It is quite clear that there is a shift of the maximum during UV irradiation and this could be an argument of only a re absorption effect. Why the authors did not try to measure the fluorescence of keto form by measuring fluorescence with 400 nm excitation.
这是一个审稿人给的建议，补一个建议，意思是解释不全面，可我看不懂这是什么意思，我做的是光致变色材料，keto form是样品的最终状态，忘各位高手指点，任何关于这方面的信息都可以，万分感谢
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