Issue 38, 2014

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

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

Supplementary files

Article information

Article type
Communication
Submitted
24 Jun 2014
Accepted
24 Jul 2014
First published
25 Jul 2014

CrystEngComm, 2014,16, 8946-8949

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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