The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A new drug delivery model is proposed in vitro in a micelle to micelle system. Gold nanoparticles can be encapsulated by micelles of amphiphilic diblock copolymers; it provides an environment to incorporate drug molecules, forming the Au@polymer-drug conjugates. Gold nanoparticles are fluorescent quenchers, allowing the release kinetics of fluorescent probes from nanoparticles to be followed by fluorescence...
A new catalytic dynamic spectrofluorimetry method is proposed for determination of trace tin which is based on the reaction between potassium periodate and the new type fluorescent reagent 3-m- chlorophenyl-5-(2'- arsenoxylphenylazo) rhodanine (3CIRAAP). The fluorescence intensity is investigated to be sharply quenched by the oxidation of 3-m-chlorophenyl-5- (2'-arsenoxylphenylazo) rhodanine by potassium...
Conjugated polymer based on thiophene having high reasonably quantum yield has been synthesized. A bulky butoxycarbonylmethyl urethane moiety as a side group is attached to the polymer backbone. The polymer is characterized by 1H NMR, FT-IR, UV-Visible absorption and fluorescence spectroscopy. Thin film fluorescence sensors based on this material were fabricated through a spin-coating technique. The...
Hematoporphyrin monomethyl ether (HMME) that is the second generation photosensitizers is a new and promising porphyrin related photosensitizer for photodynamic therapy and diagnosis in certain tumor. The binding of HMME to bovine serum albumin (BSA) in aqueous solution was studied using fluorescence spectra and absorption spectra. It was shown that HMME has a powerful ability to quench the BSA fluorescence...
We demonstrate the use of single-walled carbon nanotubes as nano-optical probes in apertureless near-field fluorescence microscopy. The carbon nanotubes strongly quench fluorescence leading to near-field contrast with spatial resolution of ~20 nm.
The binding of efonidipine to bovine serum albumin (BSA) was investigated by fluorescence spectroscopy and circular dichroism (CD) technique. The quenching mechanism of fluorescence BSA by efonidipine showed that efonidipine quenched the fluorescence of tryptophan residue mainly through the collision mode. The thermodynamic parameters DeltaH0 and DeltaS0 were calculated to be 75.95 kJldrmo-1 and 342...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.