Surface energy-driven growth of crystalline PbS octahedra and dendrites in the presence of cyclodextrin–surfactant supramolecular complexes

Pradip Kumar, Whi Dong Kim, Seokwon Lee, Dennis T. Lee, Kangtaek Lee, Doh C. Lee

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

PbS crystals of cubic, octahedral, and dendritic shapes are synthesized in an aqueous solution that contains supramolecular complexes of β-cyclodextrin (CD) and hexadecyltrimethylammonium bromide (CTAB). The morphology of the PbS crystals depends on the concentration of CD or CTAB in the reaction solution; for example, the branched dendritic structures evolve with an appropriate molar ratio of CD/CTAB supramolecular complexes and reaction time. Regardless of the CD/CTAB molar ratios, octahedral PbS crystals are observed at all compositions of CD/CTAB for the reaction times of 1–5 h, while self-assembled branched/dendritic structures are obtained only for CD/CTAB molar ratios of 0.5, 1, and 2 after a prolonged reaction, e.g., for 24–48 h. Systematic investigation reveals that both reaction time and CD/CTAB molar ratio are responsible for self-assembled branched/dendritic structures of octahedral crystals.

Original languageEnglish
JournalJournal of Nanoparticle Research
Volume17
Issue number2
DOIs
Publication statusPublished - 2015 Jan 1

Fingerprint

Octahedron
Dendrite
Cyclodextrins
Surface Energy
dendrites
Interfacial energy
surface energy
Reaction Time
bromides
Crystal
Crystalline materials
reaction time
Crystals
crystals
cetrimonium
aqueous solutions
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Modelling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

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title = "Surface energy-driven growth of crystalline PbS octahedra and dendrites in the presence of cyclodextrin–surfactant supramolecular complexes",
abstract = "PbS crystals of cubic, octahedral, and dendritic shapes are synthesized in an aqueous solution that contains supramolecular complexes of β-cyclodextrin (CD) and hexadecyltrimethylammonium bromide (CTAB). The morphology of the PbS crystals depends on the concentration of CD or CTAB in the reaction solution; for example, the branched dendritic structures evolve with an appropriate molar ratio of CD/CTAB supramolecular complexes and reaction time. Regardless of the CD/CTAB molar ratios, octahedral PbS crystals are observed at all compositions of CD/CTAB for the reaction times of 1–5 h, while self-assembled branched/dendritic structures are obtained only for CD/CTAB molar ratios of 0.5, 1, and 2 after a prolonged reaction, e.g., for 24–48 h. Systematic investigation reveals that both reaction time and CD/CTAB molar ratio are responsible for self-assembled branched/dendritic structures of octahedral crystals.",
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Surface energy-driven growth of crystalline PbS octahedra and dendrites in the presence of cyclodextrin–surfactant supramolecular complexes. / Kumar, Pradip; Kim, Whi Dong; Lee, Seokwon; Lee, Dennis T.; Lee, Kangtaek; Lee, Doh C.

In: Journal of Nanoparticle Research, Vol. 17, No. 2, 01.01.2015.

Research output: Contribution to journalArticle

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T1 - Surface energy-driven growth of crystalline PbS octahedra and dendrites in the presence of cyclodextrin–surfactant supramolecular complexes

AU - Kumar, Pradip

AU - Kim, Whi Dong

AU - Lee, Seokwon

AU - Lee, Dennis T.

AU - Lee, Kangtaek

AU - Lee, Doh C.

PY - 2015/1/1

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N2 - PbS crystals of cubic, octahedral, and dendritic shapes are synthesized in an aqueous solution that contains supramolecular complexes of β-cyclodextrin (CD) and hexadecyltrimethylammonium bromide (CTAB). The morphology of the PbS crystals depends on the concentration of CD or CTAB in the reaction solution; for example, the branched dendritic structures evolve with an appropriate molar ratio of CD/CTAB supramolecular complexes and reaction time. Regardless of the CD/CTAB molar ratios, octahedral PbS crystals are observed at all compositions of CD/CTAB for the reaction times of 1–5 h, while self-assembled branched/dendritic structures are obtained only for CD/CTAB molar ratios of 0.5, 1, and 2 after a prolonged reaction, e.g., for 24–48 h. Systematic investigation reveals that both reaction time and CD/CTAB molar ratio are responsible for self-assembled branched/dendritic structures of octahedral crystals.

AB - PbS crystals of cubic, octahedral, and dendritic shapes are synthesized in an aqueous solution that contains supramolecular complexes of β-cyclodextrin (CD) and hexadecyltrimethylammonium bromide (CTAB). The morphology of the PbS crystals depends on the concentration of CD or CTAB in the reaction solution; for example, the branched dendritic structures evolve with an appropriate molar ratio of CD/CTAB supramolecular complexes and reaction time. Regardless of the CD/CTAB molar ratios, octahedral PbS crystals are observed at all compositions of CD/CTAB for the reaction times of 1–5 h, while self-assembled branched/dendritic structures are obtained only for CD/CTAB molar ratios of 0.5, 1, and 2 after a prolonged reaction, e.g., for 24–48 h. Systematic investigation reveals that both reaction time and CD/CTAB molar ratio are responsible for self-assembled branched/dendritic structures of octahedral crystals.

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