Surface related intrinsic luminescence from carbon nanodots: solvent dependent piezochromism

doi:10.1039/c8nh00258d

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	Surface related intrinsic luminescence from carbon nanodots: solvent dependent piezochromism
	P.T.Jing; D.Han; D.Li; D.Zhou; D.Z.Shen; G.J.Xiao; B.Zou
刊名	Nanoscale Horizons
	2019
卷号	4 期号:1 页码:175-181
关键词	graphene quantum dots,emission,fluorescence,pressure,electroluminescence,photoluminescence,mechanism
ISSN号	2055-6756
DOI	10.1039/c8nh00258d
英文摘要	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 - 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.
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/63296]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	P.T.Jing,D.Han,D.Li,et al. Surface related intrinsic luminescence from carbon nanodots: solvent dependent piezochromism[J]. Nanoscale Horizons,2019,4(1):175-181.
APA	P.T.Jing.,D.Han.,D.Li.,D.Zhou.,D.Z.Shen.,...&B.Zou.(2019).Surface related intrinsic luminescence from carbon nanodots: solvent dependent piezochromism.Nanoscale Horizons,4(1),175-181.
MLA	P.T.Jing,et al."Surface related intrinsic luminescence from carbon nanodots: solvent dependent piezochromism".Nanoscale Horizons 4.1(2019):175-181.