A Highly Strained All‐BODIPY‐Based Nanohoop
Abstract
ABSTRACT Highly strained π‐conjugated nanohoops present significant synthetic challenges but offer interesting platforms for exploring unique physical properties. Here, we report the synthesis of β‐β directly connected strained cyclic boron‐dipyrromethene (BODIPY) tetramer— [4]CBDP , with its structure unambiguously confirmed by single‐crystal X‐ray diffraction. Importantly, the radially conjugated architecture narrows the HOMO‐LUMO gap, yielding panchromatic absorption spanning the visible spectrum with an edge extending into the NIR‐I window, and resulting in a large Stokes shift (77 nm). Computational results indicate that [4]CBDP exhibits a high strain energy of 155 kcal/mol; yet it remains stable under ambient conditions (air/light) in both solution and the solid state.
Article Details
Authors (9)
Bing Yuan
Songshan Lake Materials Laboratory
Fangming Zhao
Hefei National Research Center for Physical Sciences at the Microscale, Department of Chemical Physics
Jinyi Wang
Department of Chemistry, and the Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction
Nan Yin
Wen Zhang
Meng Zhou
Xinyu Zhang
Zheng Zhou
Interdisciplinary Materials Research Center, School of Materials Science and Engineering
Pingwu Du
State Key Laboratory of Precision and Intelligent Chemistry Collaborative Innovation Center of Chemistry for Energy Materials (<i>i</i>ChEM) School of Chemistry and Materials Science University of Science and Technology of China Hefei China