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Kinetic Barrier Against Standing Up of Pentacene Molecules Upon a Pentacene Monolayer
Author(s) -
Zhang Lei,
Huo Shuchun,
Fu Xing,
Hohage Michael,
Sun Lidong
Publication year - 2018
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201800230
Subject(s) - pentacene , monolayer , molecule , materials science , annealing (glass) , substrate (aquarium) , chemical physics , kinetic energy , self assembled monolayer , spectroscopy , analytical chemistry (journal) , photochemistry , chemistry , nanotechnology , thin film transistor , organic chemistry , layer (electronics) , physics , quantum mechanics , oceanography , geology , composite material
The growth of pentacene thin films on Cu(110)‐(2 × 1)O surface was investigated in situ and in real time using reflectance difference spectroscopy (RDS). Deposition at a substrate temperature of 230 K results in a lying‐down orientation for all pentacene molecules. Subsequent annealing to a temperature of 350 K induces reorientation for molecules above the first monolayer into a standing‐up configuration. By a quantitative analysis on the corresponding evolution of the RD signals, the kinetic barrier of 970 ± 150 meV has been deduced for the reorientation of pentacene molecule.