Li, Weixing

[["dc.bibliographiccitation.issue","47"],["dc.bibliographiccitation.journal","Physical Chemistry, Chemical Physics"],["dc.bibliographiccitation.volume","16"],["dc.contributor.author","Liu, Zhao"],["dc.contributor.author","Li, Weixing"],["dc.contributor.author","Plog, Andreas"],["dc.contributor.author","Xu, Yeping"],["dc.contributor.author","Buntkowsky, Gerd"],["dc.contributor.author","Gutmann, Torsten"],["dc.contributor.author","Zhang, Kai"],["dc.date.accessioned","2020-05-14T13:30:54Z"],["dc.date.available","2020-05-14T13:30:54Z"],["dc.date.issued","2014"],["dc.description.abstract","Multi-stimuli responsive materials based on cellulose nanocrystals (CNCs), especially using non-conventional stimuli including light, still need more explorations, to fulfill the requirements of complicated application environments. The structure determination of functional groups on the CNC surface constitutes a significant challenge, partially due to their low amounts. In this study, rhodamine spiroamide groups are immobilized onto the surface of CNCs leading to a hybrid compound being responsive to pH-values, heat and UV light. After the treatment with external stimuli, the fluorescent and correlated optical color change can be induced, which refers to a ring opening and closing process. Amine and amide groups in rhodamine spiroamide play the critical role in this switching process. Solid-state NMR spectroscopy coupled with sensitivity-enhanced dynamic nuclear polarization (DNP) was used to measure 13C and 15N in natural abundance, allowing the determination of structural changes during the switching process. It is shown that a temporary bond through an electrostatic interaction could be formed within the confined environment on the CNC surface during the heat treatment. The carboxyl groups on the CNC surface play a pivotal role in stabilizing the open status of rhodamine spiroamide groups."],["dc.identifier.doi","10.1039/c4cp04096a"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/65440"],["dc.language.iso","en"],["dc.title","Multi-responsive cellulose nanocrystal–rhodamine conjugates: an advanced structure study by solid-state dynamic nuclear polarization (DNP) NMR"],["dc.type","journal_article"],["dc.type.internalPublication","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","4181"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Cellulose"],["dc.bibliographiccitation.lastpage","4194"],["dc.bibliographiccitation.volume","21"],["dc.contributor.author","Geissler, Andreas"],["dc.contributor.author","Scheid, Daniel"],["dc.contributor.author","Li, Weixing"],["dc.contributor.author","Gallei, Markus"],["dc.contributor.author","Zhang, Kai"],["dc.date.accessioned","2020-05-18T09:59:46Z"],["dc.date.available","2020-05-18T09:59:46Z"],["dc.date.issued","2014"],["dc.description.abstract","In comparison to stimuli-responsive, multi-functional nanoparticles (NPs) from synthetic polymers, such NPs based on sustainable, naturally occurring polysaccharides are still scarce. In the present study, stable stimuli-responsive, fluorescent and magnetic NPs were fabricated using cellulose stearoyl esters (CSEs) consisting of cellulose and stearoyl groups. The multifunctional NPs with the average diameters between 80 and 250 nm were obtained after facile nanoprecipitation using CSE solutions containing Fe3O4-NPs. Using the aqueous solution of fluorescent rhodamine B as precipitant, NPs with rhodamine B on NP surface were obtained. Rhodamine B could be released depending on the temperature. In comparison, stearoylaminoethyl rhodamine B can be encapsulated in CSE-NPs, which renders obtained NPs reversible fluorescence in response to UV illumination and heat treatment."],["dc.identifier.doi","10.1007/s10570-014-0412-2"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/65510"],["dc.language.iso","en"],["dc.title","Facile formation of stimuli-responsive, fluorescent and magnetic nanoparticles based on cellulose stearoyl ester via nanoprecipitation"],["dc.type","journal_article"],["dc.type.internalPublication","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","213625"],["dc.bibliographiccitation.journal","Coordination Chemistry Reviews"],["dc.bibliographiccitation.volume","429"],["dc.contributor.author","Li, Bin"],["dc.contributor.author","Yang, Ying"],["dc.contributor.author","Zhu, Hongping"],["dc.contributor.author","Roesky, Herbert W."],["dc.date.accessioned","2021-04-14T08:29:03Z"],["dc.date.available","2021-04-14T08:29:03Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1016/j.ccr.2020.213625"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/82780"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.issn","0010-8545"],["dc.title","(β-Diketiminato)aluminum hydroxides and the chalcogenide derivatives: Precursors for homo- and heterometallic complexes with Al-E-M (E = chalcogen, M = metal) frameworks"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","237"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Nano Letters"],["dc.bibliographiccitation.lastpage","242"],["dc.bibliographiccitation.volume","16"],["dc.contributor.author","Chizhik, Anna M."],["dc.contributor.author","Stein, Simon"],["dc.contributor.author","Dekaliuk, Mariia O."],["dc.contributor.author","Battle, Christopher"],["dc.contributor.author","Li, Weixing"],["dc.contributor.author","Huss, Anja"],["dc.contributor.author","Platen, Mitja"],["dc.contributor.author","Schaap, Iwan A. T."],["dc.contributor.author","Gregor, Ingo"],["dc.contributor.author","Demchenko, Alexander P."],["dc.contributor.author","Schmidt, Christoph F."],["dc.contributor.author","Enderlein, Jörg"],["dc.contributor.author","Chizhik, Alexey"],["dc.date.accessioned","2017-09-07T11:54:46Z"],["dc.date.available","2017-09-07T11:54:46Z"],["dc.date.issued","2016"],["dc.description.abstract","Success in super-resolution imaging relies on a proper choice of fluorescent probes. Here, we suggest novel easily produced and biocompatible nanoparticles-carbon nanodots-for super-resolution optical fluctuation bioimaging (SOFT). The particles revealed an intrinsic dual-color fluorescence, which corresponds to two subpopulations of particles of different electric charges. The neutral nanoparticles localize to cellular nuclei suggesting their potential use as an inexpensive, easily produced nucleus-specific label. The single particle study revealed that the carbon nanodots possess a unique hybrid combination of fluorescence properties exhibiting characteristics of both dye molecules and semiconductor nanocrystals. The results suggest that charge trapping and redistribution on the surface of the particles triggers their transitions between emissive and dark states. These findings open up new possibilities for the utilization of carbon nanodots in the various super-resolution microscopy methods based on stochastic optical switching."],["dc.identifier.doi","10.1021/acs.nanolett.5b03609"],["dc.identifier.gro","3141754"],["dc.identifier.isi","000368322700038"],["dc.identifier.pmid","26605640"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/702"],["dc.language.iso","en"],["dc.notes.intern","WoS Import 2017-03-10"],["dc.notes.status","final"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation.eissn","1530-6992"],["dc.relation.issn","1530-6984"],["dc.title","Super-Resolution Optical Fluctuation Bio-Imaging with Dual-Color Carbon Nanodots"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","212"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","The European Physical Journal C"],["dc.bibliographiccitation.volume","81"],["dc.contributor.author","Andreev, V."],["dc.contributor.author","Baghdasaryan, A."],["dc.contributor.author","Baty, A."],["dc.contributor.author","Begzsuren, K."],["dc.contributor.author","Belousov, A."],["dc.contributor.author","Bolz, A."],["dc.contributor.author","Boudry, V."],["dc.contributor.author","Brandt, G."],["dc.contributor.author","Britzger, D."],["dc.contributor.author","Zomer, F."],["dc.contributor.author","Hoffmann, D."],["dc.contributor.author","Li, W."],["dc.contributor.author","Meyer, J."],["dc.contributor.author","Müller, K."],["dc.contributor.author","Sauter, M."],["dc.contributor.author","Schmitt, S."],["dc.contributor.author","Schöning, A."],["dc.contributor.author","Ullrich, T."],["dc.contributor.author","Zhang, J."],["dc.date.accessioned","2021-04-14T09:58:39Z"],["dc.date.available","2021-04-14T09:58:39Z"],["dc.date.issued","2021"],["dc.date.updated","2022-07-29T10:04:10Z"],["dc.description.abstract","Abstract\r\n Charged particle multiplicity distributions in positron-proton deep inelastic scattering at a centre-of-mass energy \r\n \r\n \r\n \r\n $\\sqrt{s}=319$\r\n \r\n \r\n \r\n s\r\n \r\n =\r\n 319\r\n \r\n \r\n  GeV are measured. The data are collected with the H1 detector at HERA corresponding to an integrated luminosity of 136  pb\r\n \r\n \r\n \r\n $^{-1}$\r\n \r\n \r\n \r\n \r\n -\r\n 1\r\n \r\n \r\n \r\n . Charged particle multiplicities are measured as a function of photon virtuality \r\n \r\n \r\n \r\n $Q^2$\r\n \r\n \r\n Q\r\n 2\r\n \r\n \r\n , inelasticity y and pseudorapidity \r\n \r\n \r\n \r\n $\\eta $\r\n \r\n η\r\n \r\n in the laboratory and the hadronic centre-of-mass frames. Predictions from different Monte Carlo models are compared to the data. The first and second moments of the multiplicity distributions are determined and the KNO scaling behaviour is investigated. The multiplicity distributions as a function of \r\n \r\n \r\n \r\n $Q^2$\r\n \r\n \r\n Q\r\n 2\r\n \r\n \r\n    and the Bjorken variable \r\n \r\n \r\n \r\n $x_{\\mathrm{bj}}$\r\n \r\n \r\n x\r\n bj\r\n \r\n \r\n are converted to the hadron entropy \r\n \r\n \r\n \r\n $S_{\\mathrm{hadron}}$\r\n \r\n \r\n S\r\n hadron\r\n \r\n \r\n , and predictions from a quantum entanglement model are tested."],["dc.identifier.citation","The European Physical Journal C. 2021 Mar 03;81(3):212"],["dc.identifier.doi","10.1140/epjc/s10052-021-08896-1"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/84136"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.publisher","Springer Berlin Heidelberg"],["dc.relation.eissn","1434-6052"],["dc.relation.issn","1434-6044"],["dc.rights.holder","The Author(s)"],["dc.title","Measurement of charged particle multiplicity distributions in DIS at HERA and its implication to entanglement entropy of partons"],["dc.title.alternative","H1 Collaboration"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","750"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","CNS & Neurological Disorders - Drug Targets"],["dc.bibliographiccitation.lastpage","762"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Li, W."],["dc.contributor.author","Holsinger, R. M. D."],["dc.contributor.author","Kruse, C. A."],["dc.contributor.author","Fluegel, Alexander"],["dc.contributor.author","Graeber, Manuel B."],["dc.date.accessioned","2018-11-07T09:20:08Z"],["dc.date.available","2018-11-07T09:20:08Z"],["dc.date.issued","2013"],["dc.description.abstract","Diffuse and unstoppable infiltration of brain and spinal cord tissue by neoplastic glial cells is the single most important therapeutic problem posed by the common glioma group of tumors: astrocytoma, oligoastrocytoma, oligodendroglioma, their malignant variants and glioblastoma. These neoplasms account for more than two thirds of all malignant central nervous system tumors. However, most glioma research focuses on an examination of the tumor cells rather than on host-specific, tumor micro-environmental cells and factors. This can explain why existing diffuse glioma therapies fail and why these tumors have remained incurable. Thus, there is a great need for innovation. We describe a novel strategy for the development of a more effective treatment of diffuse glioma. Our approach centers on gaining control over the behavior of the microglia, the defense cells of the CNS, which are manipulated by malignant glioma and support its growth. Armoring microglia against the influences from glioma is one of our research goals. We further discuss how microglia precursors may be genetically enhanced to track down infiltrating glioma cells."],["dc.description.sponsorship","NHMRC [570398]"],["dc.identifier.isi","000327797200007"],["dc.identifier.pmid","24047526"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/28810"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Bentham Science Publ Ltd"],["dc.relation.issn","1996-3181"],["dc.relation.issn","1871-5273"],["dc.title","The Potential for Genetically Altered Microglia to Influence Glioma Treatment"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1774"],["dc.bibliographiccitation.issue","14"],["dc.bibliographiccitation.journal","ChemPhysChem"],["dc.bibliographiccitation.lastpage","1780"],["dc.bibliographiccitation.volume","19"],["dc.contributor.author","Hulleman, Christiaan N."],["dc.contributor.author","Li, Weixing"],["dc.contributor.author","Gregor, Ingo"],["dc.contributor.author","Rieger, Bernd"],["dc.contributor.author","Enderlein, Jörg"],["dc.date.accessioned","2022-03-01T11:45:20Z"],["dc.date.available","2022-03-01T11:45:20Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1002/cphc.201800131"],["dc.identifier.eissn","1439-7641"],["dc.identifier.issn","1439-4235"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/103293"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-531"],["dc.relation.eissn","1439-7641"],["dc.relation.issn","1439-4235"],["dc.rights.uri","http://onlinelibrary.wiley.com/termsAndConditions#vor"],["dc.title","Photon Yield Enhancement of Red Fluorophores at Cryogenic Temperatures"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","33"],["dc.bibliographiccitation.journal","Journal of Materials Chemistry. A, Materials for Energy and Sustainability"],["dc.bibliographiccitation.volume","2"],["dc.contributor.author","Li, Wei"],["dc.contributor.author","Wang, Wei"],["dc.contributor.author","Yang, Yongbiao"],["dc.contributor.author","Zhang, Kai"],["dc.date.accessioned","2020-05-18T10:10:57Z"],["dc.date.available","2020-05-18T10:10:57Z"],["dc.date.issued","2014"],["dc.description.abstract","In comparison to single-stimuli responsive cellulose derivatives, multi-stimuli and reversibly responsive compounds from cellulose are still scarce. In this report, the fabrication of redox-controllable nanoparticles (NPs) from novel cellulose derivatives containing thiol groups and rhodamine spiroamide showing reversible fluorescence is described. The thiol groups were introduced into cellulose chains after esterification by 3,3′-dithiodipropionic acid and further reductive cleavage of disulfide bonds. Then, rhodamine spiroamide was immobilized via thiol–ene reaction between cellulose thiopropionyl ester and rhodamine B methacrylamide. The obtained cellulose derivative containing rhodamine spiroamide (cellulose-RhBMA) could be transformed into NPs in aqueous medium and dissolved again via redox reactions on thiol groups. At the same time, cellulose-RhBMA exhibited reversible fluorescence that could be switched using pH (protons) or UV-illumination/heating as external stimuli. In total, we demonstrated the fabrication of redox-controllable NPs with reversible fluorescence, and a novel platform for the chemical modification of cellulose via thiol–ene reaction."],["dc.identifier.doi","10.1039/c4ta02126f"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/65517"],["dc.language.iso","en"],["dc.title","Redox-responsive, reversibly fluorescent nanoparticles from sustainable cellulose derivatives"],["dc.type","journal_article"],["dc.type.internalPublication","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","113707"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","Review of Scientific Instruments"],["dc.bibliographiccitation.volume","84"],["dc.contributor.author","Bodensiek, Kai"],["dc.contributor.author","Li, Weixing"],["dc.contributor.author","Sanchez, Paula"],["dc.contributor.author","Nawaz, Schanila"],["dc.contributor.author","Schaap, Iwan Alexander Taco"],["dc.date.accessioned","2018-11-07T09:17:45Z"],["dc.date.available","2018-11-07T09:17:45Z"],["dc.date.issued","2013"],["dc.description.abstract","Although atomic force microscopy is often the method of choice to probe the mechanical response of (sub) micrometer sized biomaterials, the lowest force that can be reliably controlled is limited to approximate to 0.1 nN. For soft biological samples, like cells, such forces can already lead to a strain large enough to enter the non-elastic deformation regime. To be able to investigate the response of single cells at lower forces we developed a vertical optical trap. The force can be controlled down to single piconewtons and most of the advantages of atomic force microscopy are maintained, such as the symmetrical application of forces at a wide range of loading rates. Typical consequences of moving the focus in the vertical direction, like the interferometric effect between the bead and the coverslip and a shift of focus, were quantified and found to have negligible effects on our measurements. With a fast responding force feedback loop we can achieve deformation rates as high as 50 mu m/s, which allow the investigation of the elastic and viscous components of very soft samples. The potential of the vertical optical trap is demonstrated by measuring the linearity of the response of single cells at very low forces and a high bandwidth of deformation rates. (C) 2013 AIP Publishing LLC."],["dc.identifier.doi","10.1063/1.4832036"],["dc.identifier.isi","000329982000026"],["dc.identifier.pmid","24289404"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/28243"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Inst Physics"],["dc.relation.issn","1089-7623"],["dc.relation.issn","0034-6748"],["dc.title","A high-speed vertical optical trap for the mechanical testing of living cells at piconewton forces"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","3770"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Optics Express"],["dc.bibliographiccitation.lastpage","3783"],["dc.bibliographiccitation.volume","23"],["dc.contributor.author","Li, Weixing"],["dc.contributor.author","Stein, Simon C."],["dc.contributor.author","Gregor, Ingo"],["dc.contributor.author","Enderlein, Jörg"],["dc.date.accessioned","2018-04-23T11:49:25Z"],["dc.date.available","2018-04-23T11:49:25Z"],["dc.date.issued","2015"],["dc.description.abstract","We developed a stand-alone cryostat with optical access to the sample which can be adapted to any epi-fluorescence microscope for single-molecule fluorescence spectroscopy and imaging. The cryostat cools the sample to a cryogenic temperature of 89 K, and allows for imaging single molecules using an air objective with a numerical aperture of 0.7. An important property of this system is its excellent thermal and mechanical stability, enabling long-time observations of samples over several hours with negligible drift. Using this system, we performed photo-bleaching studies of Atto647N dye molecules, and find an improvement of the photostability of these molecules by more than two orders of magnitude. The resulting increased photon numbers of several millions allow for single-molecule localization accuracy of sub-nanometer."],["dc.identifier.doi","10.1364/oe.23.003770"],["dc.identifier.gro","3142112"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/13692"],["dc.language.iso","en"],["dc.notes.intern","lifescience updates Crossref Import"],["dc.notes.status","final"],["dc.relation.doi","10.1364/oe.23.003770"],["dc.relation.eissn","1094-4087"],["dc.relation.issn","1094-4087"],["dc.relation.issn","1094-4087"],["dc.title","Ultra-stable and versatile widefield cryo-fluorescence microscope for single-molecule localization with sub-nanometer accuracy"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]