A molecular adhesive system for reversibly joining two surfaces, comprising: an anionic coating on a first of two surfaces to be joined; a conductive polymer nanotube array on a second of the two surfaces to be joined; wherein said conductive polymer nanotube array is functionalized with metal nanoparticles; and an electric potential applied across said two surfaces.

Disclosed are a polymer including at least one structural unit with a moiety represented by Chemical Formula 1, an organic thin film including the polymer, a thin film transistor, and an electronic device. ##STR00001## In Chemical Formula 1, Ar.sup.1 to Ar.sup.3, L.sup.1, L.sup.2, and R.sup.1 to R.sup.6 are the same as described in the detailed description.

The present disclosure provides an aerogel comprising conductive polymers and cellulose nanofibrils (CNF). The present disclosure also provides a sensor comprising the aerogels of the present invention.

There is a polymeric photovoltaic cell (or solar cell) with inverted structure having an anode; an anodic buffer layer; an active layer having at least one photoactive organic polymer as electron-donor and at least one electron-accepting organic compound; a cathodic buffer layer; and a cathode. The at least one photoactive organic polymer is selected from conjugated polymers comprising an anthraditiophenic derivative having a general formula (I):

##STR00001##

The polymeric photovoltaic cell (or solar cell) with inverted structure shows good values of power conversion efficiency (PCE) (η) and can be advantageously used in the construction of photovoltaic modules (or solar modules), either on a rigid support or on a flexible support.

An ion-conducting material, a core-shell structure containing the ion-conducting material, an electrode prepared with the core-shell structure and a metal-ion battery employing the electrode are provided. The core-shell structure includes a core particle and an organic-inorganic composite layer formed on the surface of the core particle for encapsulating the core particle. The core particle includes lithium cobalt oxide, lithium nickel cobalt oxide, lithium nickel cobalt manganese oxide, or lithium nickel cobalt aluminum oxide. Also, the organic-inorganic composite layer includes nitrogen-containing hyperbranched polymer and an ion-conducting material. The ion-conducting material is a lithium-containing linear polymer or a modified Prussian blue, wherein the modified Prussian blue has an ion-conducting group and the lithium-containing linear polymer has an ion-conducting segment.

Provided are a polymer semiconductor including a first structural unit represented by Chemical Formula 1 and a second structural unit represented by Chemical Formula 2, a stretchable polymer thin film including the same, and an electronic device.

##STR00001##

Definitions of Chemical Formulas 1 and 2 are as described in the detailed description.

A method for forming an electrochromic polymer block includes: forming each of reaction units by reacting two or more electron-donor groups, wherein each of the reaction units includes (i) a first backbone formed by the two or more electron-donor groups and (ii) at least one reactive functional group connected to each end of the first backbone; and forming the electrochromic polymer block by reacting at least two of the reaction units with acid-catalyzed cationic polymerization, wherein the electrochromic polymer block includes a second backbone formed by two or more of the first backbones.

Disclosed are an organic thin film including a semiconducting polymer including a ligand that is metal-coordination bondable or is metal-coordination bonded and an elastomer including a ligand that is metal-coordination bondable or is metal-coordination bonded, wherein the semiconducting polymer and the elastomer are configured to be dynamic intermolecular bonded by a metal-coordination bond, an organic sensor, and an electronic device.

The present invention relates to a novel polymer and an organic electronic device using same. In the polymer according to the present invention, a cyclic electron-donor, including thiophene, selenophene, or a combination thereof, is introduced into a central skeleton having an A-D-A structure including an electron-donor and electron-acceptor unit. Thus, the polymer has not only excellent chemical and thermal stability, but also good crystallinity. Moreover, intermolecular stacking is possible, and thus charge mobility can be maximized.

This hole collection layer composition for an organic photoelectric conversion elements comprises: a charge-transporting substance formed of a polyaniline derivative represented by formula (1); fluorochemical surfactant; metal oxide nanoparticles; and a solvent. The hole collection layer composition provides a thin film having excellent adhesiveness to an active layer of an organic photoelectric conversion element. ##STR00001## {R.sup.1-R.sup.6 are each independently a hydrogen atom, a halogen atom, a nitro group, a cyano group, a sulfonic acid group, a C.sub.1-C.sub.20 alkoxy group, a C.sub.1-C.sub.20 thioalkoxy group, a C.sub.1-C.sub.20 alkyl group, etc. Meanwhile, one of R.sup.1-R.sup.4 is a sulfonic acid group and at least one of the remaining R.sup.1-R.sup.4 is a C.sub.1-C.sub.20 alkoxy group, a C.sub.1-C.sub.20 thioalkoxy group, a C.sub.1-C.sub.20 alkyl group, etc., and m and n are numbers that satisfy 0≤m≤1, 0≤n≤1, and m+n=1.}