Trometamol

Aqueous botanical extracts are produced by ANGUS in the U.S. and made from sustainably sourced plant materials backed by a fully documented and traceable quality system BUFFALO GROVE, Ill., Aug. 9, 2022 /PRNewswire/ -- ANGUS Chemical Company ("ANGUS" or "Company"), a leading global manufacturer and marketer of specialty chemicals for Life Sciences and Industrial markets, today announced the launch of a new portfolio of Natural Botanical Extracts for the U.S. market. The botanical extracts are produced by ANGUS in the U.S. using the traditional method of aqueous extraction and are specifically formulated for use in home and personal care products. ANGUS' botanical extracts are made from sustainably sourced plant materials backed by a fully documented and traceable quality system. "Botanicals are widely used to enhance the luxury and performance of home and personal care products and cater to increasing consumer preferences for products that use naturally derived ingredients," said Mike Lewis, Senior Vice President, Americas, for ANGUS. "It was only natural that we expand into the fast-growing botanicals space with products produced in-house that leverage decades of manufacturing expertise and the ANGUS commitment to quality, purity and transparency." ANGUS' portfolio of natural botanicals currently includes green tea leaf, white tea leaf and chamomile flower extracts. Additional extracts are currently under development for an expected launch in the coming months and include hibiscus flower, lemon fruit, rosemary leaf, licorice root, calendula flower, and gotu kola. In addition to naturally derived botanicals, ANGUS offers a portfolio of high-purity, multifunctional ULTRA PC™-grade amino alcohols, which deliver robust multifunctional performance and broad formulating latitude across a wide range of home, beauty, and personal care applications. Two-ounce samples of ANGUS-produced botanical extracts are now available for customer qualification. Commercial volumes are available for purchase in 2 kg and 5 kg packaging only in the U.S. The Company plans to expand the botanicals product line to other regions in the future. Custom sourcing and extraction are available upon customer request. For additional information or to order a sample, visit angus.com/contact, or contact an ANGUS representative at [email protected]. ABOUT ANGUS ANGUS is a leading global manufacturer and marketer of specialty ingredients for biotechnology, pharmaceutical, consumer and industrial applications. The Company innovates through its unique nitroalkane chemistries, including its flagship AMP™ (aminomethyl propanol) multifunctional additives and TRIS AMINO™ (tromethamine) buffers, which are produced at fully integrated, ISO 9001-certified manufacturing facilities in the United States and Germany. ANGUS serves its global customers through six regional Customer Application Centers located in Chicago, Illinois; Paris, France; São Paulo, Brazil; Singapore; Shanghai, China; and Mumbai, India. The Company is headquartered in Buffalo Grove, Illinois. For more information, visit angus.com. Follow ANGUS on Facebook, Twitter, and LinkedIn. FOR ADDITIONAL INFORMATION ANGUS Media Relations Scott C. Johnson +1 847-808-3769 [email protected] SOURCE ANGUS Chemical Company

Molecular 2D materials find immense applications in materials science, owing to their wide structural variety and easy controllability. Establishing a simple and efficient method for their synthesis is, therefore, important. Now, scientists present a simple method for synthesizing heterolayer coordination nanosheets, a promising 2D material, shedding light on how certain chemical coordination reactions occur at liquid-liquid interfaces. Their method could help develop novel 2D materials with applications in optoelectronic devices. The past few decades have witnessed a great amount of research in the field of two-dimensional (2D) materials. As the name implies, these thin film-like materials are composed of layers that are only a few atoms thick. Many of the chemical and physical properties of 2D materials can be fine-tuned, leading to promising applications in many fields, including optoelectronics, catalysis, renewable energy, and more. Coordination nanosheets are one particularly interesting type of 2D material. The "coordination" refers to the effect of metallic ions in these molecules, which act as coordination centers. These centers can spontaneously create organized molecular dispositions that span multiple layers in 2D materials. This has attracted the attention of materials scientists due to their favorable properties. In fact, we have only begun to scratch the surface regarding what heterolayer coordination nanosheets -- coordination nanosheets whose layers have different atomic composition -- can offer. In a recent study published first on June 13, 2022, and featured on the front cover of Chemistry -- A European Journal, a team of scientists from Tokyo University of Science (TUS) and The University of Tokyo in Japan reported a remarkably simple way to synthesize heterolayer coordination nanosheets. Composed of the organic ligand, terpyridine, coordinating iron and cobalt, these nanosheets assemble themselves at the interface between two immiscible liquids in a peculiar way. The study, led by Prof. Hiroshi Nishihara from TUS, also included contributions from Mr. Joe Komeda, Dr. Kenji Takada, Dr. Hiroaki Maeda, and Dr. Naoya Fukui from TUS. To synthesize the heterolayer coordination nanosheets, the team first created the liquid-liquid interface to enable their assembly. They dissolved tris(terpyridine) ligand in dichloromethane (CH2Cl2), an organic liquid that does not mix with water. They then poured a solution of water and ferrous tetrafluoroborate, an iron-containing chemical, on top of the CH2Cl2. After 24 hours, the first layer of the coordination nanosheet, bis(terpyridine)iron (or "Fe-tpy"), formed at the interface between both liquids. Following this, they removed the iron-containing water and replaced it with cobalt-containing water. In the next few days, a bis(terpyridine)cobalt (or "Co-tpy") layer formed right below the iron-containing one at the liquid-liquid interface. The team made detailed observations of the heterolayer using various advanced techniques, such as scanning electron microscopy, X-ray photoelectron spectroscopy, atomic force microscopy, and scanning transmission electron microscopy. They found that the Co-tpy layer formed neatly below the Fe-tpy layer at the liquid-liquid interface. Moreover, they could control the thickness of the second layer depending on how long they left the synthesis process run its course. Interestingly, the team also found that the ordering of the layers could be swapped by simply changing the order of the synthesis steps. In other words, if they first added a cobalt-containing solution and then replaced it with an iron-containing solution, the synthesized heterolayer would have cobalt coordination centers on the top layer and iron coordination centers on the bottom layer. "Our findings indicate that metal ions can go through the first layer from the aqueous phase to the CH2Cl2 phase to react with terpyridine ligands right at the boundary between the nanosheet and the CH2Cl2 phase," explains Prof. Nishihara. "This is the first ever clarification of the growth direction of coordination nanosheets at a liquid/liquid interface." Additionally, the team investigated the reduction-oxidation properties of their coordination nanosheets as well as their electrical rectification characteristics. They found that the heterolayers behaved much like a diode in a way that is consistent with the electronic energy levels of Co-tpy and Fe-tpy. These insights, coupled with the easy synthesis procedure developed by the team, could help in the design of heterolayer nanosheets made of other materials and tailored for specific electronics applications. "Our synthetic method could be applicable to other coordination polymers synthesized at liquid-liquid interfaces," highlights Prof. Nishihara. "Therefore, the results of this study will expand the structural and functional diversity of molecular 2D materials." With eyes set on the future, the team will keep investigating chemical phenomena occurring at liquid-liquid interfaces, elucidating the mechanisms of mass transport and chemical reactions. Their findings can help expand the design of 2D materials and, hopefully, lead to better performance of optoelectronic devices, such as solar cells.