A conformationally switchable fluorescent oligophenol foldamer for selective sensing of copper(ii) ions

RSC Advances ◽  
2014 ◽  
Vol 4 (97) ◽  
pp. 54469-54473 ◽  
Author(s):  
Jiaqiang Liu ◽  
Chang Sun ◽  
Wenliang Ma ◽  
Yu-Jing Lu ◽  
Lin Yu ◽  
...  
Keyword(s):  
Fluorescence Quenching ◽  
Metal Ion ◽  
Stimuli Responsive

A stimuli-responsive hexameric oligophenol host undergoes amine-induced co-operative folding and fluorescence quenching, enabling easy classification of the bound metal ion guests as well as selective sensing of Cu2+ ions.

scholarly journals Recent Advances in Stimuli-Responsive Photofunctional Materials Based on Accommodation of Chromophore into Layered Double Hydroxide Nanogallery

2013 ◽  
Vol 2013 ◽  
pp. 1-14 ◽  
Author(s):  
Wu Li ◽  
Dongpeng Yan ◽  
Rui Gao ◽  
Jun Lu ◽  
Min Wei ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Metal Ion ◽  
Recent Progress ◽  
Stimuli Responsive ◽  
Responsive Materials ◽  
Chemical Factors ◽  
Host Matrices ◽  
Double Hydroxide ◽  
Double Hydroxides ◽  
Further Development

The assembly of photofunctional molecules into host matrices has become an important strategy to achieve tunable fluorescence and to develop intelligent materials. The stimuli-responsive photofunctional materials based on chromophores-assembled layered double hydroxides (LDHs) have received much attention from both academic and industry fields as a result of their advantages, such as high photo/thermal stability, easy processing, and well reversibility, which can construct new types of smart luminescent nanomaterials (e.g., ultrathin film and nanocomposite) for sensor and switch applications. In this paper, external environmental stimuli have mainly involved physical (such as temperature, pressure, light, and electricity) and chemical factors (such as pH and metal ion); recent progress on the LDH-based organic-inorganic stimuli-responsive materials has been summarized. Moreover, perspectives on further development of these materials are also discussed.

Metal ion dependent fluorescence quenching in a crown ether bridged porphyrin–fullerene dyad

2006 ◽  
Vol 5 (12) ◽  
pp. 1150-1153 ◽  
Author(s):  
Kenneth P. Ghiggino ◽  
James A. Hutchison ◽  
D.-M. Shafiqul Islan ◽  
Yasuyuki Araki ◽  
Osamu Ito ◽  
...  
Keyword(s):  
Crown Ether ◽  
Fluorescence Quenching ◽  
Metal Ion

scholarly journals Bacterial Succinoglycans: Structure, Physical Properties, and Applications

Polymers ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 276
Author(s):  
Jae-pil Jeong ◽  
Yohan Kim ◽  
Yiluo Hu ◽  
Seunho Jung
Keyword(s):  
Drug Delivery ◽  
Physical Properties ◽  
Metal Ion ◽  
Structural Characteristics ◽  
Culture Conditions ◽  
Medium Composition ◽  
Stimuli Responsive ◽  
Food Industries ◽  
Acetyl Group ◽  
Functional Biomaterials

Succinoglycan is a type of bacterial anionic exopolysaccharide produced from Rhizobium, Agrobacterium, and other soil bacteria. The exact structure of succinoglycan depends in part on the type of bacterial strain, and the final production yield also depends on the medium composition, culture conditions, and genotype of each strain. Various bacterial polysaccharides, such as cellulose, xanthan, gellan, and pullulan, that can be mass-produced for biotechnology are being actively studied. However, in the case of succinoglycan, a bacterial polysaccharide, relatively few reports on production strains or chemical and structural characteristics have been published. Physical properties of succinoglycan, a non-Newtonian and shear thinning fluid, have been reported according to the ratio of substituents (pyruvyl, succinyl, acetyl group), molecular weight (Mw), and measurement conditions (concentration, temperature, pH, metal ion, etc.). Due to its unique rheological properties, succinoglycan has been mainly used as a thickener and emulsifier in the cosmetic and food industries. However, in recent reports, succinoglycan and its derivatives have been used as functional biomaterials, e.g., in stimuli-responsive drug delivery systems, therapeutics, and cell culture scaffolds. This suggests a new and expanded application of succinoglycan as promising biomaterials in biomedical fields, such as tissue engineering, regenerative medicine, and pharmaceuticals using drug delivery.

A metal ion-regulated colorimetric sensor array: discriminating Chinese Baijiu from other beverages

2019 ◽  
Vol 11 (41) ◽  
pp. 5274-5281 ◽  
Author(s):  
Jiawei Li ◽  
Ping Yang ◽  
Jing Zhang ◽  
Zhengfan Shui ◽  
Danqun Huo ◽  
...  
Keyword(s):  
Metal Ions ◽  
Metal Ion ◽  
Sensor Array ◽  
Colorimetric Sensor ◽  
Correct Classification ◽  
Au Nps ◽  
Colorimetric Sensor Array

We provide a Baijiu colorimetric sensor array based on metal ions regulated Au NPs aggregation, which can do a correct classification of 16 Baijius with different flavor types.

scholarly journals Stimuli-responsive nucleic acid-functionalized metal–organic framework nanoparticles using pH- and metal-ion-dependent DNAzymes as locks

2017 ◽  
Vol 8 (8) ◽  
pp. 5769-5780 ◽  
Author(s):  
Wei-Hai Chen ◽  
Xu Yu ◽  
Alessandro Cecconello ◽  
Yang Sung Sohn ◽  
Rachel Nechushtai ◽  
...  
Keyword(s):  
Nucleic Acid ◽  
Metal Ion ◽  
Metal Organic Framework ◽  
Stimuli Responsive ◽  
Metal Organic ◽  
Organic Framework

Drug-loaded DNA-capped metal–organic framework nanoparticles are unlocked by pH or Mg2+ ions/ATP triggers, resulting in the release of the loads.

Computational Insights into Processes Underlying the Amine-Induced Fluorescence Quenching of a Stimuli-Responsive Phenol-Based Hexameric Foldamer Host

2014 ◽  
Vol 79 (7) ◽  
pp. 2963-2973 ◽  
Author(s):  
Chang Sun ◽  
Ying Liu ◽  
Jiaqiang Liu ◽  
Yu-Jing Lu ◽  
Lin Yu ◽  
...  
Keyword(s):  
Fluorescence Quenching ◽  
Stimuli Responsive

A supramolecular polymer network gel with stimuli-responsiveness constructed by orthogonal metal ion coordination and pillar[5]arene-based host–guest recognition

2017 ◽  
Vol 8 (25) ◽  
pp. 3783-3787 ◽  
Author(s):  
Yuezhou Liu ◽  
Liqing Shangguan ◽  
Hu Wang ◽  
Danyu Xia ◽  
Bingbing Shi
Keyword(s):  
Metal Ion ◽  
Polymer Network ◽  
Supramolecular Polymer ◽  
Stimuli Responsive ◽  
External Stimuli

A novel external stimuli-responsive supramolecular polymer network gel was fabricated by orthogonal Ag-coordination and pillar[5]arene-based host–guest interactions.

scholarly journals Multivariate analysis for the classification of copper–lead and copper–zinc glasses

2020 ◽  
Vol 18 (1) ◽  
pp. 1080-1085
Author(s):  
Dimitar Dimitrov ◽  
Miroslava Nedyalkova ◽  
Sergio Madurga ◽  
Ludmila Naneva ◽  
Vasil Simeonov
Keyword(s):  
Multivariate Analysis ◽  
Physicochemical Properties ◽  
Metal Ion ◽  
Zinc Borate ◽  
Borate Glasses ◽  
Multivariate Statistical ◽  
Zn Doping ◽  
Copper Zinc ◽  
Copper Lead

AbstractThe similarity patterns in the physicochemical properties of copper–lead and copper–zinc borate glasses were identified by means of finding similarity within the objects of study using multivariate statistical analysis. As exploratory methods of multivariate analysis, cluster analysis, principal components analysis, and two-way clustering were applied for a set of copper–lead and copper–zinc borate glasses. Specific correlations among the physicochemical properties of copper glasses were interpreted. In particular, the effect of Pb and Zn doping metal ion in copper glasses in the structural and mechanical properties is identified. Interestingly, the degree of lead content determines two kinds of glasses with specific physicochemical properties.

scholarly journals Copper Ion Detection Method Based on a Quantum Dot Fluorescent Probe

2021 ◽  
Author(s):  
Pu YANG ◽  
Feng DONG ◽  
Yaguang YU ◽  
Jiahui SHI ◽  
Ming SUN
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Fluorescence Quenching ◽  
Linear Relationship ◽  
Fluorescent Probe ◽  
Metal Ion ◽  
Copper Ion ◽  
Quantitative Detection ◽  
Correction Coefficient ◽  
Modeling And Analysis

The heavy metal ion Cu2+ was used as the research object in this study. Cu2+ was detected using a cysteine- and glutathione-modified cadmium telluride quantum dot solution. Compounds of Cu2+ and modified quantum dots on the surface caused the fluorescence quenching of quantum dots. A linear relationship existed between the concentration and the intensity of the change in fluorescence quenching. Using this linear relationship, the quantitative detection of the Cu2+ content in the solution by quantum dots was achieved; the detection band was 476-800 nm. Under optimized conditions, the detection limit of the method was 3.58×10-5 mol/L (S/N=3, n=11), and the linear range was 3×10-7 to 8×10-4 mol/L. In a certain experimental environment, standard normal variate preprocessing of the characteristic band and partial least squares modeling and analysis yielded good self-prediction and actual prediction abilities. The correction coefficient was 0.9006. The RMSEC was 8.83084 µmol/L, the determination coefficient of the validation set was 0.8686, and the RMSEP was 5.4320 µmol/L. The results showed that the modeling effect was good in the experiment, the operation was simple and convenient, and the experiment was fast, reliable, and nonpolluting, indicating that the method of detecting Cu2+ using a quantum dot fluorescent probe was feasible.

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