1
|
Optical Second Harmonic Generation Study of a Rubbed Polyimide Film Containing Steroidal Structure Side Chains. E-JOURNAL OF SURFACE SCIENCE AND NANOTECHNOLOGY 2017. [DOI: 10.1380/ejssnt.2017.7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
2
|
Lu Y, Wu Y, Xiao G, Dong Y, Zhao H, Hu Z. Synthesis and characterization of poly(pyridine–imide)s with tert-butyl substituents. HIGH PERFORM POLYM 2014. [DOI: 10.1177/0954008314523054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The aromatic diamine monomer containing a pyridine heterocyclic group and a tert-butyl substituent, 4-[(4′- tert-butyl)phenyl]-2,6-bis(4-aminophenyl)pyridine (BPAP), was successfully synthesized by a modified Chichibabin reaction of 4-nitro-acetophenone and 4- tert-butyl benzaldehyde, followed by a reduction of the resulting dinitro compound 4-[(4′- tert-butyl)phenyl]-2,6-bis(4-nitrophenyl)pyridine with palladium/carbon and hydrazine monohydrate, successively. A series of poly(pyridine–imide)s were prepared from the diamine BPAP with the alicyclic anhydride 1,2,3,4-cyclobutanetetracarboxylic dianhydride, aromatic anhydride pyromelitic dianhydride, 3,3′,4,4′-biphenyl tetracarboxylic dianhydride, and 4,4′-oxydiphthalic anhydride in N, N-dimethylformamide (DMF) via the conventional two-step method and further chemical imidization to obtain poly(pyridine-imide) powders. Due to the introduction of tert-butyl group, the polyimides (PIs) derived from BPAP were amorphous and displayed good solubility in amine-type polar solvents, such as DMF, dimethyl sulfoxide, N, N-dimethylacetamide, and N-methyl-2-pyrrolidone. Because of the presence of rigid triphenylpyridine units and bulky substituents, the final PIs held a good thermal stability with 10% weight loss temperatures above 504°C and left more than 55% residue even at 700°C under nitrogen atmosphere. The effect of tert-butyl substituents on the properties of the PIs was studied by comparing with 4-phenyl-2,6-bis(4-nitrophenyl)pyridine. These PIs exhibited some fluorescent properties because of the triphenylpyridine units, and the chemical structure of dianhydrides took an effect on the fluorescent property of these PIs.
Collapse
Affiliation(s)
- Yunhua Lu
- State Key Laboratory of Fine Chemicals, Carbon Research Laboratory, School of Chemical Engineering, Dalian University of Technology, Dalian, China
- School of Chemical Engineering, University of Science and Technology Liaoning, Gaoxin District, Anshan, Liaoning, China
| | - Yuane Wu
- School of Chemical Engineering, University of Science and Technology Liaoning, Gaoxin District, Anshan, Liaoning, China
| | - Guoyong Xiao
- School of Chemical Engineering, University of Science and Technology Liaoning, Gaoxin District, Anshan, Liaoning, China
| | - Yan Dong
- School of Chemical Engineering, University of Science and Technology Liaoning, Gaoxin District, Anshan, Liaoning, China
| | - Hongbin Zhao
- School of Chemical Engineering, University of Science and Technology Liaoning, Gaoxin District, Anshan, Liaoning, China
| | - Zhizhi Hu
- School of Chemical Engineering, University of Science and Technology Liaoning, Gaoxin District, Anshan, Liaoning, China
| |
Collapse
|
3
|
Synthesis of new diacid monomers and poly(amide-imide)s: study of structure–property relationship and applications. JOURNAL OF POLYMER RESEARCH 2012. [DOI: 10.1007/s10965-012-9845-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
4
|
Ramírez MA, Cuadro AM, Alvarez-Builla J, Castaño O, Andrés JL, Mendicuti F, Clays K, Asselberghs I, Vaquero JJ. Donor-(π-bridge)-azinium as D-π-A+ one-dimensional and D-π-A(+)-π-D multidimensional V-shaped chromophores. Org Biomol Chem 2012; 10:1659-69. [PMID: 22241523 DOI: 10.1039/c2ob06427h] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Heteroaromatic cations reacted with N-heteroarylacetylenes under Sonogashira conditions to allow easy access to potential single donor D-π-A(+) and V-shaped D-π-A(+)-π-D chromophores, where the acceptor moiety A is the π-deficient pyridinium cation and the donor moiety is represented by different π-excessive N-heterocycles. The β hyperpolarizabilities were measured using hyper-Rayleigh scattering experiments and the experimental data are supported by a theoretical analysis that combines a variety of computational procedures, including Density Functional Theory (DFT) and correlated Hartree-Fock-based methods (RCIS(D)).
Collapse
Affiliation(s)
- Marco Antonio Ramírez
- Departamento de Química Orgánica, Universidad de Alcalá, 28871 Alcalá de Henares, Madrid, Spain
| | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Hahm SG, Jin KS, Park S, Ree M, Kim HS, Kwon SK, Kim YH. The alignment of liquid crystals on the film surfaces of soluble aromatic polyimides bearingt-butylphenyl and trimethylsilylphenyl side groups. Macromol Res 2009. [DOI: 10.1007/bf03218645] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
9
|
Mathews AS, Jung Y, Lee T, Park SS, Kim I, Ha CS, Selvaraj M, Han M. Microstructure and properties of fully aliphatic polyimide/mesoporous silica hybrid composites. Macromol Res 2009. [DOI: 10.1007/bf03218922] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
10
|
Lee T, Park SS, Jung Y, Han S, Han D, Kim I, Ha CS. Preparation and characterization of polyimide/mesoporous silica hybrid nanocomposites based on water-soluble poly(amic acid) ammonium salt. Eur Polym J 2009. [DOI: 10.1016/j.eurpolymj.2008.09.022] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
11
|
Mathews AS, Kim D, Kim Y, Kim I, Ha CS. Synthesis and characterization of soluble polyimides functionalized with carbazole moieties. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pola.23109] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
12
|
Lee GY, Jang HN, Jung WT, Lee JY. Preparation of novel T-type nonlinear optical polyimide with high thermal stability of second harmonic generation. Macromol Res 2008. [DOI: 10.1007/bf03218589] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|