A Dual‐Stimuli‐Responsive Coordination Network Featuring Reversible Wide‐Range Luminescence‐Tuning Behavior

Yao, Zhao‐Quan; Xu, Jian; Zou, Bo; Hu, Zhenpeng; Wang, Kai; Yuan, Yi‐Jia; Chen, Yaping; Feng, Rui; Xiong, Jianbo; Hao, Jialei; Bu, Xian‐He

doi:10.1002/ange.201900190

Cited by 27 publications

(12 citation statements)

References 34 publications

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“… 50 N1 and N2 were synthesized from their corresponding precursors (see Scheme 1 b) by the Suzuki–Miyaura cross-coupling reaction with 4-pyridylboronic acid catalyzed by a heterogeneous Pd(PPh 3 ) 4 catalyst. 51 , 52 Subsequently, N1 and N2 were reacted with CH 3 I, followed by the above-mentioned ion-exchange reaction with K[ X ] (K: potassium), giving the products C1[ X ] and C2[ X ], respectively. Apart from C0–2[X], zwitterions (denoted as Z) Z1Bs and Z2Bs were also synthesized for comparison ( Scheme 1 c).…”

Section: Resultsmentioning

confidence: 99%

Counterion Migration Driven by Light-Induced Intramolecular Charge Transfer

Lin

Liu

et al. 2021

JACS Au

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A series of D−π– A + pyridinium compounds, in which D = −NPh 2 and A + = −PyMe + are linked by various amounts of linear phenyl spacers, were strategically designed and synthesized. Their characterization revealed the presence of excited-state intramolecular charge transfer (ESICT) that triggers a corresponding response from the counterion. In medium and strong polar solvents, the fast solvent relaxation occurring after ESICT overwhelms the counterion effect, showing typical emission solvatochromism. In weakly polar solvents, ESICT induces counteranion migration for electrostatic stabilization, the time scale of which is dependent on the radius of the counteranion, the length of the π-linker, and the viscosity of the solvent. In low-viscosity organic solvents such as toluene, counteranion migration occurs within several tens to hundreds of picoseconds, resulting in a time-dependent continuous emission that can be resolved from the spectral temporal evolution. Concrete evidence for this is provided by the chemical synthesis of a D−π– A + pyridinium–sulfur trioxide – zwitterion, where anion migration is restricted due to its internally locked ion pair. As a result, only a single emission band can be observed. These comprehensive studies prove that the ion migration process may be significant for a wide range of ESICT-type ionic fluorophores. Such an ionic movement, triggered by optically pumped ESICT of the D−π– A + dyad, is similar to the molecular machine driven by the redox reaction, but with a facile access and fast response.

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Section: Resultsmentioning

confidence: 99%

Counterion Migration Driven by Light-Induced Intramolecular Charge Transfer

Lin

Liu

et al. 2021

JACS Au

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“…[208] Additionally,networks with acoordinated triphenylamine fluorophore have been synthesized which gradually change their emission color depending on either temperature (from cyan to green) or pressure (green to red) in areversible manner. [209] Such self-reporting multi-stimuli-responsive properties hold key potential for the development of innovative smart materials which are exposed to several stimuli at the same time,for example,outdoor materials or materials operational in extreme environments.M aterials often need to defy different stimuli simultaneously,f or example,t emperature and light (winter/summer,h eating/air conditioning,n atural/ artificial light, day/night,), chemicals (pollution, cleaning agents,a erosols), mechanical forces (wind, earth quakes, thunder), and weather conditions (rainy,d ry,h umid, foggy). Therefore,t he ability to report any damages or changes evoked by an interaction of several stimuli in avisible manner would help to increase the lifetime and safety of the materials.…”

Section: Angewandte Chemiementioning

confidence: 99%

Prevent or Cure—The Unprecedented Need for Self‐Reporting Materials

2021

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Hatice Mutlu, born in Bulgaria, studied Chemistry at Marmara University and Bogazici University.S ubsequently, she obtained her PhD from the Karlsruhe Institute of Technology (KIT) in the group of M. A. R. Meier.After post-doctoral stays in the groups of J.-F. Lutz (ICS-CNRS, Strasbourg) and C. Barner-Kowollik (KIT), she currently works as asenior researcher at KIT.Her research interest spans from the synthesis of complex macromolecular architecturesand functional polymers to the development of new polymer-forming reactions and novel conjugation chemistries with aparticularfocus on the design of novel sulfur-based and self-reporting materials. Christopher Barner-Kowollik, Australian Research Council (ARC) Laureate Fellow, graduated in chemistry from Gçttingen University,G ermany,and joined the University of New South Wales in early 2000 rising to lead the Centre for Advanced Macromolecular Design in 2006 as one of its directors. He returned to Germany to the KIT in 2008, where he establishedand led aDFG-funded Centre of Excellence in soft matter synthesis. He moved to QUT in 2017 and established QUT'sSoft Matter Materials Laboratory. His research achievements have been recognized by an array of national and international awards.

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“…[208] Zusätzlich wurden Netzwerke mit einem koordinierten Tr iphenylamin-Fluorophor hergestellt, die ihre Emissionsfarbe allmählich entweder durch Te mperatur (von Cyan zu Grün) oder Druck (Grünz uR ot) auf reversible Weise ändern. [209] Solche selbstberichtenden multistimuliresponsiven Eigenschaften bergen eindeutig ein Schlüsselpotenzial fürd ie Entwicklung innovativer intelligenter Materialien, die gleichzeitig mehreren Stimuli ausgesetzt sind, z. B. Materialien fürden Außenbereich oder Materialien, die in extremen Umgebungen eingesetzt werden.…”

Section: Angewandte Chemieunclassified

Vorbeugen oder Heilen – die beispiellose Notwendigkeit von selbstberichtenden Materialien

2021

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Hatice Mutlu, geboren in Bulgarien, studierte Chemie an der Marmara Universitätu nd der Bogazici Universität. Anschließend promovierte sie am KIT in der Gruppe von M. A. R. Meier.Nach Postdoc-Aufenthalten in den Gruppen von J.-F. Lutz (ICS-CNRS, Straßburg) und C. Barner-Kowollik (KIT) arbeitet sie derzeit als leitende Wissenschaftlerin am KIT.I hr Forschungsinteresse reicht von der Synthese komplexer makromolekularer Architekturen und funktioneller Polymere bis hin zur Entwicklung neuer polymerbildender Reaktionen und neuartiger Konjugationschemien mit besonderem Schwerpunkta uf dem Design neuartiger schwefelbasierter und selbstberichtender Materialien. Christopher Barner-Kowollik schloss sein Chemistudium an der UniversitätG çttingen ab. Anfang 2000 ging er an die Universität New South Wales und übernahmdort 2006 als einer der Direktoren die Leitung des Centre for Advanced Macromolecular Design. 2008 kehrte er nach Deutschland an das KIT zurück, wo er einen DFG-gefçrderten SFB zu Synthese und Struktur weicher Materie aufbaute und leitete. 2017 wechselte er zur QUT und baute das QUT-Laborf ür weiche Materialwissenschaften auf. Seine Forschungsleistungen wurden durch eine Reihe von nationalen und internationalen Preisen anerkannt.

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A Dual‐Stimuli‐Responsive Coordination Network Featuring Reversible Wide‐Range Luminescence‐Tuning Behavior

Cited by 27 publications

References 34 publications

Counterion Migration Driven by Light-Induced Intramolecular Charge Transfer

Counterion Migration Driven by Light-Induced Intramolecular Charge Transfer

Prevent or Cure—The Unprecedented Need for Self‐Reporting Materials

Vorbeugen oder Heilen – die beispiellose Notwendigkeit von selbstberichtenden Materialien

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