Metalloporphyrin 2D-sheets for efficient photo- and electro- catalytic splitting of water

Patent metadata

Field	Value
Publication number	US-11098156-B2
Application number	US-201716465918-A
Country	US
Kind code	B2
Filing date	Nov 30, 2017
Priority date	Dec 2, 2016
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

The present invention disclosed a novel squaraine linked metalloporphyrin based 2D sheet polymer catalyst of formula (I), process for preparation thereof and use of said catalyst for efficient photo- and electro-catalytic splitting of water.

First claim

We claim:

1. A novel squaraine linked metalloporphyrin based 2D-sheet polymer compound with basic unit of formula (I);

wherein;
M is selected from the group consisting of cobalt, nickel, zinc, copper, iron, manganese, molybdenum or a mixture thereof.

2. The compound as claimed in claim 1 , wherein said compound of formula (I) is monometallic 2D-sheet polymer.

3. The compound as claimed in claim 1 , wherein said compound of formula (I) is bimetallic 2D-sheet polymer.

4. The compound as claimed in claim 2 , wherein said compound is selected from the group consisting of:
a) CoP-SQ (2D1),

and
b) ZnP-SQ (2D3)

5. The compound as claimed in claim 1 , wherein said compound of formula (I) is used for generation of oxygen and hydrogen by splitting water photo catalytically and electro catalytically.

6. A one step process for the synthesis of novel squaraine linked metalloporphyrin based 2D-sheet polymer compound with basic unit of formula (I) as claimed in claim 1 , wherein said process comprises heating a reaction mixture of metal porphyrin and an acid compound in suitable solvent at a temperature in the range of 120 to 125° C. for a period of 2.5 to 3 days;
wherein said acid compound is squaric acid.

7. The process as claimed in claim 6 , wherein said metal porphyrin is selected from the group consisting of zinc porphyrin, cobalt porphyrin, nickel porphyrin, iron porphyrin, manganese porphyrin, molybdenum porphyrin or mixture thereof.

8. The process as claimed in claim 6 , wherein said metal porphyrin is selected from the group consisting of

9. The process as claimed in claim 6 , wherein said solvent is selected from the group consisting of n-butanol, toluene or mixture thereof.

10. The compound as claimed in claim 3 , wherein said compound is NIP CoP-SQ (2D2):

Assignees

• Council Scient Ind Res

Inventors

• Sukumaran Santhosh Babu
• Karayamkodath Chandran Ranjeesh

Classifications

• C08G2261/322

  non-condensed · CPC title

• Y02E60/36

  Hydrogen production from non-carbon containing sources, e.g. by water electrolysis · CPC title

• C07D487/22 Primary

  in which the condensed system contains four or more hetero rings · CPC title

• C08G2261/376

  of Fe, Co, Ni · CPC title

• C25B1/04

  by electrolysis of water · CPC title