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Although carbon dots (CDs) have been widely investigated as the fluorescence material, research on room temperature phosphorescence (RTP) CDs is still limited. In this work, diethylenetriaminepentaacetic acid (DTPA) was employed as the raw material to synthesize carbon quantum dots (denoted as CQDs-1) by a hydrothermal method. The resulting CQDs-1 inherited CO groups and N atoms from DTPA, which promoted the formation of triplet excitons under light excitation. On this basis, the CQDs-1 were dispersed in a poly-(vinyl alcohol) (PVA) matrix to prepare CQDs-1-PVA composites that exhibited an optimal emission peak at ∼466 nm and emitted the visible afterglow lasting for 8 s. Moreover, tartaric acid (TA) was combined with DTPA as the raw material to synthesize CQDs-2, which induced the formation of π–π conjugated areas in CQDs. As a result, the emission wavelength was slightly red-shifted, and the duration time of afterglow of the CQDs-2-PVA composite was increased to 9 s. Due to the ultralong-lifetime RTP properties of the CQDs-based composites, their applications in the fields of information encryption and anticounterfeiting have also been investigated. Overall, our work offered a convenient avenue for the synthesis of high-quality RTP CQDs. [ABSTRACT FROM AUTHOR]

Background: Crohn's disease (CD) is a chronic inflammatory disease of the gastrointestinal tract, often requiring intestinal resection as a common treatment. However, recurrence after surgery is common. The anastomotic configuration after bowel resection appears to be associated with the recurrence of CD. Previous studies have suggested that the Kono-S anastomosis may help to reduce the recurrence rate. However, the results remain controversial. Therefore, evidence-based evidence is needed to prove the advantages of Kono-S anastomosis., Aim: To measure the influence of anastomosis techniques on the long-term relapse rate of CD by conducting a meta-analysis., Methods: PubMed, Scopus, and Cochrane Library were searched until October 8, 2023. Patients who underwent intestinal resection due to CD were included. The intervention measures included Kono-S anastomosis, whereas the control group received traditional anastomosis such as end-to-end, end-to-side, and side-to-side anastomosis. Only randomized clinical trials and observational studies were included. The primary outcome measures were hospital stay post-surgery, overall postoperative complication incidence, the proportion of Clavien-Dindo grade IIIa or higher, overall postoperative recurrence rate, and Rutgeerts score., Results: From 2011 to 2023, six articles met the inclusion and exclusion criteria. The results indicated that Kono-S anastomosis can reduce the hospital stay post-surgery of patients with CD [MD = -0.26, 95%CI: -0.42 to -0.10, P = 0.002] than other traditional anastomosis methods. Compared to other traditional anastomosis methods, Kono-S anastomosis can significantly reduce the total recurrence rate [MD = 0.40, 95%CI: 0.17 to 0.98, P = 0.05] and postoperative Rutgeerts score [MD = -0.81, 95%CI: -0.96 to -0.66, P < 0.001] in patients with CD. However, there is no significant disparity in the overall occurrence of postoperative complications and the proportion of Clavien-Dindo ≥ IIIa., Conclusion: Kono-S anastomosis has the potential to expedite the recuperation of CD and diminish relapse hazards; however, additional larger trials are necessary to authenticate its effectiveness., Competing Interests: Conflict-of-interest statement: Dr. Shen has nothing to disclose., (©The Author(s) 2024. Published by Baishideng Publishing Group Inc. All rights reserved.)