Solution equilibrium between two structures of Perylene-F2TCNQ charge transfer co-crystals

被引：9
|
作者：
Salzillo, Tommaso [1 ,2 ,3 ,4 ]
Della Valle, Raffaele Guido [1 ,2 ]
Venuti, Elisabetta [1 ,2 ]
Kociok-Kohn, Gabriele [5 ]
Masino, Matteo [6 ,7 ]
Girlando, Alberto [6 ,7 ]
Brillante, Aldo [1 ,2 ]
机构：
[1] Univ Bologna, Dipartimento Chim Ind Toso Montanari, Viale Risorgimento 4, I-40136 Bologna, Italy
[2] INSTM UdR Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
[3] Inst Ciencia Mat Barcelona ICMAB CSIC, Dept Mol Nanosci & Organ Mat, Campus UAB, Bellaterra 08193, Spain
[4] CIBER BBN, Campus UAB, Bellaterra 08193, Spain
[5] Univ Bath, CCAF, Bath BA2 7AY, Avon, England
[6] Univ Parma, Dipartimento Sci Chim Vita & Sostenibil Ambiental, Parco Area Sci, I-43124 Parma, Italy
[7] Univ Parma, INSTM UdR Parma, Parco Area Sci, I-43124 Parma, Italy
来源：
JOURNAL OF CRYSTAL GROWTH | 2019年 / 516卷
关键词：
Growth from solutions; Raman spectroscopy; Charge transfer complex; Lattice phonons; ORGANIC SEMICONDUCTORS; RAMAN; POLYMORPHS; SPECTRA; COMPLEX; TTF;
D O I：
10.1016/j.jcrysgro.2019.03.026
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
We report on the solution growth of the two known structures of Perylene-F(2)TCNQ charge transfer complexes. The transformation accompanied by a marked morphological change from needle 1:1 to platelet 3:2 crystal structure is observed in the mother liquor. Lattice phonon Raman spectroscopy is used for an easy structure identification of the different morphologies before and after the process. X-ray and lattice phonons spectra of reference samples obtained by physical vapor transport is used to identify the two complexes. A fully spectroscopic analysis of the intramolecular Raman modes is presented to estimate the degree of ionicity, which is found to agree with the value previously reported.
引用
收藏
页码：45 / 50
页数：6
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