In the last decade, photoredox catalysis serves as a most exciting topic in organic chemistry, because photoredox catalysts can provide unique and environmentally friendly processes of organic synthesis. Visible light sources are readily available, eco-friendly, highly abundant, and as well as sustainable. Mild reaction conditions are used for the construction of diverse C-C bonds. On the other hand, the organoboron compounds are stable, commercially available and well-suited precursors for the photocatalytic transformations. In the last decade, photoredox catalysis with organoboron compounds has unlocked unprecedented reactivities in synthetic organic chemistry. This mini-review documented several smooth and efficient methodologies for the development of C-C bonds via deborylation in the presence of visible light.

In recent years, organic photo-redox catalysts such as Ru or Ir-metal complexes and organic dyes have expanded the traditional catalytic toolbox due to their sustainability and environment friendliness. The central focus of this review is to explore unconventional photo-catalysts and their catalytic activity in organic transformations. However, an overview of such unorthodox photo-catalysts has been demonstrated herein to illuminate the photocatalytic space in organic synthesis.

Owing to their ability to promote efficient spin-orbit coupling, complexes of iridium(III), platinum(II) and, latterly, gold(III), have attracted attention as the emissive components in OLED displays. Making such complexes liquid crystalline offers some potential advantages and, while liquid-crystalline complexes of iridium(III) and platinum(II) are quite well studied, those of gold(III) are much newer. The preparation and properties of come of these gold(III) complexes are considered.