Results 21 to 30 of about 67,193 (339)

Fluorescent Membrane Probes Based on a Coumarin-Thiazole Scaffold

Acta Chimica Slovenica, 2019
Biological functions of cell membranes and their correlation to the heterogeneity of the latter’s lipid composition are still poorly understood. Fluorescence provides one of the most versatile tools for studying biological membranes.
Stane Pajk, Maja Garvas, Janez Štrancar
doaj   +1 more source

Monomer and Oligomer Transition of Zinc Phthalocyanine Is Key for Photobleaching in Photodynamic Therapy

Molecules, 2023
Photodynamic therapy (PDT) is recognized as a powerful method to inactivate cells. However, the photosensitizer (PS), a key component of PDT, has suffered from undesired photobleaching. Photobleaching reduces reactive oxygen species (ROS) yields, leading
Dafeng Liu, Longguang Jiang, Jincan Chen, Zhuo Chen, Cai Yuan, Donghai Lin, Mingdong Huang   +6 more
doaj   +1 more source

Oxygen- and pH-Dependent Photophysics of Fluorinated Fluorescein Derivatives: Non-Symmetrical vs. Symmetrical Fluorination

Sensors, 2020
Fluorescein, and derivatives of fluorescein, are often used as fluorescent probes and sensors. In systems where pH is a variable, protonation/deprotonation of the molecule can influence the pertinent photophysics.
Ciaran K. McLoughlin, Eleni Kotroni, Mikkel Bregnhøj, Georgios Rotas, Georgios C. Vougioukalakis, Peter R. Ogilby   +5 more
doaj   +1 more source

EasyFRAP-web: a web-based tool for the analysis of fluorescence recovery after photobleaching data

Nucleic Acids Res., 2018
Understanding protein dynamics is crucial in order to elucidate protein function and interactions. Advances in modern microscopy facilitate the exploration of the mobility of fluorescently tagged proteins within living cells.
Grigorios Koulouras, Andreas Panagopoulos, M. Rapsomaniki, Nickolaos-Nikiforos Giakoumakis, S. Taraviras, Z. Lygerou   +5 more
semanticscholar   +1 more source

Effect of UV and Visible Radiation on Optical Properties of Chromophoric Dissolved Organic Matter Released by Emiliania huxleyi

Journal of Marine Science and Engineering, 2020
Photodegradation is a natural process that strongly affects the chromophoric fraction of dissolved organic matter (DOM), especially in surface water of the oceans. In the euphotic zone, the concentration and quality of DOM are mostly dependent on primary
Simona Retelletti Brogi, Bruno Charrière, Margherita Gonnelli, Frédéric Vaultier, Richard Sempéré, Stefano Vestri, Chiara Santinelli   +6 more
doaj   +1 more source

Photobleaching by Spectralis Fixation Target [PDF]

JAMA Ophthalmology, 2016
The aim of this study is to determine whether the cross-shaped fixation target in a spectral-domain optical coherence tomography instrument (Spectralis; Heidelberg Engineering) could produce a cross-shaped increase fundus autofluorescence artifact on subsequent imaging.Thirty eyes of 15 healthy volunteers (8 women and 7 men; mean [SD] age 24 [3] years)
Tomasso L, Benatti L, Carnevali A, Mazzaferro A, Baldin G, Querques L, BANDELLO, FRANCESCO, QUERQUES , GIUSEPPE   +7 more
openaire   +4 more sources

Synthesis and Photostability of Cyclooctatetraene-Substituted Free Base Porphyrins

Chemistry, 2021
A series of free base meso-tetraarylporphyrins functionalized with substituents containing one, two, and four cyclooctatetraene (COT) moieties have been obtained and characterized by spectral and photophysical studies. Three COT-free porphyrins served as
Joanna Buczyńska, Agnieszka Gajewska, Aleksander Gorski, Barbara Golec, Krzysztof Nawara, Renata Rybakiewicz, Jacek Waluk   +6 more
doaj   +1 more source

Photobleaching alters the morphometric analysis of fluorescently labeled neurons and microglial cells

Pathology and Oncology Research
Photobleaching of immunofluorescence signal is a well-known phenomenon, however, its impact on derived parameters characterizing number and shape of different cell types in tissue sections is less understood. Our aim was to determine whether the duration
Tamás F. Polgár, Tamás F. Polgár, Krisztina Spisák, Krisztina Spisák, Zalán Kádár, Nora Alodah, Gabor J. Szebeni, Kata Klein, Roland Patai, László Siklós, Bernát Nógrádi, Bernát Nógrádi   +11 more
doaj   +1 more source

Imaging of Evoked Cortical Depolarizations Using Either ASAP2s, or chi-VSFP, or Di-4-Anepps, or Autofluorescence Optical Signals

Journal of Integrative Neuroscience, 2023
Background: Population voltage imaging is used for studying brain physiology and brain circuits. Using a genetically encoded voltage indicator (GEVI), “VSFP” or “ASAP2s”, or a voltage-sensitive dye, Di-4-Anepps, we conducted population voltage imaging in
Katarina D. Milicevic, Mei Hong Zhu, Brianna L. Barbeau, Ozge Baser, Zehra Y. Erol, Lan Xiang Liu, Michael Z. Lin, Srdjan D. Antic   +7 more
doaj   +1 more source

Photo-stability study of a solution-processed small molecule solar cell system: correlation between molecular conformation and degradation

Science and Technology of Advanced Materials, 2018
Solution-processed organic small molecule solar cells (SMSCs) have achieved efficiency over 11%. However, very few studies have focused on their stability under illumination and the origin of the degradation during the so-called burn-in period.
Michael J. Newman, Emily M. Speller, Jérémy Barbé, Joel Luke, Meng Li, Zhe Li, Zhao-Kui Wang, Sagar M. Jain, Ji-Seon Kim, Harrison Ka Hin Lee, Wing Chung Tsoi   +10 more
doaj   +1 more source