Rhodamine-azobenzene based single molecular probe for multiple ions sensing: Cu2+, Al3+, Cr3+ and its imaging in human lymphocyte cells

被引：34

作者：

Mabhai, Subhabrata ^{[1
]}

Dolai, Malay ^{[2
]}

Dey, Surya Kanta ^{[3
]}

Dhara, Anamika ^{[4
]}

Choudhury, Sujata Maiti ^{[3
]}

Das, Bhriguram ^{[5
]}

Dey, Satyajit ^{[5
]}

Jana, Atanu ^{[6
]}

机构：

[1] Mahishadal Raj Coll, Dept Chem, Mahishadal 721628, W Bengal, India

[2] Prabhat Kumar Coll, Dept Chem, Contai 721401, Purba Medinipur, India

[3] Vidyasagar Univ, Dept Human Physiol Community Hlth, Medinipur 721102, W Bengal, India

[4] Jadavpur Univ, Dept Chem, Raja SC Mallick Rd, Kolkata 700032, India

[5] Tamralipta Mahavidyalaya, Dept Chem, East Midnapore 721636, W Bengal, India

[6] UNIST, Sch Nat Sci, Dept Chem, Ctr Superfunct Mat, Ulsan 44919, South Korea

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2019年 / 219卷

关键词：

Rhodamine; Azobenzene; Chemosensor; PET; CHEF; ON FLUORESCENCE CHEMOSENSOR; DENSITY-FUNCTIONAL THEORY; SPECTROSCOPIC PROPERTIES; SELECTIVE RECOGNITION; EXCITATION-ENERGIES; CRYSTAL-STRUCTURE; SENSOR; HG2+; APPROXIMATION; STATES;

D O I：

10.1016/j.saa.2019.04.056

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

A photoinduced electron transfer (PET) and chelation-enhanced fluorescence (CHEF) regulated rhodamineazobenzene chemosensor (L) was synthesized for chemoselective detection of Al3+, Cr3+, and Cu2+ by UV-Visible absorption study whereas Al3+ and Cr3+ by Iluorimetric study in EtOH-H2O solvent. L showed a clear fluorescence emission enhancement of 21 and 16 fold upon addition of Al3+ and Cr3+ due to the 1:1 host-guest complexation, respectively. This is first report on rhodamine-azobenzene based Cr3+ chemosensor. The complex formation, restricted imine isomerization, inhibition of PET (photo-induced electron transfer) process with the concomitant opening of the spirolactam ring induced a turn-on fluorescence response. The higher binding constants 6.7 x 10(3) M-1 and 3.8 x 10(3) M-1 for Al(3+ )and Cr3+, respectively and lower detection limits 1 x 10(-6)M and 2 x 10(-6) M for Al3+ and Cr3+, respectively in a buffered solution with high reversible nature describes the potential of L as an effective tool for detecting Al3+ and Cr3+ in a biological system with higher intracellular resolution. Finally, L was used to map the intracellular concentration of Al3+ and Cr3+ in human lymphocyte cells (HLCs) at physiological pH very effectively. Altogether, our findings will pave the way for designing new chemosensors for multiple analytes and those chemosensors will be effective for cell imaging study. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：319 / 332

页数：14

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