scholarly journals A Highly Selective Fluorescent Chemosensor for Al3+ Based on 2,2':6',2''-Terpyridine with a Salicylal Schiff Base

2019 ◽  
Author(s):  
Hui Li ◽  
Jianzhi Wang ◽  
Qingyao Fu ◽  
Feng Wang ◽  
Luying He
Keyword(s):  
Electron Transfer ◽  
Schiff Base ◽  
Schiff Bases ◽  
1H Nmr ◽  
Photoinduced Electron Transfer ◽  
Association Constant ◽  
Fluorescent Chemosensor ◽  
Stoichiometric Model ◽  
Strong Binding

Two 2,2':6',2''-terpyridine-based Schiff bases (TPySSB and TPySB) have been synthesized. The TPySSB shows remarkable selective ‘off-on’ fluorescence for Al3+ by photoinduced electron transfer (PET) mechanism of sensing. Chemosensor TPySSB binds Al3+ in a 1:2 ratio with an association constant 6.8×105 (R2=0.98) and this 1:2 stoichiometric model is established on Job’s plot and 1H NMR. Compared TPySSB and TPySB, it is of great importance of the existence of salicylidene unit due to its strong binding abilities of both phenol and C=N structure to the Al3+.

Novel anthracene- and pyridine-containing Schiff base probe for selective “off–on” fluorescent determination of Cu2+ ions towards live cell application

2016 ◽  
Vol 40 (7) ◽  
pp. 6101-6108 ◽  
Author(s):  
Turibius Simon ◽  
Muthaiah Shellaiah ◽  
Venkatesan Srinivasadesikan ◽  
Ching-Chang Lin ◽  
Fu-Hsiang Ko ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Schiff Base ◽  
Photoinduced Electron Transfer ◽  
Transfer Mechanism ◽  
Live Cell ◽  
Live Cells ◽  
Electron Transfer Mechanism

A simple anthracene-based AP probe was synthesized to detect Cu2+ ions, via the photoinduced electron transfer mechanism, in live cells.

Design of a novel Schiff-base fluorescent sensor for Al3+: experimental and computational studies

2015 ◽  
Vol 7 (16) ◽  
pp. 6799-6803 ◽  
Author(s):  
Jing-Can Qin ◽  
Xiao-ying Cheng ◽  
Kai-chao Yu ◽  
Ran Fang ◽  
Ming-fang Wang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Schiff Base ◽  
Photoinduced Electron Transfer ◽  
Fluorescence Enhancement ◽  
Fluorescent Sensor ◽  
Binding Mode ◽  
Computational Studies

Upon the gradual addition of Al3+ to a solution of HL, the sensor showed a large fluorescence enhancement at 420 nm. The reason for this phenomenon is that the addition of Al3+ to the solution of HL results in the formation of a 1 : 1 stoichiometry of the binding mode of L–Al which inhibits photoinduced electron transfer (PET).

Acridine derivative as a “turn on” probe for selective detection of picric acid via PET deterrence

RSC Advances ◽  
2016 ◽  
Vol 6 (87) ◽  
pp. 84319-84325 ◽  
Author(s):  
Santosh Chemate ◽  
Yogesh Erande ◽  
Dhanraj Mohbiya ◽  
Nagaiyan Sekar
Keyword(s):  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
High Selectivity ◽  
Picric Acid ◽  
Nitroaromatic Compounds ◽  
Fluorescent Chemosensor ◽  
Selective Detection ◽  
Acridine Derivative ◽  
Turn On

A new acridine based photoinduced electron transfer based fluorescent chemosensor for the detection of nitroaromatic compounds is reported. The probe exhibited high selectivity and sensitivity for the detection of picric acid over trivial explosive in CH3OH.

DFT/TD-DFT calculations on the sensing mechanism of a dual response near-infrared fluorescent chemosensor for superoxide anion and hydrogen polysulfides: photoinduced electron transfer

RSC Advances ◽  
2016 ◽  
Vol 6 (106) ◽  
pp. 104735-104741 ◽  
Author(s):  
Xiao-Fei Sun ◽  
Zhi-Xiang Zhang ◽  
Wei Li ◽  
Fu-Quan Bai ◽  
Jian Wang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Fluorescence Quenching ◽  
Dft Calculations ◽  
Photoinduced Electron Transfer ◽  
Superoxide Anion ◽  
Near Infrared ◽  
Fluorescent Chemosensor ◽  
Sensing Mechanism ◽  
Dual Response ◽  
Td Dft

Fluorescence quenching by the PET process in HCy-FN.

Rational Design of High-Performance Donor–Linker–Acceptor Hybrids Using a Schiff Base for Enabling Photoinduced Electron Transfer

2019 ◽  
Vol 92 (2) ◽  
pp. 2019-2026 ◽  
Author(s):  
Hao-Hua Deng ◽  
Kai-Yuan Huang ◽  
Shao-Bin He ◽  
Li-Ping Xue ◽  
Hua-Ping Peng ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Schiff Base ◽  
Photoinduced Electron Transfer ◽  
High Performance ◽  
Rational Design

Impact and correlation of pKaand dnelectrons of some selected thiosemicarbazone Schiff base metal Co, Ni, Cu complexes: a study of electrochemical behavior, excitation and optical energies

2017 ◽  
Vol 41 (12) ◽  
pp. 4853-4861 ◽  
Author(s):  
M. S. El-Shahawi ◽  
W. Ahmad ◽  
G. I. Mohammed ◽  
Y. M. Moustafa ◽  
G. A. Al-Hazmi ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Optical Properties ◽  
Schiff Base ◽  
Metal Ions ◽  
Schiff Bases ◽  
Base Metal ◽  
Electrochemical Behavior ◽  
Coordination Mechanism ◽  
Potential Applications ◽  
Cu Complexes

The electron-transfer and coordination mechanism of thiosemicarbazone Schiff bases with metal ions (Co, Ni, Cu), correlation of the electrochemical and optical properties for their potential applications in various fields of chemistry and biochemistry are underexplored.

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