Results 11 to 20 of about 427,538 (258)

A Fusion-Spliced Near-Field Optical Fiber Probe Using Photonic Crystal Fiber for Nanoscale Thermometry Based on Fluorescence-Lifetime Measurement of Quantum Dots

Sensors, 2011
We have developed a novel nanoscale temperature-measurement method using fluorescence in the near-field called Fluorescence Near-field Optics Thermal Nanoscopy (Fluor-NOTN).
Toshiharu Saiki, Yuji Nagasaka, Yoshihiro Taguchi, Takuro Fujii   +3 more
doaj   +1 more source

RETRACTED: An acridone-derived fluorescent off-on probe for detection and in vivo imaging of nitroreductase

Frontiers in Materials, 2023
Understanding the functions of enzymes in various physiological processes is important, but the design of signaling probes for fast analysis of enzymatic activity is particularly challenging.
Meicen Liu, Guanyu Chen, Guanyu Chen, Lilan Xu, Lilan Xu, Tingting Chen, Tingting Chen, Wenqian Chen, Wenqian Chen, Jinghua Chen, Jinghua Chen, Xi Zhang   +11 more
doaj   +1 more source

A Near-Infrared Fluorescent Probe Based on a FRET Rhodamine Donor Linked to a Cyanine Acceptor for Sensitive Detection of Intracellular pH Alternations

Molecules, 2018
A fluorescence resonance energy transfer (FRET)-based near-infrared fluorescent probe (B+) for double-checked sensitive detection of intracellular pH changes has been synthesized by binding a near-infrared rhodamine donor to a near-infrared cyanine ...
Yibin Zhang, Jianheng Bi, Shuai Xia, Wafa Mazi, Shulin Wan, Logan Mikesell, Rudy L. Luck, Haiying Liu   +7 more
doaj   +1 more source

Study of probe-sample distance for biomedical spectra measurement

BioMedical Engineering OnLine, 2011
Background Fiber-based optical spectroscopy has been widely used for biomedical applications. However, the effect of probe-sample distance on the collection efficiency has not been well investigated. Method In this paper, we presented a theoretical model
Li Lei, Fan Shuzhen, Wang Bowen, Wang Cong   +3 more
doaj   +1 more source

Direct Light-up of cAMP Derivatives in Living Cells by Click Reactions

Molecules, 2013
8-Azidoadenosine 3′,5′-cyclic monophosphate (8-azido cAMP) was directly detected in living cells, by applying Cu-free azide-alkyne cycloaddition to probe cAMP derivatives by fluorescence light-up.
Yan Xu, Hongshan Liu, Tetsuya Hayashi, Makoto Komiyama, Kenichiro Ito   +4 more
doaj   +1 more source

Fluorescence Imaging Using Enzyme-Activatable Probes for Real-Time Identification of Pancreatic Cancer

Frontiers in Oncology, 2021
IntroductionRadical resection is the only curative treatment for pancreatic cancer, which is a life-threatening disease. However, it is often not easy to accurately identify the extent of the tumor before and during surgery.
Ryugen Takahashi, Takeaki Ishizawa, Masumitsu Sato, Yoshinori Inagaki, Mariko Takanka, Yugo Kuriki, Mako Kamiya, Tetsuo Ushiku, Yasuteru Urano, Yasuteru Urano, Kiyoshi Hasegawa   +10 more
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A fluorescent membrane tension probe [PDF]

Nature Chemistry, 2018
Cells and organelles are delimited by lipid bilayers in which high deformability is essential to many cell processes, including motility, endocytosis and cell division. Membrane tension is therefore a major regulator of the cell processes that remodel membranes, albeit one that is very hard to measure in vivo. Here we show that a planarizable push-pull
Colom, Adai, Derivery, Emmanuel, Soleimanpour, Saeideh, Tomba, Caterina, Molin, Marta Dal, Sakai, Naomi, Gonzalez-Gaitan, Marcos, Matile, Stefan, Roux, Aurelien   +8 more
openaire   +3 more sources

A Near-Infrared Ratiometric Fluorescent Probe for Highly Selective Recognition and Bioimaging of Cysteine

Frontiers in Chemistry, 2019
A benzothiazole-based near-infrared (NIR) ratiometric fluorescent probe (HBT-Cys) was developed for discriminating cysteine (Cys) from homocysteine (Hcy) and glutathione (GSH).
Xuan Zhang, Xuan Zhang, Li Zhang, Wei-Wei Ma, Yong Zhou, Zhen-Ni Lu, Suying Xu   +6 more
doaj   +1 more source

Variability and cost implications of three generations of the Roche LightCycler® 480. [PDF]

PLoS ONE, 2018
Real time PCR has become a dominant method for the highly sensitive detection of pathogens in clinical material. Real time PCR can generate a fluorescence signal by using fluorescence labelled probes, allowing us to detect and semi quantify the amount of
Maria Dullaert-de Boer, Onno W Akkerman, Marloes Vermeer, Dorine L J Hess, Huib A M Kerstjens, Richard M Anthony, Tjip S van der Werf, Dick van Soolingen, Adri G M van der Zanden   +8 more
doaj   +1 more source

A Dansyl-Rhodamine Based Fluorescent Probe for Detection of Hg2+ and Cu2+

Acta Chimica Slovenica, 2017
A novel fluorescent probe based on dansyl-appended rhodamine B was developed. The probe can selectively recognize and sense Hg2+ and Cu2+ from other common metal ions by showing unique fluorescence and absorption characteristics.
Enju Wang, Shizhuang Yuan, Wei Su
doaj   +1 more source