Dr. Jiing-Chyuan Lin (Advanced Materials and Surface Science)
Latest Research Work
The advent of scanning tunneling microscopy (STM) has permitted a detailed atomic view of organic molecules adsorbed on solid surfaces. In this work, we make use of the STM to provide an unprecedented direct single-molecule perspective on the cis−trans photoisomerization of stilbene molecules within ordered monolayers physisorbed on the Ag/Ge(111)−(√3×√3)R30° surface. The STM view of the molecular structure transformation upon irradiation provides direct evidence for the generally accepted one-bond-flip mechanism proposed for the photoisomerization process. We also find that the surface environment produces a profound effect on the reaction mechanism. The reaction is observed to proceed mainly through pairs of co-isomerizing molecules situated at domain boundaries. To explain these observations, we propose a mechanism whereby excitation migrates to the domain boundary and the reaction occurs through a biexciton reaction pathway.
Now at:
People / Faculty / Jiing-Chyuan Lin
Copyright©2012 Institute of Atomic and Molecular Sciences, Academia Sinica
|
Mobile Version
Address: No. 1, Roosevelt Rd., Sec. 4, Taipei, 106319, Taiwan
P.O. Box 23-166 Taipei National Taiwan University, Taipei City, 106923, Taiwan
Tel: 886-2-2362-0212 Fax:886-2-2362-0200 E-mail:
iamspublic@gate.sinica.edu.tw
Latest update 2024-04-29 09:18:43