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Exploiting benzilic acid as a modular template: controlling photoreactivity and solid to liquid transition during
Mollah Rohan Ahsan1, Lavanya Singh1, Harshit Varma1
1Department of Chemistry, Birla Institute of Science and Technology (BITS) Pilani, Hyderabad campus, Hyderabad 500078, Telangana, India. arijit.mukherjee@hyderabad.bits-pilani.ac.in.
Benzilic acid acts as a crystal engineering template for [2+2] photodimerization, tuning photoreactivity and inducing a crystal-to-liquid transformation. This study explains the phenomenon using slip plane and energy framework analysis.
Area of Science:
- Crystal Engineering
- Photochemistry
- Supramolecular Chemistry
Background:
- Benzilic acid is a well-known molecule with potential applications in crystal engineering.
- Tuning photoreactivity in organic molecules is crucial for developing new materials and processes.
- Understanding non-covalent interactions is key to controlling molecular assembly and reactivity.
Purpose of the Study:
- To utilize benzilic acid as a template for [2+2] photodimerization using advanced crystal engineering principles.
- To investigate the role of orthogonality and non-covalent interactions in tuning the photoreactivity of styryl pyridine derivatives.
- To analyze the photo-induced crystal-to-liquid transformation observed during the photodimerization process.
Main Methods:
- Employing third-generation crystal engineering principles with benzilic acid as a template.
- Synthesizing and characterizing styryl pyridine derivatives.
- Performing [2+2] photodimerization experiments under controlled conditions.
- Analyzing the photoreactivity and crystal-to-liquid transformation using slip plane and energy framework analysis.
Main Results:
- Benzilic acid effectively templated the [2+2] photodimerization of styryl pyridine derivatives.
- The template demonstrated optimized use of orthogonality and non-covalent interactions to tune photoreactivity.
- A photo-induced crystal-to-liquid transformation was observed during the photodimerization.
- Slip plane and energy framework analysis provided explanations for the observed transformation.
Conclusions:
- Benzilic acid serves as an effective template for controlling photoreactivity in crystal engineering.
- The study highlights the significance of non-covalent interactions and crystal packing in directing photochemical reactions.
- The observed crystal-to-liquid transformation offers insights into the dynamic behavior of molecules in the solid state during photoreactions.
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