Macromol. Rapid Commun. 14/2011

Abstract

Frontispiece: A simple and facile detection and removal of mercury ion in aqueous solution can be performed using sensor ensemble comprising water‐soluble conjugated polymer and thymine. Upon interacting with mercury ion, fluorescence of the ensemble shows blue‐to‐red color change. Simultaneously, mercury ion can be removed from the solution by simple filtration resulted from efficient precipitation with the ensemble. Further details can be found in the article by N. Y. Kwon, D. Kim, J. H. Son, G. S. Jang, J. H. Lee, and T. S. Lee* .

Benzothiadiazole‐Containing Conjugated Polyelectrolytes for Biological Sensing and Imaging

“…Unlike large molecules, which can induce CPE aggregation directly through complexation, small molecules such as metal ions need a small mediator to enforce sufficient interaction with CPE to induce CPE aggregation. Lee and co‐workers reported an assay for mercury (II) (Hg 2+ ) detection using P7 and thymine (T) . Hg 2+ can interact with sulfur‐containing species of various chemical structures including the sulfur‐rich polymer P7 ; however, the interaction is not strong enough to induce P7 aggregation.…”

“…Schematic illustration of assay for Hg 2+ detection (a–c) and the assay for cysteine detection (a–d). a) P7 solution, b) P7 solution containing thymine, c) formation of P7 ‐Hg 2+ ‐T complex, d) dissociation of the P7 ‐Hg 2+ ‐T complex after addition of cysteine . a–c) Reproduced with permission .…”

“…a) P7 solution, b) P7 solution containing thymine, c) formation of P7 ‐Hg 2+ ‐T complex, d) dissociation of the P7 ‐Hg 2+ ‐T complex after addition of cysteine . a–c) Reproduced with permission . Copyright 2011, Wiley‐VCH.…”

Aggregation–Deaggregation-Triggered, Tunable Fluorescence of an Assay Ensemble Composed of Anionic Conjugated Polymer and Polypeptides by Enzymatic Catalysis of Trypsin

“…The features of tunable fluorescence emissions are mainly attributed to the intrinsic properties of the aggregation-induced exciton migration in conjugated polymer backbones. Typical applications of such emission color-tunable conjugated polymers include platforms for proteins, 47−49 heparin, 50,51 multicationic amines, 52 mercury ion, 53 cysteine, 54 and bacteria sensing. 55 Herein, we present an ensemble system as an assay for trypsin based on the aggregation of positively charged polypeptides such as polylysine and polyarginine and initially blue-emitting, negatively charged conjugated polymer, of which emission can be tuned blue-to-red upon aggregation.…”

Detection of Ethylenediamine Using a Fluorescent Probe in Solution and in a PMMA Matrix

“…Thus, fluorometric analysis requires highly sensitive and selective fluorescent probes. For these reasons, fluorescent probes demonstrate changes, such as enhancement or quenching of fluorescence, upon exposure to external stimuli [6][7][8][9][10][11][12][13][14][15][16].…”