IP Library › Granted Patent US 12,570,808
Granted Patent B2
US 12,570,808 · App. 18/543,275 · Granted Mar 10, 2026

Pressure-induced crystallization and topochemical cross-linking of conjugated polymers

Inventors: Hongyou Fan (Albuquerque, NM); Yang Qin (Storrs, CT)
Assignees: National Technology & Engineering Solutions of Sandia, LLC; UNM Rainforest Innovations
C08J3/24C30B1/12C30B29/58C08J2349/00
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Quick Facts
Patent No.
US 12,570,808
App. No.
18/543,275
Granted
Mar 10, 2026
Kind
B2
Abstract

Polytriacetylene, a unique conjugated polymer with all-carbon main-chains consisting of alternating double bonds and diacetylene units, can self-assemble into ordered structures under moderate pressures, driven by side-chain crystallization. At higher pressure, the polymer undergoes topochemical cross-linking reactions, resulting in insoluble materials with graphyne-like structural and property characteristics.

Claims (11)

1 . A method for the pressure-induced crystallization of topochemical cross-linking of conjugated polymers, comprising:

self-assembling a polytriacetlyene to provide an ordered 3D structure of polytriacetylene aggregate, and

applying a moderate pressure to the polytriacetylene aggregate sufficient to provide a crystallized polytriacetylene aggregate.

2 . The method of claim 1 , wherein the moderate pressure is greater than 0.2 GPa and less than 4 GPa.

3 . The method of claim 1 , further comprising applying a higher pressure to the crystallized polytriacetylene aggregate sufficient to provide a topochemically crosslinked polytriacetylene having a graphyne-like structure.

4 . The method of claim 3 , wherein the higher pressure is greater than 4 GPa.

5 . The method of claim 1 , wherein the polytriacetlyene comprises alkyl side chains.

6 . The method of claim 5 , wherein the alkyl side chains have a chain length ranging from 1 to 30 carbons.

7 . The method of claim 5 , wherein the alkyl side chains are trans.

8 . The method of claim 5 , wherein the alkyl side chains are linear.

9 . The method of claim 1 , wherein the polytriacetylene comprises poly(undecyl triacetylene).

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 20, 2025
From: QIN, YANG
To: THE REGENTS OF THE UNIVERSITY OF NEW MEXICO
Reel/Frame 072071/0876 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 13, 2025
From: THE REGENTS OF THE UNIVERSITY OF NEW MEXICO
To: UNM RAINFOREST INNOVATIONS
Reel/Frame 070507/0308 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 12, 2024
From: FAN, HONGYOU
To: NATIONAL TECHNOLOGY & ENGINEERING SOLUTIONS OF SANDIA, LLC
Reel/Frame 066437/0832 →
CONFIRMATORY LICENSE Recorded Jan 11, 2024
From: NATIONAL TECHNOLOGY & ENGINEERING SOLUTIONS OF SANDIA, LLC
To: U.S. DEPARTMENT OF ENERGY
Reel/Frame 066104/0529 →
Continuity (1)
Related Publication 20250197571A1 · Jun 19, 2025
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