Hybridized Local(混合局部)研究综述
Hybridized Local 混合局部 - These photophysical behaviors have been fully revealed via X-ray diffraction analysis and theoretical calculations, and thus attributed to the hybridized local and charge-transfer (HLCT) states and increased spin-orbital coupling (SOC) strength by mixed n → π* and π → π* transitions involving heteroatom lone pairs and the π-conjugated skeleton, respectively. [1] Donor–spacer–acceptor (D–π–A) materials CAPI and CCAPI, with hybridized local and charge transfer (HLCT) emissive states, have been synthesized. [2] Here, we report a high-quality UV emitter with hybridized local and charge-transfer (HLCT) excited state and its application in UV OLEDs. [3] Designing molecule based on donor–acceptor (D-A) structure with a hybridized local and charge transfer (HLCT) excited state is a appealing strategy for providing an efficient OLED with high external quantum efficiency through efficacious exciton utilization. [4] Herein, through modulation of electron donors and introduction of phenyl rings as π spacers, we present three pure organic fluorophores (BCz, BTCz and BPTCz) with the hybridized local and charge-transfer (HLCT) excited state feature for OLED fabrication. [5] Organic molecules with hybridized local and charge transfer (HLCT) character have attracted attention because of their potential in the field of two-photon fluorescence imaging and light-emitting diode (LED). [6] A hybridized local and an intramolecular charge‐transfer excited state is demonstrated to afford high photoluminescence efficiency of these D–A molecules in solution (≈100%). [7] We proposed that from crystal to amorphous aggregates, the distorted BF2bdk group caused by the weakened intermolecular B–F⋯H–C hydrogen bonds convert the T1 from hybridized local and charge transfer to locally excited states. [8] Herein, two anthracene derivatives, PIAnTPh and PyIAnTPh, with a hybridized local and charge transfer (HLCT) excited state are obtained by attaching the large periphery groups of phenanthroimidazole/pyrenoimidazole and terphenyl unit to the 9,10-positions of anthracene. [9] Twisted combined rigid structures with hybridized local and charge-transfer (HLCT) state properties enable them to achieve excellent OLED performance. [10] Results of systematic photophysical measurements indicated PBTPA to exhibit AIE trending, manifesting as aggregation-induced enhanced emission and the characteristics of hybridized local and charge transfer (HLCT) states. [11] Two luminophors exhibit deep-red fluorescence with high photoluminescence quantum yields (PLQYs) as a result of the formation of a hybridized local and charge-transfer (HLCT) excited state. [12] In this work, a novel deep blue molecule based on hybridized local and charge-transfer (HLCT) excited state was reported with the emission wavelength of 423 nm. [13] The current status of blue light-emitting material design with emission mechanisms such as fluorescence (F), phosphorescence (Ph), thermally activated delayed fluorescence (TADF), and hybridized local and charge transfer (HLCT) is introduced in the first part of this review. [14] The reported organic light-emitting diodes (OLEDs) based on hybridized local and charge-transfer (HLCT) state emitters mostly exhibit low photoluminescence quantum yields (PLQYs) in aggregates, failing to achieve optimal device efficiency although they exhibit good exciton utilization efficiencies (EUEs). [15] We observed that the dual-band operation originates from the excitation of hybridized localized surface plasmons on top and bottom faces of the disks along with the mutual coupling from the adjacent particle. [16] Herein, we designed and synthesized three donor-acceptor (D-A) structure compounds based on a strong spin orbit coupling (SOC) acceptor benzo[a, c]phenazine (DPPZ) to research on the three typical types of excited states, namely, the locally-excited (LE) dominated excited state (CZP-DPPZ), the hybridized local and charge-transfer (HLCT) state (TPA-DPPZ), and the charge-transfer (CT) dominated state with TADF characteristics (PXZ-DPPZ). [17] As a result, DTPS-PT exhibits NIR emissions from an LE involved in hybridized local and charge transfer (HLCT) states, showing a 79% high fluorescence quantum yield in the low polar solvent tetrachloromethane. [18] In this work, a multiscale simulation is performed to study the photophysical properties of the reported compound 4,4′-(naphtho[2,3-c][1,2,5]thiadiazole-4,9-diyl)bis(N,N-diphenylaniline) (NZ2TPA) and a theoretically designed promising compound 4,4′-(naphtho[2,3-c][1,2,5]oxadiazole-4,9-diyl)bis(N,N-diphenylaniline) (NO2TPA), which both possess unique features of near-infrared (NIR) emission, aggregation induced emission and hybridized local and charge transfer (HLCT) excited states. [19] Furthermore, the large dihedral angles promote the formation of hybridized local and charge-transfer states in these molecules. [20] The photophysical properties revealed that the lowest excited state (S1) of TPA-PPI-OH is a hybridized local and charge-transfer excited state; thus, TPA-PPI-OH could show high fluorescence efficiencies in various solvents (50% even in acetonitrile). [21] The hybridized local and charge-transfer excited state (HLCT) is a promising strategy to achieve deep-blue emission and high photoluminescence quantum yield. [22] Two red fluorophores (TPABTPA and TPABCHO) with hybridized local and charge-transfer (HLCT) properties were systematically studied. [23] A new family of hybridized local and charge-transfer (HLCT) emitters bearing a pyrene structural unit has been developed. [24] The UV/vis absorption spectra and density functional theory calculations showed that the lowest electronic transition of the semi-aliphatic hyperbranched polyimide is hybridized local and charge transfer transition, whereas the lowest electronic transition of aromatic hyperbranched polyimides is charge transfer transition. [25] Herein, a series of novel fluorophores with strong NIR emission, hybridized local and charge transfer characteristics, good two-photon absorption, high photostability, low dark cytotoxicity and excellent ROS generation ability are developed. [26] Nowadays, neutral luminescent radicals have become a competitive material system compared with other materials such as thermally activated delayed fluorescence (E-type delayed fluorescence) [4] and hybridized local and chargetransfer excited state [5]. [27] Recently, the fluorescent emitters with a hybridized local and charge transfer (HLCT)-excited state have attracted significant interest in developing high-efficiency organic light-emitting diodes. [28]这些光物理行为已通过 X 射线衍射分析和理论计算充分揭示,因此归因于混合的局部和电荷转移 (HLCT) 状态以及通过混合 n → π* 和 π 增加的自旋轨道耦合 (SOC) 强度→ π* 跃迁分别涉及杂原子孤对和 π 共轭骨架。 [1] 已经合成了具有杂化局部和电荷转移 (HLCT) 发射态的供体-间隔体-受体 (D-π-A) 材料 CAPI 和 CCAPI。 [2] 在这里,我们报告了一种具有混合局部和电荷转移 (HLCT) 激发态的高质量 UV 发射器及其在 UV OLED 中的应用。 [3] 设计基于具有混合局部和电荷转移 (HLCT) 激发态的供体-受体 (D-A) 结构的分子是一种有吸引力的策略,可通过有效的激子利用提供具有高外部量子效率的高效 OLED。 [4] 在此,通过调节电子供体和引入苯环作为 π 间隔体,我们提出了三种纯有机荧光团(BCz、BTCz 和 BPTCz),它们具有用于 OLED 制造的杂化局部和电荷转移 (HLCT) 激发态特征。 [5] 具有杂化局部和电荷转移(HLCT)特性的有机分子因其在双光子荧光成像和发光二极管(LED)领域的潜力而备受关注。 [6] 杂化的局部和分子内电荷转移激发态被证明可以在溶液中提供这些 D-A 分子的高光致发光效率(≈100%)。 [7] 我们提出从晶体到无定形聚集体,由减弱的分子间 B-F⋯H-C 氢键引起的扭曲 BF2bdk 基团将 T1 从杂化的局部和电荷转移转变为局部激发态。 [8] 在此,通过将菲并咪唑/芘咪唑和三联苯单元的大外围基团连接到蒽的 9,10 位上,获得了两种具有杂化局部和电荷转移 (HLCT) 激发态的蒽衍生物 PIAnTPh 和 PyIAnTPh。 [9] 具有混合局部和电荷转移 (HLCT) 状态特性的扭曲组合刚性结构使它们能够实现出色的 OLED 性能。 [10] 系统的光物理测量结果表明 PBTPA 表现出 AIE 趋势,表现为聚集诱导的增强发射和杂化局部和电荷转移 (HLCT) 状态的特征。 [11] 由于形成混合的局部和电荷转移 (HLCT) 激发态,两种发光体呈现出具有高光致发光量子产率 (PLQY) 的深红色荧光。 [12] 在这项工作中,报道了一种基于混合局部和电荷转移 (HLCT) 激发态的新型深蓝色分子,其发射波长为 423 nm。 [13] 本文第一部分介绍了具有荧光(F)、磷光(Ph)、热激活延迟荧光(TADF)和杂化局部和电荷转移(HLCT)等发射机制的蓝光材料设计现状。审查。 [14] 已报道的基于混合局部和电荷转移 (HLCT) 态发射器的有机发光二极管 (OLED) 在聚合中大多表现出低光致发光量子产率 (PLQY),尽管它们表现出良好的激子利用效率 (EUE),但未能实现最佳器件效率)。 [15] 我们观察到双波段操作源于圆盘顶面和底面上杂交局部表面等离子体的激发以及来自相邻粒子的相互耦合。 [16] 在此,我们设计并合成了三种基于强自旋轨道耦合(SOC)受体苯并[a,c]吩嗪(DPPZ)的供体-受体(D-A)结构化合物,以研究三种典型的激发态,即局部激发 (LE) 主导的激发态 (CZP-DPPZ)、混合的局部和电荷转移 (HLCT) 态 (TPA-DPPZ) 以及具有 TADF 特征的电荷转移 (CT) 主导态 (PXZ-DPPZ) . [17] 因此,DTPS-PT 表现出来自 LE 的 NIR 发射,涉及混合局部和电荷转移 (HLCT) 状态,在低极性溶剂四氯甲烷中显示出 79% 的高荧光量子产率。 [18] 在这项工作中,进行了多尺度模拟以研究报道的化合物 4,4'-(naphtho[2,3-c][1,2,5]thiadiazole-4,9-diyl)bis(N) 的光物理性质,N-diphenylaniline) (NZ2TPA) 和理论上设计的有前景的化合物 4,4'-(naphtho[2,3-c][1,2,5]oxadiazole-4,9-diyl)bis(N,N-diphenylaniline) ) (NO2TPA),它们都具有近红外 (NIR) 发射、聚集诱导发射和杂化局部和电荷转移 (HLCT) 激发态的独特特征。 [19] 此外,大的二面角促进了这些分子中杂化局部和电荷转移状态的形成。 [20] 光物理性质表明TPA-PPI-OH的最低激发态(S1)是杂化的局部和电荷转移激发态;因此,TPA-PPI-OH 可以在各种溶剂中显示出高荧光效率(即使在乙腈中也可以达到 50%)。 [21] 杂化局部和电荷转移激发态(HLCT)是实现深蓝色发射和高光致发光量子产率的一种有前途的策略。 [22] 系统地研究了两种具有杂交局部和电荷转移 (HLCT) 特性的红色荧光团(TPABTPA 和 TPABCHO)。 [23] 已开发出一种新的带有芘结构单元的混合局部和电荷转移 (HLCT) 发射器家族。 [24] 紫外/可见吸收光谱和密度泛函理论计算表明,半脂肪族超支化聚酰亚胺的最低电子跃迁是杂化的局部和电荷转移跃迁,而芳族超支化聚酰亚胺的最低电子跃迁是电荷转移跃迁。 [25] 在此,开发了一系列具有强近红外发射、杂化局部和电荷转移特性、良好的双光子吸收、高光稳定性、低暗细胞毒性和优异的活性氧生成能力的新型荧光团。 [26] 如今,与热激活延迟荧光(E型延迟荧光)[4]和杂化局部和电荷转移激发态[5]等其他材料相比,中性发光自由基已成为一种具有竞争力的材料体系。 [27] 最近,具有混合局部和电荷转移(HLCT)激发态的荧光发射器在开发高效有机发光二极管方面引起了极大的兴趣。 [28]
reverse intersystem crossing 反向系统间交叉
More importantly, the introduction of an extra cyano group of 3,6-T2C facilitated a fine modulation of hybridized local and charge-transfer (HLCT) excited state with a crossed dipole of CT transition and an energy favorable high-lying reverse intersystem crossing (RISC), which contributed to a more stable photoluminescence (PL) and EUE than the 3,6-TC. [1] Rod-shaped oligo(p-phenyleneethynylene) (OPE) offers an attractive π-framework for the development of solution-processable highly fluorescent molecules having tunable hybridized local and charge transfer (HLCT) excited states and (reverse) intersystem crossing ((R)ISC) channels. [2] Hybridized local and charge-transfer (HLCT) excited state fluorophores, which enable full exciton utilization through a reverse intersystem crossing from high-lying triplet states to singlet state,. [3]更重要的是,引入额外的 3,6-T2C 氰基促进了杂化局部和电荷转移 (HLCT) 激发态的精细调制,具有 CT 跃迁的交叉偶极子和能量有利的高位反向系间交叉。 RISC),这有助于产生比 3,6-TC 更稳定的光致发光 (PL) 和 EUE。 [1] 棒状低聚(对苯撑乙炔基)(OPE)为开发具有可调杂化局部和电荷转移(HLCT)激发态和(反向)系统间交叉((R) ISC) 频道。 [2] nan [3]
charge transfer excited 电荷转移激发
Herein, a new asymmetric donor-spiro-acceptor type hybridized local and charge-transfer excited state (HLCT) compound based on benzothiadiazole derivative (2P-BT) moiety, Spiro-2P-BT-TPA, was designed and synthesized. [1] Hybridized local and charge-transfer excited state (HLCT) is an excited state formed by the re-interaction of the intrinsic locally-excited (LE) state and charge-transfer (CT) state. [2]在此,设计并合成了一种基于苯并噻二唑衍生物(2P-BT)部分的新型不对称供体-螺受体型杂化局部和电荷转移激发态(HLCT)化合物,Spiro-2P-BT-TPA。 [1] 杂化局部和电荷转移激发态(HLCT)是由本征局部激发(LE)态和电荷转移(CT)态重新相互作用形成的激发态。 [2]
organic light emitting 有机发光
The organic light-emitting diode (OLED) devices with 6a and 6c as emitters were fabricated, both of which exhibit hybridized local and charge transfer (HLCT) excited-state characters with high external quantum efficiencies (EQEs) of 4. [1] The fluorescent molecules utilizing hybridized local and charge-transfer (HLCT) state as potential organic light-emitting diodes materials attract extensive attention due to their high exciton utilization. [2]制造了以 6a 和 6c 作为发射器的有机发光二极管 (OLED) 器件,它们都表现出混合局部和电荷转移 (HLCT) 激发态特性,具有 4 的高外部量子效率 (EQE)。 [1] 利用杂化局部和电荷转移(HLCT)态作为潜在有机发光二极管材料的荧光分子由于其高激子利用率而受到广泛关注。 [2]
thermally activated delayed 热激活延迟
Our experimental study of AnB4Ph excludes the possibility of triplet-triplet annihilation, hybridized local and charge transfer, or thermally activated delayed fluorescent characteristics of the material. [1]我们对 AnB4Ph 的实验研究排除了三重态-三重态湮灭、杂化局部和电荷转移或材料的热激活延迟荧光特性的可能性。 [1]
hybridized local excitation
Further, using time-dependent density functional theory (TD-DFT) calculations it turned out that the donor - acceptor groups at both ends and -C=C- linker imposes a hybridized local excitation charge transfer (HLCT) with the terminal –COOH group could serve to bind targeted analytes having –NH2 or –OH group. [1] Recently, a type of synthetic highly efficient OLED molecule based on a hybridized local excitation and charge transfer (HLCT) character has received much attention as a potential high-efficiency fluorescent OLED material. [2]此外,使用随时间变化的密度泛函理论 (TD-DFT) 计算结果表明,两端的供体-受体基团和 -C=C- 接头对末端 -COOH 基团施加了杂化的局部激发电荷转移 (HLCT)可用于结合具有 –NH2 或 –OH 基团的目标分析物。 [1] 最近,一种基于混合局部激发和电荷转移(HLCT)特性的合成高效OLED分子作为一种潜在的高效荧光OLED材料备受关注。 [2]