Education

PhD, University of Georgia (1990)
BS, Fu Jen Catholic University (1983)   

Professional Experience

Research Interest

Ultrafast Chemistry、Physical Chemistry

Publications

1. Peng-Yun Wang, Yu-Cheng Hsu, Pin-Hsun Chen, Guan-Yu Chen, Yi-Kai Liao and Po-Yuan Cheng*, “Solvent-polarity dependence of ultrafast excited-state dynamics of trans-4-nitrostilbene” Phys. Chem. Chem. Phys. Phys. 26, 788–807 (2024).
2. J. W. Ho and P. Y. Cheng*, “Ultrafast excited-state dynamics of gas-phase 5-methylcytosine tautomers” J. Chin. Chem. Soc. 69, 107 (2022).
3. J. Y. Wu and Po-Yuan Cheng* “Ultrafast Protonation of an Amide: “Photoionization-Induced Proton Transfer in Phenol-Dimethylformamide Complex Cation” J. Phys. Chem. A 123, 10700-10713 (2019).
4. S. C. Wei, J. W. Ho, H.C. Yen, H. Q. Shi, L. H. Cheng, C. N. Weng, W. K. Chou, C. C. Chiu, and P. Y. Cheng* “Ultrafast Excited-State Dynamics of Hydrogen-Bonded Cytosine Microsolvated Clusters with Protic and Aprotic Polar Solvents” J. Phys. Chem. A 122, 9412 (2018).
5. C. C. Shen, T. T. Tsai, J. Y. Wu, J. W. Ho, Y. W. Chen, and P. Y. Cheng* “Watching proton transfer in real time: Ultrafast photoionization-induced proton transfer in phenol-ammonia complex cation” J. Chem. Phys. 147, 164302 (2017).
6. C. C. Chiu, C. C. Hung, and P. Y. Cheng* “Ultrafast Charge Recombination Dynamics in Ternary Electron Donor–Acceptor Complexes: (Benzene)₂-Tetracyanoethylene Complexes” J. Phys. Chem. B 120, 12390-12403 (2016).
7. J. W. Ho, H. C. Yen, H. Q. Shi, L. H. Cheng, C. N. Weng, W. K. Chou, C. C. Chiu, and P. Y. Cheng* “Microhydration Effects on the Ultrafast Photodynamics of Cytosine: Evidences for a Possible Hydration-Site Dependence” Angew. Chem. Int. Ed. 54, 14772-14776 (2015).
8. C. C. Chiu, W. C. Chen, P. Y. Cheng* “Excited-state vibrational relaxation and deactivation dynamics of trans-4-(N,N-dimethylamino)-4’-nitrostilbene in nonpolar solvents studied by ultrafast time-resolved broadband fluorescence spectroscopy” J. Photochem. Photobiology A 310, 26-32 (2015).
9. C. C. Shen, T. T. Tsai, J. W. Ho, Y. W. Chen, and P. Y. Cheng* “Ultrafast Time-Resolved Ion Photofragmentation Spectroscopy of Photoionization-Induced Proton Transfer in Phenol-Ammonia Complex” J. Chem. Phys. 141, 171103 (2014).
10. C. C. Chiu, C. C. Hung, C. L. Chen, and Po-Yuan Cheng* “Ultrafast Time-Resolved Broadband Fluorescence Studies of the Benzene-Tetracyanoethylene Complex. Solvation, Vibrational Relaxation, and Charge Recombination Dynamics” J. Phys. Chem. B 117, 9734-9756 (2013).
11. J. W. Ho, H. C. Yen, W. K. Chou, C. N. Weng, L. H. Cheng, H. Q. Shi, S. H. Lai, and P. Y. Cheng* “Disentangling Intrinsic Ultrafast Excited-State Dynamics of Cytosine Tautomers” J. Phys. Chem. A 115, 8406-8418 (2011).
12. Ho, J.W.; Chen. W.K.; Cheng, P.Y. “Femtosecond pump-probe photoionization-photofragmentation spectroscopy of azobenzene cation” Sci. China Ser. G-Phys. Mech. Astron. 53, 1045 (2010).
13. J. W. Ho, W. K. Chen, and P. Y. Cheng, “Femtosecond pump-probe photoionization-photofragmentation spectroscopy: Photoionization-induced twisting and coherent vibrational motion of azobenzene cation,” J. Chem. Phys. 131, 134308 (2009).
14. J. W. Ho, W. K. Chen, and P. Y. Cheng, “Unraveling Complex Three-Body Photodissociation Dynamics of Dimethyl Sulfoxide: a Femtosecond Time-Resolved Spectroscopic Study,” J. Phys. Chem. A 112, 10453 (2008).
15. J. W. Ho, W. K. Chen, and P. Y. Cheng, “A direct observation of a concerted two-bond breaking reaction” J. Am. Chem. Soc. 129, 3784 (2007).
16. H. Y. Chen, I. R. Lee, and P. Y. Cheng, “Gas-phase femtosecond transient absorption spectroscopy,” Rev. Sci. Instrum. 77, 076105 (2006).
17. P. Y. Cheng, J. S. Baskin, and A. H. Zewail, “Dynamics of clusters: From elementary to biological structures,” Proc. Natl. Acad. Sci. USA 103, 10570 (2006).
18. W. K. Chen, J. W. Ho, and P. Y. Cheng, “Isotope effects in the ultrafast photodissociation of acetone 3s Rydberg state excited at 195 nm” Chem. Phys. Lett. 415, 291 (2005).
19. W. K. Chen and P. Y. Cheng, “Ultrafast photodissociation dynamics of acetone at 195 nm (II): Unraveling complex three-body dissociation dynamics by femtosecond time-resolved photofragment translational spectroscopy,” J. Phys. Chem. A 109, 6818 (2005).
20. W. K. Chen, J. W. Ho, and P. Y. Cheng, “Ultrafast Photodissociation Dynamics of Acetone at 195 nm (I): Initial-state, intermediate, and product temporal evolutions by femtosecond mass-selected multiphoton ionization spectroscopy,” J. Phys. Chem. A 109, 6805 (2005).
21. W. K. Chen, J. W. Ho, and P. Y. Cheng, “Ultrafast photodissociation dynamics of the acetone 3s Rydberg state at 195 nm: a new mechanism,” Chem. Phys. Lett. 380, 411 (2003).
22. C. Su, J. Y. Lin, R. M. Hsieh, and P. Y. Cheng, “Coherent vibrational motion during the excited-state intramolecular proton transfer in o-hydroxyacetophenone,” J. Phys. Chem. A 106, 11997 (2002).
23. X. P. Hong, W. K. Chen, and P. Y. Cheng, ”Ultrafast photodissociation dynamics of cyanobenzene near the ionization threshold,” Chem. Phys. Lett. 350, 495 (2001).
24. I. R. Lee, Y. C. Chung, W. K. Chen, X. P. Hong, and P. Y. Cheng, ”Femtosecond probing of photodissociation dynamics in acyl cyanides,” J. Chem. Phys. 115, 10656 (2001).
25. I. R. Lee, W. K. Chen, Y. C. Chung, and P. Y. Cheng, “A direct observation of non-RRKM behavior in femtosecond photophysically activated reactions,” J. Phys. Chem. A, 104, 10595 (2000).
26. C. Lu, R.-M. R. Hsieh, I. R. Lee, and P. Y. Cheng, “Ultrafast dynamics of gas-phase excited-state intramolecular proton transfer in 1-hydroxy-2-acetonaphthone,” Chem. Phys. Lett. 310, 103 (1999).