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How Do Molecular Motions Affect Structures and Properties at Molecule and Aggregate Levels?

01 June 2021, Version 1
Working Paper
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

Experimental and theoretical analysis demonstrated that the active intramolecular motions in the excited state of all molecules at single molecule level imparted them with more twisted structural conformations and weak emission. However, owing to the restriction of intramolecular motions in the nano/macro aggregate state, all the molecules assumed less twisted conformations with bright emission. Synergic strong and weak intermolecular interactions allowed their crystals to undergo reversible deformation, which effectively solved the problem of the brittles of organic crystals, meanwhile imparted them with excellent elastic performance.

Keywords

aggregation induced emission
molecular motion
organic eleastic crystal
non-covalent interactions

Supplementary materials

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Version History

Jun 01, 2021 Version 1

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The content is available under CC BY NC ND 4.0 [opens in a new tab]

DOI

10.26434/chemrxiv.14703822.v1
D O I: 10.26434/chemrxiv.14703822.v1 [opens in a new tab]

Funding

This work was partially supported by the National Natural Sci-ence Foundation of China Grant (51773076, 21871060, 81271476 and 31870991), the Innovation and Technology Commission (ITC-CNERC14SC01), the Research Grants Council of Hong Kong (16305518, 16307020, C6014-20W, C6009-17G, and N-HKUST609/19), and the Material Science Foundation of Guangdong Province (2019B121205012 and 2019B030301003). H. Z thanks to the support from the Funda-mental Research Funds for the Central Universities and the Open Fund of Guang-dong Provincial Key Laboratory of Lumi-nescence from Molec-ular Aggregates, and South China Univer-sity of Technology (2019B030301003).

Author’s competing interest statement

There is no conflict of interest.

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