Electrogenerated chemiluminescence (ECL) of Ru(bpy)₃²⁺ was studied at a MoS₂ nanosheets modified glassy carbon electrode (MoS₂NS/GCE) in neutral condition. Electrochemical results revealed that MoS₂ nanosheets could significantly catalyze the electrochemical oxidation of Ru(bpy)₃²⁺, as a result, strong anodic ECL was obtained. Several impact factors, such as the modified amount of MoS₂ nanosheets suspension, the pH value, and the concentration of Ru(bpy)₃²⁺, were investigated to obtain the optimal experimental condition. Dopamine exhibited apparent inhibiting effect on ECL intensity of Ru(bpy)₃²⁺-MoS₂ nanosheets through energy transfer process, and could be sensitively detected in the range of 1.0 × 10⁻⁹ to 1.0 × 10⁻⁴ mol L⁻¹. The linear equation between the decrease of ECL intensity and the logthium of dopamine concentration was determined as ΔI = 9965.02 + 1077.03lgC (C in mol L⁻¹), with the detection of 8.5 × 10⁻¹⁰ mol L⁻¹ (3σ). The modified electrode exhibited satisfactory sensitivity, selectivity, and stability, which can be used to detect dopamine in real samples.

在中性条件下，在MoS ₂纳米片修饰的玻碳电极（MoS ₂ NS / GCE）上研究了Ru（bpy）₃ ^2+的电化学发光（ECL）。电化学结果表明，MoS ₂纳米片可以显着催化Ru（bpy）₃ ²⁺的电化学氧化，从而获得强阳极ECL。研究了MoS ₂纳米片悬浮液的改性量，pH值和Ru（bpy）₃ ²⁺的浓度等影响因素，以获得最佳实验条件。多巴胺对Ru（bpy）_3的ECL强度表现出明显的抑制作用²⁺ -MoS ₂纳米片通过能量转移过程，可以在1.0×10 ^-9至1.0×10 ^-4  mol L ^-1范围内灵敏地检测到。测定ECL强度的降低与多巴胺浓度的对数之间的线性方程为ΔI＝ 9965.02 + 1077.03lgC（C以mol L ^-1表示），检测为8.5×10 ^-10  mol L ^-1（3σ）。修饰电极具有令人满意的灵敏度，选择性和稳定性，可用于检测实际样品中的多巴胺。