Helical architectures with adjustable helical parameters and chiroptical functions are expected to play a fundamental role in biomedicine and nanoscience fields but is still in its early stage of study. Herein, chiral phenylalanine-derived hydrogelators (DG1 and LG1) can self-assemble into left-handed or right-handed helical nanofibrous hydrogels. Achiral carbon dots with different charges are co-assembled with DG1 or LG1 through electrostatic interactions and hydrogen bonds, helical supramolecular hydrogels with controllable helical pitch and diameter are readily obtained. Typically, the co-assembled hydrogels show both circular dichroism (CD) and circularly polarized luminescence (CPL) signals in the absorption regions. The nanofibers with the largest helical pitch and smallest diameter show the highest luminescence dissymmetry g-factors (g_lum) up to -3.80 × 10⁻³, which are able to efficiently differentiate between left and right circularly polarized light. This work not only paves a universal method to obtain chiral helical nanostructures with adjustable pitch and diameter, but also shines light on these advanced helical nanostructures for potential applications in chiroptical detectors.

具有可调螺旋参数和手性光学功能的螺旋结构有望在生物医学和纳米科学领域发挥重要作用，但仍处于早期研究阶段。在此，手性苯丙氨酸衍生的水凝胶剂（D G1 和L G1）可以自组装成左旋或右旋螺旋纳米纤维水凝胶。具有不同电荷的非手性碳点被共同组装d G1或大号G1通过通过静电相互作用和氢键，很容易获得具有可控螺距和直径的螺旋超分子水凝胶。通常，共组装的水凝胶在吸收区显示圆二色性 (CD) 和圆偏振发光 (CPL) 信号。具有最大螺距和最小直径的纳米纤维显示出最高的发光不对称性g因子 ( g _lum ) 高达 -3.80 × 10 ^-3，能够有效区分左右圆偏振光。这项工作不仅为获得具有可调节距和直径的手性螺旋纳米结构铺平了道路，而且为这些先进的螺旋纳米结构在手性光学检测器中的潜在应用提供了启示。