Affiliation:
1. State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 P. R. China
2. College of Chemistry Fuzhou University Fuzhou 350002 China
3. University of Chinese Academy of Sciences Beijing 100049 China
Abstract
AbstractWhile the construction of a donor‐acceptor (D‐A) structure has gained great attention across various scientific disciplines, such structures are seldomly reported within the field of hydrogen‐bonded organic frameworks (HOFs). Herein, a D‐A based HOF is synthesized, where the adjacent D‐A pairs are connected by hydrogen bonds instead of the conventionally employed covalent bonds. This structural feature imparts material with a reduced energy gap between excited state and triplet state, thereby facilitating the intersystem crossing (ISC) and boosting the generation rate of single oxygen (quantum yield = 0.98). Consequently, the resulting material shows high performance for antimicrobial photodynamic therapy (PDT). The impact of D‐A moiety is evident when comparing this finding to a parallel study conducted on an isoreticular HOF without a D‐A structure. The study presented here provides in‐depth insights into the photophysical properties of D‐A pair in a hydrogen‐bonded network, opening a new avenue to the design of innovative materials for efficient PDT.
Funder
National Natural Science Foundation of China