Related Experiment Video
Updated: Aug 9, 2026

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core
Published on: October 24, 2017
BN-embedded oligo- and poly(thiophene iminoborane)s: dipole-aligned isosteres of poly(thiophene vinylene) with
Johannes Chorbacher1,2, Thomas Derra1,2, Jonas Klopf1,2
1Julius-Maximilians-Universität Würzburg, Institute of Inorganic Chemistry Am Hubland 97074 Würzburg Germany holger.helten@uni-wuerzburg.de.
Abstract:
The substitution of C[double bond, length as m-dash]C units by isoelectronic and isosteric B[double bond, length as m-dash]N motifs in π-conjugated systems has emerged as a powerful strategy to access materials with tailored optoelectronic properties. Herein, we report the first strictly BN-alternating poly(thiophene iminoborane), representing a boron-nitrogen isostere of poly(thiophene vinylene). The BN-PTV is obtained via AB-type polycondensation of monomers bearing complementary B and N termini, which also enables the synthesis of monodisperse oligomers comprising up to three BN units. The BN-alternating oligomers and polymer exhibit efficient π-conjugation and markedly enhanced emission compared to previously reported BBNN-type analogues. In addition, they display aggregation-induced or -enhanced emission (AIE/AEE), as well as low-temperature phosphorescence and efficient room-temperature phosphorescence (RTP) in inert PMMA matrices. These results establish BN-embedded PTV analogues as a promising platform for the design of advanced conjugated materials with tunable photophysical properties.
More Related Videos
09:17Reductive Electropolymerization of a Vinyl-containing Poly-pyridyl Complex on Glassy Carbon and Fluorine-doped Tin Oxide Electrodes
Published on: January 30, 2015
06:08Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera
Published on: December 27, 2018
Related Concept Videos
Olefin Metathesis Polymerization: Ring-Opening Metathesis Polymerization (ROMP)
Photoluminescence: Applications
Thermal Electrocyclic Reactions: Stereochemistry
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
Thermal and Photochemical Electrocyclic Reactions: Overview
Photoluminescence: Fluorescence and Phosphorescence
A pair of electrons in a...
Variables Affecting Phosphorescence and Fluorescence