Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 27th March 2019 from 11:00 AM to 1:00 PM (GMT).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 1, 2019
Previous Article Next Article

Surface related intrinsic luminescence from carbon nanodots: solvent dependent piezochromism

Author affiliations

Abstract

There has been a long standing debate on the luminescence origination from carbon nanodots (CDs). Herein, we report the solvent dependent piezochromism of CDs by diamond anvil cells experiment. Red- and blue-shift piezochromism were observed in CDs with N,N-dimethylformamide and water as pressure transmitting medium (PTM) with increasing pressure from atmospheric pressure to 25 GPa, which were related to increased π–π stacking and protic-solvent-induced surface chemical structural changes, respectively. Based on theoretical modeling and structural analysis of hydrothermally treated CDs (h-CDs), the reversible and irreversible piezochromism from green emission to blue emission with water as PTM was attributed to pressure induced enhanced intermolecular hydrogen bonding and addition reaction between water molecules and surface electron withdrawing groups on the CDs, respectively. The decreased electron withdrawing ability of the surface chemical structures of CDs further affects their intrinsic luminescence. This work provides a new understanding of the piezochromic luminescence origination from CDs, which is related to the surface related intrinsic luminescence.

Graphical abstract: Surface related intrinsic luminescence from carbon nanodots: solvent dependent piezochromism

Back to tab navigation

Supplementary files

Publication details

The article was received on 22 Aug 2018, accepted on 17 Sep 2018 and first published on 20 Sep 2018


Article type: Communication
DOI: 10.1039/C8NH00258D
Citation: Nanoscale Horiz., 2019,4, 175-181

  •   Request permissions

    Surface related intrinsic luminescence from carbon nanodots: solvent dependent piezochromism

    P. Jing, D. Han, D. Li, D. Zhou, D. Shen, G. Xiao, B. Zou and S. Qu, Nanoscale Horiz., 2019, 4, 175
    DOI: 10.1039/C8NH00258D

Search articles by author

Spotlight

Advertisements