2020
DOI: 10.1002/anie.202011957
|View full text |Cite
|
Sign up to set email alerts
|

An Electroactive Pure Organic Room‐Temperature Phosphorescence Polymer Based on a Donor‐Oxygen‐Acceptor Geometry

Abstract: An electroactive room‐temperature phosphorescence (RTP) polymer has been demonstrated based on a characteristic donor‐oxygen‐acceptor geometry. Compared with the donor–acceptor reference, the inserted oxygen atom between donor and acceptor can not only decrease hole‐electron orbital overlap to suppress the charge transfer fluorescence, but also strengthen spin‐orbital coupling effect to facilitate the intersystem crossing and subsequent phosphorescence channels. As a result, a significant RTP is observed in so… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

3
73
0

Year Published

2021
2021
2024
2024

Publication Types

Select...
9

Relationship

1
8

Authors

Journals

citations
Cited by 73 publications
(76 citation statements)
references
References 44 publications
3
73
0
Order By: Relevance
“…In response to this problem, Wang et al are committed to constructing electroactive RTP polymer to make it suitable for the fabrication of high-efficiency polymer light-emitting diodes. By adopting the geometric configuration of D-O-A, they designed the polymer P-(DMPAc-O-TPTrz) (Scheme 4) [66] . Compared to the oxygen atom-free D-A system, the introduction of oxygen atoms has been shown to contribute to reducing hole-electron orbital overlap so that CT fluorescence could be suppressed, and enhanced spin-orbit coupling to promote efficient phosphorescence emission.…”
Section: Covalent Polymer Systemsmentioning
confidence: 99%
“…In response to this problem, Wang et al are committed to constructing electroactive RTP polymer to make it suitable for the fabrication of high-efficiency polymer light-emitting diodes. By adopting the geometric configuration of D-O-A, they designed the polymer P-(DMPAc-O-TPTrz) (Scheme 4) [66] . Compared to the oxygen atom-free D-A system, the introduction of oxygen atoms has been shown to contribute to reducing hole-electron orbital overlap so that CT fluorescence could be suppressed, and enhanced spin-orbit coupling to promote efficient phosphorescence emission.…”
Section: Covalent Polymer Systemsmentioning
confidence: 99%
“…36 In Figure 4, the anthracene dye (ENDT) was synthesized with weak fluorescence emission at 625 nm. The multi-stage assembly process which resulted from CB [8] and amphiphilic sulfonatocalix [4]arene(SC4AD) greatly improved the luminescence and caused the emission to red shift. First-stage emission enhancement came from macrocyclic host CB [8], the "1:2" and "head-to-tail" binding forms contributed to the linear supramolecular polymer, and this slightly enhanced red-shifted (655 nm) fluorescence.…”
Section: Phosphorescence In Aqueous Solutionmentioning
confidence: 99%
“…The development of purely organic room-temperature phosphorescence materials has received widespread attention owing to its potential applications in anticounterfeiting, 5 biological imaging, 6,7 and optoelectronic materials. 8 Traditionally, organic molecules cannot emit phosphorescence at room temperature or in aqueous solution because of intrinsically weak spin−orbit coupling, which means that excitons could not effectively cross the single state and triplet state. 9 That is, effective phosphorescence emission requires two conditions: one is fast and efficient intersystem crossing (ISC), which means that it facilitates singlet excitons to populate the triplet state, and the other one is slow k nr , which means that it protects the energy of the triplet state from quenching.…”
Section: Introductionmentioning
confidence: 99%
“…Room-temperature phosphorescence (RTP) materials with ultralong emission lifetime (>0.1 s) have received considerable attention recently owing to their promising applications in varying fields, including sensing, 1–4 imaging, 5,6 data encryption, 7,8 and organic electronics. 9–11 Unlike most phosphors based on organometallic complexes containing noble metals, metal-free phosphors are rare due to the slow intersystem crossing (ISC) process and serious non-radiative relaxation of triplet excitons under ambient conditions (in air and at room temperature). 12,13 Therefore, various strategies to achieve persistent RTP materials have been developed to promote the ISC process by introduction of heavy atoms (Br, I), 14–17 heteroatoms (N, O, S, P, and so on) 18 or aromatic carbonyl groups, 3,19–23 and to suppress the non-radiative decay process by crystallization engineering, 5,22,24–28 embedding into rigid polymer matrix 3,8,29–31 and formation of supramolecular host–guest complexes.…”
Section: Introductionmentioning
confidence: 99%