An important aspect of molecular engineering is the property directed' synthesis of large molecules and molecular assemblies. Synthetic expertise has advanced to a state which allows the assembly of supramolecules containing thousands of atoms using a construction kit' of molecular building blocks. Expansion in the field is driven by the appearance of new building blocks and by an improved understanding of the rules for joining them in the design of nanometer-sized devices. Another aspect is the transition from supramolecules to materials. At present no single molecule (however large) has been demonstrated to function as a device, but this appears to be only a matter of time. In all of this research, which has a strongly multidisciplinary character, both existing and yet to be developed analytical techniques are and will remain indispensable. All this and more is discussed in Molecular Engineering for Advanced Materials, which provides a masterly and up to date summary of one of the most challenging research fields to emerge in recent time.

An important aspect of molecular engineering is the property directed' synthesis of large molecules and molecular assemblies. Synthetic expertise has advanced to a state which allows the assembly of supramolecules containing thousands of atoms using a construction kit' of molecular building blocks. Expansion in the field is driven by the appearance of new building blocks and by an improved understanding of the rules for joining them in the design of nanometer-sized devices. Another aspect is the transition from supramolecules to materials. At present no single molecule (however large) has been demonstrated to function as a device, but this appears to be only a matter of time. In all of this research, which has a strongly multidisciplinary character, both existing and yet to be developed analytical techniques are and will remain indispensable. All this and more is discussed in Molecular Engineering for Advanced Materials, which provides a masterly and up to date summary of one of the most challenging research fields to emerge in recent time.

1. Dhne Zweifel hat die "Neue Soziale Frage" durch die sich 1 abzeichnende Krise des Wohlfahrtsstaates wieder an Aktuali- tat gewonnen. Wir beobachten den zunehmend harter werdenden Kampf der Interessenten bzw. Benefiziare, der - bei sich ver- engenden Verteilungsspielraumen - wenn schon nicht mehr um die Ausweitung ihrer sozialen Anspruche, so doch um den Er- halt des Erreichten geht. DaB sich bei diesem Kampf die bei- den potentesten Interessenvertreter, die Gewerkschaften und die Arbeitgeberverbande in den Vordergrund schieben und vehe- ment versuchen, eine Regierung, die keine sozialpolitisch eindeutige Linie mehr verfolgen zu kennen scheint, jeweils auf ihre Seite zu ziehen, widerlegt zum einen eine Grundannah- me des Konzepts der "Neuen Sozialen Frage", bestatigt sie aber auch zugleich. Einerseits wird die These widerlegt. daB die "alte" Soziale Frage durch eine erfolgreiche Sozialpoli- tik als im wesentlichen gelest angesehen werden kenne. denn das Problem der Arbeitslosigkeit ist unbewaltigt geblieben. Die 8eseitigung von Arbeitslosigkeit gehort aber heute neben der Garantie der Arbeitseinkommen zu den Hauptforderungen der Arbeitnehmervertreter an die auch deshalb mit Recht so ge- nannten Arbeitgeber - und ist auch fruher immer verlangt wor- 2 den.

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