000893896 001__ 893896
000893896 005__ 20220131120348.0
000893896 0247_ $$2doi$$a10.1021/acs.jpcc.9b11732
000893896 0247_ $$2ISSN$$a1932-7447
000893896 0247_ $$2ISSN$$a1932-7455
000893896 0247_ $$2Handle$$a2128/28123
000893896 0247_ $$2WOS$$aWOS:000529225800047
000893896 037__ $$aFZJ-2021-02908
000893896 041__ $$aEnglish
000893896 082__ $$a530
000893896 1001_ $$00000-0002-5578-7731$$aMeierhofer, Florian$$b0
000893896 245__ $$aCitric Acid Based Carbon Dots with Amine Type Stabilizers: pH-Specific Luminescence and Quantum Yield Characteristics
000893896 260__ $$aWashington, DC$$bSoc.$$c2020
000893896 3367_ $$2DRIVER$$aarticle
000893896 3367_ $$2DataCite$$aOutput Types/Journal article
000893896 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1626079562_12087
000893896 3367_ $$2BibTeX$$aARTICLE
000893896 3367_ $$2ORCID$$aJOURNAL_ARTICLE
000893896 3367_ $$00$$2EndNote$$aJournal Article
000893896 520__ $$aWe report the synthesis and spectroscopic characteristics of two different sets of carbon dots (CDs) formed by hydrothermal reaction between citric acid and polyethylenimine (PEI) or 2,3-diaminopyridine (DAP). Although the formation of amide-based species and the presence of citrazinic acid type derivates assumed to be responsible for a blue emission is confirmed for both CDs by elemental analysis, infrared spectroscopy, and mass spectrometry, a higher abundance of sp2-hybridized nitrogen is observed for DAP-based CDs, which causes a red-shift of the n-π* absorption band relative to the one of PEI-based CDs. These CD systems possess high photoluminescence quantum yields (QY) of ∼40% and ∼48% at neutral pH, demonstrating a possible tuning of the optical properties by the amine precursor. pH-Dependent spectroscopic studies revealed a drop in QY to < 9% (pH ∼ 1) and < 21% (pH ∼ 12) for both types of CDs under acidic and basic conditions. In contrast, significant differences in the pH-dependency of the n-π* transitions are found for both CD types which are ascribed to different (de)protonation sequences of the CD-specific fluorophores and functional groups using zeta potential analysis.
000893896 536__ $$0G:(DE-HGF)POF4-5351$$a5351 - Platform for Correlative, In Situ and Operando Characterization (POF4-535)$$cPOF4-535$$fPOF IV$$x0
000893896 536__ $$0G:(DE-HGF)VH-NG-1317$$amoreSTEM - Momentum-resolved Scanning Transmission Electron Microscopy (VH-NG-1317)$$cVH-NG-1317$$x1
000893896 588__ $$aDataset connected to DataCite
000893896 7001_ $$0P:(DE-HGF)0$$aWeigert, Florian$$b1
000893896 7001_ $$0P:(DE-HGF)0$$aDissinger, Frank$$b2
000893896 7001_ $$0P:(DE-HGF)0$$aJungclaus, Jörgen$$b3
000893896 7001_ $$0P:(DE-Juel1)165314$$aMüller-Caspary, Knut$$b4
000893896 7001_ $$00000-0002-7949-9638$$aWaldvogel, Siegfried R.$$b5
000893896 7001_ $$00000-0002-0944-1115$$aResch-Genger, Ute$$b6$$eCorresponding author
000893896 7001_ $$00000-0003-2580-2723$$aVoss, Tobias$$b7$$eCorresponding author
000893896 773__ $$0PERI:(DE-600)2256522-X$$a10.1021/acs.jpcc.9b11732$$gVol. 124, no. 16, p. 8894 - 8904$$n16$$p8894 - 8904$$tThe journal of physical chemistry <Washington, DC> / C$$v124$$x1932-7455$$y2020
000893896 8564_ $$uhttps://juser.fz-juelich.de/record/893896/files/acs.jpcc.9b11732.pdf
000893896 8564_ $$uhttps://juser.fz-juelich.de/record/893896/files/jp-2019-117324%20_revised_ms%20%28no%20highlights%29%20.pdf$$yPublished on 2020-04-02. Available in OpenAccess from 2021-04-02.
000893896 909CO $$ooai:juser.fz-juelich.de:893896$$pdnbdelivery$$pdriver$$pVDB$$popen_access$$popenaire
000893896 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)165314$$aForschungszentrum Jülich$$b4$$kFZJ
000893896 9101_ $$0I:(DE-HGF)0$$60000-0002-7949-9638$$aExternal Institute$$b5$$kExtern
000893896 9101_ $$0I:(DE-HGF)0$$60000-0002-0944-1115$$aExternal Institute$$b6$$kExtern
000893896 9101_ $$0I:(DE-HGF)0$$60000-0003-2580-2723$$aExternal Institute$$b7$$kExtern
000893896 9131_ $$0G:(DE-HGF)POF4-535$$1G:(DE-HGF)POF4-530$$2G:(DE-HGF)POF4-500$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF4-5351$$aDE-HGF$$bKey Technologies$$lMaterials Systems Engineering$$vMaterials Information Discovery$$x0
000893896 9141_ $$y2021
000893896 915__ $$0StatID:(DE-HGF)0200$$2StatID$$aDBCoverage$$bSCOPUS$$d2021-02-02
000893896 915__ $$0StatID:(DE-HGF)0300$$2StatID$$aDBCoverage$$bMedline$$d2021-02-02
000893896 915__ $$0StatID:(DE-HGF)0530$$2StatID$$aEmbargoed OpenAccess
000893896 915__ $$0StatID:(DE-HGF)0100$$2StatID$$aJCR$$bJ PHYS CHEM C : 2019$$d2021-02-02
000893896 915__ $$0StatID:(DE-HGF)0113$$2StatID$$aWoS$$bScience Citation Index Expanded$$d2021-02-02
000893896 915__ $$0StatID:(DE-HGF)0150$$2StatID$$aDBCoverage$$bWeb of Science Core Collection$$d2021-02-02
000893896 915__ $$0StatID:(DE-HGF)9900$$2StatID$$aIF < 5$$d2021-02-02
000893896 915__ $$0StatID:(DE-HGF)1150$$2StatID$$aDBCoverage$$bCurrent Contents - Physical, Chemical and Earth Sciences$$d2021-02-02
000893896 915__ $$0StatID:(DE-HGF)0160$$2StatID$$aDBCoverage$$bEssential Science Indicators$$d2021-02-02
000893896 915__ $$0StatID:(DE-HGF)0199$$2StatID$$aDBCoverage$$bClarivate Analytics Master Journal List$$d2021-02-02
000893896 920__ $$lyes
000893896 9201_ $$0I:(DE-Juel1)ER-C-1-20170209$$kER-C-1$$lPhysik Nanoskaliger Systeme$$x0
000893896 980__ $$ajournal
000893896 980__ $$aVDB
000893896 980__ $$aUNRESTRICTED
000893896 980__ $$aI:(DE-Juel1)ER-C-1-20170209
000893896 9801_ $$aFullTexts