Multifunctional Gels from Polymeric Spin-Crossover Metallo-Gelators

被引：80
作者：
Grondin, Pauline [1 ,2 ]
Roubeau, Olivier [1 ,2 ,3 ]
Castro, Miguel [3 ]
Saadaoui, Hassan [1 ,2 ]
Colin, Annie [4 ]
Clerac, Rodolphe [1 ,2 ]
机构：
[1] CNRS, Ctr Rech Paul Pascal, Equipe Mat Mol Magnet, UPR 8641, 115 Ave Dr Albert Schweitzer, F-33600 Pessac, France
[2] Univ Bordeaux, UPR 8641, F-33600 Pessac, France
[3] Univ Zaragoza, Fac Ciencias, CSIC, Inst Ciencia Mat Aragon, E-50009 Zaragoza, Spain
[4] Univ Bordeaux 1, CNRS Rhodia, LOF, UMR 5258, F-33608 Pessac, France
来源：
LANGMUIR | 2010年 / 26卷 / 07期
关键词：
MOLECULAR-WEIGHT GELATOR; LANGMUIR-BLODGETT-FILMS; PHASE-TRANSITION; ORGANOGELS; COMPLEXES; COORDINATION; TRINUCLEAR; HYDROGEL; BEHAVIOR; LIGANDS;
D O I：
10.1021/la903653d
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The gelation abilities toward organic solvents of a series of triazole-based coordination polymers of formula [M(C(n)trz)(3)]A(2), (M = Fe(II) or Zn(II); C(n)trz =4-n-alkyl-1,2,4-triazole with n = 13, 16, 18; A = monovalent anions, abbreviated as MC A) have been studied to form thermally responsive multifunctional metallogels, in particular for the iron polymers that present the spin-crossover phenomenon. Indeed thereto-reversible physical gels exhibiting thermally reversible magnetic and optical crossovers are formed in decane and toluene. The FeC(18)ptol/decane and FeC(18)ptol/toluene phase diagrams are described (ptol = p-toluene sulfonate anion), together with the rheological properties of the gels determined as a function of the solvent, the gelator concentration as well as temperature. Microscopic observations of the gel structure are correlated to the composition and rheological properties of the gels. Magnetic and thermal studies show that both the gel-liquid and spin-crossover phenomena can be adjusted through the composition of the gel mixture.
引用
收藏
页码：5184 / 5195
页数：12
相关论文
共 68 条
[1]   π-organogels of self-assembled p-phenylenevinylenes:: Soft materials with distinct size, shape, and functions [J].
Ajayaghosh, Ayyappanpillai ;
Praveen, Vakayil K. .
ACCOUNTS OF CHEMICAL RESEARCH, 2007, 40 (08) :644-656
[2]  
[Anonymous], 2018, Physical Chemistry
[3]   LANGMUIR-BLODGETT-FILMS OF SPIN TRANSITION IRON(II) METALLOORGANIC POLYMERS .1. IRON(II) COMPLEXES OF OCTADECYL-1,2,4-TRIAZOLE [J].
ARMAND, F ;
BADOUX, C ;
BONVILLE, P ;
RUAUDELTEIXIER, A ;
KAHN, O .
LANGMUIR, 1995, 11 (09) :3467-3472
[4]   Heat capacity of polynuclear Fe(HTrZ)3(B10H10)•H2O and trinuclear [Fe3(PrTrZ)6(ReO4)4(H2O)2](ReO4)2 complexes (HTrz=1,2,4-triazole, PrTrz=4-propyl-1,2,4-triazole) manifesting 1A1↔ 5T2 spin transition [J].
BerezovsKii, G. A. ;
Bushuev, M. B. ;
Pishchur, D. P. ;
Lavrenova, L. G. .
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2008, 93 (03) :999-1002
[5]   Self-assembled peptide amphiphile nanofibers conjugated to MRI contrast agents [J].
Bull, SR ;
Guler, MO ;
Bras, RE ;
Meade, TJ ;
Stupp, SI .
NANO LETTERS, 2005, 5 (01) :1-4
[6]   Cooperativity in a spin transition ferrous polymer:: Interacting domain model, thermodynamic, optical and EPR study [J].
Cantin, C ;
Kliava, J ;
Marbeuf, A ;
Mikaïlitchenko, D .
EUROPEAN PHYSICAL JOURNAL B, 1999, 12 (04) :525-540
[7]   Solvent-induced lysozyme gels:: Effects of system composition and temperature on structural and dynamic characteristics [J].
da Silva, Marcelo A. ;
Farhat, Imad A. ;
Areas, Elizabeth P. G. ;
Mitchell, John R. .
BIOPOLYMERS, 2006, 83 (05) :443-454
[8]   A temperature-responsive copolymer hydrogel in controlled drug delivery [J].
Dai, Hongjun ;
Chen, Qiang ;
Qin, Huaili ;
Guan, Ying ;
Shen, Deyan ;
Hua, Youqing ;
Tang, Yalin ;
Xu, Jian .
MACROMOLECULES, 2006, 39 (19) :6584-6589
[9]   Design and application of self-assembled low molecular weight hydrogels [J].
de Loos, M ;
Feringa, BL ;
van Esch, JH .
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, 2005, 2005 (17) :3615-3631
[10]   STUDIES OF THE CROSS-LINKING PROCESS IN GELATIN GELS .3. DEPENDENCE OF MELTING POINT ON CONCENTRATION AND MOLECULAR WEIGHT [J].
ELDRIDGE, JE ;
FERRY, JD .
JOURNAL OF PHYSICAL CHEMISTRY, 1954, 58 (11) :992-995
1234567