Spectral line

Phosphor

Crystal (programming language)

Photochemistry

Materials science

Phosphorescence

Triphenylamine

Mechanoluminescence

Economics

Molecule

Computer science

Physical chemistry

Physics

Organic chemistry

Solid-state

Optics

Astronomy

Fluorescence

Financial economics

Crystallography

Emission spectrum

Chemistry

Programming language

Derivative (finance)

Optoelectronics

Angewandte Chemie International Edition

Mechanoluminescence (ML) and room-temperature photophosphorescence (RTP) were achieved in polymorphisms of a triphenylamine derivative with ortho-substitution. This molecular packing-dependent emission afforded crucial information to deeply understand the intrinsic mechanism of different emission forms and the possible packing-function relationship. With the incorporation of solid-state 13 C NMR spectra of single crystals, as well as the analysis of crystal structures, the preferred packing modes for ML and/or RTP were investigated in detail, which can guide the reasonable design of organic molecules with special light-emission properties.

Mechanoluminescence or Room‐Temperature Phosphorescence: Molecular Packing‐Dependent Emission Response