<menu id="aoagm"><menu id="aoagm"></menu></menu>
<dd id="aoagm"></dd>
  • <xmp id="aoagm">
    <menu id="aoagm"><tt id="aoagm"></tt></menu>
    首頁» 科研進展» 吳凱課題組在表面非對稱反應研究中取得進展

    吳凱課題組在表面非對稱反應研究中取得進展

    合成化學和材料科學的快速發展得益于豐富的化學反應“工具箱”。它既包括了多種多樣的化學反應類型,也包括了不斷擴充的反應調控方法學——后者對于提高反應效率和精準程度至關重要。一類重要的反應調控方法被稱為非對稱反應,即通過對反應過程的精細控制,從而在同一分子中多個等價的反應活性位點上分別實現不同的化學反應。借助這類方法,可以從簡單的前驅體出發合成結構復雜的產物。然而,在傳統的濕法合成化學中,受限于反應環境的均一性和不可控性,非對稱反應很難實現。

    針對這一問題,北京大學化學與分子工程學院吳凱課題組進行了相關研究,通過對反應過程的精準控制,在固體表面實現了非對稱反應。研究成果發表在最新一期《自然-通訊》雜志上(Jing Liu, Qiwei Chen, Kang Cai, Jie Li, Yaru Li, Xiao Yang, Yajie Zhang, Yongfeng Wang,* Hao Tang, Dahui Zhao* and Kai Wu,* Stepwise On-Surface Dissymmetric Reaction to Construct Binodal Organometallic Network, Nat. Commun. 2019, 10, 2545)。

    該研究利用1,4-二溴-2,5-二乙炔基苯這一雙官能團分子作為反應前驅體。掃描隧道顯微鏡研究表明,前驅體分子吸附在Ag(111)表面后,兩個等價溴代位點在不同溫度下分步活化,并參與不同的反應:室溫(300 K)下,分子首先選擇性地脫去一個溴原子,脫溴位點與氫原子反應;同時,分子中的炔基發生分子間反應,形成由炔--炔節點連接而成的一維有機金屬鏈狀結構。分子中另一個溴原子的活化需要更高的溫度(320~450 K),形成的脫溴位點則與表面銀增原子反應生成分子間的有機金屬連接,最終得到由炔--炔和炔--苯兩種有機金屬節點有序排列而成的二維結構。密度泛函理論計算進一步揭示了非對稱反應的機理:分子中兩個溴原子解離勢壘的差異導致了二者在不同溫度下分步活化。較低溫度下,炔基的反應提供大量氫原子,促進了脫溴位點與氫的不可逆結合;更高溫度下,表面氫原子耗盡,穩定的分子間有機金屬產物的形成拉動了脫溴位點與銀的反應向右進行。該研究為制備復雜的分子納米結構和高分子提供了新思路。

     

    本文的第一作者為吳凱課題組已畢業的劉婧博士。該工作是與北京大學信息科學技術學院王永鋒課題組、化學與分子工程學院趙達慧課題組以及法國國家科研中心材料制造與結構研究中心(CEMES-CNES)唐浩課題組合作完成的,并得到了國家自然科學基金委員會、科技部以及北京分子科學國家研究中心的經費支持。

    原文鏈接:https://www.nature.com/articles/s41467-019-10522-4

     

    教師ftp
    在線辦公
    TOP 703彩票 2848.tt | www.bet63b.com | www.6033r.com | 00774oo.com | www.775704.com | www.7036f.com | www.068500.com | long88.com | 4022w.com | www.sjgc2.com | www.bwinyz21.com | www.wf5588.com | 38851100.com | 59522w.com | www.424770.com | www.js69vv.cc | www.973777.com | 111122cc.com | 3473w.com | 97799m.com | www.3933w.cc | www.383335.com | www.hg0450.com | 0808bc.com | 2257019.com | www.630155.com | www.zzyl63.com | www.ddpahv.com | 32355rr.com | 6118m.com | man152.com | www.3126p.com | www.xj6005.com | www.333550.com | 97618o.com | 4255ii.com | 5856uuu.com | www.775703.com | www.js7601.com | www.hh892.com | www.7607677.com | 4486699.com | www.j36.cc | www.zr6668.com | 4195c.com | 77606z.com | 234915.com | www.358939.com | www.68568g.com | www.3066ww.com | www.33ms33.com | www.bh11234.com | 80368s.com | i32365.com | wnsr818.com | www.638807.com | www.81520g.com | www.7366002.com | www.699139.com | www.7720v.com | 4997f.com | ma76.com | x3456.com | www.106280.com | www.csgc9.com | www.1855.cc | www.78680r.com | www.98698n.com | www.62007.com | www.8124k.com | 096.com | 4167d.com | 19927.com | 2418007.com | www.599474.com | www.8816s.com | www.55717s.com | www.5099xx.com | www.25959a.com | www.77537r.com | www.965900.com | www.50054t.com | www.2299nsb.com | www.55060f.com | www.9m148.com | www.xpj238886.com | www.ylg5999.com | 37570t.com | 838388x.com | 749101.com | 0245z.com | 22555156.com | sjlh66.com | www.0377555.com | www.506951.com | www.c177.com | www.3479c.com | www.50989f.com | www.win1239.com | www.508970.com | www.b35hh.com | www.28000q.com | www.ggu.99233u.com | www.285280.com | www.hg7884.com | www.hg0599.com | www.he0066.com | www.zb623.com | 748335.com | ooo8827.com | 68228x.com | hd89v.com | 7720e.com | 336yh.com | 22098b.com | 8159f.cc | 3957m.com | 3679aa.com | 3559e.com | 3386.com | r4042.com | 22222ylg.com | 50067p.com | csy.bet | 375656.com | 80368k.com | 7720x.net | 3178kk.com | 8135856.com | 77605s.com | 6830g.com | tyc71.com | feicai0536.com | feicai0745.com | 2767l.com | 55ii8332.com | 2885647.com | www.9763333.com | 20054422.com | 500000515.com | 2767u.com | 5589.cc | g47479.com | 7499822.com | LXYL350.com | 3189vip.com | ee360360.cn | www.22832333.com | www.2846f.com | www.2091p.com | www.56754.com | www.188614.com | www.258suncity.com | www.79500b.com | www.4078g.com | www.58908c.com | www.pj88.com | www.26163x.com | www.igcp3.com | www.799425.com | www.196037.com | www.026079.com | v93902.com | 9030n.com | 1104027.com | 51133r.com | 8028522.com | 6830ee.com | www.48163.com | www.yh18826.com | www.788789.com | www.jz787.com | www.79095l.com | www.395768.com | www.39500c.com | www.701546.com | www.050236.com | xh15555.com | 38648ee.cc | 60688.cc | 22207i.com | www.2x0048.com | www.caibb.com | www.04567x.com | www.6768996.com | www.5086j.com | www.355246.com | 9103uu.com | cp598.com | 655661100.com | hb10611.com | www.sb84.com | www.98698l.com | www.q98478.com | www.750966.com | www.218195.com | 53262u.com | 4288ii.com | 83377z.com | www.4938w.com | www.mhcp2.com | www.56011t.com | www.5854d.cc | www.001562.com | 88833.com | 2490g.com | www.28758p.com | www.092779.com | www.1500777.com | www.32123b.com | www.533082.com | q47479.com | 5856o.com | yk105.com | www.9949l.com | www.55070h.com | www.169097.com | www.535350.com | 360urlscan.com | 6766.com | www.hg0125.com | www.gt111999.com | www.36788n.com | www.17711.com | www.516088.com | www.1368w.cc | 7570.am | 3559dd.com | www.ylg3099.com | www.9374i.com | www.pj9010.com | www.852699.com | 99567d.com | 1294d.com | www.608333.com | www.80gfc.com | www.7714a.com | www.015990.com | js222js.com | www.68666o.com | www.9928h.com | www.6613622.com | www.346977.com | 808988g.com | 4255ttt.com | www.jty649.com | www.hg77033.com | www.506433.com | 69990f.com | 4812222.com | www.849suncity.com | www.jsbet008.com | www.52072e.com | 36406600.com | www.f5566.com | www.420082.com | www.cp7777p.com | 3245e.com | www.wn2018.com | www.50054.com | www.66073.cc | 0015jj.com | feicai0734.com | www.c53889.com | www.66376x.com | 27878nn.com | JS1388f.com | www.msc385.com | www.6482x.com | 0033l.cc | 0033m.cc | www.9966.so | www.hy6934.com | 4508dd.com | 73657m.com | www.88166i.com | www.cb5588.com | 41866.com | www.vns9967.com | www.2021b.com | www.444601.com | kkk5657.com | www.43677.com | www.p98478.com | 7196t.com | 2824y.net | www.77731s.com | www.fl96.com | 4136a.com | www.3333740.com | www.bjl916.com | 500000797.com | 3136nn.com | www.99113q.com | www.902257.com | p888ab.com | www.44221.com | www.hg99957.com | 80368n.com | 66458e.com | www.00778n.com | www.342077.com | 88851y.com | www.msc44.com | www.gocp2.com | 655661144.com | www.i2824.com | www.871828.com | 7155268.com | www.508533.com | 3559oo.com | www.hndf333.com | www.ch8911.com | 37111n.com | www.66458v.com | www.2350j.com | 30179988.com | www.ym777.cc | www.c189.vip | 7240s.com | www.789q.com | www.542511.com | 86811ww.com | www.85857d.com | www.544096.com | dh7022.com | www.98698n.com | www.278688.com | 56988z.vip | www.5189666.com | 84497799.com | www.a2a333.cc | www.5952122.com | 998s.cc | www.hai0000.com | www.56717.com | 983888f.com | www.la6666.com | www.788464.com | 28839l.com | www.0042737.com | 00zz8332.com | www.617705.com | www.334777.com | aaa2848.com | www.dr1199.com | www.645880.com | 59889m.com | www.506930.com | 3616l.com | www.358nn.com | www.qmkl5.com | 00773cc.com | www.bwinyz09.com | 38821155.com | www.29886q.com | www.3933t.cc | 2105.com | www.158024.com | 33115d.com | www.hg70999.com | www.969751.com | 88332007.com | www.flb277.com | 7894e.com | www.277577.com | www.401267.com | 2400010.com | www.hg6767.com | 3467e.com | www.4972s.com | LXYL365.com | www.32666a.com | www.910977.com | vip31447.com | www.0601k.com | ahga017.com | 7605m.com | www.s456x.com | 00773e.com | www.792suncity.com | www.979133.com | d8502.com | www.6939c.com | 30171166.com | www.673888j.com | 80567b.com | www.49200a.com | www.107658.com | www.a0055.com | www.983112.com | 55bb8331.com | www.11554.cc | hgw7745.com | www.vip332.com | 4581.com | www.7240o.com | 277.ag | www.a12189.com | 1389hh.com | www.170507.com | cp3136.com | www.8yw.net | 30176699.com | www.sancaishop.com | www.065766.com | www.0860b.com | www.401276.com | www.hg6699.net | www.669772.com | www.js507713.com | www.811927.com | www.f118cp.com | www.789199a.com | www.js887788.com | www.ct8811.com | www.86611w.com | www.sytg6.com | 1591xxx.com | www.c6093.com | www.8aobo.com | www.916720.com | www.12007.com | www.918361.com | www.1333zx.com | www.646277.com | www.205611.com | www.327536.com | www.js4333.com | www.50732e.com | www.rr8866.com | express.com | www.466669.com | 1489c.com | www.534359.com | ly88888818.com | www.4521p.com | 53262jj.com | www.9996qq.com | yh88135.cc | www.7782w.com | www.kf318.com | www.689613.com | www.8814e9.com | www.50054i.com | www.ra7088.com | 1577726.com | www.673888s.com | 89892mm.com | www.7886269.com | 52239.com | www.23czj.com | www.0909v.com | www.135368.com | www.990909.com | 1985555.com | www.58404c.com | ccc3405.com | www.71399c.com | 15a4.net | www.196346.com | www.44234.com | 121.net | www.509236.com | 90659.com | www.3126c.com | www.vns82222.com | bc21888.com | www.xfc88.com | 33318f.com | www.bet73z.com | www.033033m.com | www.215889.com | www.hd779.com | 56787tt.com | www.256818.com | xh12222.com | www.217302.com | www.1117303.com | bet577.com | www.pj56899.com | www.0555hg.com | www.032823.com | www.983888d.com | 3950u.com | www.8499e.com | www.9996kk.com | lll01234.com | www.7036f.com | 2649b.com | www.451599.com | www.kzcs4.com | mg437711.com | www.5522k.cc | www.4272000.com | 364810.com | www.993956.com | www.81866f.com | zhcw.com | www.7366l.com | 348977.com | www.547577.com | www.34i35.com | 5219x.com | www.hm2299.com | www.hg8452.com | 228888y.com | www.50024g.com | www.0860h.com | 44qq8332.com | www.771493.com | www.668567b.com | 3379ww.com | www.js7581.com | www.pj7889.com | 55984d.com | www.16065l.com | www.wnsr828.com | 4997g.com | www.386123.com | www.pj6698.com | 58222vv.com | www.9646l.com | www.55268uu.com | ks3334.com | www.33997f.com | www.152336.com | 1294n.cc | www.996732.com | www.18070.com | fh7.927go.com | www.377503.com | www.55060o.com | 8036w.com | 55402dh.com | www.flb977.com | www.yh6996.com | 55119193.com | www.9478o.com | www.xg189.net | 4289t.com | www.444215.com | www.o69096.com | 459825.com | 566777m.com | www.7239.net | www.778123.com | 6487jjj.com | www.517411.com | www.80188f.com | www.0111js.com | 9479a8.com | www.9478m.com | www.890555.com | hubet555.com | jj5443.com | www.764169.com | www.553843.com | uuu4255.com | www.303471.com | www.506201.com | www.yh8894.com | 1443b.com | www.585065.com | www.652513.com | www.x32126.cc | 1665q.com | www.684050.com | www.420082.com | www.pjbet222.com | 1458i.com | www.493552.com | www.07679i.com | www.pj88111.com | blm877.com | www.055983.com | www.81608b.com | www.msc835.com | 2148888.net | 3983012.com | www.94580.cc | www.936741.com | www.5009844.com | 61652f.com | www.406577.com | www.1434v.com | www.hg99953.com | 11005f.com | tyc.com | www.5xcv.com | www.1429g7.com | www.773114.com | 4590q.com | 61321166.com | www.26299c.com | www.g3065.com | www.112211b.com | wns157.com | 80368j.com | www.55228d.com | www.bd2019j.com | www.999ldz.com | 4518.com | 0241p.com | www.5854p.cc | www.800544.com | www.22885004.com | 00jj8331.com | hg088.cc | www.510830.com | www.4058w.com | www.68suncitya.com | www.3983139.com | 4152n.com | 84498833.com | www.071wy.com | www.e3410.com | www.3534y.com | hhhhh777.com | 336.cc | 9694i.com | www.777hy.cc | www.12136q.com | www.40789b.com | bwin970.co | v45638.com | fstppx.com | www.hm2299.com | www.828177.com | www.58atv.com | www.vns9981.com | 888992244.com | wlb333.com | www.330672.com | www.66376x.com | www.694916.com | www.3616g.com | 50028822.com | ddd5657.com | g3144.com | www.328806.com | www.33588r.com | www.6687b.com | www.243j5.com | www.lb0044.com | 0088457.com | 915630.com | 168cp-r.com | www.671075.com | www.hn896.com | www.huangma30.com | www.10870.com | www.js80388.com | 444b9.com | j85686.com | 22113885.com | www.511642.com | www.43818r.com | www.32031z.com | www.u948u.com | www.05125a.com | www.899495.com | www.7239h.com | www.30350q.com | www.239.com | www.hg8102.com | www.ylg888888.com | 7742ll.com | u21148.com | 6095app.com | 6199900.com | www.530477.com | www.2875z.com | www.3334331.com | www.566733.com | www.66c668.com | www.vnsr33888.com | www.ag6.com | 2649kk.com | 99567h.com | 492dh.com | 11422q.com | 5577vn77.com | www.50074i.com | www.602913.com | www.022gs.cc | www.80767l.com | www.7240a.com | www.601709.com | www.gm41.com | www.234894.com | www.lhj2288.com | www.9996dd.com | www.df997.com | 71245aa.com | qq365o.com | 3340.com | y21148.com | 1479z.com | 1407.cc | 15856r.com | 243d3.com | 667766c.com | www.101377.com | www.472255.com | www.803372.com | www.11tdc.com | www.34788h.com | www.99788l.com | www.89777t.com | www.000128522.com | www.w84k.com | www.bet63v.com | www.4212e.com | www.5504k.com | www.327365.com | www.922848.com | www.hg7766b.com | www.mg7088.com | www.pj9723.com | www.655msc.com | www.309999.com | www.yh06789.com | www.xw0000.com | www.ylg2206.com | hg5588o.com | 6175n.com | hg999333c.com | 6363t.com | c388w.com | 20775588.com | 61652k.com | www.js60g.com | www.227vns.com | www.o1688.net | www.vns2533.com | www.56012.com | www.v6789.com | www.76060r.com | www.33388806.com | www.8694k.com | www.7025q.com | www.425suncity.com | www.7676760088.com | www.99950020.com | www.vns7312.com | www.36896.com | www.tbet899.com | www.56655y.com | www.g92776.com | www.16181y.com | www.46630.com | www.ba304.com | www.cb600.cc | www.dayou266.com | www.33997h.com | www.371j.cc | www.912183.com | www.500916.com | www.88266i.com | 188qq33.com | 22207g.com | 3788q.com | 3131e.cc | 0011.se | 17998.cc | 58802r.com | www.vns00022.com | www.js6169.com | www.xn221.com | www.1168z.com | www.4058ee.com | www.56011y.com | www.99080088.com | www.9356m.com | www.852699.com | www.196016.com | 272tt.net | 73657k.com | c99474.com | 80368ii.com | 2267k.com | www.vns98.com | www.710868.com | www.suncity758.com | www.mgm868002.com | www.siji06.com | www.66376t.com | www.799666a.com | www.340680.com | s2554.com | 2689.com | JS1388n.com | qq5144.com | www.2846q.com | www.174666.com | www.4996xn.com | www.8998818.com | www.3126c.com | www.500227.com | 6220d.com | 5099gg.com | 22442007.com | 6033z.com | www.026319.com | www.qmc0055.com | www.33678uu.com | www.998855aa.com | www.857380.com | 996622aa.com | pj00aa.com | lq0578.net | www.3983112.com | www.0063501.com | www.19yh1.com | www.390737.com | www.lczg5.com | wzyxwz.org | qqq3405.com | yt8802.com | www.vns991.cc | www.9426.com | www.2776.cc | www.66332p.com | www.512477.com | 5651q.com | o4212.com | 59599z.com | www.vns7552.com | www.sha2277.com | www.89894x.com | www.506921.com | afcp01.com | 1489l.com | www.ag2020a.com | www.0082909.com | www.6057777.com | www.3933f.cc | 55331w.com | 059dhw.com | 59889c.com | www.22557712.com | www.9931331.com | 748v.com | www.48234h.com | www.310935.com | www.777577.com | www.641277.com | www.022sh.cc | www.83993u.com | linxiangf.pw | 30006q.com | www.756789.com | www.y6091.com | www.zcwf3.com | 51335m.com | 51133f.com | www.hg3733.com | www.5099ii.com | www.54400m.com | jbb76.cc | 4255s.com | www.v6789.com | www.35252m.com | www.CK1432.COM | www.155301.com | 0234mm.com | www.147755.com | www.hjcp77.com | www.86333.com | www.036874.com | vns8562.com | www.5170.com | www.2350.com | www.26163p.com | 188qq.com | 822051.com | www.cs11666.com | www.327969.com | www.910155.com | 11422.cc | 21866n.com | www.77c668.com | www.52303s.com | 2844w.com | 6766ee.com | www.9225z.com | www.flb901.com | www.394577.com | 3678nnn.com | www.vnsr600.com | www.55060h.com | www.qlc3.com | wfcp999888.com | 35441999.com | www.rycp047.com | www.5441n.com | yabo6000.com | 83086s.com | www.938n.cc | www.5854q.cc | 67877q.com | 6647g.com | www.38345n.com | www.2qxc.com | blr9944.com | www.64400a.com | www.f32939.com | www.960207.com | 9694o.com | www.717020.com | www.01991.com | www.374511.com | 8037i.com | www.hg56555.com | www.766885.com | sypk10.com | 22291144.com | www.458177.com | www.fcff8.com | 032656.com | www.7610679.com | www.78680d.com | www.50732e.com | wnsr8821.com | www.ljw031.com | www.2373v.com | 6487nnn.com | www.193234.com | www.380870.com | www.35155u.com | ued.bet | www.z948z.com | www.c229.vip | 37111p.com | www.879nn.com | www.3978a.com | 400w.am | www.pj6633.com | www.a3410.com | www.60007i.com | 33318t.com | www.ybw18.com | www.673266.com | 36405599.com | www.hg6912.com | www.34czj.com | bet577t.com | www.rrrr0076.com | www.66376k.com | 6146x.com | www.09569s.com | www.05088.com | 9479vip.com | www.995q.net | www.6126.com | 3616c.com | www.7025m.com | www.555365.com | 1634c.com | www.klcpdd.com | www.81678n.com | xxxx0122.com | www.537msc.com | www.39957g.com | 2381u.com | www.68003.com | www.3890x.com | 8757055.com | www.msc573.com | www.gczj2.com | 8h888.com | www.7759333.com | www.606634.com | wnsr8807.com | www.115207.com | www.71399i.com | 50027711.com | www.8855gvb.com | 88899.com | www.4625o.com | www.87668d.com | mi533.com | www.282555c.com | www.914902.com | 08159p.com | www.988jyh.com | 2008hh.com | www.kkw915.com | www.6678566.com | 15a42.net | www.3959h.com | www.tctx6.com | 3559uu.com | www.9737pp.com | man152.com | www.333177.com | www.99677k.com | vv879404.com | www.177572.com | www.326477.com | 3016ccc.com | www.6889791.com | 588ppp.cc | www.js276.com | www.431506.com | feicai0353.com | www.win1232.com | ca5033.com | www.85966.com | www.233896.com | 1213mmm.com | www.q93777.com | lh66o.com | www.4212e.com | 188qq44.com | www.h27229.com | www.003ac.com | 6261bb.com | www.972080.com | 9193.com | www.81789.com | www.wcp666888.com | www.590761.com | vn13588.me | www.771495.com | 4488ss.com | www.10999o.com | 35252i.com | www.9679003.com | www.582006.com | 18438w.com | www.77802g.com | 4488uu.com | www.369403.com | 22cc8331.com | www.k779977.com | www.43131l.com | www.67797x.com | www.777768a.com | 8905j.com | www.33311.com | 67888q.cc | www.69989b.com | 5369q.com | www.5049p.com | aoyu22.com | www.29980044.net | www.313055.com | www.00yh765.com | www.hf6880.com | 7792b.com | www.55228h.com | 3522700.com | www.705323.com | 7172004.com | www.20677.com | 3032.com | www.huayi388.com | www.009159.com | 77605k.com | www.27363i.com | s00351.com | www.776775.com | 9030w.com | www.dg533.com | 55331381.com | www.18777s.com | www.54400i.com | www.699888.com | www.197092.com | www.2846g.com | www.361944.com | www.365815c.com | www.566011.com | www.bwin3388.com | www.599830.com | www.hg6699.net | www.530751.com | www.21365qq.com |