Issue 8, 2014
From the journal:

New Journal of Chemistry

Potassium ion-mediated synthesis of highly water-soluble dendritically functionalized melanins†

Siu-Fung Lee,a   Qun Wang,b   Donald Ka-Long Chan,a   Po-Ling Cheung,a   Ka-Wai Wong,*b   Jimmy C. Yu,*a   Beng S. Ongcd  and  Ken Cham-Fai Leung*ce  

* Corresponding authors

a Department of Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR, P. R. China
E-mail: jimyu@cuhk.edu.hk

b Chengdu Green Energy and Green Manufacturing Technology R&D Center, Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu, P. R. China
E-mail: kwwong.hk@gmail.com

c Department of Chemistry and Institute of Creativity, The Hong Kong Baptist University, Kowloon, Hong Kong SAR, P. R. China
E-mail: cfleung@hkbu.edu.hk

d Research Centre of Excellence for Organic Electronics, The Hong Kong Baptist University, Kowloon, Hong Kong SAR, P. R. China

e Institute of Molecular Functional Materials, University Grants Committee, Hong Kong SAR, P. R. China

Abstract

A series of melanin derivatives has been prepared by functionalization with dendritic azobenzene molecules under basic conditions with (K2CO3) and without (Et3N) a potassium ion. The dendritic melanins treated with K2CO3 show excellent solubility in water and tetrahydrofuran. This may be due to the multivalent chelating properties between the heteroatoms of melanin and potassium ions. These highly soluble dendritic melanins were coupled with TiO2 nanotube arrays easily for enhanced photocurrent generation.

Graphical abstract: Potassium ion-mediated synthesis of highly water-soluble dendritically functionalized melanins

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Article information

DOI
https://doi.org/10.1039/C4NJ00318G
Article type
Letter
Submitted
03 Mar 2014
Accepted
21 May 2014
First published
22 May 2014

New J. Chem., 2014,38, 3362-3366

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Potassium ion-mediated synthesis of highly water-soluble dendritically functionalized melanins

S. Lee, Q. Wang, D. K. Chan, P. Cheung, K. Wong, J. C. Yu, B. S. Ong and K. C. Leung, New J. Chem., 2014, 38, 3362 DOI: 10.1039/C4NJ00318G

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