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).

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.

A novel turn-on Schiff-base fluorescent sensor for aluminum(iii) ions in living cells

RSC Advances ◽  
2015 ◽  
Vol 5 (129) ◽  
pp. 107012-107019 ◽  
Author(s):  
Jianfei Tian ◽  
Xiaxia Yan ◽  
Hui Yang ◽  
Fuli Tian
Keyword(s):  
Schiff Base ◽  
Metal Ions ◽  
High Selectivity ◽  
Fluorescence Enhancement ◽  
Fluorescent Sensor ◽  
Living Cells ◽  
Excitation Wavelength ◽  
Turn On

Quinoline Schiff base L exhibits a more than 38-fold fluorescence enhancement after addition of Al3+ ions at an excitation wavelength of 373 nm, and shows a high selectivity for Al3+ over other metal ions.

Spectrophotometric study of the selective binding behavior of aliphatic oligopeptides by bridged bis(β-cyclodextrin) linked by a 4,4′-diaminodiphenyl disulfide tether

2010 ◽  
Vol 88 (12) ◽  
pp. 1205-1212 ◽  
Author(s):  
Yang Yong-Cun ◽  
Chi Shao-Ming ◽  
Liu Ming-Hua ◽  
Huang Rong ◽  
Wang Yu-Fei ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Fluorescence Enhancement ◽  
Fluorescent Sensor ◽  
Binding Constants ◽  
2D Nmr ◽  
Binding Mode ◽  
Spectrophotometric Study ◽  
2D Nmr Spectroscopy ◽  
Binding Behavior ◽  
Guest Binding

The conformation and binding behavior of 4,4′-diaminodiphenyl disulfide bridged bis(β-cyclodextrin) (1) towards representative aliphatic oligopeptides, i.e., Leu-Gly, Gly-Leu, Glu-Glu, Met-Met, Gly-Gly, Gly-Gly-Gly, and Gly-Pro, were investigated by circular dichroism, fluorescence, and 1H and 2D NMR spectroscopy at 25 °C in phosphate buffer (pH 7.20). The results indicated that 1 acts as an efficient fluorescent sensor and displays remarkable fluorescence enhancement upon addition of optically inert oligopeptides. Owing to the cooperative host–linker–guest binding mode in which the linker and guest are coincluded in the two cyclodextrin cavities, the bis(β-cyclodextrin) 1 gives high binding constants of up to 103–104 (mol/L)–1 for oligopeptides. The bis(β-cyclodextrin) 1 can recognize not only the size and shape of oligopeptides but also the hydrophobicity, giving an exciting residue selectivity of up to 61.3 for the Gly-Leu/Glu-Glu pair. These phenomena are discussed from the viewpoints of multiple recognition and induce-fit interactions between host and guest.

Interaction of a Schiff-base fluorescent sensor with Al3+: experimental and computational studies

2014 ◽  
Vol 67 (4) ◽  
pp. 737-744 ◽  
Author(s):  
Xiao-Ying Cheng ◽  
Ran Fang ◽  
Zheng-Yin Yang ◽  
Ming-Fang Wang ◽  
Qiao-Xia Zhou ◽  
...  
Keyword(s):  
Schiff Base ◽  
Fluorescent Sensor ◽  
Computational Studies

scholarly journals A BODIPY sensor for water based on a photo-induced electron transfer method with fluorescence enhancement and attenuation systems

2016 ◽  
Vol 40 (9) ◽  
pp. 7278-7281 ◽  
Author(s):  
Yousuke Ooyama ◽  
Marin Hato ◽  
Toshiaki Enoki ◽  
Satoshi Aoyama ◽  
Kensuke Furue ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Fluorescence Enhancement ◽  
Fluorescent Sensor ◽  
Water Based ◽  
Photo Induced Electron Transfer ◽  
Transfer Method

BODIPYMH-1can act as a fluorescent sensor for trace amounts of water based on the PET (photo-induced electron transfer) method with both fluorescence enhancement and attenuation systems.

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+.

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
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