Controlled Morphological Arrangement of Anisotropic Nanoparticles via Oxidation or Ionic Cross-Linking

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Marina Rosebrock
  • Rebecca T. Graf
  • Daniel Kranz
  • Hannah Christmann
  • Hannah Bronner
  • Adrian Hannebauer
  • Dániel Zámbó
  • Dirk Dorfs
  • Nadja C. Bigall
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Details

Original languageEnglish
Article number2300186
Number of pages9
JournalSmall Structures
Volume4
Issue number12
Publication statusPublished - 11 Dec 2023

Abstract

For a long time, researchers in nanochemistry have been exploring ways to create 3D structures using cross-linked nanoparticles, such as lyogels and aerogels. In the present work, how simple modifications to the nanoparticle surface can be used to influence the resulting structure in a targeted manner is demonstrated. Specifically, positively charged surface ligands containing amine groups are compared to negatively charged ligands typically used, containing carboxylic acid groups, to generate network structures using different gelation agents. By utilizing bridging through S2− ions, a network structure of anisotropic CdSe/CdS nanorods is generated, packing them side by side at the nanoscopic level. The resulting structures exhibit improved fluorescence properties comparable to those of tip-to-tip connected networks but without harsh conditions for the nanoparticle surfaces. This innovative new method of gelation using S2− ions can achieve adequate photoluminescence quantum yields as well as prolonged fluorescence lifetimes compared to other network structures.

Keywords

    aerogels, fluorescence enhancements, ionic gelations, nanoparticles, semiconductors

ASJC Scopus subject areas

Cite this

Controlled Morphological Arrangement of Anisotropic Nanoparticles via Oxidation or Ionic Cross-Linking. / Rosebrock, Marina; Graf, Rebecca T.; Kranz, Daniel et al.
In: Small Structures, Vol. 4, No. 12, 2300186, 11.12.2023.

Research output: Contribution to journalArticleResearchpeer review

Rosebrock, M, Graf, RT, Kranz, D, Christmann, H, Bronner, H, Hannebauer, A, Zámbó, D, Dorfs, D & Bigall, NC 2023, 'Controlled Morphological Arrangement of Anisotropic Nanoparticles via Oxidation or Ionic Cross-Linking', Small Structures, vol. 4, no. 12, 2300186. https://doi.org/10.1002/sstr.202300186, https://doi.org/10.15488/15642
Rosebrock, M., Graf, R. T., Kranz, D., Christmann, H., Bronner, H., Hannebauer, A., Zámbó, D., Dorfs, D., & Bigall, N. C. (2023). Controlled Morphological Arrangement of Anisotropic Nanoparticles via Oxidation or Ionic Cross-Linking. Small Structures, 4(12), Article 2300186. https://doi.org/10.1002/sstr.202300186, https://doi.org/10.15488/15642
Rosebrock M, Graf RT, Kranz D, Christmann H, Bronner H, Hannebauer A et al. Controlled Morphological Arrangement of Anisotropic Nanoparticles via Oxidation or Ionic Cross-Linking. Small Structures. 2023 Dec 11;4(12):2300186. doi: 10.1002/sstr.202300186, 10.15488/15642
Rosebrock, Marina ; Graf, Rebecca T. ; Kranz, Daniel et al. / Controlled Morphological Arrangement of Anisotropic Nanoparticles via Oxidation or Ionic Cross-Linking. In: Small Structures. 2023 ; Vol. 4, No. 12.
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title = "Controlled Morphological Arrangement of Anisotropic Nanoparticles via Oxidation or Ionic Cross-Linking",
abstract = "For a long time, researchers in nanochemistry have been exploring ways to create 3D structures using cross-linked nanoparticles, such as lyogels and aerogels. In the present work, how simple modifications to the nanoparticle surface can be used to influence the resulting structure in a targeted manner is demonstrated. Specifically, positively charged surface ligands containing amine groups are compared to negatively charged ligands typically used, containing carboxylic acid groups, to generate network structures using different gelation agents. By utilizing bridging through S2− ions, a network structure of anisotropic CdSe/CdS nanorods is generated, packing them side by side at the nanoscopic level. The resulting structures exhibit improved fluorescence properties comparable to those of tip-to-tip connected networks but without harsh conditions for the nanoparticle surfaces. This innovative new method of gelation using S2− ions can achieve adequate photoluminescence quantum yields as well as prolonged fluorescence lifetimes compared to other network structures.",
keywords = "aerogels, fluorescence enhancements, ionic gelations, nanoparticles, semiconductors",
author = "Marina Rosebrock and Graf, {Rebecca T.} and Daniel Kranz and Hannah Christmann and Hannah Bronner and Adrian Hannebauer and D{\'a}niel Z{\'a}mb{\'o} and Dirk Dorfs and Bigall, {Nadja C.}",
note = "Funding Information: This work received funding from the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) under Germany's excellence strategy within the cluster of excellence PhoenixD (EXC 2122, project ID 390833453) and the grant BI 1708/4-3. The authors acknowledge the cfMATCH providing the equipment for the Hg porosimetry and argon physisorption measurements. D. D. would like to acknowledge the support by the German Research Foundation (DFG research Grant DO 1580/5-1). D.K. would like to thank the Konrad–Adenauer–Stiftung (KAS) for financial support. D.Z. acknowledges the project no. FK-142148 financed by the Hungarian Scientific Research Fund (NRDI Fund) as well as the project no. TKP-2021-NKTA-05 implemented with the support provided by the Ministry of Innovation and Technology of Hungary from the National Research, Development and Innovation Fund, financed under the TKP2021 funding scheme. R.T.G. and A.H. would like to thank the Hannover School for Nanotechnology for funding. The authors would like to thank A. Feldhoff for the SEM facilities. The authors would like to thank the Laboratorium f{\"u}r Nano- und Quantenengineering (LNQE) for TEM facilities. Open Access funding enabled and organized by Projekt DEAL. Funding Information: This work received funding from the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) under Germany's excellence strategy within the cluster of excellence PhoenixD (EXC 2122, project ID 390833453) and the grant BI 1708/4‐3. The authors acknowledge the cfMATCH providing the equipment for the Hg porosimetry and argon physisorption measurements. D. D. would like to acknowledge the support by the German Research Foundation (DFG research Grant DO 1580/5‐1). D.K. would like to thank the Konrad–Adenauer–Stiftung (KAS) for financial support. D.Z. acknowledges the project no. FK‐142148 financed by the Hungarian Scientific Research Fund (NRDI Fund) as well as the project no. TKP‐2021‐NKTA‐05 implemented with the support provided by the Ministry of Innovation and Technology of Hungary from the National Research, Development and Innovation Fund, financed under the TKP2021 funding scheme. R.T.G. and A.H. would like to thank the Hannover School for Nanotechnology for funding. The authors would like to thank A. Feldhoff for the SEM facilities. The authors would like to thank the Laboratorium f{\"u}r Nano‐ und Quantenengineering (LNQE) for TEM facilities. ",
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T1 - Controlled Morphological Arrangement of Anisotropic Nanoparticles via Oxidation or Ionic Cross-Linking

AU - Rosebrock, Marina

AU - Graf, Rebecca T.

AU - Kranz, Daniel

AU - Christmann, Hannah

AU - Bronner, Hannah

AU - Hannebauer, Adrian

AU - Zámbó, Dániel

AU - Dorfs, Dirk

AU - Bigall, Nadja C.

N1 - Funding Information: This work received funding from the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) under Germany's excellence strategy within the cluster of excellence PhoenixD (EXC 2122, project ID 390833453) and the grant BI 1708/4-3. The authors acknowledge the cfMATCH providing the equipment for the Hg porosimetry and argon physisorption measurements. D. D. would like to acknowledge the support by the German Research Foundation (DFG research Grant DO 1580/5-1). D.K. would like to thank the Konrad–Adenauer–Stiftung (KAS) for financial support. D.Z. acknowledges the project no. FK-142148 financed by the Hungarian Scientific Research Fund (NRDI Fund) as well as the project no. TKP-2021-NKTA-05 implemented with the support provided by the Ministry of Innovation and Technology of Hungary from the National Research, Development and Innovation Fund, financed under the TKP2021 funding scheme. R.T.G. and A.H. would like to thank the Hannover School for Nanotechnology for funding. The authors would like to thank A. Feldhoff for the SEM facilities. The authors would like to thank the Laboratorium für Nano- und Quantenengineering (LNQE) for TEM facilities. Open Access funding enabled and organized by Projekt DEAL. Funding Information: This work received funding from the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) under Germany's excellence strategy within the cluster of excellence PhoenixD (EXC 2122, project ID 390833453) and the grant BI 1708/4‐3. The authors acknowledge the cfMATCH providing the equipment for the Hg porosimetry and argon physisorption measurements. D. D. would like to acknowledge the support by the German Research Foundation (DFG research Grant DO 1580/5‐1). D.K. would like to thank the Konrad–Adenauer–Stiftung (KAS) for financial support. D.Z. acknowledges the project no. FK‐142148 financed by the Hungarian Scientific Research Fund (NRDI Fund) as well as the project no. TKP‐2021‐NKTA‐05 implemented with the support provided by the Ministry of Innovation and Technology of Hungary from the National Research, Development and Innovation Fund, financed under the TKP2021 funding scheme. R.T.G. and A.H. would like to thank the Hannover School for Nanotechnology for funding. The authors would like to thank A. Feldhoff for the SEM facilities. The authors would like to thank the Laboratorium für Nano‐ und Quantenengineering (LNQE) for TEM facilities.

PY - 2023/12/11

Y1 - 2023/12/11

N2 - For a long time, researchers in nanochemistry have been exploring ways to create 3D structures using cross-linked nanoparticles, such as lyogels and aerogels. In the present work, how simple modifications to the nanoparticle surface can be used to influence the resulting structure in a targeted manner is demonstrated. Specifically, positively charged surface ligands containing amine groups are compared to negatively charged ligands typically used, containing carboxylic acid groups, to generate network structures using different gelation agents. By utilizing bridging through S2− ions, a network structure of anisotropic CdSe/CdS nanorods is generated, packing them side by side at the nanoscopic level. The resulting structures exhibit improved fluorescence properties comparable to those of tip-to-tip connected networks but without harsh conditions for the nanoparticle surfaces. This innovative new method of gelation using S2− ions can achieve adequate photoluminescence quantum yields as well as prolonged fluorescence lifetimes compared to other network structures.

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KW - aerogels

KW - fluorescence enhancements

KW - ionic gelations

KW - nanoparticles

KW - semiconductors

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DO - 10.1002/sstr.202300186

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VL - 4

JO - Small Structures

JF - Small Structures

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ER -

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