Imperial College London

Prof Milo Shaffer

Faculty of Natural SciencesDepartment of Chemistry

Professor of Materials Chemistry



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




Mr John Murrell +44 (0)20 7594 2845




M221Royal College of ScienceSouth Kensington Campus






BibTex format

author = {Hart, M and Chen, J and Michaelides, A and Sella, A and Shaffer, MSP and Salzmann, CG},
doi = {10.1002/ange.201805856},
journal = {Angewandte Chemie},
pages = {11823--11827},
title = {One-dimensional arsenic allotropes: polymerization of yellow arsenic inside single-wall carbon nanotubes},
url = {},
volume = {130},
year = {2018}

RIS format (EndNote, RefMan)

AB - The pnictogen nanomaterials, including phosphorene and arsenene, display remarkable electronic and chemical properties. Yet, the structural diversity of these main group elements is still poorly explored. Here we fill singlewall carbon nanotubes with elemental arsenic from the vapor phase. Using electron microscopy, we find chains of highly reactive As4 molecules as well as two new onedimensional allotropes of arsenic: a singlestranded zigzag chain and a doublestranded zigzag ladder. These linear structures are important intermediates between the gasphase clusters of arsenic and the extended sheets of arsenene. Raman spectroscopy indicates weak electronic interaction between the arsenic and the nanotubes which implies that the formation of the new allotropes is driven primarily by the geometry of the confinement. The relative stabilities of the new arsenic structures are estimated computationally. Bandgap calculations predict that the insulating As4 chains become semiconducting, once converted to the zigzag ladder, and form a fully metallic allotrope of arsenic as the zigzag chain.
AU - Hart,M
AU - Chen,J
AU - Michaelides,A
AU - Sella,A
AU - Shaffer,MSP
AU - Salzmann,CG
DO - 10.1002/ange.201805856
EP - 11827
PY - 2018///
SN - 0044-8249
SP - 11823
TI - One-dimensional arsenic allotropes: polymerization of yellow arsenic inside single-wall carbon nanotubes
T2 - Angewandte Chemie
UR -
UR -
UR -
VL - 130
ER -