Li, Weixing

[["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.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.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"]]

[["dc.bibliographiccitation.firstpage","5751"],["dc.bibliographiccitation.issue","23"],["dc.bibliographiccitation.journal","The Journal of Physical Chemistry Letters"],["dc.bibliographiccitation.lastpage","5757"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Khan, Syamantak"],["dc.contributor.author","Li, Weixing"],["dc.contributor.author","Karedla, Narain"],["dc.contributor.author","Thiart, Jan"],["dc.contributor.author","Gregor, Ingo"],["dc.contributor.author","Chizhik, Anna M."],["dc.contributor.author","Enderlein, Jörg"],["dc.contributor.author","Nandi, Chayan K."],["dc.contributor.author","Chizhik, Alexey I."],["dc.date.accessioned","2018-04-23T11:48:34Z"],["dc.date.available","2018-04-23T11:48:34Z"],["dc.date.issued","2017"],["dc.description.abstract","This study focuses on the mechanism of fluorescence blinking of single carbon nanodots, which is one of their key but less understood properties. The results of our single-particle fluorescence study show that the mechanism of carbon nanodots blinking has remarkable similarities with that of semiconductor quantum dots. In particular, the temporal behavior of carbon nanodot blinking follows a power law both at room and at cryogenic temperatures. Our experimental data suggest that static quenching via Dexter-type electron transfer between surface groups of a nanoparticle plays a major role in the transition of carbon nanodots to off or gray states, whereas the transition back to on states is governed by an electron tunneling from the particle’s core. These findings advance our understanding of the complex mechanism of carbon nanodots emission, which is one of the key steps for their application in fluorescence imaging."],["dc.identifier.doi","10.1021/acs.jpclett.7b02521"],["dc.identifier.gro","3142095"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/13533"],["dc.language.iso","en"],["dc.notes.intern","lifescience updates Crossref Import"],["dc.notes.status","final"],["dc.relation.issn","1948-7185"],["dc.title","Charge-Driven Fluorescence Blinking in Carbon Nanodots"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]