The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 02, 2014
Filed:
Jan. 20, 2012
Kevin Ka Leung Cheuk, Hong Kong, CN;
John Haozhong Xin, Hong Kong, CN;
Priscilla Pui Sze Lee, Hong Kong, CN;
Zhi Xue, Hong Kong, CN;
Kevin Ka Leung Cheuk, Hong Kong, CN;
John Haozhong Xin, Hong Kong, CN;
Priscilla Pui Sze Lee, Hong Kong, CN;
Zhi Xue, Hong Kong, CN;
The Hong Kong Polytechnic Univeristy, Hung Hom, Kowloon, Hong Kong, HK;
Abstract
A method of mass production of tetrakis(p-nitrophenyl)porphyrins, by which successful isolation of the barely soluble product from meso-aryl nitration of tetraphenylporphyrin toward a remarkable yield of nearly 90% has been realized by means of a solid phase extraction technique. This is a simpler and more straight forward synthetic method, suitable production at an industrial scale with lower cost, shorter synthetic time and lower solvent consumption. A preferred species of tetrakis(p-nitrophenyl)porphyrin produced by a subject method is: