In:
Small, Wiley, Vol. 18, No. 19 ( 2022-05)
Abstract:
Long‐lived room temperature phosphorescence (RTP) materials are widely utilized in the field of biological and chemical sensing, due to their unique characteristics of long‐lived luminescence and no background autofluorescence. However, the realization of full‐color RTP in aqueous solution still remains a great challenge. Herein, a feasible strategy for achieving high stability and full‐color RTP of carbon dots (CDs)‐based composite materials in aqueous environment is reported by constructing a rigid hydrogen bonds’ network. The obtained m,p‐CDs@CA composite materials exhibit deep‐blue RTP with phosphorescence quantum yield of 23.2% and lifetime of 1.74 s, and the afterglow can last for over 12 s. More importantly, the m,p‐CDs@CA composite materials are desirable in the detection of biomarkers, because of excellent stability, dispersion, and long‐lived RTP properties. The m,p‐CDs@CA suspension also displays excellent sensitivity, and a limitation of detection as low as 5.61 and 550 n m for biomarkers 5‐hydroxyindole‐3‐acetic acid (HIAA) and serotonin (5‐hydroxytryptamine, HT), respectively. Meanwhile, the sensing performance exhibits excellent selectivity even in the presence of other competitive species in blood plasma and urine. With superior selectivity, the long‐lived phosphorescence probe based on m,p‐CDs@CA suspension can be as an effective biomarker for carcinoid identification, which has potential application in clinical analysis.
Type of Medium:
Online Resource
ISSN:
1613-6810
,
1613-6829
DOI:
10.1002/smll.202201223
Language:
English
Publisher:
Wiley
Publication Date:
2022
detail.hit.zdb_id:
2168935-0
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