Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Nanoassemblies designed from semiconductor quantum dots and molecular arrays.

E Zenkevich1, F Cichos, A Shulga

  • 1Institute of Physics, Chemnitz University of Technology, 09107 Chemnitz, Germany.

The Journal of Physical Chemistry. B
|July 21, 2006
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Heart rate variability in patients with incomplete spinal cord injury during a single session of paired associative stimulation.

Scientific reports·2025
Same author

The ever-expanding optics of single-molecules and nanoparticles.

The Journal of chemical physics·2024
Same author

The effect of paired associative stimulation with a high-intensity cortical component and a high-frequency peripheral component on heart rate and heart rate variability in healthy subjects.

Frontiers in rehabilitation sciences·2023
Same author

[THE EFFECTIVENESS OF TREATMENT IN CHILDREN WITH RIGID FLATFEET AND DYSFUNCTION OF THE POSTERIOR TIBIAL TENDON].

Georgian medical news·2021
Same author

Reinforcement learning with artificial microswimmers.

Science robotics·2021
Same author

Rac1 activation can generate untemplated, lamellar membrane ruffles.

BMC biology·2021

Researchers studied nanoassemblies of quantum dots (QD) and porphyrin (H(2)P) molecules. Controlling H(2)P geometry influences assembly and QD photoluminescence quenching, partly via FRET, revealing limited surface attachment sites.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Photochemistry

Background:

  • Quantum dots (CdSe/ZnS) and porphyrins (H(2)P) are key nanomaterials.
  • Controlling molecular interactions is crucial for nanoassembly engineering.
  • Pyridyl functionalization impacts QD-porphyrin complex formation.

Purpose of the Study:

  • To spectroscopically identify nanoassembly formation between CdSe/ZnS QDs and H(2)P.
  • To investigate the role of H(2)P molecular geometry in nanoassembly.
  • To analyze photoluminescence quenching mechanisms and QD surface accessibility.

Main Methods:

  • Static and time-resolved spectroscopic techniques.
  • Photoluminescence (PL) spectroscopy.
  • Förster resonance energy transfer (FRET) analysis.

Related Experiment Videos

Main Results:

  • Nanoassemblies of CdSe/ZnS QDs and H(2)P were spectroscopically confirmed.
  • Pyridyl functionalization led to strong complex formation and QD PL quenching.
  • PL quenching was partly attributed to FRET, explained by the Förster model.
  • Quantitative analysis indicated only ~1/5 H(2)P molecules assemble per QD.
  • A limited number of accessible surface sites for H(2)P attachment were observed.

Conclusions:

  • Nanoassembly formation is controllable via H(2)P molecular design.
  • QD photoluminescence quenching is a key indicator of assembly and energy transfer.
  • QD surfaces have limited, specific sites for H(2)P molecule attachment.