1219481-71-6Relevant academic research and scientific papers
Mechanochromic Luminescence from Crystals Consisting of Intermolecular Hydrogen-Bonded Sheets
Nakamura, Takayoshi,Sagara, Yoshimitsu,Takahashi, Kiyonori,Tamaoki, Nobuyuki
, (2019)
Introduction of functional groups that can form intermolecular hydrogen bonds into highly-emissive luminophores is a promising way to induce mechanochromic luminescence. Herein, we report that a 9,10-bis(phenylethynyl)anthracene derivative featuring two amide groups forms green-emissive crystals based on two-dimensional hydrogen-bonded molecular sheets. Mechanical grinding changed the emission from green to yellow, owing to a transition from a crystalline to an amorphous phase. Infrared spectroscopy revealed that mechanical stimuli disrupted the linear hydrogen-bonding formation. A thermal treatment recovered the original green photoluminescence.
Synthesis of N = 8 Armchair Graphene Nanoribbons from Four Distinct Polydiacetylenes
Jordan, Robert S.,Li, Yolanda L.,Lin, Cheng-Wei,McCurdy, Ryan D.,Lin, Janice B.,Brosmer, Jonathan L.,Marsh, Kristofer L.,Khan, Saeed I.,Houk,Kaner, Richard B.,Rubin, Yves
supporting information, p. 15878 - 15890 (2017/11/14)
We demonstrate a highly efficient thermal conversion of four differently substituted polydiacetylenes (PDAs 1 and 2a-c) into virtually indistinguishable N = 8 armchair graphene nanoribbons ([8]AGNR). PDAs 1 and 2a-c are themselves easily access
