170702-05-3

Upstream product

• 69249-61-2 3-hexyl-2-bromothiophene 

Downstream Products

• 1290043-56-9 5-bromo-5'-dimesitylboryl-3,3'-dihexyl-2,2'-bithiophene 
• 1290043-58-1 5-pinacolboryl-5'-dimesitylboryl-3,3'-dihexyl-2,2'-bithiophene 
• 1290043-50-3 C₄₇H₅₆BNOS₂ 

Relevant academic research and scientific papers

Intramolecular Noncovalent Interaction-Enabled Dopant-Free Hole-Transporting Materials for High-Performance Inverted Perovskite Solar Cells

Intramolecular noncovalent interactions (INIs) have served as a powerful strategy for accessing organic semiconductors with enhanced charge transport properties. Herein, we apply the INI strategy for developing dopant-free hole-transporting materials (HTMs) by constructing two small-molecular HTMs featuring an INI-integrated backbone for high-performance perovskite solar cells (PVSCs). Upon incorporating noncovalent S???O interaction into their simple-structured backbones, the resulting HTMs, BTORA and BTORCNA, showed self-planarized backbones, tuned energy levels, enhanced thermal properties, appropriate film morphology, and effective defect passivation. More importantly, the high film crystallinity enables the materials with substantial hole mobilities, thus rendering them as promising dopant-free HTMs. Consequently, the BTORCNA-based inverted PVSCs delivered a power conversion efficiency of 21.10 % with encouraging long-term device stability, outperforming the devices based on BTRA without S???O interaction (18.40 %). This work offers a practical approach to designing charge transporting layers with high intrinsic mobilities for high-performance PVSCs.

Synthesis and Characterization of Diferrocenyl Conjugates: Varying π-Conjugated Bridging Ligands and its Consequence on Electrochemical Communication

Organometallic wire-like complexes with ferrocenyl termini, conjugated with one and two units of thienylethynyl (M1 and M2) and thienyl (M3 and M4) groups, have been synthesized with a general formula of [Fc-C≡C-(Th-C≡C)1-2-Fc] and [Fc-(Th)1-2-Fc] (Fc = ferrocenyl, Th = thienyl) respectively. The diferrocenyl organometallic complexes have been characterized by various spectroscopic tools such as multinuclear NMR, FTIR, elemental analysis, and mass spectrometry. The electrochemical properties of these compounds have been investigated by cyclic (CV) and differential pulse voltammetry (DPV). The single reversible oxidation wave in diferrocenyl complexes with thienylethynyl spacers (M1 and M2) indicates the absence of intramolecular electrochemical communication between the two ferrocenyl termini. Interestingly, the diferrocenyl complexes with one and two thienyl spacers (M3 and M4) show two successive reversible one-electron oxidation waves, indicating electronic coupling between the two ferrocenyl (Fc) termini. The potential difference (ΔE1/2) between the two redox centers is 160 mV and 130 mV, respectively, with the corresponding comproportionation constants (Kc) of 6.2 × 102 and 1.5 × 102. Upon mono-oxidation of M3 by [Cp2Fe][BF4], a broad and weak intervalence charge-transfer (IVCT) transition is observed in the NIR region of 1200–2200 nm.

Synthesis and Properties of α,ω-Disubstituted Oligo(3-hexylthiophene)s and Oligothienoquinonoids in Head-to-head Orientation

The two types of Highly-ordered oligo(3-hexylthiophene)s in head-to-head orientation, a series od α,ω-disubstituted oligothiophenes and a series of bis(dicyanomethylene)oligothienoquinonoids, were synthesized.The properties of these compounds are discussed on the basis of the electronic spectra and cyclic voltammetry.

Simple Separation of an Isomeric Mixture of Dihexylbithiophenes with Head-to-head and Head-to-tail Orientations

The isomeric mixture of 3,3'-dialkylbithiophenes with head-to-head (H-H) and head-to-tail (H-T) orientations was separated into each isomer by using preferential bromination of the H-T isomer.This separation method proved to be useful for simultaneous preparation of the pure H-H and H-T bithiophenes which are inaccessable by other methods.