NMR and Raman characterization of pressure polymerized C-60

被引：91

作者：

Persson, PA

Edlund, U

Jacobsson, P

Johnels, D

Soldatov, A

Sundqvist, B

机构：

[1] UMEA UNIV,DEPT APPL PHYS & ELECT,S-90187 UMEA,SWEDEN

[2] UMEA UNIV,DEPT ORGAN CHEM,S-90187 UMEA,SWEDEN

[3] NATL ACAD SCI UKRAINE,INST LOW TEMP PHYS & ENGN,KHARKOV,UKRAINE

来源：

CHEMICAL PHYSICS LETTERS | 1996年 / 258卷 / 5-6期

关键词：

D O I：

10.1016/0009-2614(96)00743-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Bulk C-60 has been treated at 1.1 GPa and 550-585 K, producing a dense insoluble material which on heating to above 600 K reverts to normal C-60. Raman and IR studies on modified material show a large number of new lines, and the Raman pentagon pinch mode shifts from 1469 to 1458 cm(-1) as on photopolymerization. MAS NMR shows one broadened line at the original C-60 Shift 144 ppm and a small peak at about 77 ppm due to the bridging carbons. None of the new resonances observed for C-60 polymerized by other methods were observed. The results verify previously suggested polymeric structures where the fullerene cages are connected by four-membered rings.

引用

页码：540 / 546

页数：7

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