Готові списки джерел за темами / Borondipyrromethene

Добірка наукової літератури з теми "Borondipyrromethene"

Автор: Grafiati

Опубліковано: 6 вересня 2023

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Статті в журналах з теми "Borondipyrromethene"

Özcan, Emrah, Gürkan Keşan, Burcu Topaloğlu, Esra Tanrıverdi Eçik, Ayşegül Dere, Fahrettin Yakuphanoglu, and Bünyemin Çoşut. "Synthesis, photophysical, DFT and photodiode properties of subphthalocyanine–BODIPY dyads." New Journal of Chemistry 42, no. 7 (2018): 4972–80. http://dx.doi.org/10.1039/c7nj04568a.

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Chen, Lei, Yifei Jiang, Shihan Xu, Jicheng Zhang, Seung-Ryoung Jung, Jiangbo Yu, Xuanjun Zhang, and Daniel T. Chiu. "BODIPY-based near-infrared semiconducting polymer dot for selective yellow laser-excited cell imaging." RSC Advances 13, no. 22 (2023): 15121–25. http://dx.doi.org/10.1039/d3ra01083j.

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An efficient borondipyrromethene based near-infrared semiconducting polymer dot with simultaneously narrow absorption and emission bands was designed, and successfully used for selective yellow laser excited cell imaging.

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Hua, Qiong-Xin, Bo Xin, Zu-Jing Xiong, Wen-Liang Gong, Chong Li, Zhen-Li Huang, and Ming-Qiang Zhu. "Super-resolution imaging of self-assembly of amphiphilic photoswitchable macrocycles." Chemical Communications 53, no. 18 (2017): 2669–72. http://dx.doi.org/10.1039/c7cc00044h.

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Self-assembly of an amphiphilic photoswitchable fluorescent macrocycle methoxy-tetraethylene glycol-substituted hexaarylbiimidazole-borondipyrromethene can be observed directly under a super-resolution fluorescence microscope, with the nanoscale resolution beyond the optical diffraction limitation.

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Xu, Jingjing, Jingying Zhai, Yanmei Xu, Jingwei Zhu, Yu Qin, and Dechen Jiang. "A near-infrared fluorescent aza-bodipy probe for dual-wavelength detection of hydrogen peroxide in living cells." Analyst 141, no. 8 (2016): 2380–83. http://dx.doi.org/10.1039/c6an00262e.

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A boronic acid functionalized aza-borondipyrromethene dye (azaBDPBA) was applied to the dual-wavelength detection of hydrogen peroxide with high selectivity, which was loaded into cells to indicate the alteration of intracellular hydrogen peroxide during biological processes.

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Olivier, Jean-Hubert, Alexandre Haefele, Pascal Retailleau, and Raymond Ziessel. "Borondipyrromethene Dyes with Pentane-2,4-dione Anchors." Organic Letters 12, no. 3 (February 5, 2010): 408–11. http://dx.doi.org/10.1021/ol902386u.

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García-Moreno, Inmaculada, Dakui Zhang, Ángel Costela, Virginia Martín, Roberto Sastre, and Yi Xiao. "Red-edge laser action from borondipyrromethene dyes." Journal of Applied Physics 107, no. 7 (April 2010): 073105. http://dx.doi.org/10.1063/1.3327437.

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Mula, Soumyaditya, Stéphane Frein, Virginie Russo, Gilles Ulrich, Raymond Ziessel, Joaquín Barberá, and Robert Deschenaux. "Red and Blue Liquid-Crystalline Borondipyrromethene Dendrimers." Chemistry of Materials 27, no. 7 (March 23, 2015): 2332–42. http://dx.doi.org/10.1021/cm503577y.

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Qin, Wenwu, Mukulesh Baruah, Mark Van der Auweraer, Frans C. De Schryver, and Noël Boens. "Photophysical Properties of Borondipyrromethene Analogues in Solution." Journal of Physical Chemistry A 109, no. 33 (August 2005): 7371–84. http://dx.doi.org/10.1021/jp052626n.

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Zhao, Chunchang, Peng Feng, Jian Cao, Yulin Zhang, Xuzhe Wang, Yang Yang, Yanfen Zhang, and Jinxin Zhang. "6-Hydroxyindole-based borondipyrromethene: Synthesis and spectroscopic studies." Org. Biomol. Chem. 10, no. 2 (2012): 267–72. http://dx.doi.org/10.1039/c1ob06200j.

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Frein, Stéphane, Franck Camerel, Raymond Ziessel, Joaquín Barberá, and Robert Deschenaux. "Highly Fluorescent Liquid-Crystalline Dendrimers Based on Borondipyrromethene Dyes." Chemistry of Materials 21, no. 17 (September 8, 2009): 3950–59. http://dx.doi.org/10.1021/cm9008078.

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Дисертації з теми "Borondipyrromethene"

Bellier, Quentin. "Ingénierie moléculaire pour l'optimisation des effets liés à l'absorption multiphotonique sur la famille Aza-Bodipy : application à la limitation optique aux fréquences des télécommunications." Thesis, Lyon, École normale supérieure, 2011. http://www.theses.fr/2011ENSL0690.

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La limitation optique (LO) est un processus de protection des détecteurs optiques (yeux, caméras…) vis-à-vis des agressions laser. Le développement rapide de ces derniers aux fréquences des télécommunications a encouragé l’ingénierie moléculaire pour la LO dans cette fenêtre spectrale, en particulier à 1500 nm. Un des principaux mécanismes de la LO est l’absorption multiphotonique et plus particulièrement l’absorption à deux photons (ADP). Il s’agit d’un phénomène d’optique non-linéaire du troisième ordre au cours duquel un électron est promu de l’état fondamental vers l’état excité par absorption simultanée de deux photons. De plus, des travaux récents ont mis en évidence que le phénomène de LO peut être exalté par des processus d’absorption à l’état excité (AEE) induits par ADP. Dans ce contexte, cette thèse décrit la synthèse d’une nouvelle famille de chromophores de type aza-dipyrrométhène de bore (Aza-Bodipy), fonctionnalisés par des groupements donneur ou accepteur d’électrons. Ces molécules ont un comportement de limiteur optique sur toute la gamme spectrale voulue, avec un maximum d’efficacité vers 1300 nm. Les résultats ont été interprétés sur la base de deux phénomènes : l’ADP, suivie de l’AEE pour un procédé d’absorption globale à trois photons. Ces deux processus ont été mesurés séparément et des relations structure-activité ont été établies, afin de rationnaliser les données de LO. L’importance du transfert de charge et la superposition spectrale des deux phénomènes sont alors apparues comme les paramètres clefs à optimiser. En vue d’une application dans un dispositif optique réel, il est nécessaire que les chromophores soient incorporés dans un matériau solide, qui peut être poli et transformé. Ainsi, les composés synthétisés ont été insérés avec succès dans une matrice sol-gel. Pour la première fois, des matériaux de qualité optique ont été réalisés, possédant des propriétés de LO dans l’infra-rouge très performantes et meilleures qu’en solution
The optical power limiting (OPL) is a protection process of detectors (eyes, cameras…) against laser aggression. The rapid development of frequency-tunable pulsed lasers up to telecommunication wavelengths led to the design of new materials for nonlinear absorption in this spectral range, in particular at 1500 nm. Mutiphotonic absorption, such as the two-photon absorption (TPA) is one of the mechanisms involved in the OPL. TPA is a third order nonlinear phenomenon that promotes a molecule to an excited state by the simultaneous absorption of two photons. Moreover, the overall OPL efficiency can be enhanced by excited state absorption (ESA). In this context, this thesis describes the synthesis of a new family of versatile near infra-red dyes, namely aza-borondipyrromethene (Aza-Bodipy) featuring several sites of functionalization by electro-donating or electro-withdrawing moieties. These molecules present the typical behavior of optical limiters at telecommunication wavelengths, with a maximal efficiency around 1300 nm. OPL curves were interpreted on the basis of two phenomena: TPA, followed by ESA for an overall 2+1 photons absorption. These two processes have been measured independently and structure-activity relationships have been established in order to rationalize OPL experiments. The charge transfer effect and the spectral overlap between TPA and ESA are therefore the key parameters. For practical use of OPL functions, it is required for the chromophores to be introduced into a solid material, which enables polishing and other post-processing. Therefore, Aza-Bodipy dyes have been successfully incorporated to a solid matrix using the sol-gel technique. For the first time, optical quality materials have been prepared featuring OPL properties in the infra-red, which are better than the ones in solution

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Bhattacharyya, Arnab. "Studies on BODIPY-conjugates of Copper and Zinc for Cellular Imaging and Photodynamic Therapy." Thesis, 2021. https://etd.iisc.ac.in/handle/2005/5669.

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Cancer is a dreadful disease that occurs due to the uncontrolled division of abnormal cells. Though there are different therapeutic modalities available for cancer, chemotherapy is considered as the most practiced method. It is also well established that the transition metal-based chemotherapeutic agents provide several medicinal benefits in comparison to the purely organic counterparts. However, the efficacy of metal-based anticancer agents, especially the commercial platinum-based drugs is greatly reduced due to the dose-limiting toxicity and associated adverse effects. Shifting to photodynamic therapeutic treatment modality (PDT) may provide better spatio-temporal control on drug action but the clinically approved porphyrinic photosensitizers also show limited success owing to their hydrophobic nature and aggregation-induced photobiological deactivation-related issues under physiological conditions. Though Photofrin®, the FDA approved PDT drug, is found to be useful against a vast group of cancers, it suffers from additional drawbacks like skin photosensitivity and hepatotoxicity. It has been documented that the insertion of selective transition metals inside the porphyrinic core could result significant improvement in their photophysical and photobiological activities but even with the development of metallo-porphyrins, the challenges regarding the hydrophobic and aggregative-nature of these macrocyclic photosensitizers could not be addressed successfully. One possible way is the introduction of non-porphyrinic photosenstizers that should contain only the positive attributes of porphyrin or phthalocyanine-based classical PDT agents. BODIPY or boron-dipyrromethene-based dyes have recently emerged as the preferred alternatives, which are also known as ‘half of porphyrin’ or ‘porphyrin’s little sisters’ due to their close structural proximity with porphyrin unit. However, despite several promises, quite surprisingly, none of the BODIPY-based molecules have received clinical approval yet for the treatment of PDT. The limited success of BODIPY-based photosensitizers in clinical level could be attributed to their aqueous insolubility and limited physiological stability leading to poor pharmacokinetic behaviour under physiological conditions, especially applicable for the heavy atom (I, Br)-tethered BODIPY-based photosensitizers. Present thesis focuses to address these challenges alongside establishing the virtually unexplored chemistry of metallo-BODIPY conjugates as PDT photosensitizers. With the objective to explore the medicinal aspects of BODIPY dyes as the cellular imaging and photosensitizing unit inserted within the ligand system of transition metal complexes, we selected copper and zinc as our preferred choices since these cost-effective metals are essential for our survival and their usage can also circumvent the problem related with heavy-metal toxicity. Current work thus focuses on the design, synthesis, physicochemical and photobiological aspects of multiple Cu(II)-BODIPY and Zn(II)-BODIPY conjugates and evaluates their suitability as next-generation replacements of existing metallo-porphyrinoids as PDT agents, both from the therapeutic as well as diagnostic point of view. Taking the advantage of variable coordination number of copper and zinc and the flexible coordination geometry of Cu and Zn-based complexes, mixed ligand metallo-BODIPY conjugates are also developed to achieve additional benefits such as drug selectivity, intracellular organelle targeting, modulation of metal-centered redox activity and regulation in dark toxicity, simultaneous activation of multiple photodynamic pathways and augmented imaging-cum-photosensitizing activities. References: A. Bhattacharyya and A. R. Chakravarty et al., Med. Chem. Commun., 2015, 6, 846-851; RSC Adv., 2016, 6, 104474-104482; Dalton Trans., 2018, 47, 5019-5030; Dalton Trans., 2021, 50, 103-115; Eur. J. Med. Chem., 2021, 220, 113438.
CSIR, DST-SERB, IISc

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Тези доповідей конференцій з теми "Borondipyrromethene"

Chang, Hao-Jung, Sanaz Faryadras, Natalia Munera, Sepehr Benis, Mykhailo V. Bondar, Sylvain David, Oliver Maury, et al. "Nonlinear absorption measurements of aza- borondipyrromethene dyes." In CLEO: Applications and Technology. Washington, D.C.: OSA, 2020. http://dx.doi.org/10.1364/cleo_at.2020.jth2c.5.

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Chang, Hao-Jung, Mykhailo V. Bondar, Sylvain David, Oliver Maury, Gerard Berginc, Chantal Andraud, David J. Hagan, and Eric W. Van Stryland. "Nonlinear optical properties of functionalized aza- borondipyrromethene chromophores." In CLEO: Applications and Technology. Washington, D.C.: OSA, 2021. http://dx.doi.org/10.1364/cleo_at.2021.jtu3a.71.

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Chang, Hao Jung, Sanaz Faryadras, Sepehr Benis, Sylvain David, Oliver Maury, Gerard Berginc, Andraud Chantal, David J. Hagan, and Eric W. Van Stryland. "Nonlinear Absorption Measurements of Aza-Borondipyrromethene Dyes by the Z-Scan Method." In 2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID). IEEE, 2019. http://dx.doi.org/10.1109/rapid.2019.8864405.

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Saxena, Vibha, P. Veerender, S. P. Koiry, A. K. Chauhan, D. K. Aswal, S. Mula, Neelam Shivran, S. Chattopadhyay, and S. K. Gupta. "Borondipyrromethane (BODIPY) as sensitizer for dye sensitized solar cell." In INDIAN VACUUM SOCIETY SYMPOSIUM ON THIN FILMS: SCIENCE AND TECHNOLOGY. AIP, 2012. http://dx.doi.org/10.1063/1.4732438.

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