Imperial College London

Prof Milo Shaffer

Faculty of Natural SciencesDepartment of Chemistry

Professor of Materials Chemistry
 
 
 
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Contact

 

+44 (0)20 7594 5825m.shaffer Website

 
 
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Assistant

 

Mr John Murrell +44 (0)20 7594 2845

 
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Location

 

M221Royal College of ScienceSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Miller:2017:10.1021/acs.nanolett.7b01353,
author = {Miller, TS and Suter, TM and Telford, AM and Picco, L and Payton, OD and Russell-Pavier, F and Cullen, PL and Sella, A and Shaffer, MSP and Nelson, J and Tileli, V and McMillan, PF and Howard, CA},
doi = {10.1021/acs.nanolett.7b01353},
journal = {Nano Letters},
pages = {5891--5896},
title = {Single crystal, luminescent carbon nitride nanosheets formed by spontaneous dissolution},
url = {http://dx.doi.org/10.1021/acs.nanolett.7b01353},
volume = {17},
year = {2017}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - A primary method for the production of 2D nanosheets is liquid-phase delamination from their 3D layered bulk analogues. Most strategies currently achieve this objective by significant mechanical energy input or chemical modification but these processes are detrimental to the structure and properties of the resulting 2D nanomaterials. Bulk poly(triazine imide) (PTI)-based carbon nitrides are layered materials with a high degree of crystalline order. Here, we demonstrate that these semiconductors are spontaneously soluble in select polar aprotic solvents, that is, without any chemical or physical intervention. In contrast to more aggressive exfoliation strategies, this thermodynamically driven dissolution process perfectly maintains the crystallographic form of the starting material, yielding solutions of defect-free, hexagonal 2D nanosheets with a well-defined size distribution. This pristine nanosheet structure results in narrow, excitation-wavelength-independent photoluminescence emission spectra. Furthermore, by controlling the aggregation state of the nanosheets, we demonstrate that the emission wavelengths can be tuned from narrow UV to broad-band white. This has potential applicability to a range of optoelectronic devices.
AU - Miller,TS
AU - Suter,TM
AU - Telford,AM
AU - Picco,L
AU - Payton,OD
AU - Russell-Pavier,F
AU - Cullen,PL
AU - Sella,A
AU - Shaffer,MSP
AU - Nelson,J
AU - Tileli,V
AU - McMillan,PF
AU - Howard,CA
DO - 10.1021/acs.nanolett.7b01353
EP - 5896
PY - 2017///
SN - 1530-6984
SP - 5891
TI - Single crystal, luminescent carbon nitride nanosheets formed by spontaneous dissolution
T2 - Nano Letters
UR - http://dx.doi.org/10.1021/acs.nanolett.7b01353
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000413057500003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - http://hdl.handle.net/10044/1/66849
VL - 17
ER -