本論文主要藉由光譜之變化，剖析正烷基胺和正烷基硫醇與硒化鎘表面作用狀態。我們利用化學膠體法製備硒化鎘奈米粒子，紫外可見光光譜儀、螢光光譜儀、X光粉末繞射儀作光學性質及結晶性之鑑定。正烷基胺和正烷基硫醇為吸附物，去修飾硒化鎘表面。低濃度的正烷基胺能增強PL強度，而正烷基硫醇會導致PL強度焠滅。胺類使吸收和放射光譜都出現藍移，硫醇分子造成紅移發生。硒化鎘溶液加入正烷基胺有助於鈍化硒化鎘表面，它的頭端基能提供電子給金屬離子形成的懸空鍵，減少表面缺陷。正烷基硫醇與粒子作用，則會造成缺陷放光增加。對於配位基與奈米粒子作用情形，我們也建立Langmuir 模型求出吸附鍵結常數。以電子效應解釋其表面反應機制，正烷基胺有較強的供電子能力，使生成的反鍵結軌域提升至硒化鎘LUMO之上，消除了電子捕捉態。正烷基硫醇不傾向供給電子，無法消除捕捉態。

We studied influence on alkylamine and alkanethiol surface of CdSe through the variation of optical spectra. We Prepared CdSe nanoparticles were synthesized by using chemical colloidal method. The optical properties and crystallinity of CdSe are monitored by UV-Visible spectroscopy, Fluorescent spectrophotometer and X-ray powder diffractometer. Alkylamine and alkanethiol as adsorbates to modify surface of CdSe. Alkylamines enhance the CdSe photoluminescence(PL) and thiol quench CdSe PL. Amines induce a blue shift in both absorption and emission spectra and, while thiols cause a red shift. Alkylamine could effectively passivate surface of CdSe, its headgroup donate electrons to dangling bonds of metal ion(Cd2+), which led to decrease the surface defects. The results also presented here that show the deep trap emission enhancement from alkanethiol interaction with CdSe. We also use Langmuir model to estimate adsorption binding constants for the Ligand interaction with surface of nanoparticle. Mechanism for the electronic properties of surface. Alkylamine have stronger electron donating ability to form antibonding orbital above LUMO of CdSe, which means that eliminate the electron trap state but alkanethiol does not tend to donate electrons that which cannot eliminate the trap states.

1 林鴻明。奈米材料之結構與特性。取自大同大學，奈米科技教學網站
http://nano.mse.ttu.edu.tw/index.htm

2 E. Roduner, Nanosciences and nanotechnologies-physics and
chemistry of nanostructures：Why Nano is different

3 Carolina Carrillo-Carrión, Sofrrfledad Cárdenas, Bartolomé M. Simonet and Miguel Valcárcel. Chem. Commun., 2009, 5214-5226

4 C. B. Murray, D. J. Norris and M. G. Bawendi, J. Am. Chem. Soc., 1993, 115, 8706

5 X. Peng, J. Wickham and A. P. Alivisatos, J. Am. Chem. Soc., 1998, 120, 5343

6 W. W. Yu, L. Qu, W. Guo and X. Peng, Chem. Mater., 2003, 15, 2854

7 W. W. Yu, Y. A. Wang and X. Peng, Chem. Mater., 2003, 15, 4300

8 Z. A. Peng and X. Peng, J. Am. Chem. Soc., 2001, 1389

9 W. W. Yu and X. Peng, Angew. Chem., Int. Ed., 2002, 41, 2368

10 W. W. Yu, J. C. Falkner, B. S. Shih and V. L. Colvin, Chem. Mater., 2004, 16, 3318

11 C. de Mello Donegá, P. Liljeroth and D. Vanmaekelbergh, Small, 2005, 1, 1152

12 L. Qu and X. Peng, J. Am. Chem. Soc., 2002, 124, 2049

13 W. W. Yu, E. Chang, R. Drezek and V. L. Colvin, Biochem. Biophys. Res. Commun., 2006, 348, 781

14 N. Gaponik, D. V. Talapin, A. L. Rogach, K. Hoppe, E. V. Shevchenko, A. Kornowski, A. Eychmuller and H. Weller, J. Phys. Chem. B, 2002, 106, 7177

15 L. Rogach, T. Franzl, T. A. Klar, J. Feldmann, N. Gaponik, V. Lesnyak, A. Shavel, A. Eychmüller, Y. P. Rakovich and J. F. Donegan, J. Phys. Chem. C, 2007, 111, 14628

16 X. H. Ji, D. Copenhaver, C. Sichmeller, and X. G. Peng , J. Am.Chem. Soc., 2008, 130, 5726–5735

17 A. M. Munro and D. S. Giner, Nano Lett., 2008, 8, 2585-2590

18 C. Landes, C. Burda, M. Braun, and M. A. El-Sayed, J. Phys. Chem. B, 2001, 105, 2981-2986

19 G. Kalyuzhny and R. W. Murray, J. Phys. Chem. B, 2005, 109, 7012-7021

20 A. M. Munro, Ilan Jen-La Plante, M. S. Ng, and D. S. Ginger,J. Phys. Chem. C ,2007, 111, 6220-6227

21 Talapin, D. V.; Rogach, A. L.; Kornowski, A.; Haase, M.; Weller,H. Nano Lett., 2001, 1, 207

22 S. F. Wuister, C. D. Donega, A. Meijerink, J. Phys. Chem. B, 2004, 108, 17393.

23 J. Aldana,N. Lavelle, Y. J. Wang, X. G. Peng, J. Am. Chem. Soc., 2005 ,127, 2496- 2504

24 Bullen, C.; Mulvaney, P. Langmuir, 2006, 22, 3007-3013

25 A. P. Alivisatos, J. Phys. Chem., 1996, 100, 13226-13239

26 林鴻明、林中魁(民90年11月)。奈米科技應用研究與展望。工業材料，179，84-91。

27 E. Roduner, Chem. Soc. Rev.,2006, 35, 583-592

28 X. G. Peng, M. C. Schlamp, Andreas V. Kadavanich, and A. P. Alivisatos, J. Am. Chem. Soc., 1997, 119, 7019-7029

29 C. B. Murray and C. R. Kagan, Annu. Rev. Mater. Sci., 2000. 30:545–610

30 S. Gullapalli, A. R. Barron, Optical Properties of Group 12-16(Ⅱ-Ⅵ)Semiconductor Nanoparticles

31 G. Kickelbick, 2007, Hybrid Materials: Synthesis, Characterization and Applications, Wiley-VCH, Weinheim

32 Retrieved from http://chemistry.rutgers.edu/grad/chem.585/lecture2.html

33 國立台灣大學物理學系。半導體光激發螢光頻譜實驗。Retrieved from http://web.phys.ntu.edu.tw/asc/FunPhysExp/ModernPhys/exp/

34 Standard for Measuring Quantum Yield by Nanoco Technologies Ltd.

35 S. Lowry, M. W. Allen, Measuring the Sensitivity of a Fluorescence, Spectrometer, Thermo Fisher Scientific, Madison, WI, USA

36 G. A. Richard, 2010, Bragg's Law and Diffraction: How waves reveal the atomic structure of crystals. Retrieved from http://skuld.bmsc.washington.edu/~merritt/bc530/bra
gg/

37 林麗娟(民83年2月)。X光繞射原理及其應用。工業材料，86，105。

38 C. J. Murphy and J. L. Coffer, Appl. Spectrosc.,2002, 56, 16A-27A

39 V. Albe, C. Jouanin, D. Bertho, Phys. ReV. B: Condens. Matter Mater. Phys., 1998, 58, 4713–4720.

40 K. Nose, H. Fujita,T. Omata, S. Otsuka-Yao-Matsuo, H. Nakamura, H. Maeda, J. Lumin., 2007, 127, 21–26

41 P. Guyot-Sionnest, M. Shim, C. Matranga, M. Hines, Phys. ReV. B:Condens. Matter Mater. Phys. 1999, 60, R2181–R2184

42 K. E. Knowles, D. B. Tice, E. A. McArthur, G. C. Solomon, and E. A. Weiss, J. AM. CHEM. SOC. 2010, 132, 1041–1050

43 李國希 譯(2005)。吸附科學(原作者近藤精一、石川達雄、安部郁夫)。化學工業出版社。

44 A. J. Morris-Cohen, V. Vasilenko, Victor A. amin, Matthew G. Reuter, and E. A. Weiss, ACS Nano, 2012, 6, 557–565

45 D. R. Baker and P. V. Kamat, Langmuir, 2010, 26 , 11272–11276

46 S. N. Sharma, Z. S. Pillai, and P. V. Kamat, J. Phys. Chem. B, 2003, 107, 10088-10093

47 S. Gullapalli, A. R. Barron, Optical Characterization of Group 12-16 (II-VI) Semiconductor Nanoparticles by Fluorescence Spectroscopy, Connexions module: m34656

48 M. Kuno, J. K. Lee, B. O. Dabbousi, F. V. Mikulec, and M. G. Bawendi, J. Chem. Phys.,1997, 106, 9869

49 C. Landes, M. Braun, C. Burda, and M. A. El-Sayed, Nano Lett., 2001, 1, 667–670

50 奈米物理/化學特性。Retrieved from
http://www.iaa.ncku.edu.tw/~aeromems/Nanotech/ch2_2.pdf

51 劉建良。量子點合成介紹。取自http://www.ch.ntu.edu.tw/~rsliu/pdf96/material/3_report.pdf