نتایج جستجو برای: ph sensitive nanoparticles

تعداد نتایج: 539402  

Journal: :Chemosensors 2021

Here we report the rational development of a carbon dot (CDs)-based fluorescent pH nanosensor by employing an active surface preservation strategy. More specifically, citric acid, urea and fluorescein were subjected to one-pot hydrothermal treatment, which preserved fluorescein-like structures on CDs. The obtained CDs showed pH-sensitive green emission, can be used determine variations from 3.7...

Journal: :Analytical chemistry 2011
Atul Asati Charalambos Kaittanis Santimukul Santra J Manuel Perez

The reliable and sensitive detection of cancer-specific biomarkers is important for the diagnosis and treatment of cancer. Hence, detection of these biomarkers has to be reliably and rapidly performed in diverse settings. A limitation of the conventional biomarker-screening method of enzyme-linked immunosorbent assay (ELISA) is the employment of labile components, such as hydrogen peroxide and ...

Journal: :Nanoscale 2014
Riikka Arppe Tuomas Näreoja Sami Nylund Leena Mattsson Sami Koho Jessica M Rosenholm Tero Soukka Michael Schäferling

Acidic pH inside cells indicates cellular dysfunctions such as cancer. Therefore, the development of optical pH sensors for measuring and imaging intracellular pH is a demanding challenge. The available pH-sensitive probes are vulnerable to e.g. photobleaching or autofluorescence background in biological materials. Our approach circumvents these problems due to near infrared excitation and upco...

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