Matthew V Dalton

US Patent:

8153812, Apr 10, 2012

Filed:

Feb 23, 2011

Appl. No.:

13/032735

Inventors:

Ramamurthi Kannan - Cincinnati OH, US
Matthew J. Dalton - Bellbrook OH, US

Assignee:

The United States of America as represented by the Secretary of the Air Force - Washington DC

International Classification:

C07D 277/66

US Classification:

548160

Abstract:

Provided are new 2PA chromophores of the formula:.

US Patent:

8318888, Nov 27, 2012

Filed:

Sep 20, 2011

Appl. No.:

13/237078

Inventors:

Matthew Dalton - Bellbrook OH, US
Ramamurthi Kannan - Cincinnati OH, US

Assignee:

The United States of America as represented by the Secretary of the Air Force - Washington DC

International Classification:

H05B 33/14

US Classification:

528 73, 548152

Abstract:

Two-photon absorbing (2PA), cross-linked polyurethanes were prepared from bis(isocyanato) monomers, tris(isocyanato) monomers or a mixture of bis(isocyanato) and tris(isocyanato) monomers, in conjunction with a novel polyol molecules with donor-acceptor octupolar geometry, whose generic structure is comprised of an electron-accepting 1,3,5-triazine hub with three spokes constituted by electron-donating triarylalkylamine end-groups, which are polyfunctionalized with thermally reactive alcohol functions. The resulting neat glassy or rubbery solids are applicable in a wide range of linear & nonlinear optical applications.

US Patent:

8471035, Jun 25, 2013

Filed:

May 18, 2012

Appl. No.:

13/475159

Inventors:

Ramamurthi Kannan - Cincinnati OH, US
Matthew Dalton - Bellbrook OH, US

Assignee:

The United States of America as represented by the Secretary of the Air Force - Washington DC

International Classification:

C07D 513/04

US Classification:

548151

Abstract:

Two-photon absorbing arylamine-endcapped and dialkylfluorene-bridged benzobisthiazole-based compounds are provided. These two-photon absorbing benzobisthiazole-based compounds show high solubility in nonpolar hydrocarbon solvents (oleophilicity) and high two-photon properties, especially in the nanosecond domain of pulse-laser excitation.

US Patent:

8580958, Nov 12, 2013

Filed:

Sep 22, 2011

Appl. No.:

13/239606

Inventors:

Ramamurthi Kannan - Cincinnati OH, US
Matthew Dalton - Bellbrook OH, US

Assignee:

The United States of America as represented by the Secretary of the Air Force - Washington DC

International Classification:

C07D 251/24
H05B 33/14

US Classification:

544180, 514241, 257 40

Abstract:

Provided are novel 2PA-active monomers of the formula:.

US Patent:

20140039185, Feb 6, 2014

Filed:

Oct 7, 2013

Appl. No.:

14/047460

Inventors:

Ramamurthi Kannan - Cincinnati OH, US
Matthew Dalton - Bellbrook OH, US

Assignee:

Government of the United States as Represented by the Secretary of the Air Force - Wright-Patterson AFB OH

International Classification:

C07D 251/24

US Classification:

544216

Abstract:

A method of synthesizing a two-photon active tris(diarylamino-9,9-di(R)fluorenyl)-1,3,5-triazine compound having the structure:where Y is hydrogen, a thermally self-polymerizable acrylic, or a methacrylic group; R is an alkyl group of the formula —CH, wherein the subscript m ranges from 1 to 6, or an alkylether group of the formula —(CHCHO)Me, wherein the subscript p ranges from 1 to 5; R′ is an alkyl group; and the R′—(OY)groups are attached to the phenyl rings of the triarylamine moiety either in a para position or a meta position and the subscript x ranges from 1 to 3. The compound may be synthesized by (a) synthesizing a diarylamine intermediate, (b) synthesizing a brominated 1,3,5-triazine intermediate as a three-arm core structure, and (c) forming the two-photon active tris(diarylamino-9,9-di(R)fluorenyl)-1,3,5-triazine compound by covalently joining the diarylamine and each arm of the three-arm core structure and removing the acetone protecting groups. The diarylamine intermediate may be synthesized by protecting tris-1,1,1-(hydroxymethyl)ethane, via a ketal formation with acetone, as an acetonide derivative; furnishing bromophenoxy-methyltrimethyl-1,3-dioxane from the acetonide derivative; and arylating aniline with the bromophenoxy-methyltrimethyl-1,3-dioxane.