TY  - JOUR
A1  - Ast, Sandra
A1  - Schwarze, Thomas
A1  - Müller, Holger
A1  - Sukhanov, Aleksey
A1  - Michaelis, Stefanie
A1  - Wegener, Joachim
A1  - Wolfbeis, Otto S.
A1  - Körzdörfer, Thomas
A1  - Dürkop, Axel
A1  - Holdt, Hans-Jürgen
T1  - A highly K+-Selective Phenylaza-[18]crown-6-Lariat-Ether-Based Fluoroionophore and its application in the sensing of K+ Ions with an optical sensor film and in cells
JF  - Chemistry - a European journal
N2  - Herein, we report the synthesis of two phenylaza-[18]crown-6 lariat ethers with a coumarin fluorophore (1 and 2) and we reveal that compound 1 is an excellent probe for K+ ions under simulated physiological conditions. The presence of a 2-methoxyethoxy lariat group at the ortho position of the anilino moiety is crucial to the substantially increased stability of compounds 1 and 2 over their lariat-free phenylaza-[18] crown-6 ether analogues. Probe 1 shows a high K+/Na+ selectivity and a 2.5-fold fluorescence enhancement was observed in the presence of 100 mm K+ ions. A fluorescent membrane sensor, which was prepared by incorporating probe 1 into a hydrogel, showed a fully reversible response, a response time of 150 s, and a signal change of 7.8% per 1 mm K+ within the range 1-10 mm K+. The membrane was easily fabricated (only a single sensing layer on a solid polyester support), yet no leaching was observed. Moreover, compound 1 rapidly permeated into cells, was cytocompatible, and was suitable for the fluorescent imaging of K+ ions on both the extracellular and intracellular levels.
KW  - crown compounds
KW  - fluorescence
KW  - gels
KW  - potassium
KW  - sensors
Y1  - 2013
U6  - https://doi.org/10.1002/chem.201302350
SN  - 0947-6539
SN  - 1521-3765
VL  - 19
IS  - 44
SP  - 14911
EP  - 14917
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Harth, Helene
A1  - Haßler, Gerda
A1  - Kosta, Peter
A1  - Krüger, Hans-Peter
A1  - Tristram, Hildegard L. C.
A1  - Wegener, Heide
A1  - Stehl, Thomas
T1  - Laudation zur Verleihung des Doktogrades ehrenhalber an Herrn Prof. em. Dr. phil. Helmut Lüdke
Y1  - 2008
SN  - 978-3- 8233-6362-0
ER  - 
TY  - JOUR
A1  - Weinhold, Till
A1  - Wegener, Michael
A1  - Künstler, Wolfgang
A1  - Seiß, Martin
A1  - Görne, Thomas
A1  - Gerhard, Reimund
T1  - Porous polytetrafluoroethylene (PTFE) single-film space-charge electrets with high piezoelectric coefficients
Y1  - 2000
SN  - 0537-9989
ER  - 
TY  - JOUR
A1  - Bergweiler, Steffen
A1  - Bergner, André
A1  - Görne, Thomas
A1  - Wegener, Michael
A1  - Gerhard, Reimund
T1  - Breathing modes and sound radiation of metallic organ pipes
Y1  - 2003
ER  - 
TY  - THES
A1  - Wegener, Thomas
T1  - Das Image der Päpste
BT  - Pius XII., Johannes XXIII. und Paul VI. in bundesdeutschen Printmedien
N2  - Wie jede öffentlichkeitssuchende Institution oder Person legen auch die katholische Kirche und ihre Päpste großen Wert auf das eigene Image. Dabei weicht die intendierte Selbstdarstellung oftmals von der medialen Wahrnehmung ab oder steht ihr sogar diametral entgegen. Ganz gleich ob Pius XII. als „Hitlers Papst“, Johannes XXIII. als „Revoluzzer“ oder Paul VI. als „Antipillenpapst“ – es existieren eine Fülle von außen zugetragener printmedialer Papst-Images, deren Entstehung, Verlauf und Brüche es in diesem Buch mithilfe einer mediensemiotischen, textbasierten Methodik auszumachen und nachzuzeichnen gilt.
Y1  - 2022
SN  - 978-3-658-37275-0
SN  - 978-3-658-37276-7
U6  - https://doi.org/https://doi.org/10.1007/978-3-658-37276-7_1
PB  - Springer VS
CY  - Wiesbaden
ER  - 
TY  - JOUR
A1  - Gerhard, Reimund
A1  - Wegener, Michael
A1  - Künstler, Wolfgang
A1  - Wirges, Werner
A1  - Görne, Thomas
A1  - Urayama, D.
A1  - Neher, Dieter
T1  - Inverse piezoelectricity of porous PTFE films with bipolar space charge
Y1  - 2000
ER  -