配位体的C - O - C红外伸缩振动频率向红移，提供了两者发生配位的迹象。
The red shift of C-O-C stretching vibration frequencies of IR reveals that the coordination interaction may take place.
光学性质显示退火处理的薄膜吸收边缘明显的向长波的方向移动，发生红移现象，而且禁带宽度减少了0。
It also showed that the optical absorption edge of the annealed film appeared shifted towards the longer wavelength side and the band gap decreased by 0.
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