9-N-substituted novel berberine derivative for selective and sensitive nanomolar level fluorometric detection of human hemoglobin: A synthesis, sensing and interaction study

被引：4

作者：

Nayim, Sk ^{[1
]}

Jana, Gopal Chandra ^{[1
]}

Aktara, Mt Nasima ^{[1
]}

Khatun, Munira ^{[1
]}

Dhal, Asima ^{[1
]}

Beg, Maidul ^{[1
]}

Sahoo, Nandan Kumar ^{[1
]}

Maji, Anukul ^{[1
]}

Hossain, Maidul ^{[1
]}

机构：

[1] Vidyasagar Univ, Dept Chem, Midnapore 721102, W Bengal, India

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2021年 / 321卷

关键词：

Highly fluorescent berberine derivative; Hemoglobin detection; Static quenching; Time-correlated single photon counting technique; Real sample application; QUANTUM DOTS; CARBON DOTS; IONIC LIQUID; ELECTROCHEMICAL SENSOR; FACILE SYNTHESIS; PROTEIN; PROBE; PHOTOLUMINESCENCE; NANOBIOSENSOR; RECOGNITION;

D O I：

10.1016/j.molliq.2020.114741

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Quantitative determination of hemoglobin (Fib) level is an obligatory part of diagnostic proceedings and an undisputed health index for a number of chronic diseases. In this study, we have tried to introduce a new 9-N-substituted berberine analogue (BR-N) as a triumphant fluorescent sensor for aptly selective and extremely sensitive nanomolar detection of Hb. The probe was found to endure a rampant quenching in its highly intensified inherent fluorescence emission with successive addition of Hb. Though, the other available proteins and biomolecules were proved to be failure in causing any significant change in fluorescence of BR-N under equivalent experimental condition. Again, the sensitivity of the probe was such that it provided an astonishing detection limit of 0.41 nM having linearity range 1-70 nM. Noteworthy, the presence of Hb caused significant alternation in the nature of the intrinsic fluorescence curve of the probe which was also a differentiating aspect during Hb identification. Experiments revealed that ground state probe-protein complex formation was behind the reduction of fluorescence intensity through static quenching mechanism. The interaction study unearthed the binding constant value to be 2.8 x 10(5) M-1. Moreover, the probe was also successful when applied in real samples for quantitative Hb determination which spoke for its reliable practical utility in the field of clinical diagnosis from today onwards. (C) 2020 Elsevier B.V. All rights reserved.

引用

页数：10