Step-saving synthesis of star-shaped hole-transporting materials with carbazole or phenothiazine cores via optimized
Jui-Heng Chen1, Kun-Mu Lee2, Chang-Chieh Ting1
1Department of Chemical and Materials Engineering, National Central University Jhongli District Taoyuan 320 Taiwan Republic of China cyliu0312@ncu.edu.tw.
Abstract:
In most research papers, synthesis of organic hole-transporting materials relies on a key-reaction: Stille cross-couplings. This requires tedious prefunctionalizations including the preparation and treatment of unstable organolithium and toxicity-concern organotin reagents. In contrast to traditional multistep synthesis, this work describes that a series of star-shaped small molecules with a carbazole or phenothiazine core can be efficiently synthesized through a shortcut using optimized direct C-H/C-Br cross-couplings as the key step, thus avoiding dealing with the highly reactive organolithium or the toxic organotin species. Device fabrication of perovskite solar cells employing these molecules (6-13) as hole-transporting layers exhibit promising power conversion efficiencies of up to 17.57%.
More Related Videos
08:51Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core
Published on: October 24, 2017
14:11Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach
Published on: June 10, 2021
Related Concept Videos
Diels–Alder Reaction Forming Bridged Bicyclic Products: Stereochemistry
[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction
Benzene to 1,4-Cyclohexadiene: Birch Reduction Mechanism
Diazonium Group Substitution with Halogens and Cyanide: Sandmeyer and Schiemann Reactions
Benzene to Phenol via Cumene: Hock Process
Synthesis of α-Substituted Carbonyl Compounds: The Stork Enamine Reaction
