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Issue 38, 2014
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C–H⋯H–C and C–H⋯π contacts aid transformation of dimeric to monomeric anthracene in the solid state

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Abstract

We report the C–H⋯H–C and C–H⋯π interaction assisted formation of thermodynamically stable blue emissive AP-I from the kinetically stable green emissive AP-II crystal polymorph of 1-(anthracen-9-yl)pyrene (AP). The rotational degree of freedom at the bond between the two constituent chromophores facilitates the formation of conformational polymorphs AP-I and AP-II that can be quantitatively crystallized from ethyl acetate and hexane, respectively.

Graphical abstract: C–H⋯H–C and C–H⋯π contacts aid transformation of dimeric to monomeric anthracene in the solid state

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Article information


Submitted
24 Jun 2014
Accepted
24 Jul 2014
First published
25 Jul 2014

CrystEngComm, 2014,16, 8946-8949
Article type
Communication
Author version available

C–H⋯H–C and C–H⋯π contacts aid transformation of dimeric to monomeric anthracene in the solid state

K. Nagarajan, S. K. Rajagopal and M. Hariharan, CrystEngComm, 2014, 16, 8946
DOI: 10.1039/C4CE01278J

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