Results 241 to 250 of about 78,764 (278)

Breaking the Photostability and pH Limitation of Halo‐Fluoresceins through Chitosan Conjugation

Advances in Materials, 2023
Halo‐fluoresceins are widely used in cell and tissue staining, intracellular sensing, and photodynamic therapy, but their notorious photo‐instability and pH dependence restrict their applications, especially in long‐term visible light exposure and acidic
Y. Wang, Yunhe Lang, Qin Yang, Peng Wu
semanticscholar   +1 more source

Silinanyl Rhodamines and Silinanyl Fluoresceins for Super-Resolution Microscopy.

Journal of Physical Chemistry B, 2021
Single-molecule localization microscopy (SMLM) enables the visualization of biomolecules at unprecedented resolution and requires control of the fluorescent blinking (ON/OFF) states of fluorophores to detect single-molecule fluorescence without ...
D. Hara, Shin-Nosuke Uno, Takafumi Motoki, Yuji Kazuta, Yoshihiko Norimine, Masatoshi Suganuma, Shingo Fujiyama, Y. Shimaoka, K. Yamashita, Masaya Okada, Y. Nishikawa, H. Amino, S. Iwanaga   +12 more
semanticscholar   +1 more source

Photoinitiated Free-Radical Polymerization of 4,5,6,7-Tetrahalogenated Fluoresceins.

Chemistry - An Asian Journal, 2021
We demonstrated the photoredox catalytic performances of fluorescein derivatives, bearing heavy halogen atoms (Br or I) on a benzoic acid group, using photoinitiated free-radical polymerization.
Young-Jae Jung, Joseph B. Nganga, Jang-Hoon Cho, Hong-In Lee, Jungkyu K. Lee   +4 more
semanticscholar   +1 more source

Photophysics of Halogenated Fluoresceins: Involvement of Both Intramolecular Electron Transfer and Heavy Atom Effect in the Deactivation of Excited States

Photochemistry and Photobiology, 2010
The fluorescence quantum yield (Φf), fluorescence lifetime (τf), intersystem crossing quantum yield (Φisc) and redox potentials of seven halogenated fluoresceins in their dianion forms were measured and compared in methanol to get a deep insight into the
Xian-Fu Zhang, I. Zhang, Lihong Liu
semanticscholar   +1 more source

Cell-trappable quinoline-derivatized fluoresceins for selective and reversible biological Zn(II) detection.

Inorganic Chemistry, 2010
The synthesis and spectroscopic characterization of two new, cell-trappable fluorescent probes for Zn(II) are presented. These probes, 2-(4,5-bis(((6-(2-ethoxy-2-oxoethoxy)quinolin-8-yl)amino)methyl)-6-hydroxy-3-oxo-3H-8 xanthen-9-yl)benzoic acid (QZ2E ...
Lindsey E. McQuade, S. Lippard
semanticscholar   +1 more source

Photostability and Spectral Properties of Fluorinated Fluoresceins and their Biarsenical Derivatives: A Combined Experimental and Theoretical Study

Photochemistry and Photobiology, 2009
New fluorinated biarsenical derivatives with improved optical properties based on highly photostable analogs of fluorescein were recently introduced.
C. Spagnuolo, W. Massad, Sandra Miskoski, G. Menéndez, N. García, E. Jares-Erijman   +5 more
semanticscholar   +1 more source

Design of a practical fluorescent probe for superoxide based on protection-deprotection chemistry of fluoresceins with benzenesulfonyl protecting groups.

Chemistry, 2007
A strategy for designing probes based on protection-deprotection chemistry involving fluoresceins and their benzenesulfonyl (BES) derivatives has led to the development of a much more practical superoxide (O(2) (-.)) probe than the previously reported ...
H. Maeda, Kayoko Yamamoto, Iho Kohno, Leila Hafsi, Norio Itoh, S. Nakagawa, N. Kanagawa, Keiichiro Suzuki, T. Uno   +8 more
semanticscholar   +1 more source

Syntheses of regioisomerically pure 5- or 6-halogenated fluoresceins.

Journal of Organic Chemistry, 2003
Three routes to regioisomerically pure 5- and 6-iodofluoresceins or 5- and 6-bromofluoresceins are described. The first, shown in Scheme 1, involves diazotization/iodination of the corresponding aminofluoresceins.
G. Jiao, J. Han, K. Burgess
semanticscholar   +1 more source

Synthesis of Fluorinated Fluoresceins

, 1997
Several novel fluorinated fluoresceins (Oregon Green dyes) were prepared by the reaction of fluororesorcinols with phthalic anhydride and its derivatives.
Wei-Chuan Sun, K. Gee, D. Klaubert, R. Haugland   +3 more
semanticscholar   +1 more source

Die prototropen Formen des Fluoresceins

, 1958
Durch Zugabe von Wasser, Ammoniak und Schwefelsaure zu Losungen von Fluorescein in reinem Dioxan werden die vier moglichen prototropen Formen des Fluoresceins absorptionsspektroskopisch nachgewiesen.
V. Zanker, W. Peter
semanticscholar   +1 more source