Krick, Marcel

[["dc.bibliographiccitation.firstpage","8279"],["dc.bibliographiccitation.issue","26"],["dc.bibliographiccitation.journal","Journal of the American Chemical Society"],["dc.bibliographiccitation.lastpage","8287"],["dc.bibliographiccitation.volume","138"],["dc.contributor.author","Frank, Marina"],["dc.contributor.author","Ahrens, Jennifer"],["dc.contributor.author","Bejenke, Isabel"],["dc.contributor.author","Krick, Marcel"],["dc.contributor.author","Schwarzer, Dirk"],["dc.contributor.author","Clever, Guido H."],["dc.date.accessioned","2018-11-07T10:11:43Z"],["dc.date.available","2018-11-07T10:11:43Z"],["dc.date.issued","2016"],["dc.description.abstract","Photon-powered charge separation is achieved in a supramolecular architecture based on the dense packing of functional building blocks. Therefore, self-assembled dimers of interpenetrated coordination cages consisting of redoxactive chromophors were synthesized in a single assembly step starting from easily accessible ligands and Pd(II) cations. Two backbones consisting of electron rich phenothiazine (PTZ) and electron deficient anthraquinone (ANQ) were used to assemble either homo-octameric or mixed-ligand double cages. The electrochemical and spectroscopic properties of the pure cages, mixtures of donor and acceptor cages and the mixed-ligand cages were compared by steady-state UV-vis and transient absorption spectroscopy, supported by cyclic voltammetry and spectroelectrochemistry. Only the mixed-ligand cages, allowing close intra-assembly communication between the donors and acceptors, showed the characteristic PTZ radical cation and ANQ radical anion features upon excitation in the transient spectra. In contrast, excitation of the mixtures of the homo-octameric donor and acceptor cages in solution did not lead to any signs of electron transfer. Densely packed photo- and redox-functional self-assemblies promise molecular-level control over the morphology of the charge separation layer in future photovoltaic applications."],["dc.description.sponsorship","Evonik Foundation; FCI; DFG [SFB 1073, CL 489/2-1]"],["dc.identifier.doi","10.1021/jacs.6b04609"],["dc.identifier.isi","000379455600035"],["dc.identifier.pmid","27258549"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/40105"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area B: Umwandlung von optischen Schwingungen"],["dc.relation","SFB 1073 | Topical Area B | B05 Energy conversion processes underlying the light-powered reversible guest exchange of photochromic coordination cages"],["dc.relation.issn","0002-7863"],["dc.title","Light-Induced Charge Separation in Densely Packed Donor Acceptor Coordination Cages"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","10411"],["dc.bibliographiccitation.issue","68"],["dc.bibliographiccitation.journal","Chemical Communications"],["dc.bibliographiccitation.lastpage","10414"],["dc.bibliographiccitation.volume","52"],["dc.contributor.author","Krick, Marcel"],["dc.contributor.author","Holstein, Julian"],["dc.contributor.author","Wuertele, Christian"],["dc.contributor.author","Clever, Guido H."],["dc.date.accessioned","2018-11-07T10:20:07Z"],["dc.date.available","2018-11-07T10:20:07Z"],["dc.date.issued","2016"],["dc.description.abstract","A series of [Pd2L4] coordination cages featuring endohedral functionalities in central backbone positions was synthesized. Although attached via C=C double bonds, the substituents behave as molecular rotors. This is explained by their pronounced donor-acceptor character which lowers rotational barriers and allows for electronic control over the spinning rates inside the cage. The dynamic behaviour of the free ligands, assembled cages and host-guest complexes is compared with the aid of NMR experiments, X-ray structure analysis and molecular modelling."],["dc.description.sponsorship","DFG [CL 489/2-1, SPP 1807, IRTG 1422]"],["dc.identifier.doi","10.1039/c6cc04155h"],["dc.identifier.isi","000382119600021"],["dc.identifier.pmid","27484435"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/13745"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/41811"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Royal Soc Chemistry"],["dc.relation.issn","1364-548X"],["dc.relation.issn","1359-7345"],["dc.rights.access","openAccess"],["dc.title","Endohedral dynamics of push-pull rotor-functionalized cages"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","29724"],["dc.bibliographiccitation.issue","56"],["dc.bibliographiccitation.journal","RSC Advances"],["dc.bibliographiccitation.lastpage","29728"],["dc.bibliographiccitation.volume","4"],["dc.contributor.author","Schulte, Thorben R."],["dc.contributor.author","Krick, Marcel"],["dc.contributor.author","Asche, Carmen I."],["dc.contributor.author","Freye, Sabrina"],["dc.contributor.author","Clever, Guido H."],["dc.date.accessioned","2018-11-07T09:45:58Z"],["dc.date.available","2018-11-07T09:45:58Z"],["dc.date.issued","2014"],["dc.description.abstract","In order to gain a better understanding of the formation of interpenetrated double-cages [Pd4L8] from banana-shaped ligands and square-planar metal cations, our previously reported dibenzosuberone-based ligand was synthetically modified. We show that the formation of double-cages tolerates a wide range of suberone backbone modifications, as long as the ketone functionality is preserved. Reduction of this group to a CH2-bridge allowed us to form a monomeric [Pd2L4] cage, instead. PM6 and DFT calculations were performed to study the role of the carbonyl group in the formation of double-cages yielding results that are in good agreement with the experiments."],["dc.description.sponsorship","Fonds der Chemischen Industrie; DFG [CL 489/2-1]"],["dc.identifier.doi","10.1039/c4ra04679j"],["dc.identifier.isi","000339669800043"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/34759"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Royal Soc Chemistry"],["dc.relation.issn","2046-2069"],["dc.title","Subtle backbone modifications control the interpenetration of dibenzosuberone-based coordination cages"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","S719"],["dc.bibliographiccitation.journal","JBIC Journal of Biological Inorganic Chemistry"],["dc.bibliographiccitation.lastpage","S720"],["dc.bibliographiccitation.volume","19"],["dc.contributor.author","Clever, Guido H."],["dc.contributor.author","Engelhard, David M."],["dc.contributor.author","Krick, Marcel"],["dc.contributor.author","Pereira, Fernanda"],["dc.date.accessioned","2018-11-07T09:37:15Z"],["dc.date.available","2018-11-07T09:37:15Z"],["dc.date.issued","2014"],["dc.identifier.isi","000339874700040"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/32797"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.publisher.place","New york"],["dc.relation.conference","12th European Biological Inorganic Chemistry Conference (EuroBIC)"],["dc.relation.eventlocation","Zurich, SWITZERLAND"],["dc.relation.issn","1432-1327"],["dc.relation.issn","0949-8257"],["dc.title","Metal-mediated quadruplexes with and without DNA"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2877"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Journal of biological chemistry"],["dc.bibliographiccitation.lastpage","2886"],["dc.bibliographiccitation.volume","287"],["dc.contributor.author","Carnarius, Christian"],["dc.contributor.author","Kreir, Mohamed"],["dc.contributor.author","Krick, Marcel"],["dc.contributor.author","Methfessel, Christoph"],["dc.contributor.author","Moehrle, Volker"],["dc.contributor.author","Valerius, Oliver"],["dc.contributor.author","Brüggemann, Andrea"],["dc.contributor.author","Steinem, Claudia"],["dc.contributor.author","Fertig, Niels"],["dc.date.accessioned","2017-09-07T11:49:01Z"],["dc.date.available","2017-09-07T11:49:01Z"],["dc.date.issued","2012"],["dc.description.abstract","In mammalian tissues, connexin 43 (Cx43) is the most prominent member of the connexin family. In a single lipid bilayer, six connexin subunits assemble into a hemichannel (connexon). Direct communication of apposing cells is realized by two adjacent hemichannels, which can form gap junction channels. Here, we established an expression system in Pichia pastoris to recombinantly produce and purify Cx43 as well as Cx43 fused to green fluorescent protein (GFP). Proteins were isolated from crude cell membrane fractions via affinity chromatography. Cx43 and Cx43-GFP hemichannels were reconstituted in giant unilamellar vesicles as proven by fluorescence microscopy, and their electrophysiological behavior was analyzed on the single channel level by planar patch clamping. Cx43 and Cx43-GFP both showed an ohmic behavior and a voltage-dependent open probability. Cx43 hemichannels exhibited one major mean conductance of 224 +/- 26 picosiemens (pS). In addition, a subconductance state at 124 +/- 5 pS was identified. In contrast, the analysis of Cx43-GFP single channels revealed 10 distinct conductance states in the range of 15 to 250 pS, with a larger open probability at 0 mV as compared with Cx43, which suggests that intermolecular interactions between the GFP molecules alter the electrophysiology of the protein."],["dc.identifier.doi","10.1074/jbc.M111.319871"],["dc.identifier.gro","3142586"],["dc.identifier.isi","000300292300059"],["dc.identifier.pmid","22139870"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/8953"],["dc.language.iso","en"],["dc.notes.intern","WoS Import 2017-03-10"],["dc.notes.status","final"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation.issn","0021-9258"],["dc.title","Green Fluorescent Protein Changes the Conductance of Connexin 43 (Cx43) Hemichannels Reconstituted in Planar Lipid Bilayers"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","5141"],["dc.bibliographiccitation.issue","34"],["dc.bibliographiccitation.journal","European Journal of Organic Chemistry"],["dc.bibliographiccitation.lastpage","5146"],["dc.bibliographiccitation.volume","2017"],["dc.contributor.author","Krick, Marcel"],["dc.contributor.author","Holstein, Julian Jacob"],["dc.contributor.author","Wuttke, Axel"],["dc.contributor.author","Mata, Ricardo A."],["dc.contributor.author","Clever, Guido H."],["dc.date.accessioned","2020-05-12T13:18:44Z"],["dc.date.available","2020-05-12T13:18:44Z"],["dc.date.issued","2017"],["dc.description.abstract","A series of asymmetrically substituted acridinylidene cyanoacetic esters was synthesized and analyzed for dynamic behavior and spectroscopic features. Although formally connected by a C=C double bond, the cyanoacetic ester groups behave as molecular rotors due to the electronic push–pull situation in the system. The donor–acceptor character lowers the rotational barrier and allows controlling the rotational rate by adjusting the electronic contribution of the ester substituent and changing the solvent polarity. Besides rotation, a much faster flipping motion can be assigned to the tricyclic acridinylidene motif, both of which lead to a rapid interconversion between axially chiral conformers of the system. Treatment with acid induces an intense fluorescence of the system, due to protonation of the C=C carbon on the rotor site, concomitant with the formation of a fluorescent acridinium ion. The dynamic, fluorogenic, and electrochemical behavior of three systems is compared with the aid of NMR, UV/Vis and fluorescence measurements, X‐ray structural analysis, cyclic voltammetry, and molecular modelling."],["dc.identifier.doi","10.1002/ejoc.201700873"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/65249"],["dc.language.iso","en"],["dc.relation.issn","1434-193X"],["dc.title","Temperature-Dependent Dynamics of Push-Pull Rotor Systems Based on Acridinylidene Cyanoacetic Esters"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]