This invited article provides a useful summary of the development of Metal-organic frameworks (MOFs) (Volume 33, Issue 4, Page number 1647–1649) for pollutant detection in water and water purification reported in Chinese Chemical Letters in the past five years. As the article only covers work published in Chinese Chemical Letters and was published as an Editorial with a full reference list, the reference list inevitably includes many self-citations to the journal. Self-citations typically contribute to the journal's performance in citation-based metrics such as the CiteScore™ and Journal Impact Factor™. Although Chinese Chemical Letters publishes hundreds of articles that are cited thousands of times each year - so the positive impact of these self-citations is very small indeed - the journal has decided that in future all invited summaries that only focus on articles published in Chinese Chemical Letters will be published as annotated bibliography articles and will not include reference lists.