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Selective sequential infiltration synthesis of ZnO in the liquid crystalline phase of silicon-containing rod-coil block copolymers

Journal Article · · Nanoscale
DOI:https://doi.org/10.1039/d1nr06065a· OSTI ID:1854495
 [1];  [2];  [3];  [4];  [5];  [6];  [4]
  1. Sichuan Univ., Chengdu (China); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. Stony Brook Univ., NY (United States)
  3. Sichuan Univ., Chengdu (China)
  4. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  5. Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
  6. Stony Brook Univ., NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)

The combination of block copolymer (BCP) thin film self-assembly and selective infiltration synthesis of inorganic materials into one BCP block provides access to various organic–inorganic hybrids. Here, we apply sequential infiltration synthesis, a vapor-phase hybridization technique, to selectively introduce ZnO into the organic microdomains of silicon-containing rod-coil diblock copolymers and a triblock terpolymer, polydimethylsiloxane (PDMS)-b-poly{2,5-bis[(4-methoxyphenyl)-oxycarbonyl]styrene} (PDMS-b-PMPCS) and PDMS-b-polystyrene-b-PMPCS (PDMS-b-PS-b-PMPCS), in which the PMPCS rod block is a liquid crystalline polymer. The in-plane cylindrical PDMS-b-PMPCS and core–shell cylindrical and hexagonally perforated lamellar PDMS-b-PS-b-PMPCS films were infiltrated with ZnO with high selectivity to the PMPCS. The etching contrast between PDMS, PS and the ZnO-infused PMPCS enables the fabrication of ZnO/SiOx binary composites by plasma etching and reveals the core–shell morphology of the triblock terpolymer.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF); Applied Basic Research Program of Science and Technology Commission Foundation of Sichuan Province
Grant/Contract Number:
SC0012704
OSTI ID:
1854495
Report Number(s):
BNL-222826-2022-JAAM
Journal Information:
Nanoscale, Journal Name: Nanoscale Journal Issue: 5 Vol. 14; ISSN 2040-3364
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

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