2021, Vol. 32 
Citation
Publisher's note: Regarding the page gap between issue 4 and issue 5[J]. Chin. Chem. Lett., 2021, 32(11): 3652-3652 
Publisher's note: Regarding the page gap between issue 4 and issue 5
The publisher regrets that there is a page gap (2 pages) between issue 4 and issue 5 due to some typesetting mistakes.
The publisher would like to apologise for any inconvenience caused.