# US 2010/0166604 A1 · Colorimetric sensor arrays based on nanoporous pigments > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0166604 A1 - Document ID: US20100166604A1 - Status: Published application - Kind: A1 - Application number: 12/552,899 - Filed: 2009-09-02 - Published: 2010-07-01 - Earliest claimed: 2008-09-04 - Assignees: The Board of Trustees of the University of Illinois - Inventors: Sung H. Lim; Christopher J. Musto; Liang Feng; Jonathan W. Kemling; Kenneth S. Suslick - Web page: https://patentgrep.com/patent/US20100166604A1 ## CPC - G01N 31/22: using chemical indicators (G01N31/02 takes precedence) - G01N 21/253: {for batch operation, i.e. multisample apparatus (analytical automats G01N35/00)} - G01N 21/78: producing a change of colour - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) ## Abstract A colorimetric array includes a substrate, a first spot on the substrate, and a second spot on the substrate. The first spot includes a first nanoporous pigment that includes a first nanoporous material and a first immobilized, chemoresponsive colorant. The second spot includes a second nanoporous pigment that includes a second nanoporous material and a second immobilized, chemoresponsive colorant. The first nanoporous pigment is different from the second nanoporous pigment. ## Claims ### Claim 1 A colorimetric array comprising: a substrate; a first spot on the substrate, comprising a first nanoporous pigment, the first nanoporous pigment comprising a first nanoporous material and a first immobilized, chemoresponsive colorant; and a second spot on the substrate, comprising a second nanoporous pigment, the second nanoporous pigment comprising a second nanoporous material and a second immobilized, chemoresponsive colorant; where the first nanoporous pigment is different from the second nanoporous pigment. ### Claim 2 (depends on 1) The colorimetric array of claim 1, where the first immobilized, chemoresponsive colorant comprises a dye insolubilized by the first nanoporous material. ### Claim 3 (depends on 2) The colorimetric array of claim 2, where the dye is selected from the group consisting of a Lewis acid-base dye, a structure sensitive porphyrin, a pH sensitive dye, a solvatochromic dye, a vapochromic dye, a redox sensitive dye, and a metal ion sensitive dye. ### Claim 4 (depends on 2) The colorimetric array of claim 2, where the dye is a Lewis acid-base dye selected from the group consisting of a metal-ion containing dye, a boron-containing dye, a boronic acid containing dye, and a dye comprising an accessible heteroatom having a lone electron pair. ### Claim 5 (depends on 4) The colorimetric array of claim 4, where the dye is a metal-ion containing dye selected from the group consisting of a metalloporphyrin, a salen complex, a chlorin, a bispocket porphyrin, and a phthalocyanine. ### Claim 6 (depends on 2) The colorimetric array of claim 2, where the dye is a structure sensitive porphyrin selected from the group consisting of a tetrakis(2,4,6-trimethoxyphenyl)-porphyrin, a silylether-metalloporphyrin, and a siloxyl-substituted bis-pocket porphyrin. ### Claim 7 (depends on 2) The colorimetric array of claim 2, where the dye is a pH sensitive dye selected from the group consisting of a Brønsted acid dye and a Brønsted base dye. ### Claim 8 (depends on 2) The colorimetric array of claim 2, where the dye is responsive to at least one chemical interaction selected from the group consisting of Lewis acid-base interaction, Brønsted acid-base interaction, ligand binding, π-π complexation, hydrogen bonding, polarization, oxidation/reduction, and metal coordination. ### Claim 9 (depends on 1) The colorimetric array of claim 1, where the first immobilized, chemoresponsive colorant comprises a chemoresponsive pigment. ### Claim 10 (depends on 9) The colorimetric array of claim 9, where the chemoresponsive pigment is a porous pigment. ### Claim 11 (depends on 1) The colorimetric array of claim 1, where the first immobilized, chemoresponsive colorant comprises a chemoresponsive nanoparticle. ### Claim 12 (depends on 11) The colorimetric array of claim 11, where the chemoresponsive nanoparticle is selected from the group consisting of a nanoporous porphyrin solid, a semiconductor nanoparticle, and a metal nanoparticle. ### Claim 13 (depends on 1) The colorimetric array of claim 1, where the first and second nanoporous materials are the same, and the first and second immobilized, chemoresponsive colorants are different. ### Claim 14 (depends on 1) The colorimetric array of claim 1, where the first and second nanoporous materials are different, and the first and second immobilized, chemoresponsive colorants are the same. ### Claim 15 (depends on 1) The colorimetric array of claim 1, where the first and second nanoporous materials are different, and the first and second immobilized, chemoresponsive colorants are different. ### Claim 16 (depends on 1) The colorimetric array of claim 1, further comprising a plurality of additional spots on the substrate, each spot of the plurality independently comprising a chemoresponsive colorant. ### Claim 17 (depends on 16) The colorimetric array of claim 16, where at least one spot of the plurality comprises an additional nanoporous pigment, different from the first and second nanoporous pigments. ### Claim 18 (depends on 16) The colorimetric array of claim 16, where each spot of the plurality independently comprises an additional nanoporous pigment, different from the first and second nanoporous pigments. ### Claim 19 (depends on 18) The colorimetric array of claim 18, where each additional nanoporous pigment of the plurality is different. ### Claim 20 A method of making a colorimetric array, comprising: depositing a first liquid at a first point on a substrate, depositing a second liquid at a second point on a substrate, converting the first liquid into a first spot on the substrate, and converting the second liquid into a second spot on the substrate; where the first spot comprises a first nanoporous pigment comprising a first nanoporous material and a first immobilized, chemoresponsive colorant, and the second spot comprises a second nanoporous pigment comprising a second nanoporous material and a second immobilized, chemoresponsive colorant, and the first nanoporous pigment is different from the second nanoporous pigment. ### Claim at position 21 21-54. (canceled)