Turn-on Phosphorescence by Metal Coordination to a Multivalent Terpyridine Ligand: A New Paradigm for Luminescent Sensors

2014 ◽  
Vol 136 (17) ◽  
pp. 6395-6400 ◽  
Author(s):  
Andrea Fermi ◽  
Giacomo Bergamini ◽  
Myriam Roy ◽  
Marc Gingras ◽  
Paola Ceroni
Keyword(s):  
Metal Coordination ◽  
New Paradigm ◽  
Turn On ◽  
Luminescent Sensors

Two Co(II)-based coordination polymers as multi-responsive luminescent sensors for detection of levofloxacin, benzaldehyde and Fe3+ ions in water media

CrystEngComm ◽  
2021 ◽  
Author(s):  
Ya Liu ◽  
Li Ren ◽  
Guang Hua Cui
Keyword(s):  
Benzoic Acid ◽  
Coordination Polymers ◽  
Metal Coordination ◽  
Luminescent Sensors ◽  
Water Media ◽  
Ternary Metal ◽  
Benzenetricarboxylic Acid ◽  
Metal Coordination Polymers

Two new ternary metal coordination polymers (CPs), [Co(OBA)(L1)0.5]n (1) and [Co(HBTC)(L2)]n (2) (H2OBA = 4,4′-oxybis(benzoic acid)), H3BTC = 1,3,5-benzenetricarboxylic acid, L1 = 1,3-bis(1-(pyridin-4-ylmethyl)-1H-benzimidazol-2-yl)propane, L2 =  1,4-bis(benzimidazol-1-yl)-2-butene) were synthesized under the...

Luminescent switch sensors for the detection of biomolecules based on metal–organic frameworks

The Analyst ◽  
2018 ◽  
Vol 143 (18) ◽  
pp. 4221-4229 ◽  
Author(s):  
Qi Zhang ◽  
Chen-Feng Wang ◽  
Yun-Kai Lv
Keyword(s):  
Metal Organic Frameworks ◽  
Turn On ◽  
Luminescent Sensors ◽  
Metal Organic ◽  
Detection Of Biomolecules

The applications of MOFs-based luminescent sensors for biomolecules sensing via a “turn on” or “turn off” response have been reviewed.

Sugar−Phosphole Oxide Conjugates as “Turn-on” Luminescent Sensors for Lectins

2008 ◽  
Vol 1 (2) ◽  
pp. 270-273 ◽  
Author(s):  
Takanobu Sanji ◽  
Kentaro Shiraishi ◽  
Masato Tanaka
Keyword(s):  
Turn On ◽  
Luminescent Sensors

Metal-coordination driven intramolecular twisting: a turn-on fluorescent-redox probe for Hg2+ ions through the interaction of ferrocene nonbonding orbitals and dibenzylidenehydrazine

2019 ◽  
Vol 48 (23) ◽  
pp. 8209-8220 ◽  
Author(s):  
Sushil Ranjan Bhatta ◽  
Bijan Mondal ◽  
Sudhir Lima ◽  
Arunabha Thakur
Keyword(s):  
Detection Limit ◽  
Blue Shift ◽  
Metal Coordination ◽  
Selective Detection ◽  
Redox Probe ◽  
Turn On ◽  
Low Detection Limit

A unique C2 symmetric azine bridged bi-ferrocenyl receptor has been designed and synthesized for the selective detection of Hg2+ ion with a low detection limit as 15 nM via turn on fluorescence with a blue shift.

Dual-responsive luminescent sensors based on two Cd-MOFs: rare enhancement toward acac and quenching toward Cr2O72−

CrystEngComm ◽  
2020 ◽  
Vol 22 (22) ◽  
pp. 3759-3767 ◽  
Author(s):  
Yu'e Yu ◽  
Yuhao Wang ◽  
Haijun Xu ◽  
Jing Lu ◽  
Huaiwei Wang ◽  
...  
Keyword(s):  
Turn On ◽  
Luminescent Sensors ◽  
Dual Responsive ◽  
Luminescence Sensors

Two luminescent Cd-MOFs were employed as dual-responsive luminescence sensors to detect acac and Cr2O72− through turn-on and turn-off mechanisms.

AIE Luminogens as Versatile Bioprobes

2020 ◽  
Vol 16 ◽  
Author(s):  
Moustafa T. Gabr ◽  
F. Christopher Pigge
Keyword(s):  
Solid State ◽  
Optical Imaging ◽  
High Sensitivity ◽  
Cell Organelle ◽  
Background Signal ◽  
Turn On ◽  
Luminescent Sensors ◽  
Ion Sensing ◽  
Feature Aggregation ◽  
Stokes Shifts

Background: Luminogens that feature aggregation induced emission (AIE) are typically non-emissive in solution but become highly luminescent upon aggregation in poor solvents or solid state. Discussion: Unlike conventional fluorophores that exhibit aggregation-caused quenching (ACQ), utilization of AIE luminogens as bioprobes has featured superior photostability, low background signal, large Stokes’ shifts, high sensitivity and turn-on luminescent response. Conclusion: The versatility of AIE-based luminogens as bioprobes has been demonstrated through various applications in cell organelle imaging, ion sensing and sensitive detection of biomacromolecules. Examples of AIE-based luminogens and their applications as luminescent sensors for biosensing and optical imaging are discussed herein.

Solar Filaments as Tracers of Subsurface Processes

2000 ◽  
Vol 179 ◽  
pp. 177-183
Author(s):  
D. M. Rust
Keyword(s):  
Magnetic Fields ◽  
Magnetic Flux ◽  
Coronal Mass Ejections ◽  
Interplanetary Space ◽  
Intermediate Stage ◽  
Coronal Plasma ◽  
Magnetic Helicity ◽  
The Sun ◽  
New Paradigm ◽  
Solar Filaments

AbstractSolar filaments are discussed in terms of two contrasting paradigms. The standard paradigm is that filaments are formed by condensation of coronal plasma into magnetic fields that are twisted or dimpled as a consequence of motions of the fields’ sources in the photosphere. According to a new paradigm, filaments form in rising, twisted flux ropes and are a necessary intermediate stage in the transfer to interplanetary space of dynamo-generated magnetic flux. It is argued that the accumulation of magnetic helicity in filaments and their coronal surroundings leads to filament eruptions and coronal mass ejections. These ejections relieve the Sun of the flux generated by the dynamo and make way for the flux of the next cycle.

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