近日，中国科学院化学所林禹泽团队研究了面向高性能有机异质结光催化剂的高极化嵌入界面。这一研究成果于2026年2月25日发表在《德国应用化学》杂志上。

有机光伏催化剂在能源转换和环境净化领域具有巨大潜力，但其性能常受限于激子解离效率低和电荷快速复合的问题——尤其在无序的给体/受体界面，这严重制约了其光催化效率。

研究组提出一种嵌入式界面策略，在有机光伏催化剂体相异质结的给体/受体界面引入高极化率分子Y6CO-S，通过增强局域电场和分子有序性，有效提升空穴转移效率并延长空穴极化子寿命，从而显著增强光催化活性。优化后的PM6:PYF-T-o:Y6CO-S纳米颗粒在模拟太阳光（AM 1.5G，100 mW cm^-2）照射10小时条件下，展现出卓越的光催化析氢性能：在不同纳米颗粒浓度下，质量比析氢速率达263.8-1974.7 mmol h^-1 g^-1，面积比析氢速率达42.7-182.4 mmol h^-1 m^-2；同时在整个可见光至近红外区域保持超过10%的外量子效率，较不含Y6CO-S嵌入式界面的二元PM6:PYF-T-o体系提升36%-47%，创下光催化剂领域的领先性能纪录。

该研究揭示了嵌入式界面策略在开发高性能异质结有机光伏催化剂及其他光电器件领域的巨大应用潜力。

附：英文原文

Title: Highly Polarizable Embedded Interfaces Toward Superior Organic Heterojunction Photocatalysts

Author: Tengfei Li, Wenqin Si, Ruijie Zheng, Kang Wang, Ye Yang, Yuze Lin

Issue&Volume: 2026-02-25

Abstract: Organic photovoltaic catalysts (OPCs) hold great potential for energy conversion and environmental purification yet often suffer from inefficient exciton dissociation and rapid charge recombination, particularly at disordered donor/acceptor (D/A) interfaces, limiting their photocatalytic performance. Herein, we propose an embedded interface strategy that involves a highly polarizable molecule named Y6CO-S at the D/A interface within OPC bulk heterojunction (BHJ) to amplify the local electric field and enhance molecular ordering, improving hole transfer efficiency and prolonging hole polaron lifetime, and thereby boosting photocatalytic activity. Specifically, the optimized PM6:PYF-T-o:Y6CO-S nanoparticles (NPs) achieve remarkable photocatalytic sacrificial average mass-united/area-united hydrogen evolution rates of 263.8-1974.7 mmol h1 g1 and 42.7-182.4 mmol h1 m2 at varied NP concentrations under simulated sunlight (AM 1.5G, 100 mW cm2) for 10 h along with high external quantum efficiencies of >10% across the visible to near-infrared region, 36%–47% exceeding those of the binary PM6:PYF-T-o system without Y6CO-S embedded interface and representing one of the highest performances reported to date for photocatalysts. This work demonstrates the significant potential of embedded interface strategy in developing highperformance heterojunction OPCs as well as other optoelectronic applications.

DOI: 10.1002/anie.3278432

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.3278432