David Waldeck, distinguished professor of chemistry and academic director of the Petersen Institute of Nanoscience and Engineering at Pitt, received the 2025 Award in Experimental Physical...
Waldeck was honored by the American Chemical Society
Error message
Deprecated function: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in Drupal\Core\Url::fromUri() (line 281 of core/lib/Drupal/Core/Url.php).
Drupal\Core\Url::fromUri() (Line: 37) Drupal\feeds\Plugin\Field\FieldType\FeedsItem->getUrl() (Line: 95) Drupal\feeds\Plugin\Field\FieldFormatter\FeedsItemUrlFormatter->buildUrl() (Line: 73) Drupal\feeds\Plugin\Field\FieldFormatter\FeedsItemUrlFormatter->viewElements() (Line: 91) Drupal\Core\Field\FormatterBase->view() (Line: 83) Drupal\Core\Field\Plugin\Field\FieldFormatter\EntityReferenceFormatterBase->view() (Line: 268) Drupal\Core\Entity\Entity\EntityViewDisplay->buildMultiple() (Line: 282) Drupal\layout_builder\Entity\LayoutBuilderEntityViewDisplay->buildMultiple() (Line: 340) Drupal\Core\Entity\EntityViewBuilder->buildComponents() (Line: 24) Drupal\node\NodeViewBuilder->buildComponents() (Line: 282) Drupal\Core\Entity\EntityViewBuilder->buildMultiple() (Line: 239) Drupal\Core\Entity\EntityViewBuilder->build() call_user_func_array() (Line: 113) Drupal\Core\Render\Renderer->doTrustedCallback() (Line: 886) Drupal\Core\Render\Renderer->doCallback() (Line: 431) Drupal\Core\Render\Renderer->doRender() (Line: 248) Drupal\Core\Render\Renderer->render() (Line: 238) Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 637) Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 231) Drupal\Core\Render\MainContent\HtmlRenderer->prepare() (Line: 128) Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse() (Line: 90) Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray() call_user_func() (Line: 111) Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch() (Line: 186) Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76) Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53) Drupal\Core\StackMiddleware\Session->handle() (Line: 48) Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28) Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 32) Drupal\big_pipe\StackMiddleware\ContentLength->handle() (Line: 201) Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 138) Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 87) Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48) Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51) Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36) Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51) Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 741) Drupal\Core\DrupalKernel->handle() (Line: 19)Deprecated function: parse_url(): Passing null to parameter #1 ($url) of type string is deprecated in Drupal\Core\Url::fromUri() (line 284 of core/lib/Drupal/Core/Url.php).
Drupal\Core\Url::fromUri() (Line: 37) Drupal\feeds\Plugin\Field\FieldType\FeedsItem->getUrl() (Line: 95) Drupal\feeds\Plugin\Field\FieldFormatter\FeedsItemUrlFormatter->buildUrl() (Line: 73) Drupal\feeds\Plugin\Field\FieldFormatter\FeedsItemUrlFormatter->viewElements() (Line: 91) Drupal\Core\Field\FormatterBase->view() (Line: 83) Drupal\Core\Field\Plugin\Field\FieldFormatter\EntityReferenceFormatterBase->view() (Line: 268) Drupal\Core\Entity\Entity\EntityViewDisplay->buildMultiple() (Line: 282) Drupal\layout_builder\Entity\LayoutBuilderEntityViewDisplay->buildMultiple() (Line: 340) Drupal\Core\Entity\EntityViewBuilder->buildComponents() (Line: 24) Drupal\node\NodeViewBuilder->buildComponents() (Line: 282) Drupal\Core\Entity\EntityViewBuilder->buildMultiple() (Line: 239) Drupal\Core\Entity\EntityViewBuilder->build() call_user_func_array() (Line: 113) Drupal\Core\Render\Renderer->doTrustedCallback() (Line: 886) Drupal\Core\Render\Renderer->doCallback() (Line: 431) Drupal\Core\Render\Renderer->doRender() (Line: 248) Drupal\Core\Render\Renderer->render() (Line: 238) Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 637) Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 231) Drupal\Core\Render\MainContent\HtmlRenderer->prepare() (Line: 128) Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse() (Line: 90) Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray() call_user_func() (Line: 111) Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch() (Line: 186) Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76) Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53) Drupal\Core\StackMiddleware\Session->handle() (Line: 48) Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28) Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 32) Drupal\big_pipe\StackMiddleware\ContentLength->handle() (Line: 201) Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 138) Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 87) Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48) Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51) Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36) Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51) Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 741) Drupal\Core\DrupalKernel->handle() (Line: 19)Deprecated function: str_starts_with(): Passing null to parameter #1 ($haystack) of type string is deprecated in Drupal\Core\Url::fromUri() (line 289 of core/lib/Drupal/Core/Url.php).
Drupal\Core\Url::fromUri() (Line: 37) Drupal\feeds\Plugin\Field\FieldType\FeedsItem->getUrl() (Line: 95) Drupal\feeds\Plugin\Field\FieldFormatter\FeedsItemUrlFormatter->buildUrl() (Line: 73) Drupal\feeds\Plugin\Field\FieldFormatter\FeedsItemUrlFormatter->viewElements() (Line: 91) Drupal\Core\Field\FormatterBase->view() (Line: 83) Drupal\Core\Field\Plugin\Field\FieldFormatter\EntityReferenceFormatterBase->view() (Line: 268) Drupal\Core\Entity\Entity\EntityViewDisplay->buildMultiple() (Line: 282) Drupal\layout_builder\Entity\LayoutBuilderEntityViewDisplay->buildMultiple() (Line: 340) Drupal\Core\Entity\EntityViewBuilder->buildComponents() (Line: 24) Drupal\node\NodeViewBuilder->buildComponents() (Line: 282) Drupal\Core\Entity\EntityViewBuilder->buildMultiple() (Line: 239) Drupal\Core\Entity\EntityViewBuilder->build() call_user_func_array() (Line: 113) Drupal\Core\Render\Renderer->doTrustedCallback() (Line: 886) Drupal\Core\Render\Renderer->doCallback() (Line: 431) Drupal\Core\Render\Renderer->doRender() (Line: 248) Drupal\Core\Render\Renderer->render() (Line: 238) Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 637) Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 231) Drupal\Core\Render\MainContent\HtmlRenderer->prepare() (Line: 128) Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse() (Line: 90) Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray() call_user_func() (Line: 111) Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch() (Line: 186) Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76) Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53) Drupal\Core\StackMiddleware\Session->handle() (Line: 48) Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28) Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 32) Drupal\big_pipe\StackMiddleware\ContentLength->handle() (Line: 201) Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 138) Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 87) Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48) Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51) Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36) Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51) Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 741) Drupal\Core\DrupalKernel->handle() (Line: 19)