Related Experiment Video
Updated: Jan 31, 2026

Synthesis of Ligand-free CdS Nanoparticles within a Sulfur Copolymer Matrix
Published on: May 1, 2016
A single-stranded coordination copolymer affords heterostructure observation and photoluminescence intensification
Ryojun Toyoda1, Ryota Sakamoto1,2, Naoya Fukui1
1Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
Abstract:
Few artificial systems can be exfoliated into, and observed as, single wires with lengths of more than several micrometers, and no previous example features a copolymer structure; this is in contrast with biopolymers such as single-strand DNAs. Here, we create a set of one-dimensional coordination copolymers featuring bis(dipyrrinato)zinc complex motifs in the main chain. A series of random copolymers is synthesized from two types of bridging dipyrrin proligand and zinc acetate, with various molar ratios between the proligands. Sonication of the bulk solid copolymer in organic solvent exfoliates single strands with lengths of 1.4 to 3.0 μm. Atomic force microscopy at ambient conditions visualizes the copolymer structure as height distributions. The copolymer structure improves its photoluminescence (up to 32%) relative to that of the corresponding homopolymers (3 and 10%). Numerical simulation based on a restricted random walk model reproduces the photoluminescence intensification, suggesting at the same time the existence of fast intrawire exciton hopping.
More Related Videos
Related Concept Videos
Single-Strand DNA Binding Proteins
Coordination Number and Geometry
Photoluminescence: Applications
Lagging Strand Synthesis
There are several major differences between synthesis of the leading strand and synthesis of the lagging strand. 1) Leading strand synthesis happens in the direction of replication fork opening, whereas lagging strand synthesis happens in the...
Coordination Compounds and Nomenclature
Lattice Centering and Coordination Number
Types of Unit Cells
Imagine taking a large number of identical...

