Related Experiment Video
Updated: May 2, 2026
09:02
Using Polystyrene-block-polyacrylic acid-coated Metal Nanoparticles as Monomers for Their Homo- and Co-polymerization
Published on: July 9, 2015
10.2K
Multi-pyrene assemblies supported on stannoxane frameworks: synthesis, structure and photophysical studies.
Subrata Kundu1, Ramesh K Metre, Rajeev Yadav
1Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016 (India), Fax: (+91) 521-259-0007/7436.
Chemistry, an Asian Journal
|March 12, 2014
Summary
Researchers synthesized novel pyrene-containing organostannoxanes using a single-step method. These multi-chromophore assemblies exhibit diverse structures and interesting solid-state photophysical properties.
Area of Science:
- Organometallic Chemistry
- Supramolecular Chemistry
- Materials Science
Background:
- Organostannoxanes serve as versatile scaffolds for constructing multi-chromophore systems.
- The ability to control the number of chromophore units is crucial for tuning material properties.
Purpose of the Study:
- To develop a facile synthesis for pyrene-containing organostannoxanes with varying chromophore units.
- To investigate the structural diversity and supramolecular assembly of these novel compounds.
- To explore the solid-state photophysical behavior of the synthesized organostannoxanes.
Main Methods:
- Single-step synthesis of organostannoxanes using pyrene sulfonic acid or a dicarboxylic acid ligand with organotin precursors.
- Characterization of the synthesized compounds (1-5) using X-ray crystallography.
- Photophysical studies to analyze emission properties in the solid state.
Main Results:
- Successful synthesis of five pyrene-containing organostannoxanes ([Ph3SnPySO3]6 (1), [{(Me2Sn)2(μ3-O)(μ-OH)PySO3}2{(Me2Sn)2(μ3-O)(μ-OH)H2O}2⋅2PySO3] (2), [{tBu2Sn(OH)PySO3}2] (3), [{(nBuSn)12(O)14(OH)6{PySO3}2] (4), and [{(nBu2Sn)L}3]2⋅C6H5CH3 (5)).
- Compounds 1 and 5 were identified as 24-membered macrocycles, with compound 1 showing intramolecular π-π stacking.
- Compound 2 formed an unusual co-crystal of two tetrameric ladders, one neutral and one dicationic.
- Rich supramolecular structures were observed in the solid state for all compounds.
- Solid-state interactions led to significant broadening of emission bands in photophysical studies.
Conclusions:
- The single-step synthesis provides access to a range of pyrene-containing organostannoxanes with tunable chromophore numbers.
- The synthesized compounds display remarkable structural diversity, including macrocycles and complex co-crystals.
- Solid-state packing significantly influences the photophysical properties, causing emission band broadening.
