Current Organic Chemistry - Volume 14, Issue 18, 2010

Since the first discovery of conducting polymers in 1970s, functional π-systems such as oligomers, polymers, dendrimers and polycyclic aromatics have received intense scientific and industrial interest due to their tunable optical and electronic properties. Functional π-systems can find many practical applications for such as flexible electronic devices (e.g. organic field effect transistor (OFET), organic light-emitting diode (OLE Read More

Polythiophenes (PTs) are one of the most important classes of conjugated polymers employed as semiconductors in organic field-effect transistors (OFETs). In the last few years, versatile thiophene-based polymers have received great interest for applications in large-area, flexible, and low-cost electronics attributing to their excellent optoelectronic properties. Significant progress has been made in PT-based semiconductors for h Read More

Organic light emitting diodes (OLEDs), as an emerging technology for display and solid state lighting application, have many advantages including self-emission, lightweight, flexibility, low driving voltage, low power consumption, and low production cost. With the advancement of light emitting materials development and device architecture optimization, mobile phones and televisions based on OLED technology are already in th Read More

Acenes, linearly fused aromatic hydrocarbons, have been the subjects of extensive research because of interesting electronic properties associated with their linear delocalized π-system. The potential applications of these acene-based materials in electronic devices such as field-effect transistor (FET), light-emitting diode (LED) and solar cell have been recently exploited. This review will focus on the synthetic approaches toward a Read More

It has been a textbook knowledge that chromophore aggregation generally quenches light emission. While in 2001, we discovered a novel phenomenon of aggregation-induced emission (AIE): a series of propeller-shaped molecules were found nonluminescent in the solution state but emissive in the aggregate and solid states. Attracted by the intriguing phenomenon and its fascinating perspectives, we launched a rese Read More

Electrophosphorescent polymers are an important class of light-emitting materials that combine high electroluminescence efficiency of organometallic phosphohrescent complexes and solution processability of polymers. This review surveys the progress in the design, synthesis, characterization, photoluminescence and electroluminescence of electrophosphorescent polymers reported in the recent literatures. It f Read More

Currently, how to obtain near-infrared (NIR) dyes is intriguing and attractive but full of challenges. Although some cyanine dyes have been commercialized, near infrared dyes with intensive NIR absorption and/or emission, good chemical and photo-stability, and high solubility still remain as challenging targets. Certain polycyclic aromatic compounds such as rylenes, porphyrins, and phthalocyanines represent a key class o Read More

Spirocyclic aromatic hydrocarbons (SAHs) or spirocyclic arenes are functional building blocks in constructing amorphous organic/ polymeric semiconductors with high glass transition temperatures for organic electronic devices. In this review, SAHs were categorized into three classes - mono-spirocyclic aromatic hydrocarbons (MSAHs), heteroatom-containing spirocyclic aromatic hydrocarbons (HSAHs), and polyspirocycl Read More

Phenylene-based polymers are a widely studied class of blue-emitting materials for use in polymer light-emitting diodes intended for display applications. This review looks at the various types of such polymers that have been synthesised and the problems that have arisen in obtaining stable and efficient blue emission from them. The emission colour from phenylene-based polymers can be controlled by linking some or Read More