Conductive metal–organic frameworks are an emerging class of three-dimensional architectures with degrees of modularity, synthetic flexibility and structural predictability that are unprecedented in other porous materials. However, engendering long-range charge delocalization and establishing synthetic strategies that are broadly applicable to the diverse range of structures encountered for this class of materials remain challenging. Here, we report the synthesis of K _x Fe₂(BDP)₃ (0 ≤ x ≤ 2; BDP²⁻ = 1,4-benzenedipyrazolate), which exhibits full charge delocalization within the parent framework and charge mobilities comparable to technologically relevant polymers and ceramics. Through a battery of spectroscopic methods, computational techniques and single-microcrystal field-effect transistor measurements, we demonstrate that fractional reduction of Fe₂(BDP)₃ results in a metal–organic framework that displays a nearly 10,000-fold enhancement in conductivity along a single crystallographic axis. The attainment of such properties in a K _x Fe₂(BDP)₃ field-effect transistor represents the realization of a general synthetic strategy for the creation of new porous conductor-based devices.

导电金属有机框架是一类新兴的三维结构，具有模块化程度，合成柔韧性和结构可预测性，这在其他多孔材料中是空前的。然而，引起远距离电荷离域并建立广泛适用于此类材料遇到的各种结构的合成策略仍然具有挑战性。这里，我们报告K的合成_X的Fe ₂（BDP）₃（0≤  X  ≤2; BDP ^2-  = 1,4-苯二吡唑酸酯），在母体框架内表现出完全的电荷离域化，并且电荷迁移率可与技术上相关的聚合物和陶瓷媲美。通过一系列的光谱学方法，计算技术和单微晶场效应晶体管测量，我们证明了Fe ₂（BDP）_3的分数还原会导致金属-有机骨架，沿着金属导体显示出近10,000倍的电导率增强。单晶轴。在K _x Fe ₂（BDP）₃场效应晶体管中达到这样的性能代表了用于创建新的基于多孔导体的器件的通用合成策略的实现。