The Cross-selectivity in Pd-catalyzed coupling of simple aryl C-H bonds DOI
Wenjun Lü

Synlett, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 30, 2024

Abstract Pd-catalyzed cross-couplings of C–H bonds have been pursued by researchers to produce unsymmetrical C–C directly for over 50 years. Such are currently prepared Suzuki, Kumada, Stille, Neigishi, Heck, or Sonogashira coupling C–halogen with C–M bonds. A big challenge is obtain high cross-selectivity cross-coupling products, especially when the substrates similar chemical bonds, such as simple arenes. Lu and co-workers studied Pd catalysis in aryl since 2003. This account introduces their strategy, understanding, research control, activation modes, establishment, discusses applications approach synthesis. 1 Introduction 2 Cross-Selectivity Control 3 Conclusion

Language: Английский

Synthetic progress of organic thermally activated delayed fluorescence emitters via C–H activation and functionalization DOI

Fan Ni,

Yipan Huang,

Longzhen Qiu

et al.

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(11), P. 5904 - 5955

Published: Jan. 1, 2024

Thermally activated delayed fluorescence (TADF) emitters have become increasingly prominent due to their promising applications across various fields, prompting a continuous demand for developing reliable synthetic methods access them. This review aims highlight the progress made in last decade synthesizing organic TADF compounds through C-H bond activation and functionalization. The begins with brief introduction basic features design principles of emitters. It then provides an overview advantages concise development transformations constructing Subsequently, it summarizes both transition-metal-catalyzed non-transition-metal-promoted used synthesis Finally, gives outlook on further challenges potential directions this field.

Language: Английский

Citations

9

Tetracyclic aromatic lactam-substituted tin-free donors for high-efficiency ternary organic solar cells via regulation of pre-aggregation and crystallization kinetics DOI
Bin Hu, Chenyang Zhang,

Xin Wang

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 489, P. 150968 - 150968

Published: April 2, 2024

Language: Английский

Citations

6

Spirobifluorene-based hole-transporting materials for RGB OLEDs with high efficiency and low efficiency roll-off DOI Creative Commons
Qian Li, Yusong Guo, Jingbo Lan

et al.

Chemical Science, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

In this work, we designed and synthesized three spirobifluorene (SBF)-based hole-transporting materials (HTMs) by incorporating the di-4-tolylamino group at different positions of SBF skeleton. These demonstrate excellent thermal stability with decomposition temperatures (

Language: Английский

Citations

5

Advances in Organic Materials for Next-Generation Optoelectronics: Potential and Challenges DOI Creative Commons
Ghazi Aman Nowsherwan, Qasim Ali, Usman Ali

et al.

Organics, Journal Year: 2024, Volume and Issue: 5(4), P. 520 - 560

Published: Nov. 11, 2024

This review provides a comprehensive overview of recent advancements in the synthesis, properties, and applications organic materials optoelectronics sector. The study emphasizes critical role development state-of-the-art optoelectronic devices such as solar cells, thin-film transistors, OLEDs. further examines structure, operational principles, performance metrics devices. Organic have emerged promising candidates due to their low-cost production potential for large-area or flexible substrate applications. Additionally, this highlights physical mechanisms governing properties high-performance materials, particularly photoinduced processes relevant charge carrier photogeneration. It discusses unique benefits over traditional inorganic including light weight, simple processing, flexibility. report delves into challenges related stability, scalability, performance, while highlighting wide range electronic exhibited by which are performances Furthermore, it addresses need research field achieve consistent across different types

Language: Английский

Citations

5

19.5% Efficiency organic solar cells enabled by a direct C–H arylation-derived wide-bandgap small-molecule guest donor DOI
Bin Hu,

Shenzheng Gao,

Xin Wang

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(20), P. 7803 - 7815

Published: Jan. 1, 2024

A tin-free asymmetric small-molecule guest donor ( o PhFO) with a wide bandgap allows PM6: PhFO:BTP-ec9 ternary OSCs to reach champion efficiency of 19.5% by optimizing blend morphology and vertical phase separation as well reducing energy loss.

Language: Английский

Citations

5

Crafting 1,4-diaryl spirobifluorene hosts in OLEDs via interannular C−H arylation: synergistic effects of molecular linearity and orthogonality DOI Creative Commons
Qian Shu Li, Zhiqian Yu, Qianhui Liu

et al.

Chemical Science, Journal Year: 2024, Volume and Issue: 15(27), P. 10547 - 10555

Published: Jan. 1, 2024

Design concept of introducing linear structure into orthogonal configuration is presented. To validate this concept, 1,4-diaryl spirobifluorenes are synthesized via interannular selective C–H arylation, proving to be excellent pure hydrocarbon hosts.

Language: Английский

Citations

4

Harnessing the enol/keto-form emission of ESIPT: mechanochromism, multi-channel imaging, and detection of a chemical warfare agent mimic DOI

Kangmin Wang,

Min Zhang,

Danni Yang

et al.

Science China Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Language: Английский

Citations

0

Ruthenium-catalyzed C–H bond activation and annulation of phenothiazine-3-carbaldehydes: facile access to dual-emission materials DOI Creative Commons
Junxiang Liu,

Kangmin Wang,

Liqiu Wan

et al.

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

A ruthenium-catalyzed C–H bond activation and annulation reaction efficiently constructed the structurally diverse pyrido[3,4- c ]phenothiazin-3-iums with anti-Kasha dual-emission TADF characteristics.

Language: Английский

Citations

0

Unveiling the Centrosymmetric Effect in the Design of Narrowband Fluorescent Emitters: From Single to Double Difluoroboron Cores DOI
Ge Yang, Junjie Liu, Yudong Yang

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 25, 2024

Narrowband fluorescent emitters are receiving significant attention due to the great potential for creating ultrahigh-definition organic light-emitting diode displays (UHD-OLED). Unveiling innovative mechanisms design new high-performance narrowband is a concerted endeavor in both academic and industrial circles. Theoretical calculations reveal that centrosymmetric dianilido-bipyridine boron difluoride framework (cs-DAPBF2) exhibits significantly reduced structural relaxation compared previously reported asymmetric structures with monofluoroboron cores, opportunities development of emitters. In this work, we present dual chelation-assisted C–H/C–H homocoupling strategy efficiently synthesize 3,3′-amino-2,2′-bipyridine skeleton, enabling straightforward construction series symmetric cs-DAPBF2-based Through molecular optimization, have developed green emitter, cs-DMeAPBF2-MP, which demonstrates narrow full width at half-maximum (fwhm) 20 nm, high photoluminescence quantum yield (ΦPL) 98%, large molar absorptivity (ε) 2.10 × 104 M–1 cm–1, horizontal dipole ratio (Θ//) 77%. These properties make cs-DMeAPBF2-MP promising candidate fabricating high-efficiency, diodes (OLEDs) minimal efficiency roll-off. This study represents first successful application DAPBF2 architecture OLEDs.

Language: Английский

Citations

3

Synthesis of Polycyclic Heteroarenes via Rh(III)-Catalyzed Twofold C-H Activation of 3-Aryl-2H-benzo[b][1,4]oxazines and Annulation with α-Diazo-β-ketoesters DOI

Yiyue Li,

Li Song,

Haokang Du

et al.

The Journal of Organic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 14, 2025

An efficient Rh(III)-catalyzed annulation between 3-aryl-2H-benzo[b][1,4]oxazines and α-diazo-β-ketoesters was developed, affording a series of polycyclic heteroarenes in moderate to excellent yields with good functional group compatibility. The procedure featured high efficiency, redox neutrality, twofold ortho-C-H activation, dual [4 + 2] annulation. Moreover, several important intermediates products have been isolated as powerful evidence for the proposed reaction mechanism.

Language: Английский

Citations

0