Article
Optics
Zhiqin Yang, Youkui Zheng, Jie Ma, Jingkai Jiao, Xiaonan Wang, Yue Li, Yingfan Niu, Bo Wang, Jing Zhu
Summary: In this study, a yellow-emitting material was synthesized by incorporating trivalent dysprosium with lithium yttrium phosphate (LYP). The crystallographic sites of the introduced Dy3+ activators were determined through various analyses. It was found that the material exhibited bright yellow emission under excitation, with luminescence quenching occurring at high Dy3+ content due to dipole-dipole interaction. The material also showed excellent thermal stability and resistance to color shifting. The results indicate that LYP:Dy3+ is a promising candidate for solid-state illumination applications.
JOURNAL OF LUMINESCENCE
(2024)
Article
Chemistry, Physical
Yarong Gu, Xuening Sun, Min Wu, Kai Wang
Summary: The incorporation of mechanochromic luminescence into TADF molecules is a promising strategy for developing multifunctional mechanochromic luminescent materials. In this work, the delayed fluorescence lifetime of 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene crystals was found to be continuously shortened with increasing pressure. The study developed a new function of TADF molecules and provided a route to shorten the delayed fluorescence lifetime, which is beneficial for designing TADF-OLEDs with small efficiency roll-off.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Applied
Chunfang Liu, Chunming Yuan, Guangjin Shi, Ke Jia, Jing Liu, Kun-Peng Wang, Shaojin Chen, Zhi-Qiang Hu
Summary: Chiral organic fluorescent materials with helicene moiety derived from binaphthanol structure exhibited excellent chiroptical performance. These compounds demonstrated aggregation-enhanced emission properties and strong blue emission in solid state. The twisted molecular structures of these compounds limited the stacking of adjacent molecules in solid state, resulting in their excellent fluorescent properties.
Article
Multidisciplinary Sciences
Xin-Yue Lou, Nan Song, Ying-Wei Yang
Summary: This study reports the construction of a pillar[5]arene-based dual-ligand hybrid material with tunable luminescent properties and ion-sensing abilities. The material exhibits optimized luminescence, tunable multicolor emission induced by external stimuli, and great application potential.
NATIONAL SCIENCE REVIEW
(2021)
Review
Chemistry, Inorganic & Nuclear
Wenjun Xu, Fanhao Zeng, Qiurui Han, Zhili Peng
Summary: In this review, recent developments in the preparation and application of solid-state emissive carbon dots are summarized and discussed. The advantages, challenges, and prospects of solid-state emissive carbon dots are also proposed.
COORDINATION CHEMISTRY REVIEWS
(2024)
Article
Chemistry, Organic
Xiaohui Wang, Jianyu Zhang, Xiaoyu Mao, Yiwei Liu, Ruikuan Li, Jie Bai, Jun Zhang, Carl Redshaw, Xing Feng, Ben Zhong Tang
Summary: This study presents an efficient strategy for achieving highly efficient solid-state dual-emission blue emitters through hydrogen bonds and novel pyrene-based intermediates. The resulting luminescent materials display high thermal stability, blue emission, and high quantum yields in solution.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Takashi Hakari, Shunsuke Yoshimi, Kenji Nagao, Atsushi Sakuda, Masahiro Tatsumisago, Akitoshi Hayashi
Summary: A highly deformable lithium-ion conducting oxide solid electrolyte was studied to enhance the electrochemical performance of all-solid-state capacitors. By incorporating this solid electrolyte between electrode layers, low resistance and improved capacitance were achieved.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Multidisciplinary
Ondrej Mrozek, Mousree Mitra, Bejamin Hupp, Andrey Belyaev, Nora Luedtke, Dorothee Wagner, Cui Wang, Oliver S. Wenger, Christel M. Marian, Andreas Steffen
Summary: This article reports a dimeric Zn-II carbene complex with bridging and chelating benzene-1,2-dithiolate ligands, which is highly stable towards air and water. The complex exhibits visible light emission in the solid state, solution, and polymer matrices, with a maximum wavelength between 577-657 nm. It also shows unusually high radiative rate constants for triplet exciton decay at room temperature. The efficient thermally activated delayed fluorescence (TADF) of the complex is attributed to a small energy gap between the (LL)-L-1/3/LMCT states. Time-resolved luminescence and transient absorption studies confirm the presence of long-lived, dominantly ligand-to-ligand charge transfer excited states in solution, allowing for application in Dexter energy transfer photocatalysis.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Physical
Pan Hong, Nuo-Hua Xie, Kai Xiong, Jing Liu, Ming-Qiang Zhu, Chong Li
Summary: A visible-light-driven solid-state near-infrared fluorescent bistable molecular switch TDI-4(DTE-TPE) was constructed by covalently coupling aggregation-induced emissive tetraphenylethylene (TPE), photochromic dithienylethene (DTE), and NIR emissive terrylene diimide (TDI). This molecule exhibits enhanced NIR emission in the solid state and can switch between fluorescent and non-fluorescent states under visible light irradiation.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Analytical
Jing-Jing Hu, Wenlian Jiang, Qing Chen, Rui Liu, Xiaoding Lou, Fan Xia
Summary: The use of ionic current and fluorescent dual-signal-output nanochannels for detecting specific target species has gained attention. Introducing an optical signal can improve detection system selectivity and observe reductions in ionic current from stimulus-triggered nanochannel changes. By employing a biocompatible condensation reaction and synthesizing molecules PCTC, it becomes possible to detect furin with multiple signal outputs and confirm nanochannel blockages via mass spectrometry analysis.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Abdusalom A. Suleymanov, Barbara M. Kraus, Thibault Damiens, Albert Ruggi, Euro Solari, Rosario Scopelliti, Farzaneh Fadaei-Tirani, Kay Severin
Summary: The article describes two fluorinated tetraarylethenes that can be used as universal tags for synthesizing solid state luminogens. These tags can be easily obtained from commercially available starting materials and can be coupled with a wide range of substrates to prepare various TAE conjugates.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Qiu-Chen Peng, Yu-Bing Si, Zhao-Yang Wang, Shu-Heng Dai, Qiu-Shui Chen, Kai Li, Shuang-Quan Zang
Summary: This article introduces a new type of metal cluster scintillator, which has the potential to replace traditional commercial scintillators in X-ray imaging. This novel scintillator has advantages such as environmental friendliness, high stability, and ultrahigh exciton utilization rate. It can also be used to fabricate large, high-resolution X-ray imaging devices.
ACS CENTRAL SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Zhibin Xu, Zirui Zhang, Xilong Li, Qi Dong, Yitai Qian, Zhiguo Hou
Summary: Researchers investigated a LaF3-coated Zn anode (LF@Zn) to achieve uniform Zn deposition in a separator-free quasi-solid-state zinc metal battery. The LF@Zn enables smooth and dendrite-free Zn deposition through regulation of Zn2+ flux and modulation of [Zn(H2O)6]2+ solvation sheath. The battery showed prolonged lifespan and superior rate performance.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Zhibin Xu, Zirui Zhang, Xilong Li, Qi Dong, Yitai Qian, Zhiguo Hou
Summary: In this study, a LaF3-coated Zn anode (LF@Zn) is used to induce uniform and dendrite-free Zn deposition, enabling the construction of a separator-free quasi-solid-state zinc metal battery. The quasi-solid-state electrolyte based on LaF3 regulates the Zn2+ flux and suppresses corrosion side reactions. The LF@Zn anode shows a significantly prolonged lifespan and superior rate performance, making it a promising candidate for high-performance zinc metal batteries.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Chaoqun Mu, Zeyuan Zhang, Yali Hou, Haifei Liu, Lingzhi Ma, Xiaopeng Li, Sanliang Ling, Gang He, Mingming Zhang
Summary: By using multi-component emissive metallacages as solid-state fluorescent materials, high quantum yield emission performance was achieved by restricting molecular motions and suppressing non-radiative decay. One of the metallacages exhibited very high fluorescence quantum yield in the solid state and was successfully applied as a coating for white-light emission in a blue LED bulb.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Stefan Bachevillier, Hua-Kang Yuan, Kornelius Tetzner, Donal D. C. Bradley, Thomas D. Anthopoulos, Paul N. Stavrinou, Natalie Stingelin
Summary: In this study, proof-of-concept refractive-index structures with large refractive-index-gradient profiles were demonstrated using a micro-contact photothermal annealing (mu CPA) process. A significant refractive index modulation of up to Delta n approximate to +0.05 can be achieved within less than a second of pulsed lamp exposure with mu CPA, showing potential for high throughput fabrication of photonic structures with a polymer-based system.
MATERIALS HORIZONS
(2022)
Article
Nanoscience & Nanotechnology
Iain Hamilton, Minwon Suh, Jim Bailey, Donal D. C. Bradley, Ji-Seon Kim
Summary: Modification of the pi-conjugated backbone structure of CPEs and LEPs allows for control of the CPE/LEP interface properties, leading to improved efficiency and response time in PLED devices. However, the formation of a type II heterojunction at the CPE/LEP interface causes interfacial luminance quenching and reduces device efficiency. A deep CPE LUMO is found to be beneficial for fast device turn-on.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Bingjun Wang, Sungho Nam, Saurav Limbu, Ji-Seon Kim, Moritz Riede, Donal D. C. Bradley
Summary: This paper reports on the use of N,N-dimethylformamide (DMF) and 1-methyl-2-pyrrolidinone (NMP) as alternative solvents for copper(I) thiocyanate (CuSCN) interlayers. The properties of CuSCN layers processed from DMF and NMP are compared to those processed from traditional solvents and other recent alternatives. The study discusses the surface roughness, polymorphism, and surface chemistry of the resulting CuSCN layers, as well as the interlayer surface energy and ionization potential. The overall suitability of dimethyl sulfoxide (DMSO) and DMF as solvents for CuSCN interlayer deposition is demonstrated through device tests.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Physical
Murali Gedda, Despoina Gkeka, Mohamad Insan Nugraha, Alberto D. Scaccabarozzi, Emre Yengel, Jafar Khan, Lain Hamilton, Yuanbao Lin, Marielle Deconinck, Yana Vaynzof, Frederic Laquai, Donal D. C. Bradley, Thomas D. Anthopoulos
Summary: This study reports highly efficient green PeLEDs based on blends of low-dimensional hybrid perovskite and organic semiconductor, which achieve greatly enhanced performance characteristics through the use of self-assembled monolayers as hole-injecting layers.
ADVANCED ENERGY MATERIALS
(2023)
Article
Polymer Science
Nikol T. Lambeva, Claudius C. Mullen, Xuyu Gao, Qingjing Wu, Robert A. Taylor, Youtian Tao, Donal D. C. Bradley
Summary: This study investigates the spectral diffusion of singlet and triplet excitons in 9,9-dioctylfluorene-based conjugated copolymers. It demonstrates that changes in molecular conformation can optimize the triplet diffusion properties.
JOURNAL OF POLYMER SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Kam C. Poon, Georgina L. Gregory, Gregory S. Sulley, Fernando Vidal, Charlotte K. Williams
Summary: Using CO2 to make polycarbonates through ROCOP reduces pollution in polymer manufacturing. Recent developments in catalysis allow for the copolymerization with biomass-derived monomers, but the resulting material properties are underinvestigated.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Bradley E. Cowie, Lisa Hafele, Andreas Phanopoulos, Said A. Said, Ja Kyung Lee, Anna Regoutz, Milo S. P. Shaffer, Charlotte K. Williams
Summary: This work demonstrates the use of organometallic routes for the synthesis of copper(0/I) nanoparticles and emphasizes the importance of ligand selection to achieve desired material compositions. By reacting an organo-copper precursor with hydrogen, air or hydrogen sulfide, Cu, Cu2O or Cu2S nanoparticles can be obtained. Sub-stoichiometric amounts of protonated ligands are used to avoid excess contamination, and ligand exchange reactions reveal different coordination tendencies for copper(0) nanoparticles compared to Cu2O and Cu2S. This study highlights the potential of organometallic methods for well-defined nanoparticles and underscores the significance of ligand chemistry.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Jamie T. T. Wilmore, Yuen Cheong Tse, Andrew Docker, Caspar Whitehead, Charlotte K. K. Williams, Paul D. D. Beer
Summary: A series of dynamic metalloporphyrin [2]rotaxane molecular shuttles were synthesized with high yield using active metal template synthetic methodology. The dynamic macrocycle translocation is controlled by an inter-component co-ordination interaction between the macrocycle pyridyl and axle Zn(II) metalloporphyrin. The shuttling behavior can be inhibited by a neutral Lewis base, but can be tuned through rotaxane demetallation or subsequent metallation.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Fernando Vidal, Sevven Smith, Charlotte K. Williams
Summary: Boron-functionalized polymers have wide applications in opto-electronics, biology, and medicine. However, methods to produce boron-functionalized and degradable polyesters are rare. This study presents a controlled ring-opening copolymerization method to produce boron-functionalized polyesters. The resulting polymers have adjustable structures, molecular weights, and boron functionalities. The boronic ester-functionalized polymers are amorphous and have high glass transition temperatures and good thermal stability. The utility of this method is demonstrated by synthesizing fluorescent spherical nanoparticles. This versatile technology provides a platform for future explorations of degradable and functional polymers.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Wouter Lindeboom, Arron C. Deacy, Andreas Phanopoulos, Antoine Buchard, Charlotte K. Williams
Summary: Carbon dioxide copolymerization is a promising strategy for CO2 utilization, but the success depends on improving the catalysis. However, the relationship between catalyst structure and performance is not straightforward, which limits the ability to predict and enhance both catalytic activity and selectivity. In this study, a simple measure of a catalyst ground-state parameter, metal reduction potential, is shown to directly correlate with both polymerization activity and selectivity. This method has been successfully applied to compare the performance of 6 new heterodinuclear Co(III)K(I) catalysts for CO2 copolymerization, providing valuable insights for future catalyst discovery.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Thomas M. McGuire, Antoine Buchard, Charlotte Williams
Summary: This study presents an efficient method for chemical recycling of waste Poly(L-lactic acid) (PLLA) using a commercial Sn(II) catalyst and nonvolatile commercial alcohol. The depolymerization of PLLA to yield pure L-lactide (L-LA) can be achieved at low temperatures, and the catalyst system shows outstanding activity and selectivity. Furthermore, the catalyst system can be recycled multiple times without loss of its catalytic productivity.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Multidisciplinary Sciences
Francesca Fiorentini, Wilfred T. T. Diment, Arron C. C. Deacy, Ryan W. F. Kerr, Stephen Faulkner, Charlotte K. K. Williams
Summary: In this study, a series of heterodinuclear catalysts based on Co(III) combined with alkali and alkaline earth metals were evaluated for three different polymerization reactions. The results show that catalysts with lower Lewis acidity exhibit higher reaction rates and selectivity. These structure-performance correlations apply across different polymerization reactions and provide valuable insights for the future development of catalytic synergy.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Wilfred T. Diment, Gloria Rosetto, Noura Ezaz-Nikpay, Ryan W. F. Kerr, Charlotte K. Williams
Summary: The utilization of an iron(iii)/potassium(i) catalyst in ring-opening copolymerization of epoxides and anhydrides without additives/co-catalyst demonstrates high catalytic efficiency, loading tolerance, thermal stability, and selectivity. This catalyst exhibits unparalleled rates using terpene-derived monomers, resulting in bio-derived, amorphous polyesters with a high glass transition temperature (>100 degrees C), making them suitable for future applications as thermoplastics, block polymer adhesives, and elastomers.
Article
Materials Science, Multidisciplinary
Gi Byoung Hwang, Joe Stent, Sacha Noimark, Ki Joon Heo, Alexander J. Macrobert, Christopher W. M. Kay, Enrico Salvadori, Charlotte K. Williams, Sebastian D. Pike, Milo S. P. Shaffer, Elaine Allan, Ivan P. Parkin
Summary: In this study, a white light-activated bactericidal coating consisting of acrylic latex, ZnO NPs and CV was produced. The CV-dyed samples showed intrinsic bactericidal activity against S. aureus and the presence of ZnO NPs significantly enhanced the bactericidal activity. It is expected that this technique could be used to maintain low pathogen levels on hospital surfaces.
MATERIALS ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
Thomas M. McGuire, Antoine Buchard, Charlotte Williams
Summary: A commercial Sn(II) catalyst combined with a commercial alcohol has been found to efficiently convert waste PLLA plastic into pure L-lactic acid at low temperatures. This catalyst system exhibits not only excellent catalytic activity and yield, but also significantly lower usage compared to previous catalysts.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
