Spectroscopic study on the photoinduced reaction of fullerene C60 with aliphatic amines and its dynamics--strong short wavelength fluorescence from the adducts.
The photoinduced electron donor acceptor interactions of C60 with eight kinds of aliphatic amines, namely dicthylamine (DEA), triethylamine (TEA), tri-n-amylamine (TAA), propylethylamine (PPA), n-butylamine (BTA), n-heptylamine (HPA) and dodecylamine (DDA) and ethylenediamine (EDA) are reported by a comprehensive spectroscopic study. Experiments show that there is a good discipline with different structure and the length of n-alkyl group both in their ground and excited states. At the same time, a slow reaction takes place between C60 and various amines with a gradual increase in the concentration of various aliphatic amines or the standing of solution, which can be dramatically catalyzed by UV-radiation. The final products can all emit a strong fluorescence at the relatively shorter wavelength around 519 nm. On this basis, the dynamic properties of C60/aphaliticamines including the enthalpy of activation (deltaH++et) and entropy activation (deltaS++et), together with all sorts of influence factors are firstly investigated in this work. The possible reaction mechanisms are explored, also.
Qiao
J L
JL
Department of Chemistry, Shanxi University, Taiyuan, PR China.
Gong
Q J
QJ
Du
L M
LM
Jin
W J
WJ
D000588:Amines / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry*; D037741:Fullerenes; D010777:Photochemistry; D017319:Photosensitizing Agents / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013053:Spectrophotometry; D013329:Structure-Activity Relationship
D000588:Amines; D037741:Fullerenes; D017319:Photosensitizing Agents; D002244:Carbon; C069837:fullerene C60