Specific recognition of Cr3+ under physiological conditions by allyl substituted appendage rhodamine and its cell-imaging studies,Dalton Transactions

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Specific recognition of Cr3+ under physiological conditions by allyl substituted appendage rhodamine and its cell-imaging studies
Dalton Transactions ( IF 3.5 ) Pub Date : 2017-11-06 00:00:00 , DOI: 10.1039/c7dt03560h
Anup Kumar Bhanja _{1,

2,

3,

4} , Snehasis Mishra _{4,

5,

6,

7} , Kaushik Naskar _{1,

2,

3,

4} , Suvendu Maity _{1,

2,

3,

4} , Krishna Das Saha _{4,

5,

6,

7} , Chittaranjan Sinha _{1,

2,

3,

4}

Affiliation

An allyloxynitrophenylimio-propylhydroxyl appended rhodamine (RD-3) specifically recognises Cr³⁺ in aqueous buffer medium at pH 7.4. The visible light excitable reagent (λ_ex 505 nm) on selective binding to Cr³⁺ exhibited a strong fluorescence turn-on response with powerful emission at 557 nm and the tail of this luminescence band is extended to ∼650 nm. Interference studies confirm that other metal ions (27 ions) do not hamper the detection process of Cr³⁺. The sensing mechanism is studied by absorption, fluorescence, Job's plot, and ¹H NMR titration studies. The detection limit is as low as 33 nM. The practical applicability of RD-3 is examined for imaging Cr(III) ions in HCT116 (human colorectal carcinoma) cells.

中文翻译：

烯丙基取代的若丹明在生理条件下对Cr ^3+的特异性识别及其细胞成像研究

附加有烯丙氧基硝基苯基亚氨基-丙基羟基的若丹明（RD-3）可以在pH 7.4的水性缓冲介质中特异性识别Cr ³⁺。可见光光可激发试剂（λ _EX 505纳米）上的选择性结合的Cr ³⁺显示出强荧光导通响应与557纳米发射强大并且该发光带的尾部延伸到~650纳米。干扰研究证实，其他金属离子（27个离子）不会妨碍Cr ³⁺的检测过程。通过吸收，荧光，Job's图和¹ H NMR滴定研究研究了感测机理。检测限低至33 nM。RD-3的实际适用性检查HCT116（人类结肠直肠癌）细胞中的Cr（III）离子成像。

更新日期：2017-11-20

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