Journal
ACS APPLIED ELECTRONIC MATERIALS
Volume 3, Issue 1, Pages 309-315Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsaelm.0c00857
Keywords
photoswitching; reversible trans-cis isomerization; AIE-active molecules; photoswitchable conductance; carbon nanotube
Funding
- DST-SERB [EMR/2017/003720]
- INSPIRE doctoral fellowship by DST-India
- UGC-FRP
- Council of Scientific & Industrial Research (CSIR), India [02(0357)/19/EMR-II]
- Umm Al-Qura University
- UGC
- CSIR
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The study demonstrates the successful functionalization of multiwalled carbon nanotubes using a photoresponsive azobenzene-based tetraphenylethylene system, leading to a reversible photoresponsive conductivity switch.
The use of light as an external stimulus to control organic supramolecular structures can play an important role in molecular devices. Photoswitchable azobenzenes are well suited for such applications due to their photoresponsive properties and a thermally induced reversal from the cis to the thermodynamically stable trans state. In this work, we have demonstrated for the first time that an azobenzene-based tetraphenylethylene (TPE) system capable of aggregation-induced emission (AIE) behavior can act as a molecular glue that can noncovalently functionalize multiwalled carbon nanotubes (MWCNTs). The resulting photoresponsive, noncovalent hybrid material shows reversible conductivity switching upon irradiation with light by making use of the reversible cis-trans isomerization.
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