SCHEDULED MAINTENANCE

Maintenance work is planned for Wednesday 1st May 2024 from 9:00am to 11:00am (BST).

During this time, the performance of our website may be affected - searches may run slowly and some pages may be temporarily unavailable. If this happens, please try refreshing your web browser or try waiting two to three minutes before trying again.

We apologise for any inconvenience this might cause and thank you for your patience.

RSC Author Reprints

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This electronic reprint file (in PDF format) is provided to allow you to print and distribute hardcopies of your article on demand. You may also send the electronic file to individuals, as you would a printed reprint. However, the electronic file may not be distributed via an email listserver and it may not be placed on any website.

Note you can only get access within 60 days of publication.