Thermal stability of a fullerene-amine adduct

被引：25

作者：

Janaki, J ^{[1
]}

Premila, M ^{[1
]}

Gopalan, P ^{[1
]}

Sastry, VS ^{[1
]}

Sundar, CS ^{[1
]}

机构：

[1] Indira Gandhi Ctr Atom Res, Div Mat Sci, Kalpakkam 603102, Tamil Nadu, India

来源：

THERMOCHIMICA ACTA | 2000年 / 356卷 / 1-2期

关键词：

fullerene-amine adduct; thermal elimination;

D O I：

10.1016/S0040-6031(00)00477-9

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A fullerene-diethylamine adduct has been prepared by an addition reaction at room temperature and is characterized by FTIR, UV-VIS Spectroscopy, X-Ray Diffraction and HPLC techniques. After repeated recrystallisation from hexane the purified adduct has been studied by Thermogravimetry and Differential Scanning Calorimetry. Thermal Analysis and associated characterisation studies indicate that on heating the adduct undergoes an elimination reaction, i.e., the secondary amine which adds on to C(60) at room temperature is eliminated between 100 and 650 degrees C. This leads to the formation of the retro product C(60) which has been characterized by spectroscopic studies on quenched samples. Kinetics studies indicate that in contrast to the addition reaction which is fast (almost instantaneous) the elimination reaction is sluggish and the process is associated with an activation energy of only 12-13 kJ mol(-1). Possible reasons for this unusual kinetic behaviour are suggested. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：109 / 116

页数：8

共 24 条

[11] Amination of buckminsterfullerene C-60 at low temperature: Application in polyamide synthesis [J].

Hwu, JR ;

Kuo, TY ;

Chang, TM ;

Patel, HV ;

Yong, KT .

FULLERENE SCIENCE AND TECHNOLOGY, 1996, 4 (03) :407-422

[12]

MALHOTRA R, 1992, ACS SYM SER, V481, P127

[13]

Narasimha Rao G. V., 1996, POWDER DIFFR, V11, P200, DOI DOI 10.1017/S088571560000912X

[14] X-ray diffraction and thermoanalytical investigations of amorphous carbons derived from C-60 [J].

Nisha, JA ;

Janaki, J ;

Sridharan, V ;

Padma, G ;

Premila, M ;

Radhakrishnan, TS .

THERMOCHIMICA ACTA, 1996, 286 (01) :17-24

[15] DETERMINATION OF THE KINETICS AND MECHANISM OF A SOLID-STATE REACTION - A SIMPLE APPROACH [J].

PHADNIS, AB ;

DESHPANDE, VV .

THERMOCHIMICA ACTA, 1983, 62 (2-3) :361-367

[16] SOLVENT EFFECTS ON THE ABSORPTION MAXIMA OF FULLERENES C-60 AND C-70 [J].

RENGE, I .

JOURNAL OF PHYSICAL CHEMISTRY, 1995, 99 (43) :15955-15962

[17] An overview of fullerene chemistry [J].

Samal, S ;

Sahoo, SK .

BULLETIN OF MATERIALS SCIENCE, 1997, 20 (02) :141-230

[18]

SCHRADER B, RAMAN IR ATLAS ORGAN, V1, pA708

[19] INTERACTION OF C-60 AND C-70 WITH AROMATIC-AMINES IN THE GROUND AND EXCITED-STATES - EVIDENCE FOR FULLERENE BENZENE INTERACTION IN THE GROUND-STATE [J].

SESHADRI, R ;

RAO, CNR ;

PAL, H ;

MUKHERJEE, T ;

MITTAL, JP .

CHEMICAL PHYSICS LETTERS, 1993, 205 (4-5) :395-398

[20]

SESHADRI R, 1993, FULLERENE SCI TECHN, V1, P547

← 1 2 3 →