English
聯系我們
網站地圖
郵箱
舊版回顧



中國科大在單分子電致上轉換發光的實驗觀察與機理研究中取得進展

文章來源:中國科學技術大學   發布時間:2019-05-10  【字號:     】  

  最近,中國科學技術大學單分子科學團隊的董振超研究小組,通過掃描隧道顯微鏡(STM)誘導單分子電致發光技術,首次清晰地展示了單個分子在電激勵下的上轉化發光行為,并通過與深圳大學教授李曉光等合作,從理論上揭示了其微觀機制。國際物理學術期刊《物理評論快報》于53日在線發表了這項成果。

  上轉換發光通常指材料吸收低能光子但發出高能光子的反斯托克斯過程,這一現象在激光信息技術、紅外探測、生物醫學等領域有巨大的應用前景。電激勵下的上轉化發光過程中,有機分子吸收由STM注入的低能電子,并在其弛豫過程中發射出高能光子。這一過程涉及分子電子能態、分子間以及分子與周圍環境間的相互作用,深入理解這些相互競爭與制約的微觀過程,對其在有機光電轉換器件、光催化和光合成等方面的應用有著至關重要的意義。

    中國科大單分子科學團隊長期致力于發展將STM高空間分辨表征與光學技術高靈敏探測相結合的技術,特別是通過巧妙調控隧道結納腔等離激元的寬頻、局域與增強特性,拓展了測量極限,為在單分子水平上觀測和調控分子的光電行為提供了有力手段。他們利用高度局域化的隧穿電子作為激發源,研究了氯化鈉脫耦合層表面上的單個酞菁分子的電致熒光,不僅發現了反常的電致上轉換發光現象,還清晰地展示了分子發光強度的三個不同偏壓區域。尤其值得指出的是,該工作在單分子水平上觀測到電致上轉換發光現象,有力排除了此前對這類體系中上轉換機制的一些猜測,同時不同偏壓區域的觀測也為分析和理解上轉換機制提供了豐富的數據。以此為基礎的理論分析進一步表明,兩種不同的分子激發機制——非彈性電子散射和載流子注入——之間的微妙競爭導致了不同偏壓區域不同的發光現象。基于對上述兩種激發機制以及對系統其它潛在激發態的定量分析,研究團隊首次提出了以自旋三重態作為中間過渡態,同時結合非彈性電子散射和載流子注入兩種激發過程的單分子上轉換發光機制。

  陳功與駱陽為這篇文章的共同第一作者。該系列研究工作得到基金委、科技部、中科院、教育部、安徽省等的支持。

  論文鏈接

 

  圖注:(a) STM誘導單分子電致發光的實驗構型示意圖;(b) 三種不同偏壓下單分子電致發光光譜,展示了單分子的上轉換發光現象;(c) 單分子電致發光強度的偏壓依賴關系。




(責任編輯:葉瑞優)

附件:

專題推薦

相關新聞


© 1996 - 中國科學院 版權所有 京ICP備05002857號  京公網安備110402500047號  聯系我們

地址:北京市三里河路52號 郵編:100864

GO彩www.fei27.com www.855892.com | www.817699.com | www.30392.com | www.590030.com | www.971316.com | 057895.com | www.38gl.com | www.3897.bid | www.025903.com | www.770862.com | www.887946.com | www.0793.net | www.03805.com | www.044833.com | www.330883.com | www.566342.com | www.796648.com | 366908.com | www.95ng.com | www.153712.com | www.650313.com | www.838886.com | 176307.com | www.56.com | www.98rx.com | www.110627.com | www.347258.com | www.662627.com | 315785.com | www.279561.com | www.457317.com | www.909145.com | 199486.com | www.96926.cc | www.790902.com | www.772799.com | www.cr30.com | www.7170.cc | www.154458.com | www.584015.com | www.580933.com | www.804830.com | www.954973.com | 96407.com | www.9316.biz | www.075373.com | www.330190.com | www.711986.com | 953760.com | www.cp2829.com | www.3620.me | www.87jh.com | www.33874.com | www.22399.cc | www.16el.com | www.186579.com | www.958472.com | www.917508.com | www.99cq.com | 凤凰彩票www.88266g.com | www.360222.com | www.413819.com | cp2828.com | www.ux43.com | www.ax78.com | www.036782.com | www.133428.com | www.588860.com | www.795115.com | 103699.com | 659874.com | www.235269.com | www.754669.com | 494403.com | www.xp85.com | www.86li.com | www.52670.com | www.516473.com | www.637161.com | 222419.com | 811965.com | www.3763.cc | www.72991.com | www.729228.com | www.828949.com | www.878651.cc | www.042002.com | www.559506.com | www.191055.com | www.309378.com | www.921328.com | www.813294.com | 753732.com | www.20nv.com | www.4871.biz | www.6510.shop | www.133587.com | www.618546.com | 593266.com | 彩掌柜www.czg1.com | www.ps59.com | www.7572.com | www.89637.com | www.101585.com | www.027963.com | www.357104.com | www.409160.com | 彩客网www.530255.com | 大赢家彩票平台www.985026.com | 8号彩票www.81520r.com | www.219981.com | www.237488.com | www.501310.com | www.575168.com | www.303335.com | www.436053.com | www.871130.com | 328906.com | 82nj.com | 易旺彩票www.ywzuqiu.com | www.13yz.com | www.0311.space | www.18860.com | www.060366.com | www.252517.com | www.560787.com | www.643298.com | 4199.biz | cai9995.com | 大赢家彩票网www.544092.com | www.dl17.com | www.69fb.cc | www.16405.com | www.066389.com | www.136159.com | www.356650.com | www.905452.com | 146748.com | www.fd26.com | www.350944.com | 926913.com | 857947.com | www.591114.com | www.649135.com | www.165384.com | www.bu77.com | www.4484.vip | www.127415.com | www.gq73.com | 279207.com | www.365488.com | www.423856.com | www.09ez.com | www.xr00.com | www.zs52.com | www.4555.xyz | www.352620.com | www.042655.com | 500彩票www.50054f.com | www.846152.com | www.787770.com | www.031480.com | www.de05.com | 金掌柜www.83993b.com | www.730664.com | www.130662.com | www.9272.cc | 405441.com | www.568587.com | www.35139.cc | www.206578.com | www.264546.com | www.990640.com | 网易彩票www.092wy.com | www.795222.com | www.321421.com | www.039033.com | www.40ab.com | www.896284.com | www.15xe.com | www.0846.xyz | www.465065.com | www.449945.com | www.383781.com | www.905323.com | 豪彩VIPwww.6fk.com | www.id11.com | www.931501.com | www.187098.com | www.75.net | www.1559.biz | www.538953.com | www.35144.com | www.4031.cm | 260809.com | www.443806.com | www.2302.com | www.657117.com | 世彩堂www.5854o.cc | www.su38.com | www.no02.com | www.14zo.com | www.2327.biz | www.017192.com | www.732797.com | 23336.com | 740338.com | 7610.vip | 28vm.com | www.ch96.com | www.12em.com | www.43vi.com | www.756.me | www.221837.com | www.312485.com | www.485008.com | 974246.com | www.533102.com | 财神网www.29277n.com | 老彩票www.772701.com | www.k37.top | 600万彩票www.679822.com | www.cz14.com | www.403311.com | www.670631.com | www.692339.com | www.727960.com | 500万彩票www.35155q.com | www.ba24.com | www.78yd.com | www.5978.me | www.003005.cc | www.279372.com | www.368979.com | www.874554.com | 224691.com | 131179.com | 166469.com | www.nn56.com | www.94at.com | www.62617.cc | www.320163.com | www.875844.com | 899251.com | 博友彩www.442428.com | www.hv7.com | www.20iy.com | www.73ws.com | www.22389.com | www.58248.com | 011354.com | 18W彩票www.308139.com | www.1034.xyz | www.001451.com | www.939695.com | www.973665.com | www.984081.com | 188764.com | 749106.com | 19201.com | fv20.com | www.cp4777.com | www.ow74.com | www.6396.top | www.6813.org | www.63005.com | www.205922.com | www.314499.com | www.484811.cc | 358490.com | 708640.com | www.33gj.com | www.94sz.com | www.14wk.com | www.12995.cc | www.559.hk | www.088391.com | www.126218.com | www.573876.com | www.70506.com | www.397648.com | www.711446.com | www.694864.com | www.770681.com | www.860607.com | www.yi30.com | www.wc88.com | www.10.la | www.a23.biz | www.vc8.com | www.00ok.cc | www.28929.com | www.05ya.com | www.938666.com | www.858383.com | 55458.com | 045612.com--139234.com | www.no69.com | www.uj33.com | www.62pw.com | www.157298.com | www.181951.com | www.630302.com | 469195.com | 680702.com | 784678.com | 826641.com | www.ti27.com | www.kp96.com | www.82ei.com | www.776.pw | www.937088.com | 314017.com | 496114.com | 121842.com | www.fm92.com | www.yu3.cc | www.006897.com | www.198085.com | www.296197.com | www.179071.com | www.662906.com | bn8.com | www.bz47.com | www.fh44.com | www.2047.net | www.006806.com | www.306708.com | www.h19.me | www.94hs.com | www.52er.com | www.1116.pw | www.116977.com | www.811363.com | www.fi58.com | www.3020.cm | www.083018.com | www.988876.com | 000740.com | www.967596.com | 127418.com | 21108.com | 071772.com | www.994722.com | 937091.com | 237461.com | 068783.com | 52442.cc | www.968287.com | 411157.com | 514483.com | PK彩票www.www.23040.com | www.955419.com | 丰彩娱乐www.fcyl3.com | 380655.com | www.9gm.com | www.27lq.com | 天天中彩票www.839565.com | 趣彩网www.qucp6.com | 乐彩网www.758786.com | www.71qj.com | www.0875.date | www.2412.tv | www.021398.com | www.65622.com | www.124114.com | www.768078.com | www.653259.com | 505808.com | 500彩票www.66653j.com | 亿彩堂www.87668e.com | 880543.com | 848928.com | 210632.com | www.96jm.com | www.023210.com | www.59ei.com | www.jf66.com | www.531.site | www.665637.com | www.582577.com | www.659240.com | www.500899.cc | www.922510.com | www.961605.com | 335013.com | 939496.com | 551142.com | 199584.com | 365540.cc | www.871416.com | www.446686.com | www.195633.com | www.26xd.com | 246686.com | www.128847.com | www.460020.com | www.172165.com | www.449780.com | www.910042.com | www.800188.cc | www.686631.com | www.418338.com | www.650899.com | www.971009.com | 004232.com | www.921527.com | www.dr9.com | 070539.com | www.zr83.com | www.16kn.com | www.35qi.com | www.97400.com | www.344999.cc | www.378065.com | www.654801.com | www.773256.com | www.693252.com | 352563.com | www.a66.pw | www.24117.com | www.523212.com | www.ue15.com | 479401.com | 588044.com | 6036.biz | www.993646.com | 093955.com | 933724.com | 047913.com | 025443.com | www.837513.com | 537126.com | www.938222.com | www.759273.com | 263891.com | 895248.com | www.cai5554.com | 361952.com | 915975.com | www.au21.com | www.2yt.com | www.dp10.com | www.066664.com | www.105122.com | www.489858.com | www.713851.com | 866594.com | www.yn93.com | www.rw39.com | www.fa68.com | www.210938.com | www.179168.com | www.048809.com | www.5220.cn | www.435.cm | www.581772.com | www.680472.com | 286551.com | 617733.com | 739060.com | www.058970.com | www.176326.com | www.076140.com | www.227001.com | www.303526.com | www.235068.com | www.413951.com | JJ彩票www.11201.cc | 356524.com | 422719.com | www.8990.net | www.895788.com | www.6908.cm | www.7676.pro | www.877669.com | 034925.com | www.800402.com | www.972303.com | www.mh72.com | www.jw81.com | www.wa68.com | www.xa50.com | www.kg69.com | www.365200.cc | www.c93.club | 349438.com | 902331.com | 902409.com | www.674199.com | www.wy.com | 587007.com | www.32ir.com | www.sx38.com | 356282.com | 640338.com | www.388484.com | www.989383.com | 962416.com | 293823.com | www.zl16.com | 324721.com | www.649.bid | www.659740.com | www.153615.com | www.160755.com | www.317283.com | www.207229.com | www.501334.com | www.313100.com | www.593588.com | www.149208.com | www.729406.com | 840064.com | 545506.com | www.xm93.com | www.081707.com | www.738044.com | www.571952.com | www.373606.com | www.cp637.com | 553796.com | www.06rj.com | www.528801.com | www.361244.com | www.396515.com | www.435005.com | www.356046.com | www.wh95.com | 678749.com | 亿彩堂www.87668r.com | www.6ci.com | www.731594.com | www.587381.com | www.758658.com | 639554.com | www.814198.com | www.812091.com | www.764097.com | 846590.com | www.17332.cc | www.122387.com | www.332615.com | www.874153.com | 全民乐彩票www.2934l.com | 683019.com | 152192.com | 675932.com | 809269.com | www.fn6.com | www.uc11.cc | www.lh15.com | www.44013.com | www.99464.com | www.074000.com | www.665007.com | www.818575.com | 971666.com | www.0264.xyz | www.d11.org | www.g49.xyz | www.pt36.com | www.020989.com | www.026451.com | www.229181.com | www.819478.com | 055693.com | www.2233.me | 008944.com | www.702499.com | www.987082.com | 06982.com | www.jx38.com | www.eq33.com | www.5328.cm | www.10je.com | www.37682.cc | www.0rp.com | www.hk11.com | 乐博彩票www.483864.com | 806259.com | 967484.com | www.73267.com | www.024896.com | www.zu14.com | 916910.com | 大赢家彩票平台www.131873.com | www.3398.cn | www.50xs.cc | www.693.website | www.76785.cc | www.085072.com | www.68272.cc | www.3758.tv | www.18659.cc | www.428847.com | www.777241.com | www.628009.com | 498850.cc | www.cai5955.com | www.1081.vip | www.88434.cc | www.442.cc | www.069260.com | www.407567.com | www.484618.com | www.178538.com | www.387888.cc | www.503152.com | www.264044.com | www.657420.com | 196466.com | www.242415.com | www.hk20.com | 770975.com | www.486030.com | www.1455.cc | www.271986.com | www.60yh.com | www.5bg.com | 66902.cc | 7685.biz | www.587215.com | www.817.cm | www.mb6.com | www.332665.com | www.399277.com | www.788875.com | www.672373.com | 红旗彩票www.39957g.com | www.50qh.com | www.b44.net | www.99jr.com | www.cm.com | www.6400.club | www.23gt.com | www.610510.com | www.325853.com | www.2448.net | www.035171.com | www.304646.com | www.102924.com | www.070918.com | www.184821.com | www.391390.com | 大赢家彩票www.328806.com | www.94798.com | www.5568.gg | www.246634.com | www.023948.com | www.388586.com | www.607762.com | 234065.com | www.535623.com | www.520446.com | www.398017.com | 539586.com | www.713089.com | www.739623.com | www.951089.com | www.733551.com | www.810477.com | www.642321.com | www.653110.com | 566356.cc | www.288052.com | www.167081.com | www.6333.net | www.44450.cc | www.wf0.com | 614140.com | 567412.com | www.d27.top | www.763915.com | www.800663.com | www.138006.com | www.411261.com | www.976240.com | 083937.com | www.22574.com | www.zg38.com | www.057620.com | www.224422.cc | www.770035.com | www.sv73.com | www.009045.com | www.673023.com | www.2119.cm | www.331074.com | www.579409.com | www.748268.com | www.135380.com | www.167887.com | www.2572.pw | www.061322.com | www.420883.com | www.505502.com | www.381211.com | www.539586.com | www.929386.com | www.969711.com | 682312.com | 761124.com | 390575.com | www.640888.com | www.200707.com | www.541.net | 255087.com | www.645998.com | www.93pu.com | www.2212.com | www.111576.cc | 611152.com | 173935.com | www.21277.cc | 971574.com | www.365365.com | www.181258.com | 购彩网www.85gcw.com | www.ji24.com | www.5334.org | www.141503.com | www.63896.cc | www.150137.com | www.289949.com | www.313670.com | www.498008.com | www.495221.com | www.206387.com | 8349.biz | www.654162.com | 864499.com | www.987189.com | www.532916.com | www.2079.me | 225284.com | 343537.com | www.777601.com | www.642941.com | 110721.com | www.74jq.com | www.cai5944.com | www.10pt.com | www.009182.com | www.29if.com | 彩乐乐www.cll168.com | www.585.tv | 199421.com | www.774161.com | www.080507.com | 558474.com | 087077.com | www.603872.com | www.165149.com | www.150056.com | www.01sc.com | 362415.com | www.708097.com | www.784338.com | 大赢家彩票平台www.577983.com | www.822992.com | www.373832.com | www.402188.com | 323972.com | 751475.com | www.084277.com | www.4959.com | www.cp0108.com | 626769.com | www.057103.com | www.339677.com | www.387108.com | www.81ym.com | 954785.com | 大赢家彩票平台www.375967.com | 948610.com | www.485364.com | www.235076.com | www.vj28.com | www.5752.biz | www.58lj.com | www.90931.com | www.232762.com | www.276464.com | www.256530.com | www.32611.com | www.3404.cm | www.1881.top | www.129416.com | www.543712.com | www.609777.com | www.00120.cc | www.8266.cm | www.050987.com | www.204073.com | www.299730.com | www.461622.com | www.621506.com | www.324.blue | 397864.com | www.763667.com | 654195.com | www.1231.site | www.6785.net | 313829.com | www.599209.com | www.974791.com | www.111973.com | 彩宝www.cb2788.com | 328043.com | www.298231.com | 华人彩票www.040426.com | www.940504.com | www.516733.com | www.2478.cm | www.2130.live | 网易彩票www.060wy.com | www.667691.com | TT彩票www.526051.com | 895801.com | www.925257.com | www.pl87.com | 4za.cc | www.929136.com | www.40yv.com | www.024958.com | www.86922.cc | www.952474.com | www.997153.com | www.763125.com | www.606209.com | www.750485.com | 129497.com | www.946682.com | www.949349.com | www.699835.com | www.22265.com | www.6031.vip | www.49al.com | www.548335.com | 778113.com | www.711716.com | www.234685.com | www.22yx.cc | www.820094.com | www.61227.cc | www.192117.com | 051319.com | www.997428.com | www.821562.com | 223666.com | www.748963.com | www.150105.com | www.138725.com | www.500614.com | www.351285.com | www.090777.com | www.92233.com | www.us89.com | 40fa.com | www.908.net | www.g68.club | 082037.com | 984215.com | www.95978.com | www.8523.wang | www.mf46.com | www.ol93.com | www.q91.com | www.2841.win | www.mt22.com | www.5300.xyz | www.968.cm | www.mk61.com | 800794.com | www.356032.com | www.792671.com | www.529060.com | www.778835.com | www.ci19.com | www.735481.com | www.657252.com | www.618202.com | www.267600.com | www.503222.com | www.709138.com | www.505594.com | www.952577.com | www.686668.cc | www.919667.com | www.365018.cc | www.640580.com | www.683683.com | 590367.com | www.fg41.com | www.vx8.com | www.655599.com | www.872626.com | www.871189.com | www.505324.com | www.663844.com | www.435055.com | www.69707.com | www.300096.cc | www.109939.com | www.yo0.com | www.46wh.com | www.12326.com | www.219412.com |