Dear Colleagues

121(1-3) (2001), 1739-1740
Periodic multilayer structures of poly(p-phenylene vinylene)s have been fabricated by a self-assembly method on flat surfaces and round surfaces of optical fibers. Alternating multilayers consisting of poly(1,4-(2-(5-carboxypentyloxy)-5- methoxyphenylene)vinylene) and poly(p-phenylene vinylene) have been adsorbed onto the positively charged substrates and the optical properties have been studied. The periodic multilayers with microring geometry have also been fabricated around the quartz fibers, and the optical properties and yellow electroluminescence from a light-emitting device with microring geometry have been investigated.

[255] Alternate Deposition of Horseradish-Peroxidase and Bipolar Pyridine Salt on the Solid-Surface to Prepare Electrocatalytically Active Enzyme Thin-Film

W. J. Li, M. Xian, Z. C. Wang, C. Q. Sun and M. Y. Zhao

Thin Solid Films 386(1) (2001), 121-126

Horseradish peroxidase (HRP)-containing multilayer films have been fabricated by alternate deposition with bipolar pyridine salt (PyC6BPC6Py) on the surface of gold electrode derivatized by 3-mercapto-1-proponesulfonate monolayer. The driving force of forming the multilayer structures is the electrostatic interaction between the negatively charged HRP and the positively charged PyC6BPC6Py. The assembly process was monitored by ultraviolet-visible spectroscopy on quartz slides. The electrochemical behavior of the enzyme electrode showed that the multilayer film was stable and electroactive. The diffusing mediator, methylene green in solution as an electron shuttle, was able to Transfer electrons successfully between the active center of the immobilized HRP and the electrode surface. Its potential application as amperometric sensor for hydrogen peroxide is anticipated. (C) 2001 Elsevier Science B.V. All rights reserved.

[256] Self-Assembled Inorganic/Organic Composite Superlattice Thin- Films with Photochromic Properties

Z. H. Chen, Y. Ma and J. N. Yao

Thin Solid Films 384(2) (2001), 160-165

A multicomposite WO3/4,4'-BPPOBp self-assembled multilayer (SAM) film was fabricated by the consecutive self-assembly of WO, and 4,4'-BPPOBp on 3-aminopropyl-triethyoxysilane (APS) modified quartz or silicon substrate by a polyelectrolyte (PE) approach. A well-ordered superlattice structure, d-spacing 0.694 nm, was identified by X-ray diffraction and X-ray reflection techniques. The SAM film shows fine photochromic properties. (C) 2001 Elsevier Science B.V. All rights reserved.

[257] 2-Step Assembly Technique for Preparation of Polymer-Particle Composite Films

H. Hattori

Thin Solid Films