
Texte intégralZinna, Francesco, Elodie Brun, Alexandre Homberg et Jérôme Lacour. « Circularly Polarized Luminescence from Intramolecular Excimers ». Dans Circularly Polarized Luminescence of Isolated Small Organic Molecules, 273–92. Singapore : Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2309-0_12.
Texte intégralNakashima, Takuya, et Tsuyoshi Kawai. « Photo-Switching of Circularly Polarized Luminescence ». Dans Circularly Polarized Luminescence of Isolated Small Organic Molecules, 177–95. Singapore : Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2309-0_8.
Texte intégralHall, Michael John, et Santiago de la Moya. « BODIPY Based Emitters of Circularly Polarized Luminescence ». Dans Circularly Polarized Luminescence of Isolated Small Organic Molecules, 117–49. Singapore : Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2309-0_6.
Texte intégralImai, Yoshitane. « Circularly Polarized Luminescence from Solid-State Chiral Luminophores ». Dans Advances in Organic Crystal Chemistry, 325–40. Singapore : Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5085-0_16.
Texte intégralSuzuki, Satoko. « Principles and Applications of Circularly Polarized Luminescence Spectrophotometer ». Dans Circularly Polarized Luminescence of Isolated Small Organic Molecules, 309–25. Singapore : Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2309-0_14.
Texte intégralImai, Yoshitane. « Circularly Polarized Luminescence of Axially Chiral Binaphthyl Fluorophores ». Dans Circularly Polarized Luminescence of Isolated Small Organic Molecules, 11–30. Singapore : Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2309-0_2.
Texte intégralCrassous, Jeanne. « Circularly Polarized Luminescence in Helicene and Helicenoid Derivatives ». Dans Circularly Polarized Luminescence of Isolated Small Organic Molecules, 53–97. Singapore : Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2309-0_4.
Texte intégralActes de conférences sur le sujet "Circularly Polarized Luminescence (CPL)"
Barnes, Michael D., Ruthanne Hassey-Paradise et D. Venkataraman. « Circularly Polarized Luminescence from Single Chiral Molecules ». Dans Laser Science. Washington, D.C. : OSA, 2009. http://dx.doi.org/10.1364/ls.2009.lsmb4.
Texte intégralSzeto, Bryan, Peter C. P. Hrudey, Mike Taschuk et Michael J. Brett. « Circularly polarized luminescence from chiral thin films ». Dans Integrated Optoelectronic Devices 2006, sous la direction de Liang-Chy Chien. SPIE, 2006. http://dx.doi.org/10.1117/12.646452.
Texte intégralBjorknas, Kristina, Peter Raynes, Sandra Gilmour, Victor Christou et Kai Look. « Circularly polarized luminescence from an organoterbium emitter embedded in a chiral polymer ». Dans International Symposium on Optical Science and Technology, sous la direction de Akhlesh Lakhtakia, Graeme Dewar et Martin W. McCall. SPIE, 2002. http://dx.doi.org/10.1117/12.472990.
Texte intégralLe, Khai Q., et Hiromi Okamoto. « Dissymmetry between left- and right-handed circularly polarized photoluminescence enhancement of plasmonic nanostructures ». Dans JSAP-OSA Joint Symposia. Washington, D.C. : Optica Publishing Group, 2017. http://dx.doi.org/10.1364/jsap.2017.5a_a410_2.
Texte intégralYamamoto, Yohei, Osamu Oki, HIroshi Yamagishi et Takashige Omatsu. « Robust angular anisotropy of circularly polarized luminescence from chiral π-conjugated polymer microspheres with twisted bipolar configuration ». Dans Optical Manipulation and Structured Materials Conference, sous la direction de Takashige Omatsu. SPIE, 2022. http://dx.doi.org/10.1117/12.2658794.
Texte intégralAkimoto, R., K. Ando, F. Sasaki, S. Kobayashi et T. Tani. « Femtosecond Carrier Spin Dynamics in CdTe/Cd0.6Mn0.4Te Quantum Wells ». Dans International Conference on Ultrafast Phenomena. Washington, D.C. : Optica Publishing Group, 1996. http://dx.doi.org/10.1364/up.1996.tue.38.
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