A fluorescent chemosensor for wide-range pH detection.
نویسندگان
چکیده
Simple polyamines, L1-L3, bearing anthracene and benzophenone units at the respective ends, behave as a fluorescent pH sensor applicable to wide-range pH detection.
منابع مشابه
Turn-On Fluorescent Chemosensor for Hg2+ Based on Multivalent Rhodamine Ligands
Rhodamine-based fluorescent chemosensors 1 and 2 exhibit selective fluorescence enhancement to Fe3+ and Hg2+ over other metal ions at 580 nm in CH(3)CN/H(2)O (3/1, v/v) solution. Bis(rhodamine) chemosensor 1, under optimized conditions (CH(3)CN/HEPES buffer (0.02 M, pH = 7.0) (95/5, v/v)), shows a high selectivity and sensitivity to Hg2+, with a linear working range of 0-50 μM, a wide pH span o...
متن کاملA Sensitive Ratiometric Fluorescent Sensor for Zinc(II) with High Selectivity
A new fluorescent Zn²⁺ chemosensor (P1) based on a functionalized porphyrin was synthesized and characterized. P1 displayed dramatic ratiometric variations in absorption and fluorescent emission spectra upon exposure to Zn²⁺ due to the formation of a 1:1 Zn²⁺/P1 complex. The sensor also exhibited high selectivity and sensitivity toward Zn²⁺ over other common metal ions in the physiological pH r...
متن کاملA simple BODIPY-aniline-based fluorescent chemosensor as multiple logic operations for the detection of pH and CO2 gas.
A simple 4-aniline boron-dipyrromethene (BODIPY) dye (1) was developed as a highly sensitive acidic pH fluorescent probe excitable with visible light based on a photoinduced electron transfer (PeT) mechanism. The pH titration indicates that the fluorescence intensity increases more than 500-fold within the pH range of 4.12-1.42 with a pKa value of 3.24 in methanol-water (1 : 1, v/v) solution, w...
متن کاملA highly selective turn-on fluorescent chemosensor for copper(II) ion
A new pyrene derivative (1) containing a diaminomaleonitrile moiety exhibits high selectivity for Cu2þ detection. Significant fluorescence enhancement was observed with chemosensor 1 in the presence of Cu2þ. However, the metal ions Agþ, Ca2þ, Cd2þ, Co2þ, Fe2þ, Fe3þ, Hg2þ, Mg2þ, Mn2þ, Ni2þ, Pb2þ, and Zn2þ produced only minor changes in fluorescence values for the system. The apparent association...
متن کاملA peptide-based fluorescent chemosensor for measuring cadmium ions in aqueous solutions and live cells.
A novel peptide fluorescent chemosensor (H2L) with a lysine backbone and both -NH2 sites conjugated with cysteine and dansyl groups has been designed and synthesized by solid phase peptide synthesis with Fmoc chemistry. This chemosensor is a promising analytical tool for detecting Cd(2+) based on the photo-induced electron transfer (PET) effect by turn-on response in 100% aqueous solutions. As ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Chemical communications
دوره 42 شماره
صفحات -
تاریخ انتشار 2005