Flocculates of Au nanoparticles in catalysis

1. Flocculates of Au nanoparticles in catalysis NMSL – nanoAu and catalysis B. Y. Wang, J. H. Chen

2. Nanoparticle：AuNS-L-Pd • Goal • Catalytic reaction within nanoparticle flocculates • Experiment • Cyclotrimerization of 3-hexyne in chloroform at r.t. Dispersed in DMSO 取出上層 Dispersed in CHCl3 靜置 + DMSO Sub-micron Flocculates B. Y. Wang, J. H. Chen

3. Results Dispersed in CHCl3 Upper Soln (C) (D) (A) (B) Aging (A) (B) Dispersed in DMSO (D) (A) (A) + DMSO 157±23 nm B. Y. Wang, J. H. Chen

4. Results Dispersed in CHCl3 (C) (D) (A) (A) (B) Upper Soln Aging (C) (A) (B) Dispersed in DMSO (B) (C) + DMSO B. Y. Wang, J. H. Chen

5. Catalysis of different types B. Y. Wang, J. H. Chen

6. Catalytic results • 1 c.c. CDCl3; 0.075 mmol reactant; R.T. ; Stir rate: 300 rpm B. Y. Wang, J. H. Chen

7. Richard Wang

8. 507-Pd毒化實驗 8.6 8.2 L-Pd L-Pd L+L-Pd+thiol L+L-Pd L B. Y. Wang, J. H. Chen

9. Sample 1 攪拌前後光譜變化 8.6 8.2 攪拌後 攪拌前 B. Y. Wang, J. H. Chen

10. B. Y. Wang, J. H. Chen

11. Sample G B. Y. Wang, J. H. Chen

12. Sample 1 B. Y. Wang, J. H. Chen

13. 反應系統 • Heck reaction • Reactioncondition：115 oC for 1.5 hr Need Pd 1x10-7 mol Pd: 0.001 mol% NEt3 0.375 ml Bp: 88.8 oC; 0.25 ml DMSO 10 mmol 0.355 ml Bp: 160 oC; MW: 128; D: 0.899 g/ml 10 mmol 0.278 ml Bp: 182 oC; MW: 203; D: 1.823 g/ml Richard Wang

14. 反應系統 • Cyclotrimerization • Reactioncondition：r.t. for 0.5 hr Need Pd 3x10-6 mol Pd: 4 mol% 0.075 mmol 8.52 ml Bp: 81 oC; MW: 82.14; D: 0.723 g/ml 1 ml CHCl3、THF Richard Wang

15. RAW DATA B. Y. Wang, J. H. Chen

16. A-1 B. Y. Wang, J. H. Chen

17. B-1 B. Y. Wang, J. H. Chen

18. A-2 B. Y. Wang, J. H. Chen

19. B-2 B. Y. Wang, J. H. Chen

20. C. AuNS-L-Pd

21. D. AuNS-L

22. D. AuNS-L-Pd

23. F. AuNS-L

24. F. AuNS-L-Pd

25. G. AuNS-L-Pd

26. H. AuNS-L

27. H. AuNS-L-Pd

28. 1. L-AuNS-L-Pd B. Y. Wang, J. H. Chen