88964-95-8Relevant academic research and scientific papers
Donor–σ–Acceptor Motifs: Thermally Activated Delayed Fluorescence Emitters with Dual Upconversion
Geng, Yan,D'Aleo, Anthony,Inada, Ko,Cui, Lin-Song,Kim, Jong Uk,Nakanotani, Hajime,Adachi, Chihaya
, p. 16536 - 16540 (2017)
A family of organic emitters with a donor–σ–acceptor (D-σ-A) motif is presented. Owing to the weakly coupled D-σ-A intramolecular charge-transfer state, a transition from the localized excited triplet state (3LE) and charge-transfer triplet state (3CT) to the charge-transfer singlet state (1CT) occurred with a small activation energy and high photoluminescence quantum efficiency. Two thermally activated delayed fluorescence (TADF) components were identified, one of which has a very short lifetime of 200–400 ns and the other a longer TADF lifetime of the order of microseconds. In particular, the two D-σ-A materials presented strong blue emission with TADF properties in toluene. These results will shed light on the molecular design of new TADF emitters with short delayed lifetimes.
Double-anthracene D-delta-A type dark blue organic fluorescent material, and preparation method and application thereof
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Paragraph 0051; 0075; 0078, (2020/07/15)
The invention relates to a double-anthracene D-delta-A type dark blue organic fluorescent material, and a preparation method and an application thereof. The structural formula of the material is shownin the specification; and in the formula, R1 is an elec
CHARGE TRANSPORT MATERIAL, COMPOUND, AND ORGANIC LIGHT-EMITTING ELEMENT
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Paragraph 0101-0102, (2021/01/22)
A charge transport material containing a compound represented by the following formula (1). R1 and R2 each are a fluoroalkyl group, Ar1 and Ar2 each are an aromatic ring, A1 and A2 each are an aryl group substituted with a group having a positive Hammett σp value or with a phenyl group, or are a substituted or unsubstituted heteroaryl group bonding to Ar1 or Ar2 via a carbon atom, n1 and n2 each are a natural number.
Organic blue fluorescent material and preparation method and application thereof
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Paragraph 0046; 0065-0073, (2019/02/10)
The invention relates to an organic blue fluorescent material and a preparation method and application thereof. The material adopts a delta bond as a bridge chain to connect two anthracene molecule luminescence units and regulate the conjugation state of organic molecules; meanwhile, a steric hindrance group is introduced onto the delta bond to inhibit a pi-pi accumulation effect among the organicmolecules, and correspondingly the organic blue fluorescent material is prepared and has high thermal stability and high luminous quantum efficiency. The specific preparation method and application mainly include the steps of adopting 9-benzanthracene-10 borate and 4,4'-dibromo diphenyl bis-substituted methane for conducting a Suzuki coupling reaction to prepare the organic blue fluorescent material. The material is adopted as a luminous layer and achieves a non-doped deep blue OLED device with high performance.
Substituted silyl-terminated compounds and polymers thereof
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, (2008/06/13)
Polymer-ceramic networks in which the polymer chain is anchored in a ceramic network are formed from compounds of the formula STR1 where X is R', OR', OH, H, Cl, or Br, X is R', OR', Cl, or Br, R' is an alkyl group having 1 to 8 carbon atoms, and R is sel
