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

Metal–organic frameworks (MOFs) are a unique class of crystalline solids comprised of metal cations (or metal clusters) and organic ligands that have shown promise for a wide variety of applications Over the past 15 years, research and development of these materials have become one of the most intensely and extensively pursued areas A very interesting and well-investigated topic is their optical emission properties and related applications Several reviews have provided a comprehensive overview covering many aspects of the subject up to 2011 This review intends to provide an update of work published since then and focuses on the photoluminescence (PL) properties of MOFs and their possible utility in chemical and biological sensing and detection The spectrum of this review includes the origin of luminescence in MOFs, the advantages of luminescent MOF (LMOF) based sensors, general strategies in designing sensory materials, and examples of various applications in sensing and detection

Luminescent metal–organic frameworks for chemical sensing and explosive detection

Aggregation-induced emission: phenomenon, mechanism and applications.

Sulphur-containing nonaromatic polymers: clustering-triggered emission and luminescence regulation by oxidation

Covalent immobilization of aggregation-induced emission luminogens in silica nanoparticles through click reaction.

Influences of processing methods and chemical treatments on fracture toughness of halloysite–epoxy composites

Low color temperature (CT) lighting sources such as candle light are of significant importance to human health owing to their remarkably low suppression effect on the secretion of melatonin, which helps people relax. As an alternative to hydrocarbon-burning candles, spark- and smog-free low CT organic light-emitting diodes (OLEDs) are highly desired. So far, however, low CT OLEDs are mainly fabricated by doping technology with several rare-metal complexes and multiple emissive layers. Metal-free and non-doped low CT OLEDs remain challenging due to the notorious aggregation-caused quenching (ACQ) effect of traditional chromophores. In this contribution, two luminogens, namely BPA2TPAN and BNA2TPAN, consisting of bisarylamine and two triphenylacrylonitrile (TPAN) units, were designed and synthesized. Both luminogens exhibit typical aggregation-induced emission (AIE) characteristics with high solid-state efficiency up to 47.7%. They also possess high thermal stability and outstanding morphological stability as well as obvious mechanochromism. Non-doped OLED devices of the luminogens show physiologically friendly orange light (603, 606 nm) with low CT values of 2093 and 1883 K, which are much lower than those of incandescent bulbs (2000–2500 K) or even candles (∼1900 K), whereas their doped OLED devices emit yellow light (551, 559 nm) with significantly improved performance, whose maximal power, current and external quantum efficiencies are 8.3 lm W−1, 12.2 cd A−1 and 4.2%, respectively. These results suggest that AIE luminogens are suitable to fabricate metal-free and non-doped low CT OLEDs with rational molecular design; meanwhile, their electroluminescence can be easily modulated through doping technology.

AIE-active, highly thermally and morphologically stable, mechanochromic and efficient solid emitters for low color temperature OLEDs

Triphenylamine (TPA)-based conjugated hyperbranched poly(aryleneethynylene)s (PAEs), hb-P1/2, hb-P1/3, and hb-P1/4, were synthesized with high molecular weights and good solubilities through Sonogashira coupling reactions. These PAEs exhibited outstanding thermal stabilities and different emission behaviors. Tetraphenylethene (TPE)-containing hb-P1/2 fluoresced faintly in THF, although its light emission was enhanced by aggregate formation in aqueous media or in thin films, thereby exhibiting an aggregation-induced emission-enhancement (AIEE) effect. Whereas 1,1,2,3,4,5-hexaphenylsilole (HPS)-bearing hb-P1/3 showed no significant change in emission intensity with increasing water content in aqueous media, hb-P1/4, which consisted of TPA-fluorenone donor-acceptor groups, presented almost identical absorptions, but both positive and negative solvatochromic emissions in various solvents. A superquenching effect was observed in the picric-acid-detection process by using nanosuspensions of hb-P1/2. All of the polymers possessed good film formability. UV irradiation of the thin films induced simultaneous photobleaching and cross-linking, thus making them applicable in the fabrication of 2D and 3D patterns. Furthermore, the polymer films also showed high refractive indices, which were tunable upon exposure to UV light.

Conjugated Hyperbranched Poly(aryleneethynylene)s: Synthesis, Photophysical Properties, Superquenching by Explosive, Photopatternability, and Tunable High Refractive Indices

Wang Zhang Yuan

Papers

Sulphur-containing nonaromatic polymers: clustering-triggered emission and luminescence regulation by oxidation

Covalent immobilization of aggregation-induced emission luminogens in silica nanoparticles through click reaction.

Influences of processing methods and chemical treatments on fracture toughness of halloysite–epoxy composites

AIE-active, highly thermally and morphologically stable, mechanochromic and efficient solid emitters for low color temperature OLEDs

Conjugated Hyperbranched Poly(aryleneethynylene)s: Synthesis, Photophysical Properties, Superquenching by Explosive, Photopatternability, and Tunable High Refractive Indices