Semiconducting polymers {promise|guarantee} to revolutionise the way electronic devices {can be|may be|could be|might be|is often|is usually} {built|constructed} and deployed {for a|to get a|for any} vast array of applications ranging from light-energy conversion to sensors to thermoelectric generators. Conjugated push-pull copolymers consisting of alternating donor and acceptor moieties are {at the|in the} heart {of these|of those} applications, {due to|because of|as a result of|on account of|resulting from|as a consequence of} the {large|big|huge|massive|substantial|significant} tunability of their electronic structure. {Hence|Therefore}, {knowing|understanding|realizing|being aware of|figuring out|recognizing} the repeat unit and {thus|therefore|hence|as a result} the chromophore {of these|of those} {materials|supplies|components} {is essential|is crucial} {for a|to get a|for any} detailed understanding {of the|from the|in the|on the|with the|of your} structure–function {relationship|partnership|connection} of conjugated polymers {used|utilized|employed|utilised|applied|made use of} in organic electronics applications. {Therefore|Consequently|As a result|For that reason|Thus|Hence}, spectroscopic tools {providing|supplying|offering|delivering|giving} the {necessary|essential|required|needed|important|vital} molecular resolution that {allows|enables|permits|makes it possible for} to discriminate {between|in between|among|amongst|involving} {different|various|distinct|diverse|unique|distinctive} {building|developing|creating|constructing} blocks and to {decide|determine|choose|make a decision} which {one|1|a single|one particular} {actually|really|truly|in fact|essentially|basically} resembles the electronic structure {of the|from the|in the|on the|with the|of your} polymer are of utmost {importance|significance|value}. Time-resolved electron paramagnetic resonance (TREPR) spectroscopy is {both|each}, {perfectly|completely} suited for this {task|job|activity|process} and clearly superior to optical spectroscopy, {particularly|especially|specifically} when supported by quantum-chemical calculations. {This is|This really is|This can be|That is} {due to|because of|as a result of|on account of|resulting from|as a consequence of} its molecular resolution and {unique|distinctive|special|exclusive|exceptional|one of a kind} capability of {using|utilizing|making use of|employing|working with|applying} light-induced triplet states to probe the electronic structure {as well|also|too|at the same time} {as the|because the} {impact|influence|effect} {of the|from the|in the|on the|with the|of your} {local|nearby|neighborhood|regional} {environment|atmosphere}. {Here|Right here}, we demonstrate the {power|energy} of this {approach|method|strategy} for the polymer PNDIT2 (poly{[N,N’-bis(2-octyldodecyl)-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5,5′-(2,2′-bithiophene)}) revealing NDI-T2 unambiguously {as the|because the} “true” repeat unit {of the|from the|in the|on the|with the|of your} polymer, representing the chromophore. The {alternative|option} {building|developing|creating|constructing} block T-NDI-T {has a|features a|includes a} markedly {different|various|distinct|diverse|unique|distinctive} electronic structure. These {results|outcomes|final results|benefits} are of {high|higher} {importance|significance|value} for the rational {design|style|design and style} of conjugated polymers for organic electronics applications. 190792-74-6 Data Sheet 1222174-93-7 manufacturer PMID:23996047
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