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Influence of Odd and Even Alkyl Chains on Supramolecular Nanoarchitecture via Self-Assembly of Tetraphenylethylene-Based AIEgens

1
School of Science, RMIT University, GPO BOX 2476, Melbourne, VIC 3001, Australia
2
Polymers and Functional Material Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India
3
Centre for Advanced Materials and Industrial Chemi Stry (CAMIC), RMIT University, GPO Box 2476, Melbourne, VIC 3001, Australia
*
Author to whom correspondence should be addressed.
Appl. Sci. 2017, 7(11), 1119; https://doi.org/10.3390/app7111119
Received: 22 September 2017 / Revised: 19 October 2017 / Accepted: 25 October 2017 / Published: 30 October 2017
(This article belongs to the Section Chemistry)
The Tetraphenylethylene (TPE) based dumbbell shaped molecules TPE-Pi, TPE-Su, TPE-Az, and TPE-Se were synthesised bearing odd-even alkyl chains containing 7, 8, 9 and 10 carbons respectively. These molecules reveal typical Aggregation Induced Emission (AIE) behaviour. The influence of the odd or even alkyl chain length was shown by studying the morphology of self-assembled nanostructures formed in a range of tetrahydrofuran (THF)/water solvent systems. For example, with a water fraction of 80%, TPE derivatives with odd alkyl chains (TPE-Pi and TPE-Az) self-assembled into nanosphere structures, while TPE-Su with 8 alkyl chains formed microbelts and TPE-Se with 10 alkyl chains aggregated into flower-like superstructures. These TPE derivatives also revealed interesting mechanochromic properties upon grinding, fuming and heating, which reveal the importance of molecular stacking in the crystal structure to the luminescent properties of the aggregates .The mechanochromic properties of TPE-Pi, TPE-Su, and TPE-Az were also demonstrated by the process of grounding, fuming, and heating. View Full-Text
Keywords: nanostructures; odd-even effect; self-assembly; tetraphenylethylene; mechanochromic properties nanostructures; odd-even effect; self-assembly; tetraphenylethylene; mechanochromic properties
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MDPI and ACS Style

Salimimarand, M.; La, D.D.; Bhosale, S.V.; Jones, L.A.; Bhosale, S.V. Influence of Odd and Even Alkyl Chains on Supramolecular Nanoarchitecture via Self-Assembly of Tetraphenylethylene-Based AIEgens. Appl. Sci. 2017, 7, 1119.

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