Diketopyrrolopyrrole-based semiconducting polymer bearing thermocleavable side chains
作者:Bin Sun、Wei Hong、Hany Aziz、Yuning Li
DOI:10.1039/c2jm33818a
日期:——
The synthesis of a diketopyrrolopyrrole (DPP)-based semiconducting polymer bearing thermocleavable side chains is described. This polymer can be converted into a native semiconductive polymer by thermal annealing at 200 °C. The resulting side chain-free polymer showed a good p-type semiconductor performance in organic thin film transistors.
Metal values, especially copper values, are extracted from aqueous solutions of metal salts containing halide or pseudo halide ions by a 1,2,4 triazole substitued in the 1- position by (1) a hydrocarbyl (alkyl) group or (2) a group of the formula --(X).sub.n --(CO--Y).sub.m where X is an optionally substituted methylene, vinylene or phenylene linking group or a linking group of formula --CO--A-- where A is an optionally substituted aromatic ortho linking group; n is 0 or 1; Y is OR.sub.2 or R.sub.3 where R.sub.2 and R.sub.3 are hydrocarbyl groups containing from 5 to 36 carbon atoms (preferably branched alkyl groups containing from 9 to 24 carbon atoms); and m is from 1 to 3.
Exploiting Excited-State Aromaticity To Design Highly Stable Singlet Fission Materials
作者:Kealan J. Fallon、Peter Budden、Enrico Salvadori、Alex M. Ganose、Christopher N. Savory、Lissa Eyre、Simon Dowland、Qianxiang Ai、Stephen Goodlett、Chad Risko、David O. Scanlon、Christopher W. M. Kay、Akshay Rao、Richard H. Friend、Andrew J. Musser、Hugo Bronstein
DOI:10.1021/jacs.9b06346
日期:2019.9.4
Baird's rule of excited state aromaticity to manipulate the singlet-triplet energy gap and create novel singlet fission candidates. We achieve this through the inclusion of a [4n] 5-membered heterocycle, whose electronic resonance promotes aromaticity in the triplet state, stabilizing its energy relative to the singlet excited state. Using this theory, we design a family of derivatives of indolonaphthyridine
Synthesis and Exciton Dynamics of Donor-Orthogonal Acceptor Conjugated Polymers: Reducing the Singlet–Triplet Energy Gap
作者:David M. E. Freeman、Andrew J. Musser、Jarvist M. Frost、Hannah L. Stern、Alexander K. Forster、Kealan J. Fallon、Alexandros G. Rapidis、Franco Cacialli、Iain McCulloch、Tracey M. Clarke、Richard H. Friend、Hugo Bronstein
DOI:10.1021/jacs.7b03327
日期:2017.8.16
approach to reduce the singlet-triplet energy gap in fully conjugatedpolymers, using a donor-orthogonal acceptor motif to spatially separate electron and hole wave functions. This new generation of conjugatedpolymers allows for a greatly reduced exchange energy, enhancing triplet formation and enabling thermallyactivateddelayedfluorescence. We find that the mechanisms of both processes are driven