Dual purpose fibre – SERS pH sensing and bacterial analysis
نویسندگان
چکیده
منابع مشابه
Raman/fluorescence dual-sensing and imaging of intracellular pH distribution.
Herein, a pH-sensitive probe has been designed based on DNA modified gold nanoparticles (AuNPs) for Raman/fluorescence dual-imaging of the intracellular pH distribution. In the acidic environment of cancer cells, the configuration change of DNA on the probe surface could turn "on" Raman/fluorescence signals simultaneously.
متن کاملFunctionalized Au/Ag nanocages as a novel fluorescence and SERS dual probe for sensing.
We obtained chitosan-protected Au/Ag nanocages (NCs), i.e., hollow and porous metallic nanoparticles, by galvanic replacement reaction. Subsequently, we functionalized the NCs with a fluorescent derivative of 4-methoxy-1,8-naphtalimide (NAFTA6). The plasmonic properties of these structures, which exhibit an extinction maximum in the 700-800 nm range, allowed their use as SERS active substrates ...
متن کاملDual fluorescent labelling of cellulose nanocrystals for pH sensing.
Cellulose nanocrystals were converted into ratiometric pH-sensing nanoparticles by dual fluorescent labelling employing a facile one-pot procedure. A simple and versatile three-step procedure was also demonstrated extending the number of fluorophores available for grafting. In this method an amine group was introduced via esterification followed by a thiol-ene click reaction.
متن کاملDual Purpose Hashing
Recent years have seen more and more demand for a unified framework to address multiple realistic image retrieval tasks concerning both category and attributes. Considering the scale of modern datasets, hashing is favorable for its low complexity. However, most existing hashing methods are designed to preserve one single kind of similarity, thus improper for dealing with the different tasks sim...
متن کاملA Dual Sensor for pH and Hydrogen Peroxide Using Polymer-Coated Optical Fibre Tips
This paper demonstrates the first single optical fibre tip probe for concurrent detection of both hydrogen peroxide (H₂O₂) concentration and pH of a solution. The sensor is constructed by embedding two fluorophores: carboxyperoxyfluor-1 (CPF1) and seminaphtharhodafluor-2 (SNARF2) within a polymer matrix located on the tip of the optical fibre. The functionalised fibre probe reproducibly measure...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Analyst
سال: 2018
ISSN: 0003-2654,1364-5528
DOI: 10.1039/c8an01322e