Mechanical‐Bending‐Induced Fluorescence Enhancement in Plastically Flexible Crystals of a GFP Chromophore Analogue

Single crystals of optoelectronic materials that respond to external stimuli, such as mechanical, light, or heat, are immensely attractive for next generation smart materials. Here we report single crystals of a green fluorescent protein (GFP) chromophore analogue with irreversible mechanical bendin...

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Bibliographic Details
Published in:Angewandte Chemie 2020-11, Vol.132 (45), p.20050-20055
Main Authors: Bhattacharya, Biswajit, Roy, Debjit, Dey, Somnath, Puthuvakkal, Anisha, Bhunia, Surojit, Mondal, Saikat, Chowdhury, Rituparno, Bhattacharya, Manjima, Mandal, Mrinal, Manoj, Kochunnoonny, Mandal, Prasun K., Reddy, C. Malla
Format: Article
Language:English
Subjects:
Analogs
Bending
Chemistry
Chromophores
Crystals
External stimuli
flexible crystals
Fluorescence
fluorescence properties
Green fluorescent protein
green fluorescent protein chromophore
mechanical properties
Mechanical stimuli
Optoelectronics
Pressure
Single crystals
Smart materials
Stimuli
π-stacking interactions
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Summary:Single crystals of optoelectronic materials that respond to external stimuli, such as mechanical, light, or heat, are immensely attractive for next generation smart materials. Here we report single crystals of a green fluorescent protein (GFP) chromophore analogue with irreversible mechanical bending and associated unusual enhancement of the fluorescence, which is attributed to the strained molecular packing in the perturbed region. Soft crystalline materials with such fluorescence intensity modulations occurring in response to mechanical stimuli under ambient pressure conditions will have potential implications for the design of technologically relevant tunable fluorescent materials. Crystals of a green fluorescent protein chromophore analogue show enhanced fluorescence emission in a plastically deformed mechanically bent state owing to strained molecular packing.
ISSN:0044-8249
1521-3757
DOI:10.1002/ange.202007760