CAS: 1314-87-0; Lead Sulfide

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参考文献:Kolkmann,Friedrich;Schimmel,Gunther;Scheffer,Jun
标题:Kolkmann,Friedrich;Schimmel,Gunther;Scheffer,Jun

专利信息

专利号:WO-2018020240-A1
优先权日:2016-07-27
标 题:Process for the synthesis of semiconductor nanocrystals
发明人：HOU BO; CHA SEUNGNAM
权利人:UNIV OXFORD INNOVATION LTD
摘要:The invention relates to a process for the synthesis of semiconductor nanocrystals, comprising mixing a nonaqueous solution of a metal precursor with a solid-state chalcogen and reacting the resulting mixture at a temperature of about 90 °C or greater. In another aspect the invention relates to the use of a solid chalcogen in the heterogeneous synthesis of metal chalcogenide semiconductor nanocrystals. Semiconductor nanocrystals obtainable by the processes of the invention are further provided. In particular, nanocrystalline PbS or PbSe having a band gap of greater than 1.6 eV and/or a photoluminescence emission wavelength of about 440 to about 515 nm, and nanocrystalline ZnS or ZnSe having a photoluminescence emission wavelength of about 410 to about 430 nm, and solar cells comprising such nanocrystals, are provided.

专利号:US-10815424-B2
优先权日:2015-12-31
标题:One-step process for synthesis of core shell nanocrystals
发明人：DOGAN LEYLA; DAGTEPE PINAR; HOCAOGLU IBRAHIM; AKGUN OSMAN VEDAT; YAGCI ACAR HAVVA
权利人:KUANTAG NANOTEKNOLOJILER GELISTIRME VE URETIM A S; UNIV KOC
摘要:Present invention provides a process for the synthesis of size and composition tunable colloidal PbMgS core and PbMgS/MS core shell quantum dots emitting in the near infrared (NIR) region of the spectrum in a single operation in a continuous flow reactor. M includes at least one of Cd, Mg, Zn and Cu metals.

专利号:US-8394421-B2
优先权日:2008-07-30
标 题:Synthesis of nanoparticles by fungi
发明人：MANSOORI G ALI
权利人:MANSOORI G ALI; UNIV ILLINOIS
摘要:Systems and methods for synthesizing silver nanoparticles (SNPs) using Trichoderma fungi have been developed. In an aspect, Trichoderma reesei was used for the extracellular synthesis of silver nanoparticles. In the biosynthesis of metal nanoparticle by a fungus, one or more enzymes or metabolites are produced that reduce a salt to its metallic solid nanoparticles through a catalytic process.

专利号:US-2005036938-A1
优先权日:2003-08-13
标 题 :Method for synthesizing nanoparticles of metal sulfides
发明人：HYEON TAEGWHAN
摘要:A synthetic method of fabricating highly crystalline and uniform nanoparticles of metal sulfides, doped metal sulfides, and multi-metallic sulfides disclosed, using no-toxic and inexpensive reagents. A typical synthetic method comprises the steps of, synthesis of metal-surfactant complexes from the reaction of metal precursors and surfactant, addition of sulfur reagent to the solution containing said metal-surfactant complexes followed by heating to high temperature, aging at that temperature to produce metal sulfide nanoparticles and completing the formation of synthesis of nanoparticles metal sulfides and multi-metallic sulfides by adding a poor solvent followed by centrifuging.

专利号:US-2023109627-A1
优先权日:2019-11-14
标 题:Precursor chemistry for quantum dot synthesis enabling temperature-independent modulation of reactivity
发明人：HAN HEE-SUN; PARK JOONHYUCK
权利人:UNIV ILLINOIS
摘要:Provided herein are methods of making a high-quality quantum dot (QD), including by providing anion precursor chemistry that enables chemical modulation of precursor reactivity, thereby, allowing independent optimization of reaction temperature and precursor reactivity to systematically grow high quality QDs and by providing specially configured tunable precursors and related chemistry to facilitate separate reaction pathways for nucleation and growth, thereby accessing heat-up based synthesis of high-quality QD, including core-shell QDs. The methods may include providing a base-QD and a first anion or cation precursor having a composition comprising an anion or a cation element, respectively, and a modification agent. At least one add-layer is grown on the base-QD at a growth temperature, thereby making the high-quality QD comprising the base-QD and the at least one add-layer. At least one add-layer may have a composition comprising an add-layer cation element and an add-layer anion element.

专利号:US-10125311-B1
优先权日:2015-03-20
标题 :Functionalized fluorescent nanoparticles, methods of synthesis and methods of use
发明人：MEYLEMANS HEATHER A; CAMBREA LEE R; KOOIMA MADELINE
权利人:US NAVY
摘要:A method for the fluorescence detection of metal ions and other environmental hazards utilizing ligand functionalized fluorescent nanoparticles. Synthesis of the non-toxic, air, and water stable nanoparticles has been optimized. The fluorescent nanoparticles of the present invention are made from varying ratios of metals including zinc, silver, copper, and indium and sulfur. By varying the ratios of these metals we are able to synthesize nanoparticles that emit over a large range of the visible spectrum. Charge transfer between a target molecule and the nanoparticle is readily identified by a fluorescence change allowing for a fast, simple, visual detection system without the need for expensive analytical instrumentation.