다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

Ju Mei,†,‡,∥ Nelson L. C. Leung,†,‡,∥ Ryan T. K. Kwok,†,‡ Jacky W. Y. Lam,†,‡ and Ben Zhong Tang*,†,‡,§ †HKUST-Shenzhen Research Institute, Hi-Tech Park, Nanshan, Shenzhen 518057, China ‡Department of Chemistry, HKUST Jockey Club Institute for Advanced Study, Institute of Molecular Functional Materials, Division of Biomedical Engineering, State Key Laboratory of Molecular Neuroscience, Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China Guangdong Innovative Research Team, SCUT-HKUST Joint Research Laboratory, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China

Aggregation-Induced Emission: Together We Shine, United We Soar!

Luminogenic materials with aggregation-induced emission (AIE) attributes have attracted much interest since the debut of the AIE concept in 2001. In this critical review, recent progress in the area of AIE research is summarized. Typical examples of AIE systems are discussed, from which their structure–property relationships are derived. Through mechanistic decipherment of the photophysical processes, structural design strategies for generating new AIE luminogens are developed. Technological, especially optoelectronic and biological, applications of the AIE systems are exemplified to illustrate how the novel AIE effect can be utilized for high-tech innovations (183 references).

Aggregation-induced emission

"United we stand, divided we fall."--Aesop. Aggregation-induced emission (AIE) refers to a photophysical phenomenon shown by a group of luminogenic materials that are non-emissive when they are dissolved in good solvents as molecules but become highly luminescent when they are clustered in poor solvents or solid state as aggregates. In this Review we summarize the recent progresses made in the area of AIE research. We conduct mechanistic analyses of the AIE processes, unify the restriction of intramolecular motions (RIM) as the main cause for the AIE effects, and derive RIM-based molecular engineering strategies for the design of new AIE luminogens (AIEgens). Typical examples of the newly developed AIEgens and their high-tech applications as optoelectronic materials, chemical sensors and biomedical probes are presented and discussed.

Aggregation-Induced Emission: The Whole Is More Brilliant than the Parts

Pyrene-based materials for organic electronics.

A green top-emitting quantum-dot light-emitting diode (TQLED) with conventional structure is demonstrated in this study with all its functional layers, including hole transportation layer, emitting layer and electron transportation layer, fabricated by spin-coating processes This green QLED exhibits an external quantum efficiency (EQE) of 64 % and a maximum brightness of 200000 cd/m2 , which is the highest values reported for green TQLEDs in literature Besides, this is the first report of all-solution-processed TQLEDs

13‐3: Top‐emitting Quantum‐dot Light‐emitting Diodes with all the p‐i‐n Functional Layers Deposited by Solution Processes

Light-matter interaction can affect the radiative decay rate of excitons and thus the emission quantum yield (QY) of quantum dots (QDs). In this work, light-matter interaction and outcoupling efficiency of QD light-emitting diodes with different structures are investigated experimentally and theoretically. We show that the external quantum efficiency (EQE) of top-emitting devices is higher than that of the bottom-emitting devices, which is mainly due to the stronger light-matter interaction and higher light outcoupling efficiency of the top-emitting structures. In addition, we show that the QY enhancement induced by light-matter interaction is more significant for low-QY QDs. Our results suggest that top-emitting structures are more powerful for improving the EQE of devices built with low-QY QDs.

Influence of Light-Matter Interaction on Efficiency of Quantum-Dot Light-Emitting Diodes.

The effect of the cathode work-function on the performance of colloidal quantum-dot light-emitting diodes (QD-LEDs) is investigated in this work. In typical QD-LEDs, electron injection is more efficient than the hole-injection. The imbalance of carrier injection leads to a low device performance because the excess electrons, either charging the QDs and consequently enhancing the nonradiative Auger recombination, or leaking to the counter electrode without recombination, greatly reduces the efficiency of the devices. By using cathode with high work-function such as copper (Cu), electron injection is more difficult. As a result, the charge balance in QD-LEDs is greatly improved, which consequently enhances the efficiency of the devices. At a luminance of 1000 cd m−2, devices with Cu cathode exhibit a current efficiency of 10.4 cd A−1 and an external quantum efficiency of 6.9%, which is remarkably higher than that of 5.7 cd A−1 and 3.8% for the devices with Al cathode.

Improving charge balance in quantum-dot light-emitting diodes by using copper cathode

We report a newly synthesized wide band-gap material 4, 4′-bis (1, 2, 2-triphenylvinyl) biphenyl (BTPE), which can serve as blue emitter directly or as host for fluorescent green and red dyes. By employing BTPE as host and/or emitter, efficient red, green, blue and white OLEDs show a maximum current efficiency of 5 cd/A, 18 cd/A, 7.1 cd/A and 7 cd/A, respectively.

P-165: Efficient RGBW OLEDs Based on 4, 4'-Bis (1, 2, 2-triphenylvinyl) biphenyl

Blue OLEDs with narrow bandwidth using CF3 substituted bis((carbazol-9-yl)phenyl)amines as emitters: Structural regulation of linker between donor and acceptor in chromophores

Shuming Chen

Papers

13‐3: Top‐emitting Quantum‐dot Light‐emitting Diodes with all the p‐i‐n Functional Layers Deposited by Solution Processes

Influence of Light-Matter Interaction on Efficiency of Quantum-Dot Light-Emitting Diodes.

Improving charge balance in quantum-dot light-emitting diodes by using copper cathode

P-165: Efficient RGBW OLEDs Based on 4, 4'-Bis (1, 2, 2-triphenylvinyl) biphenyl

Blue OLEDs with narrow bandwidth using CF3 substituted bis((carbazol-9-yl)phenyl)amines as emitters: Structural regulation of linker between donor and acceptor in chromophores