Chemically selective raising and rolling of oil-droplets underwater: an equipment-free chemical sensing method,Chemical Communications

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Chemically selective raising and rolling of oil-droplets underwater: an equipment-free chemical sensing method
Chemical Communications ( IF 4.3 ) Pub Date : 2023-05-16 , DOI: 10.1039/d3cc01540h
Angana Borbora ₁ , Jaysri Das ₁ , Uttam Manna _{1,

2,

3}

Affiliation

A dual chemically reactive multilayer coating is rationally subjected to mono- and dual-functionalization through a 1,4-conjugate addition reaction at ambient conditions to depict the raising of the oil contact angle and rolling of a beaded oil-droplet underwater, respectively, only in the presence of targeted toxic chemicals (e.g. nitrite ion and hydrazine). Rational switching of the hydrophobic aromatic moiety into a hydrophilic moiety in the modified multilayer coatings via selected modified Griess reaction and Schiff base reaction contributed to the desired change in underwater oil-wettability and oil-adhesion. Eventually, this approach allowed equipment-free and naked-eye chemical sensing with high selectivity and sensitivity.

中文翻译：

水下油滴的化学选择性扬起和滚动：一种无需设备的化学传感方法

双化学反应性多层涂层在环境条件下通过 1,4-共轭加成反应合理地进行单官能化和双官能化，以分别描述油接触角的提高和水下珠状油滴的滚动。存在目标有毒化学物质（例如亚硝酸根离子和肼）的情况下。通过选择性的改良格里斯反应和希夫碱反应，将改性多层涂层中的疏水性芳香族部分合理地转换为亲水性部分，有助于水下油润湿性和油粘附性的预期变化。最终，这种方法实现了无需设备且具有高选择性和灵敏度的裸眼化学传感。

更新日期：2023-05-16

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