Academic celebrity hall: Accept rice 10 thousand magnetism king -- university Sun Shouheng teachs Br

Bright university teachs Sun Shouheng cloth

Task group homepage:

Http://casey.brown.edu/chemistry/research/sun/index.html

1984, bachelor's degree is obtained in Sichuan university Chemstry Department.

1987, master's degree is obtained in Nanjing university Chemstry Department.

1996, in American cloth bright university obtains a doctor's degree.

1996-1998 year, in American IBM the research center does Thoms Watson postdoctoral.

1998-2004 year, in American IBM the research center does Thoms Watson researcher.

2005 - 2007 year, braun associate professor of university Chemstry Department

2008 - up to now, the university teachs Braun

Be in early or late Nature, science, j. Am. Chem. Soc. , adv. Mater. , nano. Lett. , angew. Chem. Int. Ed. , the paper is published on the famous periodical such as PNAS nearly 200, own 20 patent, go up in international conference on invitation for many times to make a speech. Lecture of scholar of the Yangtse River of university of selected 2009 Nanjing is taught, tip of selected 2011 whole world a list of names posted up of hall of 100 chemist celebrity is odd and list the 31st. Hold the position of Nano Letters now, nano Today, science Of Advanced Materials, the international such as Nano Research is famous of the magazine make up appoint, obtain multinomial international holds a post and reward honor.

Graph 1

Pursue on 1 for Sun Shouheng the professor studies content is classified (come from task group homepage) . All research content can divide for two much: 1. The synthesis of accept rice material and assemble oneself; 2. The function of accept rice material is changed and use biology medicine, catalysis, the sources of energy 3 big fields. We will divide below 3 articles in going up to come the research of tasting ancient bronze mirror collect, introduction, Mr. Sun Shouheng works. This period we will introduce content mainly Mr. Sun Shouheng is synthesized in accept rice material work with the research that assembles a respect.

Sun Shouheng is taught from last century end, begin those who study grain of rice of solution photograph accept to be able to accuse synthesis and own outfit. Use the method of Bottom Up, rice of pair of metals, oxide accept comes true in solution the adjusting control of structure of appearance of particle size, form, composition, crystal. Teach Sun Shouheng the analogy to be king of 10 thousand magnetism, because form of Mr. Sun task is most classic,be the synthesis that studies the system is grain of magnetic accept rice, assemble oneself reach its to apply, basically include the following kinds: 1. It is the representing's MPt(M = Fe Co Ni) with FePt, grain of rice of accept of magnetism of Pt radical alloy; 2. The magnetic oxide that with 4 oxidation 3 iron are a delegate accept rice grain (MXFeYO4) grain of rice of accept of metal of simple substance of;3, Fe, Co; 4, grain of rice of accept of magnetism of the dumbbell structure that is a delegate with Au-Fe3O4, nuclear housing construction. 5, the synthesis of grain of other offer rice and assemble. Ordinal collect introduces relevant document as follows:

Classical overview: Chem. Rev. 2016, 116, 10473; Adv. Func. Mater. 2016, 26, 3809-3817. ; Chem. Soc. Rev. 2009, 38, 2532. ; Adv. Func. Mater. 2008, 18, 391. ; IBM J. Res. &Dev. 2001, 45, 47.

1.With what FePt is a delegate grain of rice of accept of magnetism of Pt radical alloy

Main achievement: In organic dissolvent, it is with oily amine, oleic acid distribute system, overheat is decomposed or in all reductive method synthesizes grain of rice of accept of magnetism of Pt radical alloy. Synthesis gets homogeneity of accept rice grain appearance of good, form is adjustable accuse. The van body of Pt is Pt(acac)2 commonly; The van body of M is M(CO)x. Method 1: Pt(acac)2 heat is reductive, m(CO)x pyrolysis; Method 2: Pt(acac)2; M(CO)x is heated up at the same time reductive. Controlling complex key is reductive undertake with the synchronism that decompose. See figure below 2, graph 3.

Graph 2

Graph 3

Relevant article:

2.The magnetic oxide that with 4 oxidation 3 iron are a delegate accept rice grain (MXFeYO4)

Main achievement: Organic matter regards choice high boiling point as solvent, for instance: 2 benzene aether, 2 benzyl aether, oleic acid, oily amine serves as distribute system, join long chain alkyl at the same time 2 alcohol serve as conditioning agent (also be reducer) . Set out from acetyl acetone iron, pyrolysis synthesizes 4 oxidation 3 iron, see figure below 4. The magnetic oxide that pyrolysis synthesis gets accept rice grain, appearance of even and adjustable, form can accuse dimension (globose, cubic, hollow ball) , see figure below 5.

Graph 4

Graph 5

Relevant article:

3.The magnetic simple substance such as Fe, Co and grain of rice of alloy metal accept

Main achievement: Use high temperature grain of rice of accept of magnetism of the methodological synthesis Fe of pyrolysis of reductive, high temperature, Co. In process of synthesis of grain of Fe accept rice, introduce Cl ion to be able to raise the crystallization sex of grain of Fe accept rice, increase the magnetism of accept rice grain and stability thereby.

Graph 6

Graph 7

Relevant article:

4.Grain of rice of accept of magnetism of the dumbbell structure that is a delegate with Au - Fe3O4, nuclear housing construction

Main achievement: Grain of rice of precious metal accept is planted as brilliant, below the requirement that matchs body existence in oleic acid, oily amine, high temperature heat solves Fe(acac)3, join long chain alkyl 2 alcohol. In pyrolysis process, warm up to be controlled to 200 C first, maintain 1.5 H of 0.5 –, warm up again to 300 C of 280 –, see figure below. Through adjusting temperature of Au/Fe scale, reaction, warm up the element such as speed, can compound a shape of Au-Fe3O4 nucleus hull, beautiful shape, dumbbell condition respectively compound model grain of magnetic accept rice. Among them, dumbbell construction material is mixed to cure in the target of cancer very strong like respect expression application prospect. Later period, we will study the work related summary introduction in detail.

Graph 8

Graph 9

Relevant article:

5.The synthesis of grain of other offer rice and assemble

Main achievement: The solution photograph of material of rice of of all kinds accept is synthesized. Basically include: The synthesis of grain of rice of precious metal accept, for instance Pd, Pt, Au, synthetic method is simple, dimension is very even, form appearance is adjustable. Surface of grain of rice of simple substance, oxide accept is decorated; Grain of magnetic accept rice assembles texture of Cheng Chaojing style oneself.

Relevant article: