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Effect of C 70 rotation on the photoluminescence spectra of compressed C 70 *mesitylene
Author(s) -
Du Mingrun,
Yao Mingguang,
Chen Shuanglong,
Sundqvist Bertil,
Yang Xigui,
Liu Ran,
Liu Bo,
Zou Bo,
Cui Tian,
Liu Bingbing
Publication year - 2017
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.5042
Subject(s) - photoluminescence , mesitylene , raman spectroscopy , diamond anvil cell , fullerene , chemistry , emission spectrum , spectral line , absorption (acoustics) , analytical chemistry (journal) , absorption spectroscopy , intercalation (chemistry) , chemical physics , materials science , high pressure , inorganic chemistry , optics , organic chemistry , optoelectronics , thermodynamics , physics , benzene , astronomy , composite material
The efficient photoluminescence (PL) emission of solvated fullerenes has attracted significant interest because of their potential applications. Uncovering the possible factors that govern the PL emission of solvated fullerenes thus becomes important for the purpose of application. Here, we report a high pressure study on a typical solvated fullerene, C 70 *mesitylene, using the diamond anvil cell technique with associated spectroscopic measurements. Our Raman and PL spectra show that there is a change in the pressure dependence for the normalized PL intensity in solvated samples during the rotational transition. It indicates that the rotational state of C 70 is a critical factor which can influence the PL emission of solvated samples. The optical absorption (OA) spectra further suggest that the C 70 –C 70 interactions in solvated samples compared with those in desolvated samples are hindered under pressure because of the intercalation of solvent, which makes the PL emission in solvated samples more sensitive to the change in C 70 rotations under pressure. Copyright © 2016 John Wiley & Sons, Ltd.