Molecular recognition in structured matrixes: Control of guest localization in block copolymer films

被引:27
作者
Shenhar, R
Xu, H
Frankamp, BL
Mates, TE
Sanyal, A
Uzun, O
Rotello, VM [1 ]
机构
[1] Univ Massachusetts, Dept Chem, Amherst, MA 01003 USA
[2] Univ Calif Santa Barbara, Dept Engn Math, Santa Barbara, CA 93106 USA
关键词
D O I
10.1021/ja055490f
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We demonstrate the use of molecular recognition to control the spatial distribution of guest molecules within block copolymer films. Block copolymers bearing recognition units were combined with complementary and noncomplementary molecules, and the extent of segregation of these molecules into the different domain types within microphase-separated thin films was quantitatively analyzed using dynamic secondary ion mass spectrometry (SIMS). Complementarity between the guest molecules and the polymer functionalities proved to be a key factor and an efficient tool for directing the segregation preference of the molecules to the different domain types. The effect of segregation preference on the glass transition temperature was studied using differential scanning calorimetry (DSC), and the results corroborate the SIMS findings. In a complementary study, guests with tunable sizes (via dendron substituents) were used to control block copolymer morphology. Morphological characterization using transmission electron microscopy (TEM) and X-ray diffraction reveal that selectivity differences can be directly translated into the ability to obtain different morphologies from recognition unit-functionalized block copolymer scaffolds.
引用
收藏
页码:16318 / 16324
页数:7
相关论文
共 52 条
[1]   Bricks and mortar self-assembly of nanoparticles [J].
Boal, AK ;
Gray, M ;
Ilhan, F ;
Clavier, GM ;
Kapitzky, L ;
Rotello, VM .
TETRAHEDRON, 2002, 58 (04) :765-770
[2]   Self-assembly of nanoparticles into structured spherical and network aggregates [J].
Boal, AK ;
Ilhan, F ;
DeRouchey, JE ;
Thurn-Albrecht, T ;
Russell, TP ;
Rotello, VM .
NATURE, 2000, 404 (6779) :746-748
[3]   Proximity effects in self-organized binary particle-block copolymer blends [J].
Bockstaller, MR ;
Thomas, EL .
PHYSICAL REVIEW LETTERS, 2004, 93 (16) :166106-1
[4]   Optical properties of polymer-based photonic nanocomposite materials [J].
Bockstaller, MR ;
Thomas, EL .
JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (37) :10017-10024
[5]   Size-selective organization of enthalpic compatibilized nanocrystals in ternary block copolymer/particle mixtures [J].
Bockstaller, MR ;
Lapetnikov, Y ;
Margel, S ;
Thomas, EL .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (18) :5276-5277
[6]  
Brandrup J., 1999, Polymer handbook, VII
[7]   Plug and play polymers. Thermal and X-ray characterizations of noncovalently grafted polyhedral oligomeric silsesquioxane (POSS) - Polystyrene nanocomposites [J].
Carroll, JB ;
Waddon, AJ ;
Nakade, H ;
Rotello, VM .
MACROMOLECULES, 2003, 36 (17) :6289-6291
[8]   Ordered bicontinuous nanoporous and nanorelief ceramic films from self assembling polymer precursors [J].
Chan, VZH ;
Hoffman, J ;
Lee, VY ;
Iatrou, H ;
Avgeropoulos, A ;
Hadjichristidis, N ;
Miller, RD ;
Thomas, EL .
SCIENCE, 1999, 286 (5445) :1716-1719
[9]  
Donth E., 2001, The Glass Transition: Relaxation Dynamics in Liquids, Diordered Materials
[10]   Additive-driven phase-selective chemistry in block copolymer thin films: The convergence of top-down and bottom-up approaches [J].
Du, P ;
Li, MQ ;
Douki, K ;
Li, XF ;
Garcia, CRW ;
Jain, A ;
Smilgies, DM ;
Fetters, LJ ;
Gruner, SM ;
Wiesner, U ;
Ober, CK .
ADVANCED MATERIALS, 2004, 16 (12) :953-+