Synthesis, Evaluation, and Computational Studies of Naphthalimide-Based Long-Wavelength Fluorescent Boronic Acid Reporters

2008 ◽  
Vol 14 (9) ◽  
pp. 2795-2804 ◽  
Author(s):  
Shan Jin ◽  
Junfeng Wang ◽  
Minyong Li ◽  
Binghe Wang
Keyword(s):  
Boronic Acid ◽  
Computational Studies ◽  
Long Wavelength

scholarly journals A Long-Wavelength Fluorescent Squarylium Cyanine Dye Possessing Boronic Acid for Sensing Monosaccharides and Glycoproteins with High Enhancement in Aqueous Solution

Sensors ◽  
2012 ◽  
Vol 12 (5) ◽  
pp. 5420-5431 ◽  
Author(s):  
Shingo Saito ◽  
Tara L. Massie ◽  
Takeshi Maeda ◽  
Hiroyuki Nakazumi ◽  
Christa L. Colyer
Keyword(s):  
Aqueous Solution ◽  
Boronic Acid ◽  
Cyanine Dye ◽  
Long Wavelength

Design and Synthesis of Long-Wavelength Fluorescent Boronic Acid Reporter Compounds

2007 ◽  
Vol 2007 (13) ◽  
pp. 2091-2099 ◽  
Author(s):  
Junfeng Wang ◽  
Shan Jin ◽  
Senol Akay ◽  
Binghe Wang
Keyword(s):  
Boronic Acid ◽  
Long Wavelength ◽  
Design And Synthesis

A Long-Wavelength Fluorescent Probe for Saccharides Based on Boronic-Acid Receptor

2013 ◽  
Vol 31 (8) ◽  
pp. 1095-1101 ◽  
Author(s):  
Hongyan Bai ◽  
Qian Sun ◽  
Haiyu Tian ◽  
Junhong Qian ◽  
Lingyi Zhang ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Boronic Acid ◽  
Acid Receptor ◽  
Long Wavelength

2-(4-Boronophenyl)quinoline-4-carboxylic acid derivatives: Design and synthesis, aggregation-induced emission characteristics, and binding activity studies for D-ribose with long-wavelength emission

2019 ◽  
Vol 44 (3-4) ◽  
pp. 152-160
Author(s):  
Guiqian Fang ◽  
Hao Wang ◽  
Zhancun Bian ◽  
Guimin Zhang ◽  
Min Guo ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Boronic Acid ◽  
Clinical Laboratory ◽  
Fluorescence Emission ◽  
Fluorescent Sensors ◽  
Intensity Change ◽  
Buffer Solution ◽  
Aggregation Induced Emission ◽  
Long Wavelength ◽  
Phenyl Boronic Acid

Long-wavelength fluorescent sensors with large Stokes shifts show useful applications in chemical biology and clinical laboratory diagnosis. We have recently reported [4-(4-{[3-(4-boronobenzamido)propyl]carbamoyl}quinolin-2-yl)phenyl]boronic acid that can selectively recognize d-ribose in a buffer solution of pH 7.4. However, the short emission wavelength (395 nm) and aggregation-caused quenching effect are not conducive to applications as a sensor. Novel diboronic acid compounds are synthesized using 2-(4-boronophenyl)quinoline-4-carboxylic acid as the building block and p-phenylenediamine as the linker. These compounds show aggregation-induced emission and fluorescence emission at about 500 nm. In addition, after binding to most carbohydrates, the aggregated state of the boronic acid–containing compounds is dissociated, resulting in fluorescence quenching. Using [4-(4-{[4-(3-borono-5-methoxybenzamido)phenyl]carbamoyl}quinoline-2-yl)phenyl]boronic acid as an example, addition of 55 mM of d-ribose resulted in the strongest quenching of 83% for all the tested carbohydrates, indicating selectively recognizing d-ribose. The reciprocal of the fluorescence intensity change showed a good linear relationship with the reciprocal of d-ribose concentration ( R2 ⩾ 0.99), indicating sensor binding to d-ribose in a ratio of 1:1 to form an inclusion complex. The fluorescence emission is red-shifted compared to 2-(4-boronophenyl)quinoline-4-carboxylic acid and its common derivatives, which provides a new method for the development of long-wavelength fluorescent sensors.

Activated Prominences; Mechanisms for Activation and Eruption

1979 ◽  
Vol 44 ◽  
pp. 307-313
Author(s):  
D.S. Spicer
Keyword(s):  
Pressure Gradient ◽  
Density Gradient ◽  
Current Density ◽  
Convective Instability ◽  
Tearing Mode ◽  
Magnetic Shear ◽  
Long Wavelength ◽  
Ideal Mhd ◽  
Gradient Change ◽  
Accelerated Particles

A possible relationship between the hot prominence transition sheath, increased internal turbulent and/or helical motion prior to prominence eruption and the prominence eruption (“disparition brusque”) is discussed. The associated darkening of the filament or brightening of the prominence is interpreted as a change in the prominence’s internal pressure gradient which, if of the correct sign, can lead to short wavelength turbulent convection within the prominence. Associated with such a pressure gradient change may be the alteration of the current density gradient within the prominence. Such a change in the current density gradient may also be due to the relative motion of the neighbouring plages thereby increasing the magnetic shear within the prominence, i.e., steepening the current density gradient. Depending on the magnitude of the current density gradient, i.e., magnetic shear, disruption of the prominence can occur by either a long wavelength ideal MHD helical (“kink”) convective instability and/or a long wavelength resistive helical (“kink”) convective instability (tearing mode). The long wavelength ideal MHD helical instability will lead to helical rotation and thus unwinding due to diamagnetic effects and plasma ejections due to convection. The long wavelength resistive helical instability will lead to both unwinding and plasma ejections, but also to accelerated plasma flow, long wavelength magnetic field filamentation, accelerated particles and long wavelength heating internal to the prominence.

Modern optics of long-wavelength neutrons

1991 ◽  
Vol 161 (11) ◽  
pp. 95 ◽  
Author(s):  
A.I. Frank
Keyword(s):  
Long Wavelength

Computational Studies of Human Motion: Part 1, Tracking and Motion Synthesis

2005 ◽  
Author(s):  
David A. Forsyth ◽  
Okan Arikan ◽  
Leslie Ikemoto ◽  
James O'Brien ◽  
Deva Ramanan
Keyword(s):  
Human Motion ◽  
Computational Studies ◽  
Motion Synthesis
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