A poly(carbazole‐alt‐fluorene) π‐conjugated polymer bearing thiophenyl benzimidazole: synthesis, characterization and fluorescence recognition of metal ions and cysteine

2021 ◽  
Author(s):  
Kuan Liu ◽  
Yuhan Wei ◽  
Jinyao Xu ◽  
Lingfei Qiu ◽  
Shaping Hu ◽  
...  
Keyword(s):  
Metal Ions ◽  
Conjugated Polymer ◽  
Polymer Bearing

Development of Polydiacetylene-Embedded Microfibers Using 3-D Hydrodynamic Focusing Technique

2011 ◽  
Author(s):  
Imsung Yoo ◽  
Jeesoo Lee ◽  
Simon Song
Keyword(s):  
Optical Property ◽  
Metal Ions ◽  
Conjugated Polymer ◽  
Hydrodynamic Focusing ◽  
Sensor Material ◽  
Environmental Perturbations ◽  
Head Groups ◽  
Novel Method ◽  
Specific Metal

Polydiacetylene (PDA), conjugated polymer, is an attractive sensor material that has a unique optical property to transform its color from visible blue to fluorescent red upon environmental perturbations like heat, pH, specific metal ions, and etc. In this study, we propose a novel method to detect metal ions by using polydiacetylene (PDA)-embedded sensor microfibers fabricated with a 3-D hydrodynamic focusing technique using alginate and calcium solutions. Moreover, by changing the head groups of PDA, we successfully detected Al3+ and Zn2+ ions up to 1mM using PDA micro fibers.

Detection of Cadmium using Conjugated Polymer Modified Electrodes

2012 ◽  
Vol 1436 ◽  
Author(s):  
Timothy Ponrathnam ◽  
Seth Robertson ◽  
Junghwan Cho ◽  
Pradeep Kurup ◽  
Ramaswamy Nagarajan
Keyword(s):  
Metal Ions ◽  
Glassy Carbon ◽  
Conjugated Polymer ◽  
Anodic Stripping Voltammetry ◽  
Inductively Couple Plasma ◽  
Modified Electrodes ◽  
Stripping Voltammetry ◽  
Trace Detection ◽  
Polymer Modified Electrodes ◽  
Sampling Procedures

ABSTRACTThe detection of heavy metals in subsurface strata currently requires tedious sampling procedures followed by laboratory analysis using techniques such as atomic absorption spectroscopy (AAS) or inductively couple plasma atomic emission spectroscopy (ICP-AES). These techniques are extremely accurate and capable of detecting very low concentrations of metal ions. The main drawback of these techniques is that they are time consuming, expensive to perform and not portable. A portable sensor capable of detecting metals ion in solution is highly desirable. Anodic Stripping Voltammetry (ASV) can be utilized as a reliable method for the trace detection of metal ions in water. In order to improve the sensitivity of the electrochemical sensor, conjugated polymer films can be coated on the surface of the glassy carbon working electrodes. Stable films of poly (3,4 ethylenedioxythiophene) [PEDOT] and polythiophene copolymer [PTCPTA] were electrochemically synthesized on the surface of a glassy carbon electrode. These polymer modified electrodes were utilized for the detection of cadmium in water. The sensors are capable of detecting trace concentrations of cadmium approaching the maximum contamination limits imposed by the Environment Protection Agency (EPA).

Conjugated Polymers Containing Pendant Terpyridine Complexes as Photoactive Sensors

1997 ◽  
Vol 488 ◽  
Author(s):  
Biwang Jiang ◽  
Shailesh Sahay ◽  
Wayne E. Jones
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Conjugated Polymers ◽  
Conjugated Polymer ◽  
Polymer System ◽  
High Sensitivity ◽  
Transition Metal Ions ◽  
Ligand Charge Transfer ◽  
Mlct State ◽  
Trapping Sites

AbstractWe have synthesized a novel conjugated polymer containing terpyridine receptors. This conjugated, polymer-based fluorescent chemosensory system exhibits unusually high sensitivity toward transition metal ions (∼-10−9 M). The fluorescence quenching response of the terpyridine containing conjugated polymer to transition metal ions is related to a facile energy migration in which energy from absorption of a photon, can migrate through the conjugated polymer system and be quenched by trapping sites. Terpyridine receptors can readily bind to transition metal ions and create a low lying Metal to Ligand Charge Transfer (MLCT) state which can act as an excitation trap.

Synthesis and Characterization of a New Conjugated Polymer Bearing Pyrazole and Thiophene Moieties as Potent NLO Material

2011 ◽  
Author(s):  
K. A. Vishnumurthy ◽  
A. Vasudeva Adhikari ◽  
M. S. Sunitha ◽  
Reji Philip ◽  
P. Predeep ◽  
...  
Keyword(s):  
Conjugated Polymer ◽  
Synthesis And Characterization ◽  
Polymer Bearing

scholarly journals A fishing rod-like conjugated polymer bearing pillar[5]arenes

2016 ◽  
Vol 52 (40) ◽  
pp. 6662-6664 ◽  
Author(s):  
Yingjie Ma ◽  
Long Chen ◽  
Chen Li ◽  
Klaus Müllen
Keyword(s):  
Conjugated Polymer ◽  
Polymer Bearing

A novel diethynyl functionalized pillar[5]arene, that is a pentabenzenacyclodecaphane derivative, has been synthesized and polymerized with p-dihalobenzene to form a fishing rod-like conjugated polymer, where one of the benzenes in the pillar[5]arene rings is incorporated into a poly(arylene ethynylene) backbone.

New polymer bearing hydroxamic acid chelating resin for binding of heavy metal ions

2001 ◽  
Vol 2001 (10) ◽  
pp. 450-451 ◽  
Author(s):  
M. R. Lutfor ◽  
S. Silong ◽  
W. M. Z. W. Yunus ◽  
M. Z. A. Rahman ◽  
M. Ahmad ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Hydroxamic Acid ◽  
Heavy Metal Ions ◽  
Chelating Resin ◽  
Polymer Bearing

Metal ions binding by chelating ligands from new polymer bearing amidoxime functional groups

2000 ◽  
Vol 2000 (12) ◽  
pp. 552-553
Author(s):  
M. R. Lutfor ◽  
S. Silong ◽  
W.M.Z. Wan Yunus ◽  
M.Z.A. Rahman ◽  
M.B. Ahmad ◽  
...  
Keyword(s):  
Metal Ions ◽  
Functional Groups ◽  
Chelating Ligands ◽  
Polymer Bearing

Detection of heavy metal ions using a water-soluble conjugated polymer based on thiophene andmeso-2,3-dimercaptosuccinic acid

2012 ◽  
Vol 62 (5) ◽  
pp. 811-816 ◽  
Author(s):  
Marco Laurenti ◽  
Francisco García Blanco ◽  
Enrique Lopez-Cabarcos ◽  
Jorge Rubio-Retama
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Conjugated Polymer ◽  
Heavy Metal Ions ◽  
Dimercaptosuccinic Acid ◽  
Water Soluble
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