Halogen‐Bond Coupled Halogenated‐π‐Conjugation Enables Giant Birefringence in Hydrogen‐Bonded Organic Frameworks
Fujian Normal University · Fujian Institute of Research on the Structure of Matter
Abstract
ABSTRACT Birefringent crystals are essential optical materials for modulating and detecting the polarization state of light. However, achieving large optical anisotropy remains a significant challenge, mainly because it is difficult to rationally align anisotropic fundamental building blocks (FBBs) to maximize their collective contribution. Here, we propose a halogen‐bond (XB) coupled halogenated‐π‐conjugation strategy. Using hydrogen‐bonded pyridinedicarboxylic acid as a template, we synthesized XOF‐1 , Hybrid‐XOF‐1 , and XB‐HOF‐1 through decarboxylation‐halogenation reactions. All three compounds are built from 0D halogen‐bonded FBBs and extended by halogen and/or hydrogen bonds. Notably, all three compounds…
Citation impact
- FWCI
- 15.85
- Percentile
- 99%
- References
- 67
Authors
7Topics & keywords
- Birefringence
- Anisotropy
- Polarization (electrochemistry)
- Optical anisotropy
- Perpendicular
- Halogen